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llvm-project/clang/lib/Driver/Tools.cpp

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//===--- Tools.cpp - Tools Implementations ----------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Tools.h"
#include "InputInfo.h"
#include "ToolChains.h"
#include "clang/Basic/CharInfo.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Version.h"
#include "clang/Config/config.h"
#include "clang/Driver/Action.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Job.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/SanitizerArgs.h"
#include "clang/Driver/ToolChain.h"
#include "clang/Driver/Util.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/Compression.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/TargetParser.h"
#ifdef LLVM_ON_UNIX
#include <unistd.h> // For getuid().
#endif
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang;
using namespace llvm::opt;
static void handleTargetFeaturesGroup(const ArgList &Args,
std::vector<StringRef> &Features,
OptSpecifier Group) {
for (const Arg *A : Args.filtered(Group)) {
StringRef Name = A->getOption().getName();
A->claim();
// Skip over "-m".
assert(Name.startswith("m") && "Invalid feature name.");
Name = Name.substr(1);
bool IsNegative = Name.startswith("no-");
if (IsNegative)
Name = Name.substr(3);
Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
}
}
static const char *getSparcAsmModeForCPU(StringRef Name,
const llvm::Triple &Triple) {
if (Triple.getArch() == llvm::Triple::sparcv9) {
return llvm::StringSwitch<const char *>(Name)
.Case("niagara", "-Av9b")
.Case("niagara2", "-Av9b")
.Case("niagara3", "-Av9d")
.Case("niagara4", "-Av9d")
.Default("-Av9");
} else {
return llvm::StringSwitch<const char *>(Name)
.Case("v8", "-Av8")
.Case("supersparc", "-Av8")
.Case("sparclite", "-Asparclite")
.Case("f934", "-Asparclite")
.Case("hypersparc", "-Av8")
.Case("sparclite86x", "-Asparclite")
.Case("sparclet", "-Asparclet")
.Case("tsc701", "-Asparclet")
.Case("v9", "-Av8plus")
.Case("ultrasparc", "-Av8plus")
.Case("ultrasparc3", "-Av8plus")
.Case("niagara", "-Av8plusb")
.Case("niagara2", "-Av8plusb")
.Case("niagara3", "-Av8plusd")
.Case("niagara4", "-Av8plusd")
.Case("leon2", "-Av8")
.Case("at697e", "-Av8")
.Case("at697f", "-Av8")
.Case("leon3", "-Av8")
.Case("ut699", "-Av8")
.Case("gr712rc", "-Av8")
.Case("leon4", "-Av8")
.Case("gr740", "-Av8")
.Default("-Av8");
}
}
static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
if (Arg *A = Args.getLastArg(options::OPT_C, options::OPT_CC)) {
if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_P) &&
!Args.hasArg(options::OPT__SLASH_EP) && !D.CCCIsCPP()) {
D.Diag(diag::err_drv_argument_only_allowed_with)
<< A->getBaseArg().getAsString(Args)
<< (D.IsCLMode() ? "/E, /P or /EP" : "-E");
}
}
}
static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
// In gcc, only ARM checks this, but it seems reasonable to check universally.
if (Args.hasArg(options::OPT_static))
if (const Arg *A =
Args.getLastArg(options::OPT_dynamic, options::OPT_mdynamic_no_pic))
D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
<< "-static";
}
// Add backslashes to escape spaces and other backslashes.
// This is used for the space-separated argument list specified with
// the -dwarf-debug-flags option.
static void EscapeSpacesAndBackslashes(const char *Arg,
SmallVectorImpl<char> &Res) {
for (; *Arg; ++Arg) {
switch (*Arg) {
default:
break;
case ' ':
case '\\':
Res.push_back('\\');
break;
}
Res.push_back(*Arg);
}
}
// Quote target names for inclusion in GNU Make dependency files.
// Only the characters '$', '#', ' ', '\t' are quoted.
static void QuoteTarget(StringRef Target, SmallVectorImpl<char> &Res) {
for (unsigned i = 0, e = Target.size(); i != e; ++i) {
switch (Target[i]) {
case ' ':
case '\t':
// Escape the preceding backslashes
for (int j = i - 1; j >= 0 && Target[j] == '\\'; --j)
Res.push_back('\\');
// Escape the space/tab
Res.push_back('\\');
break;
case '$':
Res.push_back('$');
break;
case '#':
Res.push_back('\\');
break;
default:
break;
}
Res.push_back(Target[i]);
}
}
static void addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
const char *ArgName, const char *EnvVar) {
const char *DirList = ::getenv(EnvVar);
bool CombinedArg = false;
if (!DirList)
return; // Nothing to do.
StringRef Name(ArgName);
if (Name.equals("-I") || Name.equals("-L"))
CombinedArg = true;
StringRef Dirs(DirList);
if (Dirs.empty()) // Empty string should not add '.'.
return;
StringRef::size_type Delim;
while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
if (Delim == 0) { // Leading colon.
if (CombinedArg) {
CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
} else {
CmdArgs.push_back(ArgName);
CmdArgs.push_back(".");
}
} else {
if (CombinedArg) {
CmdArgs.push_back(
Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
} else {
CmdArgs.push_back(ArgName);
CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
}
}
Dirs = Dirs.substr(Delim + 1);
}
if (Dirs.empty()) { // Trailing colon.
if (CombinedArg) {
CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
} else {
CmdArgs.push_back(ArgName);
CmdArgs.push_back(".");
}
} else { // Add the last path.
if (CombinedArg) {
CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
} else {
CmdArgs.push_back(ArgName);
CmdArgs.push_back(Args.MakeArgString(Dirs));
}
}
}
static void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
const ArgList &Args, ArgStringList &CmdArgs) {
const Driver &D = TC.getDriver();
// Add extra linker input arguments which are not treated as inputs
// (constructed via -Xarch_).
Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
for (const auto &II : Inputs) {
if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
// Don't try to pass LLVM inputs unless we have native support.
D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
// Add filenames immediately.
if (II.isFilename()) {
CmdArgs.push_back(II.getFilename());
continue;
}
// Otherwise, this is a linker input argument.
const Arg &A = II.getInputArg();
// Handle reserved library options.
if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
TC.AddCCKextLibArgs(Args, CmdArgs);
else if (A.getOption().matches(options::OPT_z)) {
// Pass -z prefix for gcc linker compatibility.
A.claim();
A.render(Args, CmdArgs);
} else {
A.renderAsInput(Args, CmdArgs);
}
}
// LIBRARY_PATH - included following the user specified library paths.
// and only supported on native toolchains.
if (!TC.isCrossCompiling())
addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
}
/// \brief Determine whether Objective-C automated reference counting is
/// enabled.
static bool isObjCAutoRefCount(const ArgList &Args) {
return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
}
/// \brief Determine whether we are linking the ObjC runtime.
static bool isObjCRuntimeLinked(const ArgList &Args) {
if (isObjCAutoRefCount(Args)) {
Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
return true;
}
return Args.hasArg(options::OPT_fobjc_link_runtime);
}
static bool forwardToGCC(const Option &O) {
// Don't forward inputs from the original command line. They are added from
// InputInfoList.
return O.getKind() != Option::InputClass &&
!O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
}
/// Apply \a Work on the current tool chain \a RegularToolChain and any other
/// offloading tool chain that is associated with the current action \a JA.
static void
forAllAssociatedToolChains(Compilation &C, const JobAction &JA,
const ToolChain &RegularToolChain,
llvm::function_ref<void(const ToolChain &)> Work) {
// Apply Work on the current/regular tool chain.
Work(RegularToolChain);
// Apply Work on all the offloading tool chains associated with the current
// action.
if (JA.isHostOffloading(Action::OFK_Cuda))
Work(*C.getSingleOffloadToolChain<Action::OFK_Cuda>());
else if (JA.isDeviceOffloading(Action::OFK_Cuda))
Work(*C.getSingleOffloadToolChain<Action::OFK_Host>());
//
// TODO: Add support for other offloading programming models here.
//
}
void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
const Driver &D, const ArgList &Args,
ArgStringList &CmdArgs,
const InputInfo &Output,
const InputInfoList &Inputs) const {
Arg *A;
const bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
CheckPreprocessingOptions(D, Args);
Args.AddLastArg(CmdArgs, options::OPT_C);
Args.AddLastArg(CmdArgs, options::OPT_CC);
// Handle dependency file generation.
if ((A = Args.getLastArg(options::OPT_M, options::OPT_MM)) ||
(A = Args.getLastArg(options::OPT_MD)) ||
(A = Args.getLastArg(options::OPT_MMD))) {
// Determine the output location.
const char *DepFile;
if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
DepFile = MF->getValue();
C.addFailureResultFile(DepFile, &JA);
} else if (Output.getType() == types::TY_Dependencies) {
DepFile = Output.getFilename();
} else if (A->getOption().matches(options::OPT_M) ||
A->getOption().matches(options::OPT_MM)) {
DepFile = "-";
} else {
DepFile = getDependencyFileName(Args, Inputs);
C.addFailureResultFile(DepFile, &JA);
}
CmdArgs.push_back("-dependency-file");
CmdArgs.push_back(DepFile);
// Add a default target if one wasn't specified.
if (!Args.hasArg(options::OPT_MT) && !Args.hasArg(options::OPT_MQ)) {
const char *DepTarget;
// If user provided -o, that is the dependency target, except
// when we are only generating a dependency file.
Arg *OutputOpt = Args.getLastArg(options::OPT_o);
if (OutputOpt && Output.getType() != types::TY_Dependencies) {
DepTarget = OutputOpt->getValue();
} else {
// Otherwise derive from the base input.
//
// FIXME: This should use the computed output file location.
SmallString<128> P(Inputs[0].getBaseInput());
llvm::sys::path::replace_extension(P, "o");
DepTarget = Args.MakeArgString(llvm::sys::path::filename(P));
}
CmdArgs.push_back("-MT");
SmallString<128> Quoted;
QuoteTarget(DepTarget, Quoted);
CmdArgs.push_back(Args.MakeArgString(Quoted));
}
if (A->getOption().matches(options::OPT_M) ||
A->getOption().matches(options::OPT_MD))
CmdArgs.push_back("-sys-header-deps");
if ((isa<PrecompileJobAction>(JA) &&
!Args.hasArg(options::OPT_fno_module_file_deps)) ||
Args.hasArg(options::OPT_fmodule_file_deps))
CmdArgs.push_back("-module-file-deps");
}
if (Args.hasArg(options::OPT_MG)) {
if (!A || A->getOption().matches(options::OPT_MD) ||
A->getOption().matches(options::OPT_MMD))
D.Diag(diag::err_drv_mg_requires_m_or_mm);
CmdArgs.push_back("-MG");
}
Args.AddLastArg(CmdArgs, options::OPT_MP);
Args.AddLastArg(CmdArgs, options::OPT_MV);
// Convert all -MQ <target> args to -MT <quoted target>
for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
A->claim();
if (A->getOption().matches(options::OPT_MQ)) {
CmdArgs.push_back("-MT");
SmallString<128> Quoted;
QuoteTarget(A->getValue(), Quoted);
CmdArgs.push_back(Args.MakeArgString(Quoted));
// -MT flag - no change
} else {
A->render(Args, CmdArgs);
}
}
// Add offload include arguments specific for CUDA. This must happen before
// we -I or -include anything else, because we must pick up the CUDA headers
// from the particular CUDA installation, rather than from e.g.
// /usr/local/include.
if (JA.isOffloading(Action::OFK_Cuda))
getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
// Add -i* options, and automatically translate to
// -include-pch/-include-pth for transparent PCH support. It's
// wonky, but we include looking for .gch so we can support seamless
// replacement into a build system already set up to be generating
// .gch files.
int YcIndex = -1, YuIndex = -1;
{
int AI = -1;
const Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
const Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
// Walk the whole i_Group and skip non "-include" flags so that the index
// here matches the index in the next loop below.
++AI;
if (!A->getOption().matches(options::OPT_include))
continue;
if (YcArg && strcmp(A->getValue(), YcArg->getValue()) == 0)
YcIndex = AI;
if (YuArg && strcmp(A->getValue(), YuArg->getValue()) == 0)
YuIndex = AI;
}
}
if (isa<PrecompileJobAction>(JA) && YcIndex != -1) {
Driver::InputList Inputs;
D.BuildInputs(getToolChain(), C.getArgs(), Inputs);
assert(Inputs.size() == 1 && "Need one input when building pch");
CmdArgs.push_back(Args.MakeArgString(Twine("-find-pch-source=") +
Inputs[0].second->getValue()));
}
bool RenderedImplicitInclude = false;
int AI = -1;
for (const Arg *A : Args.filtered(options::OPT_clang_i_Group)) {
++AI;
if (getToolChain().getDriver().IsCLMode() &&
A->getOption().matches(options::OPT_include)) {
// In clang-cl mode, /Ycfoo.h means that all code up to a foo.h
// include is compiled into foo.h, and everything after goes into
// the .obj file. /Yufoo.h means that all includes prior to and including
// foo.h are completely skipped and replaced with a use of the pch file
// for foo.h. (Each flag can have at most one value, multiple /Yc flags
// just mean that the last one wins.) If /Yc and /Yu are both present
// and refer to the same file, /Yc wins.
// Note that OPT__SLASH_FI gets mapped to OPT_include.
// FIXME: The code here assumes that /Yc and /Yu refer to the same file.
// cl.exe seems to support both flags with different values, but that
// seems strange (which flag does /Fp now refer to?), so don't implement
// that until someone needs it.
int PchIndex = YcIndex != -1 ? YcIndex : YuIndex;
if (PchIndex != -1) {
if (isa<PrecompileJobAction>(JA)) {
// When building the pch, skip all includes after the pch.
assert(YcIndex != -1 && PchIndex == YcIndex);
if (AI >= YcIndex)
continue;
} else {
// When using the pch, skip all includes prior to the pch.
if (AI < PchIndex) {
A->claim();
continue;
}
if (AI == PchIndex) {
A->claim();
CmdArgs.push_back("-include-pch");
CmdArgs.push_back(
Args.MakeArgString(D.GetClPchPath(C, A->getValue())));
continue;
}
}
}
} else if (A->getOption().matches(options::OPT_include)) {
// Handling of gcc-style gch precompiled headers.
bool IsFirstImplicitInclude = !RenderedImplicitInclude;
RenderedImplicitInclude = true;
// Use PCH if the user requested it.
bool UsePCH = D.CCCUsePCH;
bool FoundPTH = false;
bool FoundPCH = false;
SmallString<128> P(A->getValue());
// We want the files to have a name like foo.h.pch. Add a dummy extension
// so that replace_extension does the right thing.
P += ".dummy";
if (UsePCH) {
llvm::sys::path::replace_extension(P, "pch");
if (llvm::sys::fs::exists(P))
FoundPCH = true;
}
if (!FoundPCH) {
llvm::sys::path::replace_extension(P, "pth");
if (llvm::sys::fs::exists(P))
FoundPTH = true;
}
if (!FoundPCH && !FoundPTH) {
llvm::sys::path::replace_extension(P, "gch");
if (llvm::sys::fs::exists(P)) {
FoundPCH = UsePCH;
FoundPTH = !UsePCH;
}
}
if (FoundPCH || FoundPTH) {
if (IsFirstImplicitInclude) {
A->claim();
if (UsePCH)
CmdArgs.push_back("-include-pch");
else
CmdArgs.push_back("-include-pth");
CmdArgs.push_back(Args.MakeArgString(P));
continue;
} else {
// Ignore the PCH if not first on command line and emit warning.
D.Diag(diag::warn_drv_pch_not_first_include) << P
<< A->getAsString(Args);
}
}
} else if (A->getOption().matches(options::OPT_isystem_after)) {
// Handling of paths which must come late. These entries are handled by
// the toolchain itself after the resource dir is inserted in the right
// search order.
// Do not claim the argument so that the use of the argument does not
// silently go unnoticed on toolchains which do not honour the option.
continue;
}
// Not translated, render as usual.
A->claim();
A->render(Args, CmdArgs);
}
Args.AddAllArgs(CmdArgs,
{options::OPT_D, options::OPT_U, options::OPT_I_Group,
options::OPT_F, options::OPT_index_header_map});
// Add -Wp, and -Xpreprocessor if using the preprocessor.
// FIXME: There is a very unfortunate problem here, some troubled
// souls abuse -Wp, to pass preprocessor options in gcc syntax. To
// really support that we would have to parse and then translate
// those options. :(
Args.AddAllArgValues(CmdArgs, options::OPT_Wp_COMMA,
options::OPT_Xpreprocessor);
// -I- is a deprecated GCC feature, reject it.
if (Arg *A = Args.getLastArg(options::OPT_I_))
D.Diag(diag::err_drv_I_dash_not_supported) << A->getAsString(Args);
// If we have a --sysroot, and don't have an explicit -isysroot flag, add an
// -isysroot to the CC1 invocation.
StringRef sysroot = C.getSysRoot();
if (sysroot != "") {
if (!Args.hasArg(options::OPT_isysroot)) {
CmdArgs.push_back("-isysroot");
CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
}
}
// Parse additional include paths from environment variables.
// FIXME: We should probably sink the logic for handling these from the
// frontend into the driver. It will allow deleting 4 otherwise unused flags.
// CPATH - included following the user specified includes (but prior to
// builtin and standard includes).
addDirectoryList(Args, CmdArgs, "-I", "CPATH");
// C_INCLUDE_PATH - system includes enabled when compiling C.
addDirectoryList(Args, CmdArgs, "-c-isystem", "C_INCLUDE_PATH");
// CPLUS_INCLUDE_PATH - system includes enabled when compiling C++.
addDirectoryList(Args, CmdArgs, "-cxx-isystem", "CPLUS_INCLUDE_PATH");
// OBJC_INCLUDE_PATH - system includes enabled when compiling ObjC.
addDirectoryList(Args, CmdArgs, "-objc-isystem", "OBJC_INCLUDE_PATH");
// OBJCPLUS_INCLUDE_PATH - system includes enabled when compiling ObjC++.
addDirectoryList(Args, CmdArgs, "-objcxx-isystem", "OBJCPLUS_INCLUDE_PATH");
// While adding the include arguments, we also attempt to retrieve the
// arguments of related offloading toolchains or arguments that are specific
// of an offloading programming model.
// Add C++ include arguments, if needed.
if (types::isCXX(Inputs[0].getType()))
forAllAssociatedToolChains(C, JA, getToolChain(),
[&Args, &CmdArgs](const ToolChain &TC) {
TC.AddClangCXXStdlibIncludeArgs(Args, CmdArgs);
});
// Add system include arguments for all targets but IAMCU.
if (!IsIAMCU)
forAllAssociatedToolChains(C, JA, getToolChain(),
[&Args, &CmdArgs](const ToolChain &TC) {
TC.AddClangSystemIncludeArgs(Args, CmdArgs);
});
else {
// For IAMCU add special include arguments.
getToolChain().AddIAMCUIncludeArgs(Args, CmdArgs);
}
}
// FIXME: Move to target hook.
static bool isSignedCharDefault(const llvm::Triple &Triple) {
switch (Triple.getArch()) {
default:
return true;
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
if (Triple.isOSDarwin() || Triple.isOSWindows())
return true;
return false;
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
if (Triple.isOSDarwin())
return true;
return false;
case llvm::Triple::hexagon:
case llvm::Triple::ppc64le:
case llvm::Triple::systemz:
case llvm::Triple::xcore:
return false;
}
}
static bool isNoCommonDefault(const llvm::Triple &Triple) {
switch (Triple.getArch()) {
default:
return false;
case llvm::Triple::xcore:
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
return true;
}
}
// ARM tools start.
// Get SubArch (vN).
static int getARMSubArchVersionNumber(const llvm::Triple &Triple) {
llvm::StringRef Arch = Triple.getArchName();
return llvm::ARM::parseArchVersion(Arch);
}
// True if M-profile.
static bool isARMMProfile(const llvm::Triple &Triple) {
llvm::StringRef Arch = Triple.getArchName();
unsigned Profile = llvm::ARM::parseArchProfile(Arch);
return Profile == llvm::ARM::PK_M;
}
// Get Arch/CPU from args.
static void getARMArchCPUFromArgs(const ArgList &Args, llvm::StringRef &Arch,
llvm::StringRef &CPU, bool FromAs = false) {
if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
CPU = A->getValue();
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
Arch = A->getValue();
if (!FromAs)
return;
for (const Arg *A :
Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
StringRef Value = A->getValue();
if (Value.startswith("-mcpu="))
CPU = Value.substr(6);
if (Value.startswith("-march="))
Arch = Value.substr(7);
}
}
// Handle -mhwdiv=.
// FIXME: Use ARMTargetParser.
static void getARMHWDivFeatures(const Driver &D, const Arg *A,
const ArgList &Args, StringRef HWDiv,
std::vector<StringRef> &Features) {
unsigned HWDivID = llvm::ARM::parseHWDiv(HWDiv);
if (!llvm::ARM::getHWDivFeatures(HWDivID, Features))
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
// Handle -mfpu=.
static void getARMFPUFeatures(const Driver &D, const Arg *A,
const ArgList &Args, StringRef FPU,
std::vector<StringRef> &Features) {
unsigned FPUID = llvm::ARM::parseFPU(FPU);
if (!llvm::ARM::getFPUFeatures(FPUID, Features))
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
// Decode ARM features from string like +[no]featureA+[no]featureB+...
static bool DecodeARMFeatures(const Driver &D, StringRef text,
std::vector<StringRef> &Features) {
SmallVector<StringRef, 8> Split;
text.split(Split, StringRef("+"), -1, false);
for (StringRef Feature : Split) {
StringRef FeatureName = llvm::ARM::getArchExtFeature(Feature);
if (!FeatureName.empty())
Features.push_back(FeatureName);
else
return false;
}
return true;
}
// Check if -march is valid by checking if it can be canonicalised and parsed.
// getARMArch is used here instead of just checking the -march value in order
// to handle -march=native correctly.
static void checkARMArchName(const Driver &D, const Arg *A, const ArgList &Args,
llvm::StringRef ArchName,
std::vector<StringRef> &Features,
const llvm::Triple &Triple) {
std::pair<StringRef, StringRef> Split = ArchName.split("+");
std::string MArch = arm::getARMArch(ArchName, Triple);
if (llvm::ARM::parseArch(MArch) == llvm::ARM::AK_INVALID ||
(Split.second.size() && !DecodeARMFeatures(D, Split.second, Features)))
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
// Check -mcpu=. Needs ArchName to handle -mcpu=generic.
static void checkARMCPUName(const Driver &D, const Arg *A, const ArgList &Args,
llvm::StringRef CPUName, llvm::StringRef ArchName,
std::vector<StringRef> &Features,
const llvm::Triple &Triple) {
std::pair<StringRef, StringRef> Split = CPUName.split("+");
std::string CPU = arm::getARMTargetCPU(CPUName, ArchName, Triple);
if (arm::getLLVMArchSuffixForARM(CPU, ArchName, Triple).empty() ||
(Split.second.size() && !DecodeARMFeatures(D, Split.second, Features)))
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
static bool useAAPCSForMachO(const llvm::Triple &T) {
// The backend is hardwired to assume AAPCS for M-class processors, ensure
// the frontend matches that.
return T.getEnvironment() == llvm::Triple::EABI ||
T.getOS() == llvm::Triple::UnknownOS || isARMMProfile(T);
}
// Select the float ABI as determined by -msoft-float, -mhard-float, and
// -mfloat-abi=.
arm::FloatABI arm::getARMFloatABI(const ToolChain &TC, const ArgList &Args) {
const Driver &D = TC.getDriver();
const llvm::Triple &Triple = TC.getEffectiveTriple();
auto SubArch = getARMSubArchVersionNumber(Triple);
arm::FloatABI ABI = FloatABI::Invalid;
if (Arg *A =
Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
options::OPT_mfloat_abi_EQ)) {
if (A->getOption().matches(options::OPT_msoft_float)) {
ABI = FloatABI::Soft;
} else if (A->getOption().matches(options::OPT_mhard_float)) {
ABI = FloatABI::Hard;
} else {
ABI = llvm::StringSwitch<arm::FloatABI>(A->getValue())
.Case("soft", FloatABI::Soft)
.Case("softfp", FloatABI::SoftFP)
.Case("hard", FloatABI::Hard)
.Default(FloatABI::Invalid);
if (ABI == FloatABI::Invalid && !StringRef(A->getValue()).empty()) {
D.Diag(diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
ABI = FloatABI::Soft;
}
}
// It is incorrect to select hard float ABI on MachO platforms if the ABI is
// "apcs-gnu".
if (Triple.isOSBinFormatMachO() && !useAAPCSForMachO(Triple) &&
ABI == FloatABI::Hard) {
D.Diag(diag::err_drv_unsupported_opt_for_target) << A->getAsString(Args)
<< Triple.getArchName();
}
}
// If unspecified, choose the default based on the platform.
if (ABI == FloatABI::Invalid) {
switch (Triple.getOS()) {
case llvm::Triple::Darwin:
case llvm::Triple::MacOSX:
case llvm::Triple::IOS:
case llvm::Triple::TvOS: {
// Darwin defaults to "softfp" for v6 and v7.
ABI = (SubArch == 6 || SubArch == 7) ? FloatABI::SoftFP : FloatABI::Soft;
ABI = Triple.isWatchABI() ? FloatABI::Hard : ABI;
break;
}
case llvm::Triple::WatchOS:
ABI = FloatABI::Hard;
break;
// FIXME: this is invalid for WindowsCE
case llvm::Triple::Win32:
ABI = FloatABI::Hard;
break;
case llvm::Triple::FreeBSD:
switch (Triple.getEnvironment()) {
case llvm::Triple::GNUEABIHF:
ABI = FloatABI::Hard;
break;
default:
// FreeBSD defaults to soft float
ABI = FloatABI::Soft;
break;
}
break;
default:
switch (Triple.getEnvironment()) {
case llvm::Triple::GNUEABIHF:
case llvm::Triple::MuslEABIHF:
case llvm::Triple::EABIHF:
ABI = FloatABI::Hard;
break;
case llvm::Triple::GNUEABI:
case llvm::Triple::MuslEABI:
case llvm::Triple::EABI:
// EABI is always AAPCS, and if it was not marked 'hard', it's softfp
ABI = FloatABI::SoftFP;
break;
case llvm::Triple::Android:
ABI = (SubArch == 7) ? FloatABI::SoftFP : FloatABI::Soft;
break;
default:
// Assume "soft", but warn the user we are guessing.
if (Triple.isOSBinFormatMachO() &&
Triple.getSubArch() == llvm::Triple::ARMSubArch_v7em)
ABI = FloatABI::Hard;
else
ABI = FloatABI::Soft;
if (Triple.getOS() != llvm::Triple::UnknownOS ||
!Triple.isOSBinFormatMachO())
D.Diag(diag::warn_drv_assuming_mfloat_abi_is) << "soft";
break;
}
}
}
assert(ABI != FloatABI::Invalid && "must select an ABI");
return ABI;
}
static void getARMTargetFeatures(const ToolChain &TC,
const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features,
bool ForAS) {
const Driver &D = TC.getDriver();
bool KernelOrKext =
Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
arm::FloatABI ABI = arm::getARMFloatABI(TC, Args);
const Arg *WaCPU = nullptr, *WaFPU = nullptr;
const Arg *WaHDiv = nullptr, *WaArch = nullptr;
if (!ForAS) {
// FIXME: Note, this is a hack, the LLVM backend doesn't actually use these
// yet (it uses the -mfloat-abi and -msoft-float options), and it is
// stripped out by the ARM target. We should probably pass this a new
// -target-option, which is handled by the -cc1/-cc1as invocation.
//
// FIXME2: For consistency, it would be ideal if we set up the target
// machine state the same when using the frontend or the assembler. We don't
// currently do that for the assembler, we pass the options directly to the
// backend and never even instantiate the frontend TargetInfo. If we did,
// and used its handleTargetFeatures hook, then we could ensure the
// assembler and the frontend behave the same.
// Use software floating point operations?
if (ABI == arm::FloatABI::Soft)
Features.push_back("+soft-float");
// Use software floating point argument passing?
if (ABI != arm::FloatABI::Hard)
Features.push_back("+soft-float-abi");
} else {
// Here, we make sure that -Wa,-mfpu/cpu/arch/hwdiv will be passed down
// to the assembler correctly.
for (const Arg *A :
Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
StringRef Value = A->getValue();
if (Value.startswith("-mfpu=")) {
WaFPU = A;
} else if (Value.startswith("-mcpu=")) {
WaCPU = A;
} else if (Value.startswith("-mhwdiv=")) {
WaHDiv = A;
} else if (Value.startswith("-march=")) {
WaArch = A;
}
}
}
// Check -march. ClangAs gives preference to -Wa,-march=.
const Arg *ArchArg = Args.getLastArg(options::OPT_march_EQ);
StringRef ArchName;
if (WaArch) {
if (ArchArg)
D.Diag(clang::diag::warn_drv_unused_argument)
<< ArchArg->getAsString(Args);
ArchName = StringRef(WaArch->getValue()).substr(7);
checkARMArchName(D, WaArch, Args, ArchName, Features, Triple);
// FIXME: Set Arch.
D.Diag(clang::diag::warn_drv_unused_argument) << WaArch->getAsString(Args);
} else if (ArchArg) {
ArchName = ArchArg->getValue();
checkARMArchName(D, ArchArg, Args, ArchName, Features, Triple);
}
// Check -mcpu. ClangAs gives preference to -Wa,-mcpu=.
const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
StringRef CPUName;
if (WaCPU) {
if (CPUArg)
D.Diag(clang::diag::warn_drv_unused_argument)
<< CPUArg->getAsString(Args);
CPUName = StringRef(WaCPU->getValue()).substr(6);
checkARMCPUName(D, WaCPU, Args, CPUName, ArchName, Features, Triple);
} else if (CPUArg) {
CPUName = CPUArg->getValue();
checkARMCPUName(D, CPUArg, Args, CPUName, ArchName, Features, Triple);
}
// Add CPU features for generic CPUs
if (CPUName == "native") {
llvm::StringMap<bool> HostFeatures;
if (llvm::sys::getHostCPUFeatures(HostFeatures))
for (auto &F : HostFeatures)
Features.push_back(
Args.MakeArgString((F.second ? "+" : "-") + F.first()));
}
// Honor -mfpu=. ClangAs gives preference to -Wa,-mfpu=.
const Arg *FPUArg = Args.getLastArg(options::OPT_mfpu_EQ);
if (WaFPU) {
if (FPUArg)
D.Diag(clang::diag::warn_drv_unused_argument)
<< FPUArg->getAsString(Args);
getARMFPUFeatures(D, WaFPU, Args, StringRef(WaFPU->getValue()).substr(6),
Features);
} else if (FPUArg) {
getARMFPUFeatures(D, FPUArg, Args, FPUArg->getValue(), Features);
}
// Honor -mhwdiv=. ClangAs gives preference to -Wa,-mhwdiv=.
const Arg *HDivArg = Args.getLastArg(options::OPT_mhwdiv_EQ);
if (WaHDiv) {
if (HDivArg)
D.Diag(clang::diag::warn_drv_unused_argument)
<< HDivArg->getAsString(Args);
getARMHWDivFeatures(D, WaHDiv, Args,
StringRef(WaHDiv->getValue()).substr(8), Features);
} else if (HDivArg)
getARMHWDivFeatures(D, HDivArg, Args, HDivArg->getValue(), Features);
// Setting -msoft-float effectively disables NEON because of the GCC
// implementation, although the same isn't true of VFP or VFP3.
if (ABI == arm::FloatABI::Soft) {
Features.push_back("-neon");
// Also need to explicitly disable features which imply NEON.
Features.push_back("-crypto");
}
// En/disable crc code generation.
if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
if (A->getOption().matches(options::OPT_mcrc))
Features.push_back("+crc");
else
Features.push_back("-crc");
}
// Look for the last occurrence of -mlong-calls or -mno-long-calls. If
// neither options are specified, see if we are compiling for kernel/kext and
// decide whether to pass "+long-calls" based on the OS and its version.
if (Arg *A = Args.getLastArg(options::OPT_mlong_calls,
options::OPT_mno_long_calls)) {
if (A->getOption().matches(options::OPT_mlong_calls))
Features.push_back("+long-calls");
} else if (KernelOrKext && (!Triple.isiOS() || Triple.isOSVersionLT(6)) &&
!Triple.isWatchOS()) {
Features.push_back("+long-calls");
}
// Kernel code has more strict alignment requirements.
if (KernelOrKext)
Features.push_back("+strict-align");
else if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access,
options::OPT_munaligned_access)) {
if (A->getOption().matches(options::OPT_munaligned_access)) {
// No v6M core supports unaligned memory access (v6M ARM ARM A3.2).
if (Triple.getSubArch() == llvm::Triple::SubArchType::ARMSubArch_v6m)
D.Diag(diag::err_target_unsupported_unaligned) << "v6m";
// v8M Baseline follows on from v6M, so doesn't support unaligned memory
// access either.
else if (Triple.getSubArch() == llvm::Triple::SubArchType::ARMSubArch_v8m_baseline)
D.Diag(diag::err_target_unsupported_unaligned) << "v8m.base";
} else
Features.push_back("+strict-align");
} else {
// Assume pre-ARMv6 doesn't support unaligned accesses.
//
// ARMv6 may or may not support unaligned accesses depending on the
// SCTLR.U bit, which is architecture-specific. We assume ARMv6
// Darwin and NetBSD targets support unaligned accesses, and others don't.
//
// ARMv7 always has SCTLR.U set to 1, but it has a new SCTLR.A bit
// which raises an alignment fault on unaligned accesses. Linux
// defaults this bit to 0 and handles it as a system-wide (not
// per-process) setting. It is therefore safe to assume that ARMv7+
// Linux targets support unaligned accesses. The same goes for NaCl.
//
// The above behavior is consistent with GCC.
int VersionNum = getARMSubArchVersionNumber(Triple);
if (Triple.isOSDarwin() || Triple.isOSNetBSD()) {
if (VersionNum < 6 ||
Triple.getSubArch() == llvm::Triple::SubArchType::ARMSubArch_v6m)
Features.push_back("+strict-align");
} else if (Triple.isOSLinux() || Triple.isOSNaCl()) {
if (VersionNum < 7)
Features.push_back("+strict-align");
} else
Features.push_back("+strict-align");
}
// llvm does not support reserving registers in general. There is support
// for reserving r9 on ARM though (defined as a platform-specific register
// in ARM EABI).
if (Args.hasArg(options::OPT_ffixed_r9))
Features.push_back("+reserve-r9");
// The kext linker doesn't know how to deal with movw/movt.
if (KernelOrKext || Args.hasArg(options::OPT_mno_movt))
Features.push_back("+no-movt");
}
void Clang::AddARMTargetArgs(const llvm::Triple &Triple, const ArgList &Args,
ArgStringList &CmdArgs, bool KernelOrKext) const {
// Select the ABI to use.
// FIXME: Support -meabi.
// FIXME: Parts of this are duplicated in the backend, unify this somehow.
const char *ABIName = nullptr;
if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
ABIName = A->getValue();
} else if (Triple.isOSBinFormatMachO()) {
if (useAAPCSForMachO(Triple)) {
ABIName = "aapcs";
} else if (Triple.isWatchABI()) {
ABIName = "aapcs16";
} else {
ABIName = "apcs-gnu";
}
} else if (Triple.isOSWindows()) {
// FIXME: this is invalid for WindowsCE
ABIName = "aapcs";
} else {
// Select the default based on the platform.
switch (Triple.getEnvironment()) {
case llvm::Triple::Android:
case llvm::Triple::GNUEABI:
case llvm::Triple::GNUEABIHF:
case llvm::Triple::MuslEABI:
case llvm::Triple::MuslEABIHF:
ABIName = "aapcs-linux";
break;
case llvm::Triple::EABIHF:
case llvm::Triple::EABI:
ABIName = "aapcs";
break;
default:
if (Triple.getOS() == llvm::Triple::NetBSD)
ABIName = "apcs-gnu";
else
ABIName = "aapcs";
break;
}
}
CmdArgs.push_back("-target-abi");
CmdArgs.push_back(ABIName);
// Determine floating point ABI from the options & target defaults.
arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
if (ABI == arm::FloatABI::Soft) {
// Floating point operations and argument passing are soft.
// FIXME: This changes CPP defines, we need -target-soft-float.
CmdArgs.push_back("-msoft-float");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
} else if (ABI == arm::FloatABI::SoftFP) {
// Floating point operations are hard, but argument passing is soft.
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
} else {
// Floating point operations and argument passing are hard.
assert(ABI == arm::FloatABI::Hard && "Invalid float abi!");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("hard");
}
// Forward the -mglobal-merge option for explicit control over the pass.
if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
options::OPT_mno_global_merge)) {
CmdArgs.push_back("-backend-option");
if (A->getOption().matches(options::OPT_mno_global_merge))
CmdArgs.push_back("-arm-global-merge=false");
else
CmdArgs.push_back("-arm-global-merge=true");
}
if (!Args.hasFlag(options::OPT_mimplicit_float,
options::OPT_mno_implicit_float, true))
CmdArgs.push_back("-no-implicit-float");
}
// ARM tools end.
/// getAArch64TargetCPU - Get the (LLVM) name of the AArch64 cpu we are
/// targeting. Set \p A to the Arg corresponding to the -mcpu or -mtune
/// arguments if they are provided, or to nullptr otherwise.
static std::string getAArch64TargetCPU(const ArgList &Args, Arg *&A) {
std::string CPU;
// If we have -mtune or -mcpu, use that.
if ((A = Args.getLastArg(options::OPT_mtune_EQ))) {
CPU = StringRef(A->getValue()).lower();
} else if ((A = Args.getLastArg(options::OPT_mcpu_EQ))) {
StringRef Mcpu = A->getValue();
CPU = Mcpu.split("+").first.lower();
}
// Handle CPU name is 'native'.
if (CPU == "native")
return llvm::sys::getHostCPUName();
else if (CPU.size())
return CPU;
// Make sure we pick "cyclone" if -arch is used.
// FIXME: Should this be picked by checking the target triple instead?
if (Args.getLastArg(options::OPT_arch))
return "cyclone";
return "generic";
}
void Clang::AddAArch64TargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
Args.hasArg(options::OPT_mkernel) ||
Args.hasArg(options::OPT_fapple_kext))
CmdArgs.push_back("-disable-red-zone");
if (!Args.hasFlag(options::OPT_mimplicit_float,
options::OPT_mno_implicit_float, true))
CmdArgs.push_back("-no-implicit-float");
const char *ABIName = nullptr;
if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
ABIName = A->getValue();
else if (Triple.isOSDarwin())
ABIName = "darwinpcs";
else
ABIName = "aapcs";
CmdArgs.push_back("-target-abi");
CmdArgs.push_back(ABIName);
if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
options::OPT_mno_fix_cortex_a53_835769)) {
CmdArgs.push_back("-backend-option");
if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
else
CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=0");
} else if (Triple.isAndroid()) {
// Enabled A53 errata (835769) workaround by default on android
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-aarch64-fix-cortex-a53-835769=1");
}
// Forward the -mglobal-merge option for explicit control over the pass.
if (Arg *A = Args.getLastArg(options::OPT_mglobal_merge,
options::OPT_mno_global_merge)) {
CmdArgs.push_back("-backend-option");
if (A->getOption().matches(options::OPT_mno_global_merge))
CmdArgs.push_back("-aarch64-global-merge=false");
else
CmdArgs.push_back("-aarch64-global-merge=true");
}
}
// Get CPU and ABI names. They are not independent
// so we have to calculate them together.
void mips::getMipsCPUAndABI(const ArgList &Args, const llvm::Triple &Triple,
StringRef &CPUName, StringRef &ABIName) {
const char *DefMips32CPU = "mips32r2";
const char *DefMips64CPU = "mips64r2";
// MIPS32r6 is the default for mips(el)?-img-linux-gnu and MIPS64r6 is the
// default for mips64(el)?-img-linux-gnu.
if (Triple.getVendor() == llvm::Triple::ImaginationTechnologies &&
Triple.getEnvironment() == llvm::Triple::GNU) {
DefMips32CPU = "mips32r6";
DefMips64CPU = "mips64r6";
}
// MIPS64r6 is the default for Android MIPS64 (mips64el-linux-android).
if (Triple.isAndroid()) {
DefMips32CPU = "mips32";
DefMips64CPU = "mips64r6";
}
// MIPS3 is the default for mips64*-unknown-openbsd.
if (Triple.getOS() == llvm::Triple::OpenBSD)
DefMips64CPU = "mips3";
if (Arg *A = Args.getLastArg(options::OPT_march_EQ, options::OPT_mcpu_EQ))
CPUName = A->getValue();
if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ)) {
ABIName = A->getValue();
// Convert a GNU style Mips ABI name to the name
// accepted by LLVM Mips backend.
ABIName = llvm::StringSwitch<llvm::StringRef>(ABIName)
.Case("32", "o32")
.Case("64", "n64")
.Default(ABIName);
}
// Setup default CPU and ABI names.
if (CPUName.empty() && ABIName.empty()) {
switch (Triple.getArch()) {
default:
llvm_unreachable("Unexpected triple arch name");
case llvm::Triple::mips:
case llvm::Triple::mipsel:
CPUName = DefMips32CPU;
break;
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
CPUName = DefMips64CPU;
break;
}
}
if (ABIName.empty() &&
(Triple.getVendor() == llvm::Triple::MipsTechnologies ||
Triple.getVendor() == llvm::Triple::ImaginationTechnologies)) {
ABIName = llvm::StringSwitch<const char *>(CPUName)
.Case("mips1", "o32")
.Case("mips2", "o32")
.Case("mips3", "n64")
.Case("mips4", "n64")
.Case("mips5", "n64")
.Case("mips32", "o32")
.Case("mips32r2", "o32")
.Case("mips32r3", "o32")
.Case("mips32r5", "o32")
.Case("mips32r6", "o32")
.Case("mips64", "n64")
.Case("mips64r2", "n64")
.Case("mips64r3", "n64")
.Case("mips64r5", "n64")
.Case("mips64r6", "n64")
.Case("octeon", "n64")
.Case("p5600", "o32")
.Default("");
}
if (ABIName.empty()) {
// Deduce ABI name from the target triple.
if (Triple.getArch() == llvm::Triple::mips ||
Triple.getArch() == llvm::Triple::mipsel)
ABIName = "o32";
else
ABIName = "n64";
}
if (CPUName.empty()) {
// Deduce CPU name from ABI name.
CPUName = llvm::StringSwitch<const char *>(ABIName)
.Case("o32", DefMips32CPU)
.Cases("n32", "n64", DefMips64CPU)
.Default("");
}
// FIXME: Warn on inconsistent use of -march and -mabi.
}
std::string mips::getMipsABILibSuffix(const ArgList &Args,
const llvm::Triple &Triple) {
StringRef CPUName, ABIName;
tools::mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
return llvm::StringSwitch<std::string>(ABIName)
.Case("o32", "")
.Case("n32", "32")
.Case("n64", "64");
}
// Convert ABI name to the GNU tools acceptable variant.
static StringRef getGnuCompatibleMipsABIName(StringRef ABI) {
return llvm::StringSwitch<llvm::StringRef>(ABI)
.Case("o32", "32")
.Case("n64", "64")
.Default(ABI);
}
// Select the MIPS float ABI as determined by -msoft-float, -mhard-float,
// and -mfloat-abi=.
static mips::FloatABI getMipsFloatABI(const Driver &D, const ArgList &Args) {
mips::FloatABI ABI = mips::FloatABI::Invalid;
if (Arg *A =
Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
options::OPT_mfloat_abi_EQ)) {
if (A->getOption().matches(options::OPT_msoft_float))
ABI = mips::FloatABI::Soft;
else if (A->getOption().matches(options::OPT_mhard_float))
ABI = mips::FloatABI::Hard;
else {
ABI = llvm::StringSwitch<mips::FloatABI>(A->getValue())
.Case("soft", mips::FloatABI::Soft)
.Case("hard", mips::FloatABI::Hard)
.Default(mips::FloatABI::Invalid);
if (ABI == mips::FloatABI::Invalid && !StringRef(A->getValue()).empty()) {
D.Diag(diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
ABI = mips::FloatABI::Hard;
}
}
}
// If unspecified, choose the default based on the platform.
if (ABI == mips::FloatABI::Invalid) {
// Assume "hard", because it's a default value used by gcc.
// When we start to recognize specific target MIPS processors,
// we will be able to select the default more correctly.
ABI = mips::FloatABI::Hard;
}
assert(ABI != mips::FloatABI::Invalid && "must select an ABI");
return ABI;
}
static void AddTargetFeature(const ArgList &Args,
std::vector<StringRef> &Features,
OptSpecifier OnOpt, OptSpecifier OffOpt,
StringRef FeatureName) {
if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
if (A->getOption().matches(OnOpt))
Features.push_back(Args.MakeArgString("+" + FeatureName));
else
Features.push_back(Args.MakeArgString("-" + FeatureName));
}
}
static void getMIPSTargetFeatures(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features) {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
ABIName = getGnuCompatibleMipsABIName(ABIName);
AddTargetFeature(Args, Features, options::OPT_mno_abicalls,
options::OPT_mabicalls, "noabicalls");
mips::FloatABI FloatABI = getMipsFloatABI(D, Args);
if (FloatABI == mips::FloatABI::Soft) {
// FIXME: Note, this is a hack. We need to pass the selected float
// mode to the MipsTargetInfoBase to define appropriate macros there.
// Now it is the only method.
Features.push_back("+soft-float");
}
if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
StringRef Val = StringRef(A->getValue());
if (Val == "2008") {
if (mips::getSupportedNanEncoding(CPUName) & mips::Nan2008)
Features.push_back("+nan2008");
else {
Features.push_back("-nan2008");
D.Diag(diag::warn_target_unsupported_nan2008) << CPUName;
}
} else if (Val == "legacy") {
if (mips::getSupportedNanEncoding(CPUName) & mips::NanLegacy)
Features.push_back("-nan2008");
else {
Features.push_back("+nan2008");
D.Diag(diag::warn_target_unsupported_nanlegacy) << CPUName;
}
} else
D.Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Val;
}
AddTargetFeature(Args, Features, options::OPT_msingle_float,
options::OPT_mdouble_float, "single-float");
AddTargetFeature(Args, Features, options::OPT_mips16, options::OPT_mno_mips16,
"mips16");
AddTargetFeature(Args, Features, options::OPT_mmicromips,
options::OPT_mno_micromips, "micromips");
AddTargetFeature(Args, Features, options::OPT_mdsp, options::OPT_mno_dsp,
"dsp");
AddTargetFeature(Args, Features, options::OPT_mdspr2, options::OPT_mno_dspr2,
"dspr2");
AddTargetFeature(Args, Features, options::OPT_mmsa, options::OPT_mno_msa,
"msa");
// Add the last -mfp32/-mfpxx/-mfp64, if none are given and the ABI is O32
// pass -mfpxx, or if none are given and fp64a is default, pass fp64 and
// nooddspreg.
if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
options::OPT_mfp64)) {
if (A->getOption().matches(options::OPT_mfp32))
Features.push_back(Args.MakeArgString("-fp64"));
else if (A->getOption().matches(options::OPT_mfpxx)) {
Features.push_back(Args.MakeArgString("+fpxx"));
Features.push_back(Args.MakeArgString("+nooddspreg"));
} else
Features.push_back(Args.MakeArgString("+fp64"));
} else if (mips::shouldUseFPXX(Args, Triple, CPUName, ABIName, FloatABI)) {
Features.push_back(Args.MakeArgString("+fpxx"));
Features.push_back(Args.MakeArgString("+nooddspreg"));
} else if (mips::isFP64ADefault(Triple, CPUName)) {
Features.push_back(Args.MakeArgString("+fp64"));
Features.push_back(Args.MakeArgString("+nooddspreg"));
}
AddTargetFeature(Args, Features, options::OPT_mno_odd_spreg,
options::OPT_modd_spreg, "nooddspreg");
}
void Clang::AddMIPSTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
const Driver &D = getToolChain().getDriver();
StringRef CPUName;
StringRef ABIName;
const llvm::Triple &Triple = getToolChain().getTriple();
mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
CmdArgs.push_back("-target-abi");
CmdArgs.push_back(ABIName.data());
mips::FloatABI ABI = getMipsFloatABI(D, Args);
if (ABI == mips::FloatABI::Soft) {
// Floating point operations and argument passing are soft.
CmdArgs.push_back("-msoft-float");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
} else {
// Floating point operations and argument passing are hard.
assert(ABI == mips::FloatABI::Hard && "Invalid float abi!");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("hard");
}
if (Arg *A = Args.getLastArg(options::OPT_mxgot, options::OPT_mno_xgot)) {
if (A->getOption().matches(options::OPT_mxgot)) {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back("-mxgot");
}
}
if (Arg *A = Args.getLastArg(options::OPT_mldc1_sdc1,
options::OPT_mno_ldc1_sdc1)) {
if (A->getOption().matches(options::OPT_mno_ldc1_sdc1)) {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back("-mno-ldc1-sdc1");
}
}
if (Arg *A = Args.getLastArg(options::OPT_mcheck_zero_division,
options::OPT_mno_check_zero_division)) {
if (A->getOption().matches(options::OPT_mno_check_zero_division)) {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back("-mno-check-zero-division");
}
}
if (Arg *A = Args.getLastArg(options::OPT_G)) {
StringRef v = A->getValue();
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-mips-ssection-threshold=" + v));
A->claim();
}
if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) {
StringRef Val = StringRef(A->getValue());
if (mips::hasCompactBranches(CPUName)) {
if (Val == "never" || Val == "always" || Val == "optimal") {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-mips-compact-branches=" + Val));
} else
D.Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Val;
} else
D.Diag(diag::warn_target_unsupported_compact_branches) << CPUName;
}
}
/// getPPCTargetCPU - Get the (LLVM) name of the PowerPC cpu we are targeting.
static std::string getPPCTargetCPU(const ArgList &Args) {
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
StringRef CPUName = A->getValue();
if (CPUName == "native") {
std::string CPU = llvm::sys::getHostCPUName();
if (!CPU.empty() && CPU != "generic")
return CPU;
else
return "";
}
return llvm::StringSwitch<const char *>(CPUName)
.Case("common", "generic")
.Case("440", "440")
.Case("440fp", "440")
.Case("450", "450")
.Case("601", "601")
.Case("602", "602")
.Case("603", "603")
.Case("603e", "603e")
.Case("603ev", "603ev")
.Case("604", "604")
.Case("604e", "604e")
.Case("620", "620")
.Case("630", "pwr3")
.Case("G3", "g3")
.Case("7400", "7400")
.Case("G4", "g4")
.Case("7450", "7450")
.Case("G4+", "g4+")
.Case("750", "750")
.Case("970", "970")
.Case("G5", "g5")
.Case("a2", "a2")
.Case("a2q", "a2q")
.Case("e500mc", "e500mc")
.Case("e5500", "e5500")
.Case("power3", "pwr3")
.Case("power4", "pwr4")
.Case("power5", "pwr5")
.Case("power5x", "pwr5x")
.Case("power6", "pwr6")
.Case("power6x", "pwr6x")
.Case("power7", "pwr7")
.Case("power8", "pwr8")
.Case("power9", "pwr9")
.Case("pwr3", "pwr3")
.Case("pwr4", "pwr4")
.Case("pwr5", "pwr5")
.Case("pwr5x", "pwr5x")
.Case("pwr6", "pwr6")
.Case("pwr6x", "pwr6x")
.Case("pwr7", "pwr7")
.Case("pwr8", "pwr8")
.Case("pwr9", "pwr9")
.Case("powerpc", "ppc")
.Case("powerpc64", "ppc64")
.Case("powerpc64le", "ppc64le")
.Default("");
}
return "";
}
static void getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features) {
handleTargetFeaturesGroup(Args, Features, options::OPT_m_ppc_Features_Group);
ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
if (FloatABI == ppc::FloatABI::Soft)
Features.push_back("-hard-float");
// Altivec is a bit weird, allow overriding of the Altivec feature here.
AddTargetFeature(Args, Features, options::OPT_faltivec,
options::OPT_fno_altivec, "altivec");
}
ppc::FloatABI ppc::getPPCFloatABI(const Driver &D, const ArgList &Args) {
ppc::FloatABI ABI = ppc::FloatABI::Invalid;
if (Arg *A =
Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
options::OPT_mfloat_abi_EQ)) {
if (A->getOption().matches(options::OPT_msoft_float))
ABI = ppc::FloatABI::Soft;
else if (A->getOption().matches(options::OPT_mhard_float))
ABI = ppc::FloatABI::Hard;
else {
ABI = llvm::StringSwitch<ppc::FloatABI>(A->getValue())
.Case("soft", ppc::FloatABI::Soft)
.Case("hard", ppc::FloatABI::Hard)
.Default(ppc::FloatABI::Invalid);
if (ABI == ppc::FloatABI::Invalid && !StringRef(A->getValue()).empty()) {
D.Diag(diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
ABI = ppc::FloatABI::Hard;
}
}
}
// If unspecified, choose the default based on the platform.
if (ABI == ppc::FloatABI::Invalid) {
ABI = ppc::FloatABI::Hard;
}
return ABI;
}
void Clang::AddPPCTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
// Select the ABI to use.
const char *ABIName = nullptr;
if (getToolChain().getTriple().isOSLinux())
switch (getToolChain().getArch()) {
case llvm::Triple::ppc64: {
// When targeting a processor that supports QPX, or if QPX is
// specifically enabled, default to using the ABI that supports QPX (so
// long as it is not specifically disabled).
bool HasQPX = false;
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
HasQPX = A->getValue() == StringRef("a2q");
HasQPX = Args.hasFlag(options::OPT_mqpx, options::OPT_mno_qpx, HasQPX);
if (HasQPX) {
ABIName = "elfv1-qpx";
break;
}
ABIName = "elfv1";
break;
}
case llvm::Triple::ppc64le:
ABIName = "elfv2";
break;
default:
break;
}
if (Arg *A = Args.getLastArg(options::OPT_mabi_EQ))
// The ppc64 linux abis are all "altivec" abis by default. Accept and ignore
// the option if given as we don't have backend support for any targets
// that don't use the altivec abi.
if (StringRef(A->getValue()) != "altivec")
ABIName = A->getValue();
ppc::FloatABI FloatABI =
ppc::getPPCFloatABI(getToolChain().getDriver(), Args);
if (FloatABI == ppc::FloatABI::Soft) {
// Floating point operations and argument passing are soft.
CmdArgs.push_back("-msoft-float");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
} else {
// Floating point operations and argument passing are hard.
assert(FloatABI == ppc::FloatABI::Hard && "Invalid float abi!");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("hard");
}
if (ABIName) {
CmdArgs.push_back("-target-abi");
CmdArgs.push_back(ABIName);
}
}
bool ppc::hasPPCAbiArg(const ArgList &Args, const char *Value) {
Arg *A = Args.getLastArg(options::OPT_mabi_EQ);
return A && (A->getValue() == StringRef(Value));
}
/// Get the (LLVM) name of the R600 gpu we are targeting.
static std::string getR600TargetGPU(const ArgList &Args) {
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
const char *GPUName = A->getValue();
return llvm::StringSwitch<const char *>(GPUName)
.Cases("rv630", "rv635", "r600")
.Cases("rv610", "rv620", "rs780", "rs880")
.Case("rv740", "rv770")
.Case("palm", "cedar")
.Cases("sumo", "sumo2", "sumo")
.Case("hemlock", "cypress")
.Case("aruba", "cayman")
.Default(GPUName);
}
return "";
}
static std::string getLanaiTargetCPU(const ArgList &Args) {
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
return A->getValue();
}
return "";
}
sparc::FloatABI sparc::getSparcFloatABI(const Driver &D,
const ArgList &Args) {
sparc::FloatABI ABI = sparc::FloatABI::Invalid;
if (Arg *A =
Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
options::OPT_mfloat_abi_EQ)) {
if (A->getOption().matches(options::OPT_msoft_float))
ABI = sparc::FloatABI::Soft;
else if (A->getOption().matches(options::OPT_mhard_float))
ABI = sparc::FloatABI::Hard;
else {
ABI = llvm::StringSwitch<sparc::FloatABI>(A->getValue())
.Case("soft", sparc::FloatABI::Soft)
.Case("hard", sparc::FloatABI::Hard)
.Default(sparc::FloatABI::Invalid);
if (ABI == sparc::FloatABI::Invalid &&
!StringRef(A->getValue()).empty()) {
D.Diag(diag::err_drv_invalid_mfloat_abi) << A->getAsString(Args);
ABI = sparc::FloatABI::Hard;
}
}
}
// If unspecified, choose the default based on the platform.
// Only the hard-float ABI on Sparc is standardized, and it is the
// default. GCC also supports a nonstandard soft-float ABI mode, also
// implemented in LLVM. However as this is not standard we set the default
// to be hard-float.
if (ABI == sparc::FloatABI::Invalid) {
ABI = sparc::FloatABI::Hard;
}
return ABI;
}
static void getSparcTargetFeatures(const Driver &D, const ArgList &Args,
std::vector<StringRef> &Features) {
sparc::FloatABI FloatABI = sparc::getSparcFloatABI(D, Args);
if (FloatABI == sparc::FloatABI::Soft)
Features.push_back("+soft-float");
}
void Clang::AddSparcTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
sparc::FloatABI FloatABI =
sparc::getSparcFloatABI(getToolChain().getDriver(), Args);
if (FloatABI == sparc::FloatABI::Soft) {
// Floating point operations and argument passing are soft.
CmdArgs.push_back("-msoft-float");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
} else {
// Floating point operations and argument passing are hard.
assert(FloatABI == sparc::FloatABI::Hard && "Invalid float abi!");
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("hard");
}
}
void Clang::AddSystemZTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false))
CmdArgs.push_back("-mbackchain");
}
static const char *getSystemZTargetCPU(const ArgList &Args) {
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
return A->getValue();
return "z10";
}
static void getSystemZTargetFeatures(const ArgList &Args,
std::vector<StringRef> &Features) {
// -m(no-)htm overrides use of the transactional-execution facility.
if (Arg *A = Args.getLastArg(options::OPT_mhtm, options::OPT_mno_htm)) {
if (A->getOption().matches(options::OPT_mhtm))
Features.push_back("+transactional-execution");
else
Features.push_back("-transactional-execution");
}
// -m(no-)vx overrides use of the vector facility.
if (Arg *A = Args.getLastArg(options::OPT_mvx, options::OPT_mno_vx)) {
if (A->getOption().matches(options::OPT_mvx))
Features.push_back("+vector");
else
Features.push_back("-vector");
}
}
static const char *getX86TargetCPU(const ArgList &Args,
const llvm::Triple &Triple) {
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
if (StringRef(A->getValue()) != "native") {
if (Triple.isOSDarwin() && Triple.getArchName() == "x86_64h")
return "core-avx2";
return A->getValue();
}
// FIXME: Reject attempts to use -march=native unless the target matches
// the host.
//
// FIXME: We should also incorporate the detected target features for use
// with -native.
std::string CPU = llvm::sys::getHostCPUName();
if (!CPU.empty() && CPU != "generic")
return Args.MakeArgString(CPU);
}
if (const Arg *A = Args.getLastArg(options::OPT__SLASH_arch)) {
// Mapping built by referring to X86TargetInfo::getDefaultFeatures().
StringRef Arch = A->getValue();
const char *CPU;
if (Triple.getArch() == llvm::Triple::x86) {
CPU = llvm::StringSwitch<const char *>(Arch)
.Case("IA32", "i386")
.Case("SSE", "pentium3")
.Case("SSE2", "pentium4")
.Case("AVX", "sandybridge")
.Case("AVX2", "haswell")
.Default(nullptr);
} else {
CPU = llvm::StringSwitch<const char *>(Arch)
.Case("AVX", "sandybridge")
.Case("AVX2", "haswell")
.Default(nullptr);
}
if (CPU)
return CPU;
}
// Select the default CPU if none was given (or detection failed).
if (Triple.getArch() != llvm::Triple::x86_64 &&
Triple.getArch() != llvm::Triple::x86)
return nullptr; // This routine is only handling x86 targets.
bool Is64Bit = Triple.getArch() == llvm::Triple::x86_64;
// FIXME: Need target hooks.
if (Triple.isOSDarwin()) {
if (Triple.getArchName() == "x86_64h")
return "core-avx2";
return Is64Bit ? "core2" : "yonah";
}
// Set up default CPU name for PS4 compilers.
if (Triple.isPS4CPU())
return "btver2";
// On Android use targets compatible with gcc
if (Triple.isAndroid())
return Is64Bit ? "x86-64" : "i686";
// Everything else goes to x86-64 in 64-bit mode.
if (Is64Bit)
return "x86-64";
switch (Triple.getOS()) {
case llvm::Triple::FreeBSD:
case llvm::Triple::NetBSD:
case llvm::Triple::OpenBSD:
return "i486";
case llvm::Triple::Haiku:
return "i586";
case llvm::Triple::Bitrig:
return "i686";
default:
// Fallback to p4.
return "pentium4";
}
}
/// Get the (LLVM) name of the WebAssembly cpu we are targeting.
static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
// If we have -mcpu=, use that.
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
StringRef CPU = A->getValue();
#ifdef __wasm__
// Handle "native" by examining the host. "native" isn't meaningful when
// cross compiling, so only support this when the host is also WebAssembly.
if (CPU == "native")
return llvm::sys::getHostCPUName();
#endif
return CPU;
}
return "generic";
}
static std::string getCPUName(const ArgList &Args, const llvm::Triple &T,
bool FromAs = false) {
Arg *A;
switch (T.getArch()) {
default:
return "";
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
return getAArch64TargetCPU(Args, A);
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb: {
StringRef MArch, MCPU;
getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
return arm::getARMTargetCPU(MCPU, MArch, T);
}
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el: {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
return CPUName;
}
case llvm::Triple::nvptx:
case llvm::Triple::nvptx64:
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
return A->getValue();
return "";
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le: {
std::string TargetCPUName = getPPCTargetCPU(Args);
// LLVM may default to generating code for the native CPU,
// but, like gcc, we default to a more generic option for
// each architecture. (except on Darwin)
if (TargetCPUName.empty() && !T.isOSDarwin()) {
if (T.getArch() == llvm::Triple::ppc64)
TargetCPUName = "ppc64";
else if (T.getArch() == llvm::Triple::ppc64le)
TargetCPUName = "ppc64le";
else
TargetCPUName = "ppc";
}
return TargetCPUName;
}
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
case llvm::Triple::sparcv9:
if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
return A->getValue();
return "";
case llvm::Triple::x86:
case llvm::Triple::x86_64:
return getX86TargetCPU(Args, T);
case llvm::Triple::hexagon:
return "hexagon" +
toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
case llvm::Triple::lanai:
return getLanaiTargetCPU(Args);
case llvm::Triple::systemz:
return getSystemZTargetCPU(Args);
case llvm::Triple::r600:
case llvm::Triple::amdgcn:
return getR600TargetGPU(Args);
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
return getWebAssemblyTargetCPU(Args);
}
}
static unsigned getLTOParallelism(const ArgList &Args, const Driver &D) {
unsigned Parallelism = 0;
Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
if (LtoJobsArg &&
StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
<< LtoJobsArg->getValue();
return Parallelism;
}
// CloudABI and WebAssembly use -ffunction-sections and -fdata-sections by
// default.
static bool isUseSeparateSections(const llvm::Triple &Triple) {
return Triple.getOS() == llvm::Triple::CloudABI ||
Triple.getArch() == llvm::Triple::wasm32 ||
Triple.getArch() == llvm::Triple::wasm64;
}
static void AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
ArgStringList &CmdArgs, bool IsThinLTO,
const Driver &D) {
// Tell the linker to load the plugin. This has to come before AddLinkerInputs
// as gold requires -plugin to come before any -plugin-opt that -Wl might
// forward.
CmdArgs.push_back("-plugin");
std::string Plugin =
ToolChain.getDriver().Dir + "/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold.so";
CmdArgs.push_back(Args.MakeArgString(Plugin));
// Try to pass driver level flags relevant to LTO code generation down to
// the plugin.
// Handle flags for selecting CPU variants.
std::string CPU = getCPUName(Args, ToolChain.getTriple());
if (!CPU.empty())
CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
StringRef OOpt;
if (A->getOption().matches(options::OPT_O4) ||
A->getOption().matches(options::OPT_Ofast))
OOpt = "3";
else if (A->getOption().matches(options::OPT_O))
OOpt = A->getValue();
else if (A->getOption().matches(options::OPT_O0))
OOpt = "0";
if (!OOpt.empty())
CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
}
if (IsThinLTO)
CmdArgs.push_back("-plugin-opt=thinlto");
if (unsigned Parallelism = getLTOParallelism(Args, D))
CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=jobs=") +
llvm::to_string(Parallelism)));
// If an explicit debugger tuning argument appeared, pass it along.
if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
options::OPT_ggdbN_Group)) {
if (A->getOption().matches(options::OPT_glldb))
CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
else if (A->getOption().matches(options::OPT_gsce))
CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
else
CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
}
bool UseSeparateSections =
isUseSeparateSections(ToolChain.getEffectiveTriple());
if (Args.hasFlag(options::OPT_ffunction_sections,
options::OPT_fno_function_sections, UseSeparateSections)) {
CmdArgs.push_back("-plugin-opt=-function-sections");
}
if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
UseSeparateSections)) {
CmdArgs.push_back("-plugin-opt=-data-sections");
}
}
/// This is a helper function for validating the optional refinement step
/// parameter in reciprocal argument strings. Return false if there is an error
/// parsing the refinement step. Otherwise, return true and set the Position
/// of the refinement step in the input string.
static bool getRefinementStep(StringRef In, const Driver &D,
const Arg &A, size_t &Position) {
const char RefinementStepToken = ':';
Position = In.find(RefinementStepToken);
if (Position != StringRef::npos) {
StringRef Option = A.getOption().getName();
StringRef RefStep = In.substr(Position + 1);
// Allow exactly one numeric character for the additional refinement
// step parameter. This is reasonable for all currently-supported
// operations and architectures because we would expect that a larger value
// of refinement steps would cause the estimate "optimization" to
// under-perform the native operation. Also, if the estimate does not
// converge quickly, it probably will not ever converge, so further
// refinement steps will not produce a better answer.
if (RefStep.size() != 1) {
D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
return false;
}
char RefStepChar = RefStep[0];
if (RefStepChar < '0' || RefStepChar > '9') {
D.Diag(diag::err_drv_invalid_value) << Option << RefStep;
return false;
}
}
return true;
}
/// The -mrecip flag requires processing of many optional parameters.
static void ParseMRecip(const Driver &D, const ArgList &Args,
ArgStringList &OutStrings) {
StringRef DisabledPrefixIn = "!";
StringRef DisabledPrefixOut = "!";
StringRef EnabledPrefixOut = "";
StringRef Out = "-mrecip=";
Arg *A = Args.getLastArg(options::OPT_mrecip, options::OPT_mrecip_EQ);
if (!A)
return;
unsigned NumOptions = A->getNumValues();
if (NumOptions == 0) {
// No option is the same as "all".
OutStrings.push_back(Args.MakeArgString(Out + "all"));
return;
}
// Pass through "all", "none", or "default" with an optional refinement step.
if (NumOptions == 1) {
StringRef Val = A->getValue(0);
size_t RefStepLoc;
if (!getRefinementStep(Val, D, *A, RefStepLoc))
return;
StringRef ValBase = Val.slice(0, RefStepLoc);
if (ValBase == "all" || ValBase == "none" || ValBase == "default") {
OutStrings.push_back(Args.MakeArgString(Out + Val));
return;
}
}
// Each reciprocal type may be enabled or disabled individually.
// Check each input value for validity, concatenate them all back together,
// and pass through.
llvm::StringMap<bool> OptionStrings;
OptionStrings.insert(std::make_pair("divd", false));
OptionStrings.insert(std::make_pair("divf", false));
OptionStrings.insert(std::make_pair("vec-divd", false));
OptionStrings.insert(std::make_pair("vec-divf", false));
OptionStrings.insert(std::make_pair("sqrtd", false));
OptionStrings.insert(std::make_pair("sqrtf", false));
OptionStrings.insert(std::make_pair("vec-sqrtd", false));
OptionStrings.insert(std::make_pair("vec-sqrtf", false));
for (unsigned i = 0; i != NumOptions; ++i) {
StringRef Val = A->getValue(i);
bool IsDisabled = Val.startswith(DisabledPrefixIn);
// Ignore the disablement token for string matching.
if (IsDisabled)
Val = Val.substr(1);
size_t RefStep;
if (!getRefinementStep(Val, D, *A, RefStep))
return;
StringRef ValBase = Val.slice(0, RefStep);
llvm::StringMap<bool>::iterator OptionIter = OptionStrings.find(ValBase);
if (OptionIter == OptionStrings.end()) {
// Try again specifying float suffix.
OptionIter = OptionStrings.find(ValBase.str() + 'f');
if (OptionIter == OptionStrings.end()) {
// The input name did not match any known option string.
D.Diag(diag::err_drv_unknown_argument) << Val;
return;
}
// The option was specified without a float or double suffix.
// Make sure that the double entry was not already specified.
// The float entry will be checked below.
if (OptionStrings[ValBase.str() + 'd']) {
D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
return;
}
}
if (OptionIter->second == true) {
// Duplicate option specified.
D.Diag(diag::err_drv_invalid_value) << A->getOption().getName() << Val;
return;
}
// Mark the matched option as found. Do not allow duplicate specifiers.
OptionIter->second = true;
// If the precision was not specified, also mark the double entry as found.
if (ValBase.back() != 'f' && ValBase.back() != 'd')
OptionStrings[ValBase.str() + 'd'] = true;
// Build the output string.
StringRef Prefix = IsDisabled ? DisabledPrefixOut : EnabledPrefixOut;
Out = Args.MakeArgString(Out + Prefix + Val);
if (i != NumOptions - 1)
Out = Args.MakeArgString(Out + ",");
}
OutStrings.push_back(Args.MakeArgString(Out));
}
static void getX86TargetFeatures(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args,
std::vector<StringRef> &Features) {
// If -march=native, autodetect the feature list.
if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
if (StringRef(A->getValue()) == "native") {
llvm::StringMap<bool> HostFeatures;
if (llvm::sys::getHostCPUFeatures(HostFeatures))
for (auto &F : HostFeatures)
Features.push_back(
Args.MakeArgString((F.second ? "+" : "-") + F.first()));
}
}
if (Triple.getArchName() == "x86_64h") {
// x86_64h implies quite a few of the more modern subtarget features
// for Haswell class CPUs, but not all of them. Opt-out of a few.
Features.push_back("-rdrnd");
Features.push_back("-aes");
Features.push_back("-pclmul");
Features.push_back("-rtm");
Features.push_back("-hle");
Features.push_back("-fsgsbase");
}
const llvm::Triple::ArchType ArchType = Triple.getArch();
// Add features to be compatible with gcc for Android.
if (Triple.isAndroid()) {
if (ArchType == llvm::Triple::x86_64) {
Features.push_back("+sse4.2");
Features.push_back("+popcnt");
} else
Features.push_back("+ssse3");
}
// Set features according to the -arch flag on MSVC.
if (Arg *A = Args.getLastArg(options::OPT__SLASH_arch)) {
StringRef Arch = A->getValue();
bool ArchUsed = false;
// First, look for flags that are shared in x86 and x86-64.
if (ArchType == llvm::Triple::x86_64 || ArchType == llvm::Triple::x86) {
if (Arch == "AVX" || Arch == "AVX2") {
ArchUsed = true;
Features.push_back(Args.MakeArgString("+" + Arch.lower()));
}
}
// Then, look for x86-specific flags.
if (ArchType == llvm::Triple::x86) {
if (Arch == "IA32") {
ArchUsed = true;
} else if (Arch == "SSE" || Arch == "SSE2") {
ArchUsed = true;
Features.push_back(Args.MakeArgString("+" + Arch.lower()));
}
}
if (!ArchUsed)
D.Diag(clang::diag::warn_drv_unused_argument) << A->getAsString(Args);
}
// Now add any that the user explicitly requested on the command line,
// which may override the defaults.
handleTargetFeaturesGroup(Args, Features, options::OPT_m_x86_Features_Group);
}
void Clang::AddX86TargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (!Args.hasFlag(options::OPT_mred_zone, options::OPT_mno_red_zone, true) ||
Args.hasArg(options::OPT_mkernel) ||
Args.hasArg(options::OPT_fapple_kext))
CmdArgs.push_back("-disable-red-zone");
// Default to avoid implicit floating-point for kernel/kext code, but allow
// that to be overridden with -mno-soft-float.
bool NoImplicitFloat = (Args.hasArg(options::OPT_mkernel) ||
Args.hasArg(options::OPT_fapple_kext));
if (Arg *A = Args.getLastArg(
options::OPT_msoft_float, options::OPT_mno_soft_float,
options::OPT_mimplicit_float, options::OPT_mno_implicit_float)) {
const Option &O = A->getOption();
NoImplicitFloat = (O.matches(options::OPT_mno_implicit_float) ||
O.matches(options::OPT_msoft_float));
}
if (NoImplicitFloat)
CmdArgs.push_back("-no-implicit-float");
if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
StringRef Value = A->getValue();
if (Value == "intel" || Value == "att") {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
} else {
getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Value;
}
}
// Set flags to support MCU ABI.
if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
CmdArgs.push_back("-mfloat-abi");
CmdArgs.push_back("soft");
CmdArgs.push_back("-mstack-alignment=4");
}
}
void Clang::AddHexagonTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
CmdArgs.push_back("-mqdsp6-compat");
CmdArgs.push_back("-Wreturn-type");
if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
std::string N = llvm::utostr(G.getValue());
std::string Opt = std::string("-hexagon-small-data-threshold=") + N;
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString(Opt));
}
if (!Args.hasArg(options::OPT_fno_short_enums))
CmdArgs.push_back("-fshort-enums");
if (Args.getLastArg(options::OPT_mieee_rnd_near)) {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back("-enable-hexagon-ieee-rnd-near");
}
CmdArgs.push_back("-mllvm");
CmdArgs.push_back("-machine-sink-split=0");
}
void Clang::AddLanaiTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
StringRef CPUName = A->getValue();
CmdArgs.push_back("-target-cpu");
CmdArgs.push_back(Args.MakeArgString(CPUName));
}
if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
StringRef Value = A->getValue();
// Only support mregparm=4 to support old usage. Report error for all other
// cases.
int Mregparm;
if (Value.getAsInteger(10, Mregparm)) {
if (Mregparm != 4) {
getToolChain().getDriver().Diag(
diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Value;
}
}
}
}
void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
// Default to "hidden" visibility.
if (!Args.hasArg(options::OPT_fvisibility_EQ,
options::OPT_fvisibility_ms_compat)) {
CmdArgs.push_back("-fvisibility");
CmdArgs.push_back("hidden");
}
}
// Decode AArch64 features from string like +[no]featureA+[no]featureB+...
static bool DecodeAArch64Features(const Driver &D, StringRef text,
std::vector<StringRef> &Features) {
SmallVector<StringRef, 8> Split;
text.split(Split, StringRef("+"), -1, false);
for (StringRef Feature : Split) {
StringRef FeatureName = llvm::AArch64::getArchExtFeature(Feature);
if (!FeatureName.empty())
Features.push_back(FeatureName);
else if (Feature == "neon" || Feature == "noneon")
D.Diag(diag::err_drv_no_neon_modifier);
else
return false;
}
return true;
}
// Check if the CPU name and feature modifiers in -mcpu are legal. If yes,
// decode CPU and feature.
static bool DecodeAArch64Mcpu(const Driver &D, StringRef Mcpu, StringRef &CPU,
std::vector<StringRef> &Features) {
std::pair<StringRef, StringRef> Split = Mcpu.split("+");
CPU = Split.first;
if (CPU == "generic") {
Features.push_back("+neon");
} else {
unsigned ArchKind = llvm::AArch64::parseCPUArch(CPU);
unsigned Extersion = llvm::AArch64::getDefaultExtensions(CPU, ArchKind);
if (!llvm::AArch64::getExtensionFeatures(Extersion, Features))
return false;
}
if (Split.second.size() && !DecodeAArch64Features(D, Split.second, Features))
return false;
return true;
}
static bool
getAArch64ArchFeaturesFromMarch(const Driver &D, StringRef March,
const ArgList &Args,
std::vector<StringRef> &Features) {
std::string MarchLowerCase = March.lower();
std::pair<StringRef, StringRef> Split = StringRef(MarchLowerCase).split("+");
unsigned ArchKind = llvm::AArch64::parseArch(Split.first);
if (ArchKind == static_cast<unsigned>(llvm::AArch64::ArchKind::AK_INVALID) ||
!llvm::AArch64::getArchFeatures(ArchKind, Features) ||
(Split.second.size() && !DecodeAArch64Features(D, Split.second, Features)))
return false;
return true;
}
static bool
getAArch64ArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu,
const ArgList &Args,
std::vector<StringRef> &Features) {
StringRef CPU;
std::string McpuLowerCase = Mcpu.lower();
if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, Features))
return false;
return true;
}
static bool
getAArch64MicroArchFeaturesFromMtune(const Driver &D, StringRef Mtune,
const ArgList &Args,
std::vector<StringRef> &Features) {
std::string MtuneLowerCase = Mtune.lower();
// Handle CPU name is 'native'.
if (MtuneLowerCase == "native")
MtuneLowerCase = llvm::sys::getHostCPUName();
if (MtuneLowerCase == "cyclone") {
Features.push_back("+zcm");
Features.push_back("+zcz");
}
return true;
}
static bool
getAArch64MicroArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu,
const ArgList &Args,
std::vector<StringRef> &Features) {
StringRef CPU;
std::vector<StringRef> DecodedFeature;
std::string McpuLowerCase = Mcpu.lower();
if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, DecodedFeature))
return false;
return getAArch64MicroArchFeaturesFromMtune(D, CPU, Args, Features);
}
static void getAArch64TargetFeatures(const Driver &D, const ArgList &Args,
std::vector<StringRef> &Features) {
Arg *A;
bool success = true;
// Enable NEON by default.
Features.push_back("+neon");
if ((A = Args.getLastArg(options::OPT_march_EQ)))
success = getAArch64ArchFeaturesFromMarch(D, A->getValue(), Args, Features);
else if ((A = Args.getLastArg(options::OPT_mcpu_EQ)))
success = getAArch64ArchFeaturesFromMcpu(D, A->getValue(), Args, Features);
else if (Args.hasArg(options::OPT_arch))
success = getAArch64ArchFeaturesFromMcpu(D, getAArch64TargetCPU(Args, A),
Args, Features);
if (success && (A = Args.getLastArg(options::OPT_mtune_EQ)))
success =
getAArch64MicroArchFeaturesFromMtune(D, A->getValue(), Args, Features);
else if (success && (A = Args.getLastArg(options::OPT_mcpu_EQ)))
success =
getAArch64MicroArchFeaturesFromMcpu(D, A->getValue(), Args, Features);
else if (success && Args.hasArg(options::OPT_arch))
success = getAArch64MicroArchFeaturesFromMcpu(
D, getAArch64TargetCPU(Args, A), Args, Features);
if (!success)
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
if (Args.getLastArg(options::OPT_mgeneral_regs_only)) {
Features.push_back("-fp-armv8");
Features.push_back("-crypto");
Features.push_back("-neon");
}
// En/disable crc
if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
if (A->getOption().matches(options::OPT_mcrc))
Features.push_back("+crc");
else
Features.push_back("-crc");
}
if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access,
options::OPT_munaligned_access))
if (A->getOption().matches(options::OPT_mno_unaligned_access))
Features.push_back("+strict-align");
if (Args.hasArg(options::OPT_ffixed_x18))
Features.push_back("+reserve-x18");
}
static void getHexagonTargetFeatures(const ArgList &Args,
std::vector<StringRef> &Features) {
handleTargetFeaturesGroup(Args, Features,
options::OPT_m_hexagon_Features_Group);
bool UseLongCalls = false;
if (Arg *A = Args.getLastArg(options::OPT_mlong_calls,
options::OPT_mno_long_calls)) {
if (A->getOption().matches(options::OPT_mlong_calls))
UseLongCalls = true;
}
Features.push_back(UseLongCalls ? "+long-calls" : "-long-calls");
}
static void getWebAssemblyTargetFeatures(const ArgList &Args,
std::vector<StringRef> &Features) {
handleTargetFeaturesGroup(Args, Features, options::OPT_m_wasm_Features_Group);
}
static void getAMDGPUTargetFeatures(const Driver &D, const ArgList &Args,
std::vector<StringRef> &Features) {
if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi)) {
StringRef value = dAbi->getValue();
if (value == "1.0") {
Features.push_back("+amdgpu-debugger-insert-nops");
Features.push_back("+amdgpu-debugger-reserve-regs");
Features.push_back("+amdgpu-debugger-emit-prologue");
} else {
D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args);
}
}
handleTargetFeaturesGroup(
Args, Features, options::OPT_m_amdgpu_Features_Group);
}
static void getTargetFeatures(const ToolChain &TC, const llvm::Triple &Triple,
const ArgList &Args, ArgStringList &CmdArgs,
bool ForAS) {
const Driver &D = TC.getDriver();
std::vector<StringRef> Features;
switch (Triple.getArch()) {
default:
break;
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
getMIPSTargetFeatures(D, Triple, Args, Features);
break;
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
getARMTargetFeatures(TC, Triple, Args, Features, ForAS);
break;
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
getPPCTargetFeatures(D, Triple, Args, Features);
break;
case llvm::Triple::systemz:
getSystemZTargetFeatures(Args, Features);
break;
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
getAArch64TargetFeatures(D, Args, Features);
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
getX86TargetFeatures(D, Triple, Args, Features);
break;
case llvm::Triple::hexagon:
getHexagonTargetFeatures(Args, Features);
break;
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
getWebAssemblyTargetFeatures(Args, Features);
break;
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
case llvm::Triple::sparcv9:
getSparcTargetFeatures(D, Args, Features);
break;
case llvm::Triple::r600:
case llvm::Triple::amdgcn:
getAMDGPUTargetFeatures(D, Args, Features);
break;
}
// Find the last of each feature.
llvm::StringMap<unsigned> LastOpt;
for (unsigned I = 0, N = Features.size(); I < N; ++I) {
StringRef Name = Features[I];
assert(Name[0] == '-' || Name[0] == '+');
LastOpt[Name.drop_front(1)] = I;
}
for (unsigned I = 0, N = Features.size(); I < N; ++I) {
// If this feature was overridden, ignore it.
StringRef Name = Features[I];
llvm::StringMap<unsigned>::iterator LastI = LastOpt.find(Name.drop_front(1));
assert(LastI != LastOpt.end());
unsigned Last = LastI->second;
if (Last != I)
continue;
CmdArgs.push_back("-target-feature");
CmdArgs.push_back(Name.data());
}
}
static bool
shouldUseExceptionTablesForObjCExceptions(const ObjCRuntime &runtime,
const llvm::Triple &Triple) {
// We use the zero-cost exception tables for Objective-C if the non-fragile
// ABI is enabled or when compiling for x86_64 and ARM on Snow Leopard and
// later.
if (runtime.isNonFragile())
return true;
if (!Triple.isMacOSX())
return false;
return (!Triple.isMacOSXVersionLT(10, 5) &&
(Triple.getArch() == llvm::Triple::x86_64 ||
Triple.getArch() == llvm::Triple::arm));
}
/// Adds exception related arguments to the driver command arguments. There's a
/// master flag, -fexceptions and also language specific flags to enable/disable
/// C++ and Objective-C exceptions. This makes it possible to for example
/// disable C++ exceptions but enable Objective-C exceptions.
static void addExceptionArgs(const ArgList &Args, types::ID InputType,
const ToolChain &TC, bool KernelOrKext,
const ObjCRuntime &objcRuntime,
ArgStringList &CmdArgs) {
const Driver &D = TC.getDriver();
const llvm::Triple &Triple = TC.getTriple();
if (KernelOrKext) {
// -mkernel and -fapple-kext imply no exceptions, so claim exception related
// arguments now to avoid warnings about unused arguments.
Args.ClaimAllArgs(options::OPT_fexceptions);
Args.ClaimAllArgs(options::OPT_fno_exceptions);
Args.ClaimAllArgs(options::OPT_fobjc_exceptions);
Args.ClaimAllArgs(options::OPT_fno_objc_exceptions);
Args.ClaimAllArgs(options::OPT_fcxx_exceptions);
Args.ClaimAllArgs(options::OPT_fno_cxx_exceptions);
return;
}
// See if the user explicitly enabled exceptions.
bool EH = Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
false);
// Obj-C exceptions are enabled by default, regardless of -fexceptions. This
// is not necessarily sensible, but follows GCC.
if (types::isObjC(InputType) &&
Args.hasFlag(options::OPT_fobjc_exceptions,
options::OPT_fno_objc_exceptions, true)) {
CmdArgs.push_back("-fobjc-exceptions");
EH |= shouldUseExceptionTablesForObjCExceptions(objcRuntime, Triple);
}
if (types::isCXX(InputType)) {
// Disable C++ EH by default on XCore and PS4.
bool CXXExceptionsEnabled =
Triple.getArch() != llvm::Triple::xcore && !Triple.isPS4CPU();
Arg *ExceptionArg = Args.getLastArg(
options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
options::OPT_fexceptions, options::OPT_fno_exceptions);
if (ExceptionArg)
CXXExceptionsEnabled =
ExceptionArg->getOption().matches(options::OPT_fcxx_exceptions) ||
ExceptionArg->getOption().matches(options::OPT_fexceptions);
if (CXXExceptionsEnabled) {
if (Triple.isPS4CPU()) {
ToolChain::RTTIMode RTTIMode = TC.getRTTIMode();
assert(ExceptionArg &&
"On the PS4 exceptions should only be enabled if passing "
"an argument");
if (RTTIMode == ToolChain::RM_DisabledExplicitly) {
const Arg *RTTIArg = TC.getRTTIArg();
assert(RTTIArg && "RTTI disabled explicitly but no RTTIArg!");
D.Diag(diag::err_drv_argument_not_allowed_with)
<< RTTIArg->getAsString(Args) << ExceptionArg->getAsString(Args);
} else if (RTTIMode == ToolChain::RM_EnabledImplicitly)
D.Diag(diag::warn_drv_enabling_rtti_with_exceptions);
} else
assert(TC.getRTTIMode() != ToolChain::RM_DisabledImplicitly);
CmdArgs.push_back("-fcxx-exceptions");
EH = true;
}
}
if (EH)
CmdArgs.push_back("-fexceptions");
}
static bool ShouldDisableAutolink(const ArgList &Args, const ToolChain &TC) {
bool Default = true;
if (TC.getTriple().isOSDarwin()) {
// The native darwin assembler doesn't support the linker_option directives,
// so we disable them if we think the .s file will be passed to it.
Default = TC.useIntegratedAs();
}
return !Args.hasFlag(options::OPT_fautolink, options::OPT_fno_autolink,
Default);
}
static bool ShouldDisableDwarfDirectory(const ArgList &Args,
const ToolChain &TC) {
bool UseDwarfDirectory =
Args.hasFlag(options::OPT_fdwarf_directory_asm,
options::OPT_fno_dwarf_directory_asm, TC.useIntegratedAs());
return !UseDwarfDirectory;
}
/// \brief Check whether the given input tree contains any compilation actions.
static bool ContainsCompileAction(const Action *A) {
if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A))
return true;
for (const auto &AI : A->inputs())
if (ContainsCompileAction(AI))
return true;
return false;
}
/// \brief Check if -relax-all should be passed to the internal assembler.
/// This is done by default when compiling non-assembler source with -O0.
static bool UseRelaxAll(Compilation &C, const ArgList &Args) {
bool RelaxDefault = true;
if (Arg *A = Args.getLastArg(options::OPT_O_Group))
RelaxDefault = A->getOption().matches(options::OPT_O0);
if (RelaxDefault) {
RelaxDefault = false;
for (const auto &Act : C.getActions()) {
if (ContainsCompileAction(Act)) {
RelaxDefault = true;
break;
}
}
}
return Args.hasFlag(options::OPT_mrelax_all, options::OPT_mno_relax_all,
RelaxDefault);
}
// Convert an arg of the form "-gN" or "-ggdbN" or one of their aliases
// to the corresponding DebugInfoKind.
static codegenoptions::DebugInfoKind DebugLevelToInfoKind(const Arg &A) {
assert(A.getOption().matches(options::OPT_gN_Group) &&
"Not a -g option that specifies a debug-info level");
if (A.getOption().matches(options::OPT_g0) ||
A.getOption().matches(options::OPT_ggdb0))
return codegenoptions::NoDebugInfo;
if (A.getOption().matches(options::OPT_gline_tables_only) ||
A.getOption().matches(options::OPT_ggdb1))
return codegenoptions::DebugLineTablesOnly;
return codegenoptions::LimitedDebugInfo;
}
// Extract the integer N from a string spelled "-dwarf-N", returning 0
// on mismatch. The StringRef input (rather than an Arg) allows
// for use by the "-Xassembler" option parser.
static unsigned DwarfVersionNum(StringRef ArgValue) {
return llvm::StringSwitch<unsigned>(ArgValue)
.Case("-gdwarf-2", 2)
.Case("-gdwarf-3", 3)
.Case("-gdwarf-4", 4)
.Case("-gdwarf-5", 5)
.Default(0);
}
static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
codegenoptions::DebugInfoKind DebugInfoKind,
unsigned DwarfVersion,
llvm::DebuggerKind DebuggerTuning) {
switch (DebugInfoKind) {
case codegenoptions::DebugLineTablesOnly:
CmdArgs.push_back("-debug-info-kind=line-tables-only");
break;
case codegenoptions::LimitedDebugInfo:
CmdArgs.push_back("-debug-info-kind=limited");
break;
case codegenoptions::FullDebugInfo:
CmdArgs.push_back("-debug-info-kind=standalone");
break;
default:
break;
}
if (DwarfVersion > 0)
CmdArgs.push_back(
Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
switch (DebuggerTuning) {
case llvm::DebuggerKind::GDB:
CmdArgs.push_back("-debugger-tuning=gdb");
break;
case llvm::DebuggerKind::LLDB:
CmdArgs.push_back("-debugger-tuning=lldb");
break;
case llvm::DebuggerKind::SCE:
CmdArgs.push_back("-debugger-tuning=sce");
break;
default:
break;
}
}
static void CollectArgsForIntegratedAssembler(Compilation &C,
const ArgList &Args,
ArgStringList &CmdArgs,
const Driver &D) {
if (UseRelaxAll(C, Args))
CmdArgs.push_back("-mrelax-all");
// Only default to -mincremental-linker-compatible if we think we are
// targeting the MSVC linker.
bool DefaultIncrementalLinkerCompatible =
C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment();
if (Args.hasFlag(options::OPT_mincremental_linker_compatible,
options::OPT_mno_incremental_linker_compatible,
DefaultIncrementalLinkerCompatible))
CmdArgs.push_back("-mincremental-linker-compatible");
switch (C.getDefaultToolChain().getArch()) {
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
if (Arg *A = Args.getLastArg(options::OPT_mimplicit_it_EQ)) {
StringRef Value = A->getValue();
if (Value == "always" || Value == "never" || Value == "arm" ||
Value == "thumb") {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-arm-implicit-it=" + Value));
} else {
D.Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Value;
}
}
break;
default:
break;
}
// When passing -I arguments to the assembler we sometimes need to
// unconditionally take the next argument. For example, when parsing
// '-Wa,-I -Wa,foo' we need to accept the -Wa,foo arg after seeing the
// -Wa,-I arg and when parsing '-Wa,-I,foo' we need to accept the 'foo'
// arg after parsing the '-I' arg.
bool TakeNextArg = false;
// When using an integrated assembler, translate -Wa, and -Xassembler
// options.
bool CompressDebugSections = false;
bool UseRelaxRelocations = ENABLE_X86_RELAX_RELOCATIONS;
const char *MipsTargetFeature = nullptr;
for (const Arg *A :
Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
A->claim();
for (StringRef Value : A->getValues()) {
if (TakeNextArg) {
CmdArgs.push_back(Value.data());
TakeNextArg = false;
continue;
}
switch (C.getDefaultToolChain().getArch()) {
default:
break;
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
if (Value == "--trap") {
CmdArgs.push_back("-target-feature");
CmdArgs.push_back("+use-tcc-in-div");
continue;
}
if (Value == "--break") {
CmdArgs.push_back("-target-feature");
CmdArgs.push_back("-use-tcc-in-div");
continue;
}
if (Value.startswith("-msoft-float")) {
CmdArgs.push_back("-target-feature");
CmdArgs.push_back("+soft-float");
continue;
}
if (Value.startswith("-mhard-float")) {
CmdArgs.push_back("-target-feature");
CmdArgs.push_back("-soft-float");
continue;
}
MipsTargetFeature = llvm::StringSwitch<const char *>(Value)
.Case("-mips1", "+mips1")
.Case("-mips2", "+mips2")
.Case("-mips3", "+mips3")
.Case("-mips4", "+mips4")
.Case("-mips5", "+mips5")
.Case("-mips32", "+mips32")
.Case("-mips32r2", "+mips32r2")
.Case("-mips32r3", "+mips32r3")
.Case("-mips32r5", "+mips32r5")
.Case("-mips32r6", "+mips32r6")
.Case("-mips64", "+mips64")
.Case("-mips64r2", "+mips64r2")
.Case("-mips64r3", "+mips64r3")
.Case("-mips64r5", "+mips64r5")
.Case("-mips64r6", "+mips64r6")
.Default(nullptr);
if (MipsTargetFeature)
continue;
}
if (Value == "-force_cpusubtype_ALL") {
// Do nothing, this is the default and we don't support anything else.
} else if (Value == "-L") {
CmdArgs.push_back("-msave-temp-labels");
} else if (Value == "--fatal-warnings") {
CmdArgs.push_back("-massembler-fatal-warnings");
} else if (Value == "--noexecstack") {
CmdArgs.push_back("-mnoexecstack");
} else if (Value == "-compress-debug-sections" ||
Value == "--compress-debug-sections") {
CompressDebugSections = true;
} else if (Value == "-nocompress-debug-sections" ||
Value == "--nocompress-debug-sections") {
CompressDebugSections = false;
} else if (Value == "-mrelax-relocations=yes" ||
Value == "--mrelax-relocations=yes") {
UseRelaxRelocations = true;
} else if (Value == "-mrelax-relocations=no" ||
Value == "--mrelax-relocations=no") {
UseRelaxRelocations = false;
} else if (Value.startswith("-I")) {
CmdArgs.push_back(Value.data());
// We need to consume the next argument if the current arg is a plain
// -I. The next arg will be the include directory.
if (Value == "-I")
TakeNextArg = true;
} else if (Value.startswith("-gdwarf-")) {
// "-gdwarf-N" options are not cc1as options.
unsigned DwarfVersion = DwarfVersionNum(Value);
if (DwarfVersion == 0) { // Send it onward, and let cc1as complain.
CmdArgs.push_back(Value.data());
} else {
RenderDebugEnablingArgs(Args, CmdArgs,
codegenoptions::LimitedDebugInfo,
DwarfVersion, llvm::DebuggerKind::Default);
}
} else if (Value.startswith("-mcpu") || Value.startswith("-mfpu") ||
Value.startswith("-mhwdiv") || Value.startswith("-march")) {
// Do nothing, we'll validate it later.
} else {
D.Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Value;
}
}
}
if (CompressDebugSections) {
if (llvm::zlib::isAvailable())
CmdArgs.push_back("-compress-debug-sections");
else
D.Diag(diag::warn_debug_compression_unavailable);
}
if (UseRelaxRelocations)
CmdArgs.push_back("--mrelax-relocations");
if (MipsTargetFeature != nullptr) {
CmdArgs.push_back("-target-feature");
CmdArgs.push_back(MipsTargetFeature);
}
}
// This adds the static libclang_rt.builtins-arch.a directly to the command line
// FIXME: Make sure we can also emit shared objects if they're requested
// and available, check for possible errors, etc.
static void addClangRT(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
}
namespace {
enum OpenMPRuntimeKind {
/// An unknown OpenMP runtime. We can't generate effective OpenMP code
/// without knowing what runtime to target.
OMPRT_Unknown,
/// The LLVM OpenMP runtime. When completed and integrated, this will become
/// the default for Clang.
OMPRT_OMP,
/// The GNU OpenMP runtime. Clang doesn't support generating OpenMP code for
/// this runtime but can swallow the pragmas, and find and link against the
/// runtime library itself.
OMPRT_GOMP,
/// The legacy name for the LLVM OpenMP runtime from when it was the Intel
/// OpenMP runtime. We support this mode for users with existing dependencies
/// on this runtime library name.
OMPRT_IOMP5
};
}
/// Compute the desired OpenMP runtime from the flag provided.
static OpenMPRuntimeKind getOpenMPRuntime(const ToolChain &TC,
const ArgList &Args) {
StringRef RuntimeName(CLANG_DEFAULT_OPENMP_RUNTIME);
const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ);
if (A)
RuntimeName = A->getValue();
auto RT = llvm::StringSwitch<OpenMPRuntimeKind>(RuntimeName)
.Case("libomp", OMPRT_OMP)
.Case("libgomp", OMPRT_GOMP)
.Case("libiomp5", OMPRT_IOMP5)
.Default(OMPRT_Unknown);
if (RT == OMPRT_Unknown) {
if (A)
TC.getDriver().Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << A->getValue();
else
// FIXME: We could use a nicer diagnostic here.
TC.getDriver().Diag(diag::err_drv_unsupported_opt) << "-fopenmp";
}
return RT;
}
static void addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
const ArgList &Args) {
if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
options::OPT_fno_openmp, false))
return;
switch (getOpenMPRuntime(TC, Args)) {
case OMPRT_OMP:
CmdArgs.push_back("-lomp");
break;
case OMPRT_GOMP:
CmdArgs.push_back("-lgomp");
break;
case OMPRT_IOMP5:
CmdArgs.push_back("-liomp5");
break;
case OMPRT_Unknown:
// Already diagnosed.
break;
}
}
static void addSanitizerRuntime(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs, StringRef Sanitizer,
bool IsShared, bool IsWhole) {
// Wrap any static runtimes that must be forced into executable in
// whole-archive.
if (IsWhole) CmdArgs.push_back("-whole-archive");
CmdArgs.push_back(TC.getCompilerRTArgString(Args, Sanitizer, IsShared));
if (IsWhole) CmdArgs.push_back("-no-whole-archive");
}
// Tries to use a file with the list of dynamic symbols that need to be exported
// from the runtime library. Returns true if the file was found.
static bool addSanitizerDynamicList(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs,
StringRef Sanitizer) {
SmallString<128> SanRT(TC.getCompilerRT(Args, Sanitizer));
if (llvm::sys::fs::exists(SanRT + ".syms")) {
CmdArgs.push_back(Args.MakeArgString("--dynamic-list=" + SanRT + ".syms"));
return true;
}
return false;
}
static void linkSanitizerRuntimeDeps(const ToolChain &TC,
ArgStringList &CmdArgs) {
// Force linking against the system libraries sanitizers depends on
// (see PR15823 why this is necessary).
CmdArgs.push_back("--no-as-needed");
// There's no libpthread or librt on RTEMS.
if (TC.getTriple().getOS() != llvm::Triple::RTEMS) {
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lrt");
}
CmdArgs.push_back("-lm");
// There's no libdl on FreeBSD or RTEMS.
if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
TC.getTriple().getOS() != llvm::Triple::RTEMS)
CmdArgs.push_back("-ldl");
}
static void
collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
SmallVectorImpl<StringRef> &SharedRuntimes,
SmallVectorImpl<StringRef> &StaticRuntimes,
SmallVectorImpl<StringRef> &NonWholeStaticRuntimes,
SmallVectorImpl<StringRef> &HelperStaticRuntimes,
SmallVectorImpl<StringRef> &RequiredSymbols) {
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
// Collect shared runtimes.
if (SanArgs.needsAsanRt() && SanArgs.needsSharedAsanRt()) {
SharedRuntimes.push_back("asan");
}
// The stats_client library is also statically linked into DSOs.
if (SanArgs.needsStatsRt())
StaticRuntimes.push_back("stats_client");
// Collect static runtimes.
if (Args.hasArg(options::OPT_shared) || TC.getTriple().isAndroid()) {
// Don't link static runtimes into DSOs or if compiling for Android.
return;
}
if (SanArgs.needsAsanRt()) {
if (SanArgs.needsSharedAsanRt()) {
HelperStaticRuntimes.push_back("asan-preinit");
} else {
StaticRuntimes.push_back("asan");
if (SanArgs.linkCXXRuntimes())
StaticRuntimes.push_back("asan_cxx");
}
}
if (SanArgs.needsDfsanRt())
StaticRuntimes.push_back("dfsan");
if (SanArgs.needsLsanRt())
StaticRuntimes.push_back("lsan");
if (SanArgs.needsMsanRt()) {
StaticRuntimes.push_back("msan");
if (SanArgs.linkCXXRuntimes())
StaticRuntimes.push_back("msan_cxx");
}
if (SanArgs.needsTsanRt()) {
StaticRuntimes.push_back("tsan");
if (SanArgs.linkCXXRuntimes())
StaticRuntimes.push_back("tsan_cxx");
}
if (SanArgs.needsUbsanRt()) {
StaticRuntimes.push_back("ubsan_standalone");
if (SanArgs.linkCXXRuntimes())
StaticRuntimes.push_back("ubsan_standalone_cxx");
}
if (SanArgs.needsSafeStackRt())
StaticRuntimes.push_back("safestack");
if (SanArgs.needsCfiRt())
StaticRuntimes.push_back("cfi");
if (SanArgs.needsCfiDiagRt()) {
StaticRuntimes.push_back("cfi_diag");
if (SanArgs.linkCXXRuntimes())
StaticRuntimes.push_back("ubsan_standalone_cxx");
}
if (SanArgs.needsStatsRt()) {
NonWholeStaticRuntimes.push_back("stats");
RequiredSymbols.push_back("__sanitizer_stats_register");
}
if (SanArgs.needsEsanRt())
StaticRuntimes.push_back("esan");
}
// Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
// C runtime, etc). Returns true if sanitizer system deps need to be linked in.
static bool addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
NonWholeStaticRuntimes, HelperStaticRuntimes,
RequiredSymbols);
for (auto RT : SharedRuntimes)
addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
for (auto RT : HelperStaticRuntimes)
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
bool AddExportDynamic = false;
for (auto RT : StaticRuntimes) {
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
}
for (auto RT : NonWholeStaticRuntimes) {
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
}
for (auto S : RequiredSymbols) {
CmdArgs.push_back("-u");
CmdArgs.push_back(Args.MakeArgString(S));
}
// If there is a static runtime with no dynamic list, force all the symbols
// to be dynamic to be sure we export sanitizer interface functions.
if (AddExportDynamic)
CmdArgs.push_back("-export-dynamic");
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
return !StaticRuntimes.empty();
}
static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
if (Args.hasFlag(options::OPT_fxray_instrument,
options::OPT_fnoxray_instrument, false)) {
CmdArgs.push_back("-whole-archive");
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
CmdArgs.push_back("-no-whole-archive");
return true;
}
return false;
}
static void linkXRayRuntimeDeps(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
CmdArgs.push_back("--no-as-needed");
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lrt");
CmdArgs.push_back("-lm");
CmdArgs.push_back("-latomic");
if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
CmdArgs.push_back("-lc++");
else
CmdArgs.push_back("-lstdc++");
if (TC.getTriple().getOS() != llvm::Triple::FreeBSD)
CmdArgs.push_back("-ldl");
}
static bool areOptimizationsEnabled(const ArgList &Args) {
// Find the last -O arg and see if it is non-zero.
if (Arg *A = Args.getLastArg(options::OPT_O_Group))
return !A->getOption().matches(options::OPT_O0);
// Defaults to -O0.
return false;
}
static bool mustUseFramePointerForTarget(const llvm::Triple &Triple) {
switch (Triple.getArch()){
default:
return false;
case llvm::Triple::arm:
case llvm::Triple::thumb:
// ARM Darwin targets require a frame pointer to be always present to aid
// offline debugging via backtraces.
return Triple.isOSDarwin();
}
}
static bool useFramePointerForTargetByDefault(const ArgList &Args,
const llvm::Triple &Triple) {
switch (Triple.getArch()) {
case llvm::Triple::xcore:
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
// XCore never wants frame pointers, regardless of OS.
// WebAssembly never wants frame pointers.
return false;
default:
break;
}
if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
switch (Triple.getArch()) {
// Don't use a frame pointer on linux if optimizing for certain targets.
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::systemz:
case llvm::Triple::x86:
case llvm::Triple::x86_64:
return !areOptimizationsEnabled(Args);
default:
return true;
}
}
if (Triple.isOSWindows()) {
switch (Triple.getArch()) {
case llvm::Triple::x86:
return !areOptimizationsEnabled(Args);
case llvm::Triple::x86_64:
return Triple.isOSBinFormatMachO();
case llvm::Triple::arm:
case llvm::Triple::thumb:
// Windows on ARM builds with FPO disabled to aid fast stack walking
return true;
default:
// All other supported Windows ISAs use xdata unwind information, so frame
// pointers are not generally useful.
return false;
}
}
return true;
}
static bool shouldUseFramePointer(const ArgList &Args,
const llvm::Triple &Triple) {
if (Arg *A = Args.getLastArg(options::OPT_fno_omit_frame_pointer,
options::OPT_fomit_frame_pointer))
return A->getOption().matches(options::OPT_fno_omit_frame_pointer) ||
mustUseFramePointerForTarget(Triple);
if (Args.hasArg(options::OPT_pg))
return true;
return useFramePointerForTargetByDefault(Args, Triple);
}
static bool shouldUseLeafFramePointer(const ArgList &Args,
const llvm::Triple &Triple) {
if (Arg *A = Args.getLastArg(options::OPT_mno_omit_leaf_frame_pointer,
options::OPT_momit_leaf_frame_pointer))
return A->getOption().matches(options::OPT_mno_omit_leaf_frame_pointer) ||
mustUseFramePointerForTarget(Triple);
if (Args.hasArg(options::OPT_pg))
return true;
if (Triple.isPS4CPU())
return false;
return useFramePointerForTargetByDefault(Args, Triple);
}
/// Add a CC1 option to specify the debug compilation directory.
static void addDebugCompDirArg(const ArgList &Args, ArgStringList &CmdArgs) {
SmallString<128> cwd;
if (!llvm::sys::fs::current_path(cwd)) {
CmdArgs.push_back("-fdebug-compilation-dir");
CmdArgs.push_back(Args.MakeArgString(cwd));
}
}
static const char *SplitDebugName(const ArgList &Args, const InputInfo &Input) {
Arg *FinalOutput = Args.getLastArg(options::OPT_o);
if (FinalOutput && Args.hasArg(options::OPT_c)) {
SmallString<128> T(FinalOutput->getValue());
llvm::sys::path::replace_extension(T, "dwo");
return Args.MakeArgString(T);
} else {
// Use the compilation dir.
SmallString<128> T(
Args.getLastArgValue(options::OPT_fdebug_compilation_dir));
SmallString<128> F(llvm::sys::path::stem(Input.getBaseInput()));
llvm::sys::path::replace_extension(F, "dwo");
T += F;
return Args.MakeArgString(F);
}
}
static void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T,
const JobAction &JA, const ArgList &Args,
const InputInfo &Output, const char *OutFile) {
ArgStringList ExtractArgs;
ExtractArgs.push_back("--extract-dwo");
ArgStringList StripArgs;
StripArgs.push_back("--strip-dwo");
// Grabbing the output of the earlier compile step.
StripArgs.push_back(Output.getFilename());
ExtractArgs.push_back(Output.getFilename());
ExtractArgs.push_back(OutFile);
const char *Exec = Args.MakeArgString(TC.GetProgramPath("objcopy"));
InputInfo II(types::TY_Object, Output.getFilename(), Output.getFilename());
// First extract the dwo sections.
C.addCommand(llvm::make_unique<Command>(JA, T, Exec, ExtractArgs, II));
// Then remove them from the original .o file.
C.addCommand(llvm::make_unique<Command>(JA, T, Exec, StripArgs, II));
}
/// \brief Vectorize at all optimization levels greater than 1 except for -Oz.
/// For -Oz the loop vectorizer is disable, while the slp vectorizer is enabled.
static bool shouldEnableVectorizerAtOLevel(const ArgList &Args, bool isSlpVec) {
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
if (A->getOption().matches(options::OPT_O4) ||
A->getOption().matches(options::OPT_Ofast))
return true;
if (A->getOption().matches(options::OPT_O0))
return false;
assert(A->getOption().matches(options::OPT_O) && "Must have a -O flag");
// Vectorize -Os.
StringRef S(A->getValue());
if (S == "s")
return true;
// Don't vectorize -Oz, unless it's the slp vectorizer.
if (S == "z")
return isSlpVec;
unsigned OptLevel = 0;
if (S.getAsInteger(10, OptLevel))
return false;
return OptLevel > 1;
}
return false;
}
/// Add -x lang to \p CmdArgs for \p Input.
static void addDashXForInput(const ArgList &Args, const InputInfo &Input,
ArgStringList &CmdArgs) {
// When using -verify-pch, we don't want to provide the type
// 'precompiled-header' if it was inferred from the file extension
if (Args.hasArg(options::OPT_verify_pch) && Input.getType() == types::TY_PCH)
return;
CmdArgs.push_back("-x");
if (Args.hasArg(options::OPT_rewrite_objc))
CmdArgs.push_back(types::getTypeName(types::TY_PP_ObjCXX));
else
CmdArgs.push_back(types::getTypeName(Input.getType()));
}
static VersionTuple getMSCompatibilityVersion(unsigned Version) {
if (Version < 100)
return VersionTuple(Version);
if (Version < 10000)
return VersionTuple(Version / 100, Version % 100);
unsigned Build = 0, Factor = 1;
for (; Version > 10000; Version = Version / 10, Factor = Factor * 10)
Build = Build + (Version % 10) * Factor;
return VersionTuple(Version / 100, Version % 100, Build);
}
// Claim options we don't want to warn if they are unused. We do this for
// options that build systems might add but are unused when assembling or only
// running the preprocessor for example.
static void claimNoWarnArgs(const ArgList &Args) {
// Don't warn about unused -f(no-)?lto. This can happen when we're
// preprocessing, precompiling or assembling.
Args.ClaimAllArgs(options::OPT_flto_EQ);
Args.ClaimAllArgs(options::OPT_flto);
Args.ClaimAllArgs(options::OPT_fno_lto);
}
static void appendUserToPath(SmallVectorImpl<char> &Result) {
#ifdef LLVM_ON_UNIX
const char *Username = getenv("LOGNAME");
#else
const char *Username = getenv("USERNAME");
#endif
if (Username) {
// Validate that LoginName can be used in a path, and get its length.
size_t Len = 0;
for (const char *P = Username; *P; ++P, ++Len) {
if (!isAlphanumeric(*P) && *P != '_') {
Username = nullptr;
break;
}
}
if (Username && Len > 0) {
Result.append(Username, Username + Len);
return;
}
}
// Fallback to user id.
#ifdef LLVM_ON_UNIX
std::string UID = llvm::utostr(getuid());
#else
// FIXME: Windows seems to have an 'SID' that might work.
std::string UID = "9999";
#endif
Result.append(UID.begin(), UID.end());
}
VersionTuple visualstudio::getMSVCVersion(const Driver *D, const ToolChain &TC,
const llvm::Triple &Triple,
const llvm::opt::ArgList &Args,
bool IsWindowsMSVC) {
if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
IsWindowsMSVC) ||
Args.hasArg(options::OPT_fmsc_version) ||
Args.hasArg(options::OPT_fms_compatibility_version)) {
const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version);
const Arg *MSCompatibilityVersion =
Args.getLastArg(options::OPT_fms_compatibility_version);
if (MSCVersion && MSCompatibilityVersion) {
if (D)
D->Diag(diag::err_drv_argument_not_allowed_with)
<< MSCVersion->getAsString(Args)
<< MSCompatibilityVersion->getAsString(Args);
return VersionTuple();
}
if (MSCompatibilityVersion) {
VersionTuple MSVT;
if (MSVT.tryParse(MSCompatibilityVersion->getValue()) && D)
D->Diag(diag::err_drv_invalid_value)
<< MSCompatibilityVersion->getAsString(Args)
<< MSCompatibilityVersion->getValue();
return MSVT;
}
if (MSCVersion) {
unsigned Version = 0;
if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version) && D)
D->Diag(diag::err_drv_invalid_value) << MSCVersion->getAsString(Args)
<< MSCVersion->getValue();
return getMSCompatibilityVersion(Version);
}
unsigned Major, Minor, Micro;
Triple.getEnvironmentVersion(Major, Minor, Micro);
if (Major || Minor || Micro)
return VersionTuple(Major, Minor, Micro);
if (IsWindowsMSVC) {
VersionTuple MSVT = TC.getMSVCVersionFromExe();
if (!MSVT.empty())
return MSVT;
// FIXME: Consider bumping this to 19 (MSVC2015) soon.
return VersionTuple(18);
}
}
return VersionTuple();
}
static void addPGOAndCoverageFlags(Compilation &C, const Driver &D,
const InputInfo &Output, const ArgList &Args,
ArgStringList &CmdArgs) {
auto *PGOGenerateArg = Args.getLastArg(options::OPT_fprofile_generate,
options::OPT_fprofile_generate_EQ,
options::OPT_fno_profile_generate);
if (PGOGenerateArg &&
PGOGenerateArg->getOption().matches(options::OPT_fno_profile_generate))
PGOGenerateArg = nullptr;
auto *ProfileGenerateArg = Args.getLastArg(
options::OPT_fprofile_instr_generate,
options::OPT_fprofile_instr_generate_EQ,
options::OPT_fno_profile_instr_generate);
if (ProfileGenerateArg &&
ProfileGenerateArg->getOption().matches(
options::OPT_fno_profile_instr_generate))
ProfileGenerateArg = nullptr;
if (PGOGenerateArg && ProfileGenerateArg)
D.Diag(diag::err_drv_argument_not_allowed_with)
<< PGOGenerateArg->getSpelling() << ProfileGenerateArg->getSpelling();
auto *ProfileUseArg = Args.getLastArg(
options::OPT_fprofile_instr_use, options::OPT_fprofile_instr_use_EQ,
options::OPT_fprofile_use, options::OPT_fprofile_use_EQ,
options::OPT_fno_profile_instr_use);
if (ProfileUseArg &&
ProfileUseArg->getOption().matches(options::OPT_fno_profile_instr_use))
ProfileUseArg = nullptr;
if (PGOGenerateArg && ProfileUseArg)
D.Diag(diag::err_drv_argument_not_allowed_with)
<< ProfileUseArg->getSpelling() << PGOGenerateArg->getSpelling();
if (ProfileGenerateArg && ProfileUseArg)
D.Diag(diag::err_drv_argument_not_allowed_with)
<< ProfileGenerateArg->getSpelling() << ProfileUseArg->getSpelling();
if (ProfileGenerateArg) {
if (ProfileGenerateArg->getOption().matches(
options::OPT_fprofile_instr_generate_EQ))
CmdArgs.push_back(Args.MakeArgString(Twine("-fprofile-instrument-path=") +
ProfileGenerateArg->getValue()));
// The default is to use Clang Instrumentation.
CmdArgs.push_back("-fprofile-instrument=clang");
}
if (PGOGenerateArg) {
CmdArgs.push_back("-fprofile-instrument=llvm");
if (PGOGenerateArg->getOption().matches(
options::OPT_fprofile_generate_EQ)) {
SmallString<128> Path(PGOGenerateArg->getValue());
llvm::sys::path::append(Path, "default_%m.profraw");
CmdArgs.push_back(
Args.MakeArgString(Twine("-fprofile-instrument-path=") + Path));
}
}
if (ProfileUseArg) {
if (ProfileUseArg->getOption().matches(options::OPT_fprofile_instr_use_EQ))
CmdArgs.push_back(Args.MakeArgString(
Twine("-fprofile-instrument-use-path=") + ProfileUseArg->getValue()));
else if ((ProfileUseArg->getOption().matches(
options::OPT_fprofile_use_EQ) ||
ProfileUseArg->getOption().matches(
options::OPT_fprofile_instr_use))) {
SmallString<128> Path(
ProfileUseArg->getNumValues() == 0 ? "" : ProfileUseArg->getValue());
if (Path.empty() || llvm::sys::fs::is_directory(Path))
llvm::sys::path::append(Path, "default.profdata");
CmdArgs.push_back(
Args.MakeArgString(Twine("-fprofile-instrument-use-path=") + Path));
}
}
if (Args.hasArg(options::OPT_ftest_coverage) ||
Args.hasArg(options::OPT_coverage))
CmdArgs.push_back("-femit-coverage-notes");
if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
false) ||
Args.hasArg(options::OPT_coverage))
CmdArgs.push_back("-femit-coverage-data");
if (Args.hasFlag(options::OPT_fcoverage_mapping,
options::OPT_fno_coverage_mapping, false) &&
!ProfileGenerateArg)
D.Diag(diag::err_drv_argument_only_allowed_with)
<< "-fcoverage-mapping"
<< "-fprofile-instr-generate";
if (Args.hasFlag(options::OPT_fcoverage_mapping,
options::OPT_fno_coverage_mapping, false))
CmdArgs.push_back("-fcoverage-mapping");
if (C.getArgs().hasArg(options::OPT_c) ||
C.getArgs().hasArg(options::OPT_S)) {
if (Output.isFilename()) {
CmdArgs.push_back("-coverage-notes-file");
SmallString<128> OutputFilename;
if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
OutputFilename = FinalOutput->getValue();
else
OutputFilename = llvm::sys::path::filename(Output.getBaseInput());
SmallString<128> CoverageFilename = OutputFilename;
if (llvm::sys::path::is_relative(CoverageFilename)) {
SmallString<128> Pwd;
if (!llvm::sys::fs::current_path(Pwd)) {
llvm::sys::path::append(Pwd, CoverageFilename);
CoverageFilename.swap(Pwd);
}
}
llvm::sys::path::replace_extension(CoverageFilename, "gcno");
CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
// Leave -fprofile-dir= an unused argument unless .gcda emission is
// enabled. To be polite, with '-fprofile-arcs -fno-profile-arcs' consider
// the flag used. There is no -fno-profile-dir, so the user has no
// targeted way to suppress the warning.
if (Args.hasArg(options::OPT_fprofile_arcs) ||
Args.hasArg(options::OPT_coverage)) {
CmdArgs.push_back("-coverage-data-file");
if (Arg *FProfileDir = Args.getLastArg(options::OPT_fprofile_dir)) {
CoverageFilename = FProfileDir->getValue();
llvm::sys::path::append(CoverageFilename, OutputFilename);
}
llvm::sys::path::replace_extension(CoverageFilename, "gcda");
CmdArgs.push_back(Args.MakeArgString(CoverageFilename));
}
}
}
}
static void addPS4ProfileRTArgs(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
if ((Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
false) ||
Args.hasFlag(options::OPT_fprofile_generate,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasFlag(options::OPT_fprofile_generate_EQ,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasFlag(options::OPT_fprofile_instr_generate,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasFlag(options::OPT_fprofile_instr_generate_EQ,
options::OPT_fno_profile_instr_generate, false) ||
Args.hasArg(options::OPT_fcreate_profile) ||
Args.hasArg(options::OPT_coverage)))
CmdArgs.push_back("--dependent-lib=libclang_rt.profile-x86_64.a");
}
/// Parses the various -fpic/-fPIC/-fpie/-fPIE arguments. Then,
/// smooshes them together with platform defaults, to decide whether
/// this compile should be using PIC mode or not. Returns a tuple of
/// (RelocationModel, PICLevel, IsPIE).
static std::tuple<llvm::Reloc::Model, unsigned, bool>
ParsePICArgs(const ToolChain &ToolChain, const llvm::Triple &Triple,
const ArgList &Args) {
// FIXME: why does this code...and so much everywhere else, use both
// ToolChain.getTriple() and Triple?
bool PIE = ToolChain.isPIEDefault();
bool PIC = PIE || ToolChain.isPICDefault();
// The Darwin/MachO default to use PIC does not apply when using -static.
if (ToolChain.getTriple().isOSBinFormatMachO() &&
Args.hasArg(options::OPT_static))
PIE = PIC = false;
bool IsPICLevelTwo = PIC;
bool KernelOrKext =
Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
// Android-specific defaults for PIC/PIE
if (ToolChain.getTriple().isAndroid()) {
switch (ToolChain.getArch()) {
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
case llvm::Triple::aarch64:
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
PIC = true; // "-fpic"
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
PIC = true; // "-fPIC"
IsPICLevelTwo = true;
break;
default:
break;
}
}
// OpenBSD-specific defaults for PIE
if (ToolChain.getTriple().getOS() == llvm::Triple::OpenBSD) {
switch (ToolChain.getArch()) {
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
case llvm::Triple::sparcel:
case llvm::Triple::x86:
case llvm::Triple::x86_64:
IsPICLevelTwo = false; // "-fpie"
break;
case llvm::Triple::ppc:
case llvm::Triple::sparc:
case llvm::Triple::sparcv9:
IsPICLevelTwo = true; // "-fPIE"
break;
default:
break;
}
}
// The last argument relating to either PIC or PIE wins, and no
// other argument is used. If the last argument is any flavor of the
// '-fno-...' arguments, both PIC and PIE are disabled. Any PIE
// option implicitly enables PIC at the same level.
Arg *LastPICArg = Args.getLastArg(options::OPT_fPIC, options::OPT_fno_PIC,
options::OPT_fpic, options::OPT_fno_pic,
options::OPT_fPIE, options::OPT_fno_PIE,
options::OPT_fpie, options::OPT_fno_pie);
// Check whether the tool chain trumps the PIC-ness decision. If the PIC-ness
// is forced, then neither PIC nor PIE flags will have no effect.
if (!ToolChain.isPICDefaultForced()) {
if (LastPICArg) {
Option O = LastPICArg->getOption();
if (O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic) ||
O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie)) {
PIE = O.matches(options::OPT_fPIE) || O.matches(options::OPT_fpie);
PIC =
PIE || O.matches(options::OPT_fPIC) || O.matches(options::OPT_fpic);
IsPICLevelTwo =
O.matches(options::OPT_fPIE) || O.matches(options::OPT_fPIC);
} else {
PIE = PIC = false;
if (Triple.isPS4CPU()) {
Arg *ModelArg = Args.getLastArg(options::OPT_mcmodel_EQ);
StringRef Model = ModelArg ? ModelArg->getValue() : "";
if (Model != "kernel") {
PIC = true;
ToolChain.getDriver().Diag(diag::warn_drv_ps4_force_pic)
<< LastPICArg->getSpelling();
}
}
}
}
}
// Introduce a Darwin and PS4-specific hack. If the default is PIC, but the
// PIC level would've been set to level 1, force it back to level 2 PIC
// instead.
if (PIC && (ToolChain.getTriple().isOSDarwin() || Triple.isPS4CPU()))
IsPICLevelTwo |= ToolChain.isPICDefault();
// This kernel flags are a trump-card: they will disable PIC/PIE
// generation, independent of the argument order.
if (KernelOrKext && ((!Triple.isiOS() || Triple.isOSVersionLT(6)) &&
!Triple.isWatchOS()))
PIC = PIE = false;
if (Arg *A = Args.getLastArg(options::OPT_mdynamic_no_pic)) {
// This is a very special mode. It trumps the other modes, almost no one
// uses it, and it isn't even valid on any OS but Darwin.
if (!ToolChain.getTriple().isOSDarwin())
ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
<< A->getSpelling() << ToolChain.getTriple().str();
// FIXME: Warn when this flag trumps some other PIC or PIE flag.
// Only a forced PIC mode can cause the actual compile to have PIC defines
// etc., no flags are sufficient. This behavior was selected to closely
// match that of llvm-gcc and Apple GCC before that.
PIC = ToolChain.isPICDefault() && ToolChain.isPICDefaultForced();
return std::make_tuple(llvm::Reloc::DynamicNoPIC, PIC ? 2U : 0U, false);
}
bool EmbeddedPISupported;
switch (ToolChain.getArch()) {
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
EmbeddedPISupported = true;
break;
default:
EmbeddedPISupported = false;
break;
}
bool ROPI = false, RWPI = false;
Arg* LastROPIArg = Args.getLastArg(options::OPT_fropi, options::OPT_fno_ropi);
if (LastROPIArg && LastROPIArg->getOption().matches(options::OPT_fropi)) {
if (!EmbeddedPISupported)
ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
<< LastROPIArg->getSpelling() << ToolChain.getTriple().str();
ROPI = true;
}
Arg *LastRWPIArg = Args.getLastArg(options::OPT_frwpi, options::OPT_fno_rwpi);
if (LastRWPIArg && LastRWPIArg->getOption().matches(options::OPT_frwpi)) {
if (!EmbeddedPISupported)
ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
<< LastRWPIArg->getSpelling() << ToolChain.getTriple().str();
RWPI = true;
}
// ROPI and RWPI are not comaptible with PIC or PIE.
if ((ROPI || RWPI) && (PIC || PIE)) {
ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
}
if (PIC)
return std::make_tuple(llvm::Reloc::PIC_, IsPICLevelTwo ? 2U : 1U, PIE);
llvm::Reloc::Model RelocM = llvm::Reloc::Static;
if (ROPI && RWPI)
RelocM = llvm::Reloc::ROPI_RWPI;
else if (ROPI)
RelocM = llvm::Reloc::ROPI;
else if (RWPI)
RelocM = llvm::Reloc::RWPI;
return std::make_tuple(RelocM, 0U, false);
}
static const char *RelocationModelName(llvm::Reloc::Model Model) {
switch (Model) {
case llvm::Reloc::Static:
return "static";
case llvm::Reloc::PIC_:
return "pic";
case llvm::Reloc::DynamicNoPIC:
return "dynamic-no-pic";
case llvm::Reloc::ROPI:
return "ropi";
case llvm::Reloc::RWPI:
return "rwpi";
case llvm::Reloc::ROPI_RWPI:
return "ropi-rwpi";
}
llvm_unreachable("Unknown Reloc::Model kind");
}
static void AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
ArgStringList &CmdArgs) {
llvm::Reloc::Model RelocationModel;
unsigned PICLevel;
bool IsPIE;
std::tie(RelocationModel, PICLevel, IsPIE) =
ParsePICArgs(ToolChain, ToolChain.getTriple(), Args);
if (RelocationModel != llvm::Reloc::Static)
CmdArgs.push_back("-KPIC");
}
void Clang::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const ArgList &Args, const char *LinkingOutput) const {
const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
const std::string &TripleStr = Triple.getTriple();
bool KernelOrKext =
Args.hasArg(options::OPT_mkernel, options::OPT_fapple_kext);
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
bool IsWindowsGNU = getToolChain().getTriple().isWindowsGNUEnvironment();
bool IsWindowsCygnus =
getToolChain().getTriple().isWindowsCygwinEnvironment();
bool IsWindowsMSVC = getToolChain().getTriple().isWindowsMSVCEnvironment();
bool IsPS4CPU = getToolChain().getTriple().isPS4CPU();
bool IsIAMCU = getToolChain().getTriple().isOSIAMCU();
// Check number of inputs for sanity. We need at least one input.
assert(Inputs.size() >= 1 && "Must have at least one input.");
const InputInfo &Input = Inputs[0];
// CUDA compilation may have multiple inputs (source file + results of
// device-side compilations). All other jobs are expected to have exactly one
// input.
bool IsCuda = JA.isOffloading(Action::OFK_Cuda);
assert((IsCuda || Inputs.size() == 1) && "Unable to handle multiple inputs.");
// C++ is not supported for IAMCU.
if (IsIAMCU && types::isCXX(Input.getType()))
D.Diag(diag::err_drv_clang_unsupported) << "C++ for IAMCU";
// Invoke ourselves in -cc1 mode.
//
// FIXME: Implement custom jobs for internal actions.
CmdArgs.push_back("-cc1");
// Add the "effective" target triple.
CmdArgs.push_back("-triple");
CmdArgs.push_back(Args.MakeArgString(TripleStr));
if (IsCuda) {
// We have to pass the triple of the host if compiling for a CUDA device and
// vice-versa.
std::string NormalizedTriple;
if (JA.isDeviceOffloading(Action::OFK_Cuda))
NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Host>()
->getTriple()
.normalize();
else
NormalizedTriple = C.getSingleOffloadToolChain<Action::OFK_Cuda>()
->getTriple()
.normalize();
CmdArgs.push_back("-aux-triple");
CmdArgs.push_back(Args.MakeArgString(NormalizedTriple));
}
if (Triple.isOSWindows() && (Triple.getArch() == llvm::Triple::arm ||
Triple.getArch() == llvm::Triple::thumb)) {
unsigned Offset = Triple.getArch() == llvm::Triple::arm ? 4 : 6;
unsigned Version;
Triple.getArchName().substr(Offset).getAsInteger(10, Version);
if (Version < 7)
D.Diag(diag::err_target_unsupported_arch) << Triple.getArchName()
<< TripleStr;
}
// Push all default warning arguments that are specific to
// the given target. These come before user provided warning options
// are provided.
getToolChain().addClangWarningOptions(CmdArgs);
// Select the appropriate action.
RewriteKind rewriteKind = RK_None;
if (isa<AnalyzeJobAction>(JA)) {
assert(JA.getType() == types::TY_Plist && "Invalid output type.");
CmdArgs.push_back("-analyze");
} else if (isa<MigrateJobAction>(JA)) {
CmdArgs.push_back("-migrate");
} else if (isa<PreprocessJobAction>(JA)) {
if (Output.getType() == types::TY_Dependencies)
CmdArgs.push_back("-Eonly");
else {
CmdArgs.push_back("-E");
if (Args.hasArg(options::OPT_rewrite_objc) &&
!Args.hasArg(options::OPT_g_Group))
CmdArgs.push_back("-P");
}
} else if (isa<AssembleJobAction>(JA)) {
CmdArgs.push_back("-emit-obj");
CollectArgsForIntegratedAssembler(C, Args, CmdArgs, D);
// Also ignore explicit -force_cpusubtype_ALL option.
(void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
} else if (isa<PrecompileJobAction>(JA)) {
// Use PCH if the user requested it.
bool UsePCH = D.CCCUsePCH;
if (JA.getType() == types::TY_Nothing)
CmdArgs.push_back("-fsyntax-only");
else if (JA.getType() == types::TY_ModuleFile)
CmdArgs.push_back("-emit-module-interface");
else if (UsePCH)
CmdArgs.push_back("-emit-pch");
else
CmdArgs.push_back("-emit-pth");
} else if (isa<VerifyPCHJobAction>(JA)) {
CmdArgs.push_back("-verify-pch");
} else {
assert((isa<CompileJobAction>(JA) || isa<BackendJobAction>(JA)) &&
"Invalid action for clang tool.");
if (JA.getType() == types::TY_Nothing) {
CmdArgs.push_back("-fsyntax-only");
} else if (JA.getType() == types::TY_LLVM_IR ||
JA.getType() == types::TY_LTO_IR) {
CmdArgs.push_back("-emit-llvm");
} else if (JA.getType() == types::TY_LLVM_BC ||
JA.getType() == types::TY_LTO_BC) {
CmdArgs.push_back("-emit-llvm-bc");
} else if (JA.getType() == types::TY_PP_Asm) {
CmdArgs.push_back("-S");
} else if (JA.getType() == types::TY_AST) {
CmdArgs.push_back("-emit-pch");
} else if (JA.getType() == types::TY_ModuleFile) {
CmdArgs.push_back("-module-file-info");
} else if (JA.getType() == types::TY_RewrittenObjC) {
CmdArgs.push_back("-rewrite-objc");
rewriteKind = RK_NonFragile;
} else if (JA.getType() == types::TY_RewrittenLegacyObjC) {
CmdArgs.push_back("-rewrite-objc");
rewriteKind = RK_Fragile;
} else {
assert(JA.getType() == types::TY_PP_Asm && "Unexpected output type!");
}
// Preserve use-list order by default when emitting bitcode, so that
// loading the bitcode up in 'opt' or 'llc' and running passes gives the
// same result as running passes here. For LTO, we don't need to preserve
// the use-list order, since serialization to bitcode is part of the flow.
if (JA.getType() == types::TY_LLVM_BC)
CmdArgs.push_back("-emit-llvm-uselists");
if (D.isUsingLTO())
Args.AddLastArg(CmdArgs, options::OPT_flto, options::OPT_flto_EQ);
}
if (const Arg *A = Args.getLastArg(options::OPT_fthinlto_index_EQ)) {
if (!types::isLLVMIR(Input.getType()))
D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
<< "-x ir";
Args.AddLastArg(CmdArgs, options::OPT_fthinlto_index_EQ);
}
// Embed-bitcode option.
if (C.getDriver().embedBitcodeEnabled() &&
(isa<BackendJobAction>(JA) || isa<AssembleJobAction>(JA))) {
// Add flags implied by -fembed-bitcode.
Args.AddLastArg(CmdArgs, options::OPT_fembed_bitcode_EQ);
// Disable all llvm IR level optimizations.
CmdArgs.push_back("-disable-llvm-optzns");
}
if (C.getDriver().embedBitcodeMarkerOnly())
CmdArgs.push_back("-fembed-bitcode=marker");
// We normally speed up the clang process a bit by skipping destructors at
// exit, but when we're generating diagnostics we can rely on some of the
// cleanup.
if (!C.isForDiagnostics())
CmdArgs.push_back("-disable-free");
// Disable the verification pass in -asserts builds.
#ifdef NDEBUG
CmdArgs.push_back("-disable-llvm-verifier");
// Discard LLVM value names in -asserts builds.
CmdArgs.push_back("-discard-value-names");
#endif
// Set the main file name, so that debug info works even with
// -save-temps.
CmdArgs.push_back("-main-file-name");
CmdArgs.push_back(getBaseInputName(Args, Input));
// Some flags which affect the language (via preprocessor
// defines).
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-static-define");
if (isa<AnalyzeJobAction>(JA)) {
// Enable region store model by default.
CmdArgs.push_back("-analyzer-store=region");
// Treat blocks as analysis entry points.
CmdArgs.push_back("-analyzer-opt-analyze-nested-blocks");
CmdArgs.push_back("-analyzer-eagerly-assume");
// Add default argument set.
if (!Args.hasArg(options::OPT__analyzer_no_default_checks)) {
CmdArgs.push_back("-analyzer-checker=core");
if (!IsWindowsMSVC) {
CmdArgs.push_back("-analyzer-checker=unix");
} else {
// Enable "unix" checkers that also work on Windows.
CmdArgs.push_back("-analyzer-checker=unix.API");
CmdArgs.push_back("-analyzer-checker=unix.Malloc");
CmdArgs.push_back("-analyzer-checker=unix.MallocSizeof");
CmdArgs.push_back("-analyzer-checker=unix.MismatchedDeallocator");
CmdArgs.push_back("-analyzer-checker=unix.cstring.BadSizeArg");
CmdArgs.push_back("-analyzer-checker=unix.cstring.NullArg");
}
// Disable some unix checkers for PS4.
if (IsPS4CPU) {
CmdArgs.push_back("-analyzer-disable-checker=unix.API");
CmdArgs.push_back("-analyzer-disable-checker=unix.Vfork");
}
if (getToolChain().getTriple().getVendor() == llvm::Triple::Apple)
CmdArgs.push_back("-analyzer-checker=osx");
CmdArgs.push_back("-analyzer-checker=deadcode");
if (types::isCXX(Input.getType()))
CmdArgs.push_back("-analyzer-checker=cplusplus");
if (!IsPS4CPU) {
CmdArgs.push_back(
"-analyzer-checker=security.insecureAPI.UncheckedReturn");
CmdArgs.push_back("-analyzer-checker=security.insecureAPI.getpw");
CmdArgs.push_back("-analyzer-checker=security.insecureAPI.gets");
CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mktemp");
CmdArgs.push_back("-analyzer-checker=security.insecureAPI.mkstemp");
CmdArgs.push_back("-analyzer-checker=security.insecureAPI.vfork");
}
// Default nullability checks.
CmdArgs.push_back("-analyzer-checker=nullability.NullPassedToNonnull");
CmdArgs.push_back(
"-analyzer-checker=nullability.NullReturnedFromNonnull");
}
// Set the output format. The default is plist, for (lame) historical
// reasons.
CmdArgs.push_back("-analyzer-output");
if (Arg *A = Args.getLastArg(options::OPT__analyzer_output))
CmdArgs.push_back(A->getValue());
else
CmdArgs.push_back("plist");
// Disable the presentation of standard compiler warnings when
// using --analyze. We only want to show static analyzer diagnostics
// or frontend errors.
CmdArgs.push_back("-w");
// Add -Xanalyzer arguments when running as analyzer.
Args.AddAllArgValues(CmdArgs, options::OPT_Xanalyzer);
}
CheckCodeGenerationOptions(D, Args);
llvm::Reloc::Model RelocationModel;
unsigned PICLevel;
bool IsPIE;
std::tie(RelocationModel, PICLevel, IsPIE) =
ParsePICArgs(getToolChain(), Triple, Args);
const char *RMName = RelocationModelName(RelocationModel);
if ((RelocationModel == llvm::Reloc::ROPI ||
RelocationModel == llvm::Reloc::ROPI_RWPI) &&
types::isCXX(Input.getType()) &&
!Args.hasArg(options::OPT_fallow_unsupported))
D.Diag(diag::err_drv_ropi_incompatible_with_cxx);
if (RMName) {
CmdArgs.push_back("-mrelocation-model");
CmdArgs.push_back(RMName);
}
if (PICLevel > 0) {
CmdArgs.push_back("-pic-level");
CmdArgs.push_back(PICLevel == 1 ? "1" : "2");
if (IsPIE)
CmdArgs.push_back("-pic-is-pie");
}
if (Arg *A = Args.getLastArg(options::OPT_meabi)) {
CmdArgs.push_back("-meabi");
CmdArgs.push_back(A->getValue());
}
CmdArgs.push_back("-mthread-model");
if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
CmdArgs.push_back(A->getValue());
else
CmdArgs.push_back(Args.MakeArgString(getToolChain().getThreadModel()));
Args.AddLastArg(CmdArgs, options::OPT_fveclib);
if (!Args.hasFlag(options::OPT_fmerge_all_constants,
options::OPT_fno_merge_all_constants))
CmdArgs.push_back("-fno-merge-all-constants");
// LLVM Code Generator Options.
if (Args.hasArg(options::OPT_frewrite_map_file) ||
Args.hasArg(options::OPT_frewrite_map_file_EQ)) {
for (const Arg *A : Args.filtered(options::OPT_frewrite_map_file,
options::OPT_frewrite_map_file_EQ)) {
StringRef Map = A->getValue();
if (!llvm::sys::fs::exists(Map)) {
D.Diag(diag::err_drv_no_such_file) << Map;
} else {
CmdArgs.push_back("-frewrite-map-file");
CmdArgs.push_back(A->getValue());
A->claim();
}
}
}
if (Arg *A = Args.getLastArg(options::OPT_Wframe_larger_than_EQ)) {
StringRef v = A->getValue();
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-warn-stack-size=" + v));
A->claim();
}
if (!Args.hasFlag(options::OPT_fjump_tables, options::OPT_fno_jump_tables,
true))
CmdArgs.push_back("-fno-jump-tables");
if (!Args.hasFlag(options::OPT_fpreserve_as_comments,
options::OPT_fno_preserve_as_comments, true))
CmdArgs.push_back("-fno-preserve-as-comments");
if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
CmdArgs.push_back("-mregparm");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fpcc_struct_return,
options::OPT_freg_struct_return)) {
if (getToolChain().getArch() != llvm::Triple::x86) {
D.Diag(diag::err_drv_unsupported_opt_for_target)
<< A->getSpelling() << getToolChain().getTriple().str();
} else if (A->getOption().matches(options::OPT_fpcc_struct_return)) {
CmdArgs.push_back("-fpcc-struct-return");
} else {
assert(A->getOption().matches(options::OPT_freg_struct_return));
CmdArgs.push_back("-freg-struct-return");
}
}
if (Args.hasFlag(options::OPT_mrtd, options::OPT_mno_rtd, false))
CmdArgs.push_back("-fdefault-calling-conv=stdcall");
if (shouldUseFramePointer(Args, getToolChain().getTriple()))
CmdArgs.push_back("-mdisable-fp-elim");
if (!Args.hasFlag(options::OPT_fzero_initialized_in_bss,
options::OPT_fno_zero_initialized_in_bss))
CmdArgs.push_back("-mno-zero-initialized-in-bss");
bool OFastEnabled = isOptimizationLevelFast(Args);
// If -Ofast is the optimization level, then -fstrict-aliasing should be
// enabled. This alias option is being used to simplify the hasFlag logic.
OptSpecifier StrictAliasingAliasOption =
OFastEnabled ? options::OPT_Ofast : options::OPT_fstrict_aliasing;
// We turn strict aliasing off by default if we're in CL mode, since MSVC
// doesn't do any TBAA.
bool TBAAOnByDefault = !getToolChain().getDriver().IsCLMode();
if (!Args.hasFlag(options::OPT_fstrict_aliasing, StrictAliasingAliasOption,
options::OPT_fno_strict_aliasing, TBAAOnByDefault))
CmdArgs.push_back("-relaxed-aliasing");
if (!Args.hasFlag(options::OPT_fstruct_path_tbaa,
options::OPT_fno_struct_path_tbaa))
CmdArgs.push_back("-no-struct-path-tbaa");
if (Args.hasFlag(options::OPT_fstrict_enums, options::OPT_fno_strict_enums,
false))
CmdArgs.push_back("-fstrict-enums");
if (Args.hasFlag(options::OPT_fstrict_vtable_pointers,
options::OPT_fno_strict_vtable_pointers,
false))
CmdArgs.push_back("-fstrict-vtable-pointers");
if (!Args.hasFlag(options::OPT_foptimize_sibling_calls,
options::OPT_fno_optimize_sibling_calls))
CmdArgs.push_back("-mdisable-tail-calls");
// Handle segmented stacks.
if (Args.hasArg(options::OPT_fsplit_stack))
CmdArgs.push_back("-split-stacks");
// If -Ofast is the optimization level, then -ffast-math should be enabled.
// This alias option is being used to simplify the getLastArg logic.
OptSpecifier FastMathAliasOption =
OFastEnabled ? options::OPT_Ofast : options::OPT_ffast_math;
// Handle various floating point optimization flags, mapping them to the
// appropriate LLVM code generation flags. The pattern for all of these is to
// default off the codegen optimizations, and if any flag enables them and no
// flag disables them after the flag enabling them, enable the codegen
// optimization. This is complicated by several "umbrella" flags.
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_ffinite_math_only,
options::OPT_fno_finite_math_only, options::OPT_fhonor_infinities,
options::OPT_fno_honor_infinities))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_finite_math_only &&
A->getOption().getID() != options::OPT_fhonor_infinities)
CmdArgs.push_back("-menable-no-infs");
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_ffinite_math_only,
options::OPT_fno_finite_math_only, options::OPT_fhonor_nans,
options::OPT_fno_honor_nans))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_finite_math_only &&
A->getOption().getID() != options::OPT_fhonor_nans)
CmdArgs.push_back("-menable-no-nans");
// -fmath-errno is the default on some platforms, e.g. BSD-derived OSes.
bool MathErrno = getToolChain().IsMathErrnoDefault();
if (Arg *A =
Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_fmath_errno,
options::OPT_fno_math_errno)) {
// Turning on -ffast_math (with either flag) removes the need for MathErrno.
// However, turning *off* -ffast_math merely restores the toolchain default
// (which may be false).
if (A->getOption().getID() == options::OPT_fno_math_errno ||
A->getOption().getID() == options::OPT_ffast_math ||
A->getOption().getID() == options::OPT_Ofast)
MathErrno = false;
else if (A->getOption().getID() == options::OPT_fmath_errno)
MathErrno = true;
}
if (MathErrno)
CmdArgs.push_back("-fmath-errno");
// There are several flags which require disabling very specific
// optimizations. Any of these being disabled forces us to turn off the
// entire set of LLVM optimizations, so collect them through all the flag
// madness.
bool AssociativeMath = false;
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations,
options::OPT_fassociative_math, options::OPT_fno_associative_math))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations &&
A->getOption().getID() != options::OPT_fno_associative_math)
AssociativeMath = true;
bool ReciprocalMath = false;
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations,
options::OPT_freciprocal_math, options::OPT_fno_reciprocal_math))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations &&
A->getOption().getID() != options::OPT_fno_reciprocal_math)
ReciprocalMath = true;
bool SignedZeros = true;
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations,
options::OPT_fsigned_zeros, options::OPT_fno_signed_zeros))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations &&
A->getOption().getID() != options::OPT_fsigned_zeros)
SignedZeros = false;
bool TrappingMath = true;
if (Arg *A = Args.getLastArg(
options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math, options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations,
options::OPT_ftrapping_math, options::OPT_fno_trapping_math))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations &&
A->getOption().getID() != options::OPT_ftrapping_math)
TrappingMath = false;
if (!MathErrno && AssociativeMath && ReciprocalMath && !SignedZeros &&
!TrappingMath)
CmdArgs.push_back("-menable-unsafe-fp-math");
if (!SignedZeros)
CmdArgs.push_back("-fno-signed-zeros");
if (ReciprocalMath)
CmdArgs.push_back("-freciprocal-math");
if (!TrappingMath)
CmdArgs.push_back("-fno-trapping-math");
if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math,
options::OPT_funsafe_math_optimizations,
options::OPT_fno_unsafe_math_optimizations,
options::OPT_fdenormal_fp_math_EQ))
if (A->getOption().getID() != options::OPT_fno_fast_math &&
A->getOption().getID() != options::OPT_fno_unsafe_math_optimizations)
Args.AddLastArg(CmdArgs, options::OPT_fdenormal_fp_math_EQ);
// Validate and pass through -fp-contract option.
if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math,
options::OPT_ffp_contract)) {
if (A->getOption().getID() == options::OPT_ffp_contract) {
StringRef Val = A->getValue();
if (Val == "fast" || Val == "on" || Val == "off") {
CmdArgs.push_back(Args.MakeArgString("-ffp-contract=" + Val));
} else {
D.Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Val;
}
} else if (A->getOption().matches(options::OPT_ffast_math) ||
(OFastEnabled && A->getOption().matches(options::OPT_Ofast))) {
// If fast-math is set then set the fp-contract mode to fast.
CmdArgs.push_back(Args.MakeArgString("-ffp-contract=fast"));
}
}
ParseMRecip(getToolChain().getDriver(), Args, CmdArgs);
// We separately look for the '-ffast-math' and '-ffinite-math-only' flags,
// and if we find them, tell the frontend to provide the appropriate
// preprocessor macros. This is distinct from enabling any optimizations as
// these options induce language changes which must survive serialization
// and deserialization, etc.
if (Arg *A = Args.getLastArg(options::OPT_ffast_math, FastMathAliasOption,
options::OPT_fno_fast_math))
if (!A->getOption().matches(options::OPT_fno_fast_math))
CmdArgs.push_back("-ffast-math");
if (Arg *A = Args.getLastArg(options::OPT_ffinite_math_only,
options::OPT_fno_fast_math))
if (A->getOption().matches(options::OPT_ffinite_math_only))
CmdArgs.push_back("-ffinite-math-only");
// Decide whether to use verbose asm. Verbose assembly is the default on
// toolchains which have the integrated assembler on by default.
bool IsIntegratedAssemblerDefault =
getToolChain().IsIntegratedAssemblerDefault();
if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
IsIntegratedAssemblerDefault) ||
Args.hasArg(options::OPT_dA))
CmdArgs.push_back("-masm-verbose");
if (!Args.hasFlag(options::OPT_fintegrated_as, options::OPT_fno_integrated_as,
IsIntegratedAssemblerDefault))
CmdArgs.push_back("-no-integrated-as");
if (Args.hasArg(options::OPT_fdebug_pass_structure)) {
CmdArgs.push_back("-mdebug-pass");
CmdArgs.push_back("Structure");
}
if (Args.hasArg(options::OPT_fdebug_pass_arguments)) {
CmdArgs.push_back("-mdebug-pass");
CmdArgs.push_back("Arguments");
}
// Enable -mconstructor-aliases except on darwin, where we have to work around
// a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
// aliases aren't supported.
if (!getToolChain().getTriple().isOSDarwin() &&
!getToolChain().getTriple().isNVPTX())
CmdArgs.push_back("-mconstructor-aliases");
// Darwin's kernel doesn't support guard variables; just die if we
// try to use them.
if (KernelOrKext && getToolChain().getTriple().isOSDarwin())
CmdArgs.push_back("-fforbid-guard-variables");
if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
false)) {
CmdArgs.push_back("-mms-bitfields");
}
// This is a coarse approximation of what llvm-gcc actually does, both
// -fasynchronous-unwind-tables and -fnon-call-exceptions interact in more
// complicated ways.
bool AsynchronousUnwindTables =
Args.hasFlag(options::OPT_fasynchronous_unwind_tables,
options::OPT_fno_asynchronous_unwind_tables,
(getToolChain().IsUnwindTablesDefault() ||
getToolChain().getSanitizerArgs().needsUnwindTables()) &&
!KernelOrKext);
if (Args.hasFlag(options::OPT_funwind_tables, options::OPT_fno_unwind_tables,
AsynchronousUnwindTables))
CmdArgs.push_back("-munwind-tables");
getToolChain().addClangTargetOptions(Args, CmdArgs);
if (Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
CmdArgs.push_back("-mlimit-float-precision");
CmdArgs.push_back(A->getValue());
}
// FIXME: Handle -mtune=.
(void)Args.hasArg(options::OPT_mtune_EQ);
if (Arg *A = Args.getLastArg(options::OPT_mcmodel_EQ)) {
CmdArgs.push_back("-mcode-model");
CmdArgs.push_back(A->getValue());
}
// Add the target cpu
std::string CPU = getCPUName(Args, Triple, /*FromAs*/ false);
if (!CPU.empty()) {
CmdArgs.push_back("-target-cpu");
CmdArgs.push_back(Args.MakeArgString(CPU));
}
if (const Arg *A = Args.getLastArg(options::OPT_mfpmath_EQ)) {
CmdArgs.push_back("-mfpmath");
CmdArgs.push_back(A->getValue());
}
// Add the target features
getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, false);
// Add target specific flags.
switch (getToolChain().getArch()) {
default:
break;
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
// Use the effective triple, which takes into account the deployment target.
AddARMTargetArgs(Triple, Args, CmdArgs, KernelOrKext);
break;
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
AddAArch64TargetArgs(Args, CmdArgs);
break;
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
AddMIPSTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
AddPPCTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
case llvm::Triple::sparcv9:
AddSparcTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::systemz:
AddSystemZTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
AddX86TargetArgs(Args, CmdArgs);
break;
case llvm::Triple::lanai:
AddLanaiTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::hexagon:
AddHexagonTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::wasm32:
case llvm::Triple::wasm64:
AddWebAssemblyTargetArgs(Args, CmdArgs);
break;
}
// The 'g' groups options involve a somewhat intricate sequence of decisions
// about what to pass from the driver to the frontend, but by the time they
// reach cc1 they've been factored into three well-defined orthogonal choices:
// * what level of debug info to generate
// * what dwarf version to write
// * what debugger tuning to use
// This avoids having to monkey around further in cc1 other than to disable
// codeview if not running in a Windows environment. Perhaps even that
// decision should be made in the driver as well though.
unsigned DwarfVersion = 0;
llvm::DebuggerKind DebuggerTuning = getToolChain().getDefaultDebuggerTuning();
// These two are potentially updated by AddClangCLArgs.
codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
bool EmitCodeView = false;
// Add clang-cl arguments.
types::ID InputType = Input.getType();
if (getToolChain().getDriver().IsCLMode())
AddClangCLArgs(Args, InputType, CmdArgs, &DebugInfoKind, &EmitCodeView);
// Pass the linker version in use.
if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
CmdArgs.push_back("-target-linker-version");
CmdArgs.push_back(A->getValue());
}
if (!shouldUseLeafFramePointer(Args, getToolChain().getTriple()))
CmdArgs.push_back("-momit-leaf-frame-pointer");
// Explicitly error on some things we know we don't support and can't just
// ignore.
if (!Args.hasArg(options::OPT_fallow_unsupported)) {
Arg *Unsupported;
if (types::isCXX(InputType) && getToolChain().getTriple().isOSDarwin() &&
getToolChain().getArch() == llvm::Triple::x86) {
if ((Unsupported = Args.getLastArg(options::OPT_fapple_kext)) ||
(Unsupported = Args.getLastArg(options::OPT_mkernel)))
D.Diag(diag::err_drv_clang_unsupported_opt_cxx_darwin_i386)
<< Unsupported->getOption().getName();
}
}
Args.AddAllArgs(CmdArgs, options::OPT_v);
Args.AddLastArg(CmdArgs, options::OPT_H);
if (D.CCPrintHeaders && !D.CCGenDiagnostics) {
CmdArgs.push_back("-header-include-file");
CmdArgs.push_back(D.CCPrintHeadersFilename ? D.CCPrintHeadersFilename
: "-");
}
Args.AddLastArg(CmdArgs, options::OPT_P);
Args.AddLastArg(CmdArgs, options::OPT_print_ivar_layout);
if (D.CCLogDiagnostics && !D.CCGenDiagnostics) {
CmdArgs.push_back("-diagnostic-log-file");
CmdArgs.push_back(D.CCLogDiagnosticsFilename ? D.CCLogDiagnosticsFilename
: "-");
}
bool splitDwarfInlining =
Args.hasFlag(options::OPT_fsplit_dwarf_inlining,
options::OPT_fno_split_dwarf_inlining, true);
Args.ClaimAllArgs(options::OPT_g_Group);
Arg *SplitDwarfArg = Args.getLastArg(options::OPT_gsplit_dwarf);
if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
// If the last option explicitly specified a debug-info level, use it.
if (A->getOption().matches(options::OPT_gN_Group)) {
DebugInfoKind = DebugLevelToInfoKind(*A);
// If you say "-gsplit-dwarf -gline-tables-only", -gsplit-dwarf loses.
// But -gsplit-dwarf is not a g_group option, hence we have to check the
// order explicitly. (If -gsplit-dwarf wins, we fix DebugInfoKind later.)
// This gets a bit more complicated if you've disabled inline info in the
// skeleton CUs (splitDwarfInlining) - then there's value in composing
// split-dwarf and line-tables-only, so let those compose naturally in
// that case.
// And if you just turned off debug info, (-gsplit-dwarf -g0) - do that.
if (SplitDwarfArg) {
if (A->getIndex() > SplitDwarfArg->getIndex()) {
if (DebugInfoKind == codegenoptions::NoDebugInfo ||
(DebugInfoKind == codegenoptions::DebugLineTablesOnly &&
splitDwarfInlining))
SplitDwarfArg = nullptr;
} else if (splitDwarfInlining)
DebugInfoKind = codegenoptions::NoDebugInfo;
}
} else
// For any other 'g' option, use Limited.
DebugInfoKind = codegenoptions::LimitedDebugInfo;
}
// If a debugger tuning argument appeared, remember it.
if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
options::OPT_ggdbN_Group)) {
if (A->getOption().matches(options::OPT_glldb))
DebuggerTuning = llvm::DebuggerKind::LLDB;
else if (A->getOption().matches(options::OPT_gsce))
DebuggerTuning = llvm::DebuggerKind::SCE;
else
DebuggerTuning = llvm::DebuggerKind::GDB;
}
// If a -gdwarf argument appeared, remember it.
if (Arg *A = Args.getLastArg(options::OPT_gdwarf_2, options::OPT_gdwarf_3,
options::OPT_gdwarf_4, options::OPT_gdwarf_5))
DwarfVersion = DwarfVersionNum(A->getSpelling());
// Forward -gcodeview. EmitCodeView might have been set by CL-compatibility
// argument parsing.
if (Args.hasArg(options::OPT_gcodeview) || EmitCodeView) {
// DwarfVersion remains at 0 if no explicit choice was made.
CmdArgs.push_back("-gcodeview");
} else if (DwarfVersion == 0 &&
DebugInfoKind != codegenoptions::NoDebugInfo) {
DwarfVersion = getToolChain().GetDefaultDwarfVersion();
}
// We ignore flags -gstrict-dwarf and -grecord-gcc-switches for now.
Args.ClaimAllArgs(options::OPT_g_flags_Group);
// Column info is included by default for everything except PS4 and CodeView.
// Clang doesn't track end columns, just starting columns, which, in theory,
// is fine for CodeView (and PDB). In practice, however, the Microsoft
// debuggers don't handle missing end columns well, so it's better not to
// include any column info.
if (Args.hasFlag(options::OPT_gcolumn_info, options::OPT_gno_column_info,
/*Default=*/ !IsPS4CPU && !(IsWindowsMSVC && EmitCodeView)))
CmdArgs.push_back("-dwarf-column-info");
// FIXME: Move backend command line options to the module.
// If -gline-tables-only is the last option it wins.
if (DebugInfoKind != codegenoptions::DebugLineTablesOnly &&
Args.hasArg(options::OPT_gmodules)) {
DebugInfoKind = codegenoptions::LimitedDebugInfo;
CmdArgs.push_back("-dwarf-ext-refs");
CmdArgs.push_back("-fmodule-format=obj");
}
// -gsplit-dwarf should turn on -g and enable the backend dwarf
// splitting and extraction.
// FIXME: Currently only works on Linux.
if (getToolChain().getTriple().isOSLinux() && SplitDwarfArg) {
if (!splitDwarfInlining)
CmdArgs.push_back("-fno-split-dwarf-inlining");
if (DebugInfoKind == codegenoptions::NoDebugInfo)
DebugInfoKind = codegenoptions::LimitedDebugInfo;
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-split-dwarf=Enable");
}
// After we've dealt with all combinations of things that could
// make DebugInfoKind be other than None or DebugLineTablesOnly,
// figure out if we need to "upgrade" it to standalone debug info.
// We parse these two '-f' options whether or not they will be used,
// to claim them even if you wrote "-fstandalone-debug -gline-tables-only"
bool NeedFullDebug = Args.hasFlag(options::OPT_fstandalone_debug,
options::OPT_fno_standalone_debug,
getToolChain().GetDefaultStandaloneDebug());
if (DebugInfoKind == codegenoptions::LimitedDebugInfo && NeedFullDebug)
DebugInfoKind = codegenoptions::FullDebugInfo;
RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
DebuggerTuning);
// -ggnu-pubnames turns on gnu style pubnames in the backend.
if (Args.hasArg(options::OPT_ggnu_pubnames)) {
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-generate-gnu-dwarf-pub-sections");
}
// -gdwarf-aranges turns on the emission of the aranges section in the
// backend.
// Always enabled on the PS4.
if (Args.hasArg(options::OPT_gdwarf_aranges) || IsPS4CPU) {
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-generate-arange-section");
}
if (Args.hasFlag(options::OPT_fdebug_types_section,
options::OPT_fno_debug_types_section, false)) {
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-generate-type-units");
}
bool UseSeparateSections = isUseSeparateSections(Triple);
if (Args.hasFlag(options::OPT_ffunction_sections,
options::OPT_fno_function_sections, UseSeparateSections)) {
CmdArgs.push_back("-ffunction-sections");
}
if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
UseSeparateSections)) {
CmdArgs.push_back("-fdata-sections");
}
if (!Args.hasFlag(options::OPT_funique_section_names,
options::OPT_fno_unique_section_names, true))
CmdArgs.push_back("-fno-unique-section-names");
Args.AddAllArgs(CmdArgs, options::OPT_finstrument_functions);
if (Args.hasFlag(options::OPT_fxray_instrument,
options::OPT_fnoxray_instrument, false)) {
CmdArgs.push_back("-fxray-instrument");
if (const Arg *A =
Args.getLastArg(options::OPT_fxray_instruction_threshold_,
options::OPT_fxray_instruction_threshold_EQ)) {
CmdArgs.push_back("-fxray-instruction-threshold");
CmdArgs.push_back(A->getValue());
}
}
addPGOAndCoverageFlags(C, D, Output, Args, CmdArgs);
// Add runtime flag for PS4 when PGO or Coverage are enabled.
if (getToolChain().getTriple().isPS4CPU())
addPS4ProfileRTArgs(getToolChain(), Args, CmdArgs);
// Pass options for controlling the default header search paths.
if (Args.hasArg(options::OPT_nostdinc)) {
CmdArgs.push_back("-nostdsysteminc");
CmdArgs.push_back("-nobuiltininc");
} else {
if (Args.hasArg(options::OPT_nostdlibinc))
CmdArgs.push_back("-nostdsysteminc");
Args.AddLastArg(CmdArgs, options::OPT_nostdincxx);
Args.AddLastArg(CmdArgs, options::OPT_nobuiltininc);
}
// Pass the path to compiler resource files.
CmdArgs.push_back("-resource-dir");
CmdArgs.push_back(D.ResourceDir.c_str());
Args.AddLastArg(CmdArgs, options::OPT_working_directory);
bool ARCMTEnabled = false;
if (!Args.hasArg(options::OPT_fno_objc_arc, options::OPT_fobjc_arc)) {
if (const Arg *A = Args.getLastArg(options::OPT_ccc_arcmt_check,
options::OPT_ccc_arcmt_modify,
options::OPT_ccc_arcmt_migrate)) {
ARCMTEnabled = true;
switch (A->getOption().getID()) {
default:
llvm_unreachable("missed a case");
case options::OPT_ccc_arcmt_check:
CmdArgs.push_back("-arcmt-check");
break;
case options::OPT_ccc_arcmt_modify:
CmdArgs.push_back("-arcmt-modify");
break;
case options::OPT_ccc_arcmt_migrate:
CmdArgs.push_back("-arcmt-migrate");
CmdArgs.push_back("-mt-migrate-directory");
CmdArgs.push_back(A->getValue());
Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_report_output);
Args.AddLastArg(CmdArgs, options::OPT_arcmt_migrate_emit_arc_errors);
break;
}
}
} else {
Args.ClaimAllArgs(options::OPT_ccc_arcmt_check);
Args.ClaimAllArgs(options::OPT_ccc_arcmt_modify);
Args.ClaimAllArgs(options::OPT_ccc_arcmt_migrate);
}
if (const Arg *A = Args.getLastArg(options::OPT_ccc_objcmt_migrate)) {
if (ARCMTEnabled) {
D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
<< "-ccc-arcmt-migrate";
}
CmdArgs.push_back("-mt-migrate-directory");
CmdArgs.push_back(A->getValue());
if (!Args.hasArg(options::OPT_objcmt_migrate_literals,
options::OPT_objcmt_migrate_subscripting,
options::OPT_objcmt_migrate_property)) {
// None specified, means enable them all.
CmdArgs.push_back("-objcmt-migrate-literals");
CmdArgs.push_back("-objcmt-migrate-subscripting");
CmdArgs.push_back("-objcmt-migrate-property");
} else {
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
}
} else {
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_literals);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_subscripting);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_all);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readonly_property);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_readwrite_property);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_property_dot_syntax);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_annotation);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_instancetype);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_nsmacros);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_protocol_conformance);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_atomic_property);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_returns_innerpointer_property);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_ns_nonatomic_iosonly);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_migrate_designated_init);
Args.AddLastArg(CmdArgs, options::OPT_objcmt_whitelist_dir_path);
}
// Add preprocessing options like -I, -D, etc. if we are using the
// preprocessor.
//
// FIXME: Support -fpreprocessed
if (types::getPreprocessedType(InputType) != types::TY_INVALID)
AddPreprocessingOptions(C, JA, D, Args, CmdArgs, Output, Inputs);
// Don't warn about "clang -c -DPIC -fPIC test.i" because libtool.m4 assumes
// that "The compiler can only warn and ignore the option if not recognized".
// When building with ccache, it will pass -D options to clang even on
// preprocessed inputs and configure concludes that -fPIC is not supported.
Args.ClaimAllArgs(options::OPT_D);
// Manually translate -O4 to -O3; let clang reject others.
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
if (A->getOption().matches(options::OPT_O4)) {
CmdArgs.push_back("-O3");
D.Diag(diag::warn_O4_is_O3);
} else {
A->render(Args, CmdArgs);
}
}
// Warn about ignored options to clang.
for (const Arg *A :
Args.filtered(options::OPT_clang_ignored_gcc_optimization_f_Group)) {
D.Diag(diag::warn_ignored_gcc_optimization) << A->getAsString(Args);
A->claim();
}
claimNoWarnArgs(Args);
Args.AddAllArgs(CmdArgs, options::OPT_R_Group);
Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
CmdArgs.push_back("-pedantic");
Args.AddLastArg(CmdArgs, options::OPT_pedantic_errors);
Args.AddLastArg(CmdArgs, options::OPT_w);
// Handle -{std, ansi, trigraphs} -- take the last of -{std, ansi}
// (-ansi is equivalent to -std=c89 or -std=c++98).
//
// If a std is supplied, only add -trigraphs if it follows the
// option.
bool ImplyVCPPCXXVer = false;
if (Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi)) {
if (Std->getOption().matches(options::OPT_ansi))
if (types::isCXX(InputType))
CmdArgs.push_back("-std=c++98");
else
CmdArgs.push_back("-std=c89");
else
Std->render(Args, CmdArgs);
// If -f(no-)trigraphs appears after the language standard flag, honor it.
if (Arg *A = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi,
options::OPT_ftrigraphs,
options::OPT_fno_trigraphs))
if (A != Std)
A->render(Args, CmdArgs);
} else {
// Honor -std-default.
//
// FIXME: Clang doesn't correctly handle -std= when the input language
// doesn't match. For the time being just ignore this for C++ inputs;
// eventually we want to do all the standard defaulting here instead of
// splitting it between the driver and clang -cc1.
if (!types::isCXX(InputType))
Args.AddAllArgsTranslated(CmdArgs, options::OPT_std_default_EQ, "-std=",
/*Joined=*/true);
else if (IsWindowsMSVC)
ImplyVCPPCXXVer = true;
Args.AddLastArg(CmdArgs, options::OPT_ftrigraphs,
options::OPT_fno_trigraphs);
}
// GCC's behavior for -Wwrite-strings is a bit strange:
// * In C, this "warning flag" changes the types of string literals from
// 'char[N]' to 'const char[N]', and thus triggers an unrelated warning
// for the discarded qualifier.
// * In C++, this is just a normal warning flag.
//
// Implementing this warning correctly in C is hard, so we follow GCC's
// behavior for now. FIXME: Directly diagnose uses of a string literal as
// a non-const char* in C, rather than using this crude hack.
if (!types::isCXX(InputType)) {
// FIXME: This should behave just like a warning flag, and thus should also
// respect -Weverything, -Wno-everything, -Werror=write-strings, and so on.
Arg *WriteStrings =
Args.getLastArg(options::OPT_Wwrite_strings,
options::OPT_Wno_write_strings, options::OPT_w);
if (WriteStrings &&
WriteStrings->getOption().matches(options::OPT_Wwrite_strings))
CmdArgs.push_back("-fconst-strings");
}
// GCC provides a macro definition '__DEPRECATED' when -Wdeprecated is active
// during C++ compilation, which it is by default. GCC keeps this define even
// in the presence of '-w', match this behavior bug-for-bug.
if (types::isCXX(InputType) &&
Args.hasFlag(options::OPT_Wdeprecated, options::OPT_Wno_deprecated,
true)) {
CmdArgs.push_back("-fdeprecated-macro");
}
// Translate GCC's misnamer '-fasm' arguments to '-fgnu-keywords'.
if (Arg *Asm = Args.getLastArg(options::OPT_fasm, options::OPT_fno_asm)) {
if (Asm->getOption().matches(options::OPT_fasm))
CmdArgs.push_back("-fgnu-keywords");
else
CmdArgs.push_back("-fno-gnu-keywords");
}
if (ShouldDisableDwarfDirectory(Args, getToolChain()))
CmdArgs.push_back("-fno-dwarf-directory-asm");
if (ShouldDisableAutolink(Args, getToolChain()))
CmdArgs.push_back("-fno-autolink");
// Add in -fdebug-compilation-dir if necessary.
addDebugCompDirArg(Args, CmdArgs);
for (const Arg *A : Args.filtered(options::OPT_fdebug_prefix_map_EQ)) {
StringRef Map = A->getValue();
if (Map.find('=') == StringRef::npos)
D.Diag(diag::err_drv_invalid_argument_to_fdebug_prefix_map) << Map;
else
CmdArgs.push_back(Args.MakeArgString("-fdebug-prefix-map=" + Map));
A->claim();
}
if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_,
options::OPT_ftemplate_depth_EQ)) {
CmdArgs.push_back("-ftemplate-depth");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_foperator_arrow_depth_EQ)) {
CmdArgs.push_back("-foperator-arrow-depth");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_depth_EQ)) {
CmdArgs.push_back("-fconstexpr-depth");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
CmdArgs.push_back("-fconstexpr-steps");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
CmdArgs.push_back("-fbracket-depth");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
options::OPT_Wlarge_by_value_copy_def)) {
if (A->getNumValues()) {
StringRef bytes = A->getValue();
CmdArgs.push_back(Args.MakeArgString("-Wlarge-by-value-copy=" + bytes));
} else
CmdArgs.push_back("-Wlarge-by-value-copy=64"); // default value
}
if (Args.hasArg(options::OPT_relocatable_pch))
CmdArgs.push_back("-relocatable-pch");
if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {
CmdArgs.push_back("-fconstant-string-class");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_ftabstop_EQ)) {
CmdArgs.push_back("-ftabstop");
CmdArgs.push_back(A->getValue());
}
CmdArgs.push_back("-ferror-limit");
if (Arg *A = Args.getLastArg(options::OPT_ferror_limit_EQ))
CmdArgs.push_back(A->getValue());
else
CmdArgs.push_back("19");
if (Arg *A = Args.getLastArg(options::OPT_fmacro_backtrace_limit_EQ)) {
CmdArgs.push_back("-fmacro-backtrace-limit");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_ftemplate_backtrace_limit_EQ)) {
CmdArgs.push_back("-ftemplate-backtrace-limit");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_backtrace_limit_EQ)) {
CmdArgs.push_back("-fconstexpr-backtrace-limit");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(options::OPT_fspell_checking_limit_EQ)) {
CmdArgs.push_back("-fspell-checking-limit");
CmdArgs.push_back(A->getValue());
}
// Pass -fmessage-length=.
CmdArgs.push_back("-fmessage-length");
if (Arg *A = Args.getLastArg(options::OPT_fmessage_length_EQ)) {
CmdArgs.push_back(A->getValue());
} else {
// If -fmessage-length=N was not specified, determine whether this is a
// terminal and, if so, implicitly define -fmessage-length appropriately.
unsigned N = llvm::sys::Process::StandardErrColumns();
CmdArgs.push_back(Args.MakeArgString(Twine(N)));
}
// -fvisibility= and -fvisibility-ms-compat are of a piece.
if (const Arg *A = Args.getLastArg(options::OPT_fvisibility_EQ,
options::OPT_fvisibility_ms_compat)) {
if (A->getOption().matches(options::OPT_fvisibility_EQ)) {
CmdArgs.push_back("-fvisibility");
CmdArgs.push_back(A->getValue());
} else {
assert(A->getOption().matches(options::OPT_fvisibility_ms_compat));
CmdArgs.push_back("-fvisibility");
CmdArgs.push_back("hidden");
CmdArgs.push_back("-ftype-visibility");
CmdArgs.push_back("default");
}
}
Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden);
Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
// -fhosted is default.
if (Args.hasFlag(options::OPT_ffreestanding, options::OPT_fhosted, false) ||
KernelOrKext)
CmdArgs.push_back("-ffreestanding");
// Forward -f (flag) options which we can pass directly.
Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
// Emulated TLS is enabled by default on Android, and can be enabled manually
// with -femulated-tls.
bool EmulatedTLSDefault = Triple.isAndroid() || Triple.isWindowsCygwinEnvironment();
if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
EmulatedTLSDefault))
CmdArgs.push_back("-femulated-tls");
// AltiVec-like language extensions aren't relevant for assembling.
if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm) {
Args.AddLastArg(CmdArgs, options::OPT_faltivec);
Args.AddLastArg(CmdArgs, options::OPT_fzvector);
}
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_show_template_tree);
Args.AddLastArg(CmdArgs, options::OPT_fno_elide_type);
// Forward flags for OpenMP. We don't do this if the current action is an
// device offloading action.
//
// TODO: Allow OpenMP offload actions when they become available.
if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
options::OPT_fno_openmp, false) &&
JA.isDeviceOffloading(Action::OFK_None)) {
switch (getOpenMPRuntime(getToolChain(), Args)) {
case OMPRT_OMP:
case OMPRT_IOMP5:
// Clang can generate useful OpenMP code for these two runtime libraries.
CmdArgs.push_back("-fopenmp");
// If no option regarding the use of TLS in OpenMP codegeneration is
// given, decide a default based on the target. Otherwise rely on the
// options and pass the right information to the frontend.
if (!Args.hasFlag(options::OPT_fopenmp_use_tls,
options::OPT_fnoopenmp_use_tls, /*Default=*/true))
CmdArgs.push_back("-fnoopenmp-use-tls");
Args.AddAllArgs(CmdArgs, options::OPT_fopenmp_version_EQ);
break;
default:
// By default, if Clang doesn't know how to generate useful OpenMP code
// for a specific runtime library, we just don't pass the '-fopenmp' flag
// down to the actual compilation.
// FIXME: It would be better to have a mode which *only* omits IR
// generation based on the OpenMP support so that we get consistent
// semantic analysis, etc.
break;
}
}
const SanitizerArgs &Sanitize = getToolChain().getSanitizerArgs();
Sanitize.addArgs(getToolChain(), Args, CmdArgs, InputType);
// Report an error for -faltivec on anything other than PowerPC.
if (const Arg *A = Args.getLastArg(options::OPT_faltivec)) {
const llvm::Triple::ArchType Arch = getToolChain().getArch();
if (!(Arch == llvm::Triple::ppc || Arch == llvm::Triple::ppc64 ||
Arch == llvm::Triple::ppc64le))
D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
<< "ppc/ppc64/ppc64le";
}
// -fzvector is incompatible with -faltivec.
if (Arg *A = Args.getLastArg(options::OPT_fzvector))
if (Args.hasArg(options::OPT_faltivec))
D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
<< "-faltivec";
if (getToolChain().SupportsProfiling())
Args.AddLastArg(CmdArgs, options::OPT_pg);
// -flax-vector-conversions is default.
if (!Args.hasFlag(options::OPT_flax_vector_conversions,
options::OPT_fno_lax_vector_conversions))
CmdArgs.push_back("-fno-lax-vector-conversions");
if (Args.getLastArg(options::OPT_fapple_kext) ||
(Args.hasArg(options::OPT_mkernel) && types::isCXX(InputType)))
CmdArgs.push_back("-fapple-kext");
Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
CmdArgs.push_back("-ftrapv-handler");
CmdArgs.push_back(A->getValue());
}
Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
// -fno-strict-overflow implies -fwrapv if it isn't disabled, but
// -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
if (Arg *A = Args.getLastArg(options::OPT_fwrapv, options::OPT_fno_wrapv)) {
if (A->getOption().matches(options::OPT_fwrapv))
CmdArgs.push_back("-fwrapv");
} else if (Arg *A = Args.getLastArg(options::OPT_fstrict_overflow,
options::OPT_fno_strict_overflow)) {
if (A->getOption().matches(options::OPT_fno_strict_overflow))
CmdArgs.push_back("-fwrapv");
}
if (Arg *A = Args.getLastArg(options::OPT_freroll_loops,
options::OPT_fno_reroll_loops))
if (A->getOption().matches(options::OPT_freroll_loops))
CmdArgs.push_back("-freroll-loops");
Args.AddLastArg(CmdArgs, options::OPT_fwritable_strings);
Args.AddLastArg(CmdArgs, options::OPT_funroll_loops,
options::OPT_fno_unroll_loops);
Args.AddLastArg(CmdArgs, options::OPT_pthread);
// -stack-protector=0 is default.
unsigned StackProtectorLevel = 0;
if (Arg *A = Args.getLastArg(options::OPT_fno_stack_protector,
options::OPT_fstack_protector_all,
options::OPT_fstack_protector_strong,
options::OPT_fstack_protector)) {
if (A->getOption().matches(options::OPT_fstack_protector)) {
StackProtectorLevel = std::max<unsigned>(
LangOptions::SSPOn,
getToolChain().GetDefaultStackProtectorLevel(KernelOrKext));
} else if (A->getOption().matches(options::OPT_fstack_protector_strong))
StackProtectorLevel = LangOptions::SSPStrong;
else if (A->getOption().matches(options::OPT_fstack_protector_all))
StackProtectorLevel = LangOptions::SSPReq;
} else {
StackProtectorLevel =
getToolChain().GetDefaultStackProtectorLevel(KernelOrKext);
}
if (StackProtectorLevel) {
CmdArgs.push_back("-stack-protector");
CmdArgs.push_back(Args.MakeArgString(Twine(StackProtectorLevel)));
}
// --param ssp-buffer-size=
for (const Arg *A : Args.filtered(options::OPT__param)) {
StringRef Str(A->getValue());
if (Str.startswith("ssp-buffer-size=")) {
if (StackProtectorLevel) {
CmdArgs.push_back("-stack-protector-buffer-size");
// FIXME: Verify the argument is a valid integer.
CmdArgs.push_back(Args.MakeArgString(Str.drop_front(16)));
}
A->claim();
}
}
// Translate -mstackrealign
if (Args.hasFlag(options::OPT_mstackrealign, options::OPT_mno_stackrealign,
false))
CmdArgs.push_back(Args.MakeArgString("-mstackrealign"));
if (Args.hasArg(options::OPT_mstack_alignment)) {
StringRef alignment = Args.getLastArgValue(options::OPT_mstack_alignment);
CmdArgs.push_back(Args.MakeArgString("-mstack-alignment=" + alignment));
}
if (Args.hasArg(options::OPT_mstack_probe_size)) {
StringRef Size = Args.getLastArgValue(options::OPT_mstack_probe_size);
if (!Size.empty())
CmdArgs.push_back(Args.MakeArgString("-mstack-probe-size=" + Size));
else
CmdArgs.push_back("-mstack-probe-size=0");
}
switch (getToolChain().getArch()) {
case llvm::Triple::aarch64:
case llvm::Triple::aarch64_be:
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
CmdArgs.push_back("-fallow-half-arguments-and-returns");
break;
default:
break;
}
if (Arg *A = Args.getLastArg(options::OPT_mrestrict_it,
options::OPT_mno_restrict_it)) {
if (A->getOption().matches(options::OPT_mrestrict_it)) {
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-arm-restrict-it");
} else {
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-arm-no-restrict-it");
}
} else if (Triple.isOSWindows() &&
(Triple.getArch() == llvm::Triple::arm ||
Triple.getArch() == llvm::Triple::thumb)) {
// Windows on ARM expects restricted IT blocks
CmdArgs.push_back("-backend-option");
CmdArgs.push_back("-arm-restrict-it");
}
// Forward -cl options to -cc1
if (Args.getLastArg(options::OPT_cl_opt_disable)) {
CmdArgs.push_back("-cl-opt-disable");
}
if (Args.getLastArg(options::OPT_cl_strict_aliasing)) {
CmdArgs.push_back("-cl-strict-aliasing");
}
if (Args.getLastArg(options::OPT_cl_single_precision_constant)) {
CmdArgs.push_back("-cl-single-precision-constant");
}
if (Args.getLastArg(options::OPT_cl_finite_math_only)) {
CmdArgs.push_back("-cl-finite-math-only");
}
if (Args.getLastArg(options::OPT_cl_kernel_arg_info)) {
CmdArgs.push_back("-cl-kernel-arg-info");
}
if (Args.getLastArg(options::OPT_cl_unsafe_math_optimizations)) {
CmdArgs.push_back("-cl-unsafe-math-optimizations");
}
if (Args.getLastArg(options::OPT_cl_fast_relaxed_math)) {
CmdArgs.push_back("-cl-fast-relaxed-math");
}
if (Args.getLastArg(options::OPT_cl_mad_enable)) {
CmdArgs.push_back("-cl-mad-enable");
}
if (Args.getLastArg(options::OPT_cl_no_signed_zeros)) {
CmdArgs.push_back("-cl-no-signed-zeros");
}
if (Arg *A = Args.getLastArg(options::OPT_cl_std_EQ)) {
std::string CLStdStr = "-cl-std=";
CLStdStr += A->getValue();
CmdArgs.push_back(Args.MakeArgString(CLStdStr));
}
if (Args.getLastArg(options::OPT_cl_denorms_are_zero)) {
CmdArgs.push_back("-cl-denorms-are-zero");
}
if (Args.getLastArg(options::OPT_cl_fp32_correctly_rounded_divide_sqrt)) {
CmdArgs.push_back("-cl-fp32-correctly-rounded-divide-sqrt");
}
// Forward -f options with positive and negative forms; we translate
// these by hand.
if (Arg *A = Args.getLastArg(options::OPT_fprofile_sample_use_EQ)) {
StringRef fname = A->getValue();
if (!llvm::sys::fs::exists(fname))
D.Diag(diag::err_drv_no_such_file) << fname;
else
A->render(Args, CmdArgs);
}
// -fbuiltin is default unless -mkernel is used.
bool UseBuiltins =
Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin,
!Args.hasArg(options::OPT_mkernel));
if (!UseBuiltins)
CmdArgs.push_back("-fno-builtin");
// -ffreestanding implies -fno-builtin.
if (Args.hasArg(options::OPT_ffreestanding))
UseBuiltins = false;
// Process the -fno-builtin-* options.
for (const auto &Arg : Args) {
const Option &O = Arg->getOption();
if (!O.matches(options::OPT_fno_builtin_))
continue;
Arg->claim();
// If -fno-builtin is specified, then there's no need to pass the option to
// the frontend.
if (!UseBuiltins)
continue;
StringRef FuncName = Arg->getValue();
CmdArgs.push_back(Args.MakeArgString("-fno-builtin-" + FuncName));
}
if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
options::OPT_fno_assume_sane_operator_new))
CmdArgs.push_back("-fno-assume-sane-operator-new");
// -fblocks=0 is default.
if (Args.hasFlag(options::OPT_fblocks, options::OPT_fno_blocks,
getToolChain().IsBlocksDefault()) ||
(Args.hasArg(options::OPT_fgnu_runtime) &&
Args.hasArg(options::OPT_fobjc_nonfragile_abi) &&
!Args.hasArg(options::OPT_fno_blocks))) {
CmdArgs.push_back("-fblocks");
if (!Args.hasArg(options::OPT_fgnu_runtime) &&
!getToolChain().hasBlocksRuntime())
CmdArgs.push_back("-fblocks-runtime-optional");
}
if (Args.hasFlag(options::OPT_fcoroutines_ts, options::OPT_fno_coroutines_ts,
false) &&
types::isCXX(InputType)) {
CmdArgs.push_back("-fcoroutines-ts");
}
// -fmodules enables the use of precompiled modules (off by default).
// Users can pass -fno-cxx-modules to turn off modules support for
// C++/Objective-C++ programs.
bool HaveClangModules = false;
if (Args.hasFlag(options::OPT_fmodules, options::OPT_fno_modules, false)) {
bool AllowedInCXX = Args.hasFlag(options::OPT_fcxx_modules,
options::OPT_fno_cxx_modules, true);
if (AllowedInCXX || !types::isCXX(InputType)) {
CmdArgs.push_back("-fmodules");
HaveClangModules = true;
}
}
bool HaveAnyModules = HaveClangModules;
if (Args.hasArg(options::OPT_fmodules_ts)) {
CmdArgs.push_back("-fmodules-ts");
HaveAnyModules = true;
}
// -fmodule-maps enables implicit reading of module map files. By default,
// this is enabled if we are using Clang's flavor of precompiled modules.
if (Args.hasFlag(options::OPT_fimplicit_module_maps,
options::OPT_fno_implicit_module_maps, HaveClangModules)) {
CmdArgs.push_back("-fimplicit-module-maps");
}
// -fmodules-decluse checks that modules used are declared so (off by
// default).
if (Args.hasFlag(options::OPT_fmodules_decluse,
options::OPT_fno_modules_decluse, false)) {
CmdArgs.push_back("-fmodules-decluse");
}
// -fmodules-strict-decluse is like -fmodule-decluse, but also checks that
// all #included headers are part of modules.
if (Args.hasFlag(options::OPT_fmodules_strict_decluse,
options::OPT_fno_modules_strict_decluse, false)) {
CmdArgs.push_back("-fmodules-strict-decluse");
}
// -fno-implicit-modules turns off implicitly compiling modules on demand.
if (!Args.hasFlag(options::OPT_fimplicit_modules,
options::OPT_fno_implicit_modules, HaveClangModules)) {
if (HaveAnyModules)
CmdArgs.push_back("-fno-implicit-modules");
} else if (HaveAnyModules) {
// -fmodule-cache-path specifies where our implicitly-built module files
// should be written.
SmallString<128> Path;
if (Arg *A = Args.getLastArg(options::OPT_fmodules_cache_path))
Path = A->getValue();
if (C.isForDiagnostics()) {
// When generating crash reports, we want to emit the modules along with
// the reproduction sources, so we ignore any provided module path.
Path = Output.getFilename();
llvm::sys::path::replace_extension(Path, ".cache");
llvm::sys::path::append(Path, "modules");
} else if (Path.empty()) {
// No module path was provided: use the default.
llvm::sys::path::system_temp_directory(/*erasedOnReboot=*/false, Path);
llvm::sys::path::append(Path, "org.llvm.clang.");
appendUserToPath(Path);
llvm::sys::path::append(Path, "ModuleCache");
}
const char Arg[] = "-fmodules-cache-path=";
Path.insert(Path.begin(), Arg, Arg + strlen(Arg));
CmdArgs.push_back(Args.MakeArgString(Path));
}
if (HaveAnyModules) {
// -fprebuilt-module-path specifies where to load the prebuilt module files.
for (const Arg *A : Args.filtered(options::OPT_fprebuilt_module_path))
CmdArgs.push_back(Args.MakeArgString(
std::string("-fprebuilt-module-path=") + A->getValue()));
}
// -fmodule-name specifies the module that is currently being built (or
// used for header checking by -fmodule-maps).
Args.AddLastArg(CmdArgs, options::OPT_fmodule_name_EQ);
// -fmodule-map-file can be used to specify files containing module
// definitions.
Args.AddAllArgs(CmdArgs, options::OPT_fmodule_map_file);
// -fmodule-file can be used to specify files containing precompiled modules.
if (HaveAnyModules)
Args.AddAllArgs(CmdArgs, options::OPT_fmodule_file);
else
Args.ClaimAllArgs(options::OPT_fmodule_file);
// When building modules and generating crashdumps, we need to dump a module
// dependency VFS alongside the output.
if (HaveClangModules && C.isForDiagnostics()) {
SmallString<128> VFSDir(Output.getFilename());
llvm::sys::path::replace_extension(VFSDir, ".cache");
// Add the cache directory as a temp so the crash diagnostics pick it up.
C.addTempFile(Args.MakeArgString(VFSDir));
llvm::sys::path::append(VFSDir, "vfs");
CmdArgs.push_back("-module-dependency-dir");
CmdArgs.push_back(Args.MakeArgString(VFSDir));
}
if (HaveClangModules)
Args.AddLastArg(CmdArgs, options::OPT_fmodules_user_build_path);
// Pass through all -fmodules-ignore-macro arguments.
Args.AddAllArgs(CmdArgs, options::OPT_fmodules_ignore_macro);
Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_interval);
Args.AddLastArg(CmdArgs, options::OPT_fmodules_prune_after);
Args.AddLastArg(CmdArgs, options::OPT_fbuild_session_timestamp);
if (Arg *A = Args.getLastArg(options::OPT_fbuild_session_file)) {
if (Args.hasArg(options::OPT_fbuild_session_timestamp))
D.Diag(diag::err_drv_argument_not_allowed_with)
<< A->getAsString(Args) << "-fbuild-session-timestamp";
llvm::sys::fs::file_status Status;
if (llvm::sys::fs::status(A->getValue(), Status))
D.Diag(diag::err_drv_no_such_file) << A->getValue();
CmdArgs.push_back(Args.MakeArgString(
"-fbuild-session-timestamp=" +
Twine((uint64_t)Status.getLastModificationTime().toEpochTime())));
}
if (Args.getLastArg(options::OPT_fmodules_validate_once_per_build_session)) {
if (!Args.getLastArg(options::OPT_fbuild_session_timestamp,
options::OPT_fbuild_session_file))
D.Diag(diag::err_drv_modules_validate_once_requires_timestamp);
Args.AddLastArg(CmdArgs,
options::OPT_fmodules_validate_once_per_build_session);
}
Args.AddLastArg(CmdArgs, options::OPT_fmodules_validate_system_headers);
Args.AddLastArg(CmdArgs, options::OPT_fmodules_disable_diagnostic_validation);
// -faccess-control is default.
if (Args.hasFlag(options::OPT_fno_access_control,
options::OPT_faccess_control, false))
CmdArgs.push_back("-fno-access-control");
// -felide-constructors is the default.
if (Args.hasFlag(options::OPT_fno_elide_constructors,
options::OPT_felide_constructors, false))
CmdArgs.push_back("-fno-elide-constructors");
ToolChain::RTTIMode RTTIMode = getToolChain().getRTTIMode();
if (KernelOrKext || (types::isCXX(InputType) &&
(RTTIMode == ToolChain::RM_DisabledExplicitly ||
RTTIMode == ToolChain::RM_DisabledImplicitly)))
CmdArgs.push_back("-fno-rtti");
// -fshort-enums=0 is default for all architectures except Hexagon.
if (Args.hasFlag(options::OPT_fshort_enums, options::OPT_fno_short_enums,
getToolChain().getArch() == llvm::Triple::hexagon))
CmdArgs.push_back("-fshort-enums");
// -fsigned-char is default.
if (Arg *A = Args.getLastArg(
options::OPT_fsigned_char, options::OPT_fno_signed_char,
options::OPT_funsigned_char, options::OPT_fno_unsigned_char)) {
if (A->getOption().matches(options::OPT_funsigned_char) ||
A->getOption().matches(options::OPT_fno_signed_char)) {
CmdArgs.push_back("-fno-signed-char");
}
} else if (!isSignedCharDefault(getToolChain().getTriple())) {
CmdArgs.push_back("-fno-signed-char");
}
// -fuse-cxa-atexit is default.
if (!Args.hasFlag(
options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
!IsWindowsCygnus && !IsWindowsGNU &&
getToolChain().getTriple().getOS() != llvm::Triple::Solaris &&
getToolChain().getArch() != llvm::Triple::hexagon &&
getToolChain().getArch() != llvm::Triple::xcore &&
((getToolChain().getTriple().getVendor() !=
llvm::Triple::MipsTechnologies) ||
getToolChain().getTriple().hasEnvironment())) ||
KernelOrKext)
CmdArgs.push_back("-fno-use-cxa-atexit");
// -fms-extensions=0 is default.
if (Args.hasFlag(options::OPT_fms_extensions, options::OPT_fno_ms_extensions,
IsWindowsMSVC))
CmdArgs.push_back("-fms-extensions");
// -fno-use-line-directives is default.
if (Args.hasFlag(options::OPT_fuse_line_directives,
options::OPT_fno_use_line_directives, false))
CmdArgs.push_back("-fuse-line-directives");
// -fms-compatibility=0 is default.
if (Args.hasFlag(options::OPT_fms_compatibility,
options::OPT_fno_ms_compatibility,
(IsWindowsMSVC &&
Args.hasFlag(options::OPT_fms_extensions,
options::OPT_fno_ms_extensions, true))))
CmdArgs.push_back("-fms-compatibility");
// -fms-compatibility-version=18.00 is default.
VersionTuple MSVT = visualstudio::getMSVCVersion(
&D, getToolChain(), getToolChain().getTriple(), Args, IsWindowsMSVC);
if (!MSVT.empty())
CmdArgs.push_back(
Args.MakeArgString("-fms-compatibility-version=" + MSVT.getAsString()));
bool IsMSVC2015Compatible = MSVT.getMajor() >= 19;
if (ImplyVCPPCXXVer) {
StringRef LanguageStandard;
if (const Arg *StdArg = Args.getLastArg(options::OPT__SLASH_std)) {
LanguageStandard = llvm::StringSwitch<StringRef>(StdArg->getValue())
.Case("c++14", "-std=c++14")
.Case("c++latest", "-std=c++1z")
.Default("");
if (LanguageStandard.empty())
D.Diag(clang::diag::warn_drv_unused_argument)
<< StdArg->getAsString(Args);
}
if (LanguageStandard.empty()) {
if (IsMSVC2015Compatible)
LanguageStandard = "-std=c++14";
else
LanguageStandard = "-std=c++11";
}
CmdArgs.push_back(LanguageStandard.data());
}
// -fno-borland-extensions is default.
if (Args.hasFlag(options::OPT_fborland_extensions,
options::OPT_fno_borland_extensions, false))
CmdArgs.push_back("-fborland-extensions");
// -fno-declspec is default, except for PS4.
if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
getToolChain().getTriple().isPS4()))
CmdArgs.push_back("-fdeclspec");
else if (Args.hasArg(options::OPT_fno_declspec))
CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
// -fthreadsafe-static is default, except for MSVC compatibility versions less
// than 19.
if (!Args.hasFlag(options::OPT_fthreadsafe_statics,
options::OPT_fno_threadsafe_statics,
!IsWindowsMSVC || IsMSVC2015Compatible))
CmdArgs.push_back("-fno-threadsafe-statics");
// -fno-delayed-template-parsing is default, except for Windows where MSVC STL
// needs it.
if (Args.hasFlag(options::OPT_fdelayed_template_parsing,
options::OPT_fno_delayed_template_parsing, IsWindowsMSVC))
CmdArgs.push_back("-fdelayed-template-parsing");
// -fgnu-keywords default varies depending on language; only pass if
// specified.
if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,
options::OPT_fno_gnu_keywords))
A->render(Args, CmdArgs);
if (Args.hasFlag(options::OPT_fgnu89_inline, options::OPT_fno_gnu89_inline,
false))
CmdArgs.push_back("-fgnu89-inline");
if (Args.hasArg(options::OPT_fno_inline))
CmdArgs.push_back("-fno-inline");
if (Arg* InlineArg = Args.getLastArg(options::OPT_finline_functions,
options::OPT_finline_hint_functions,
options::OPT_fno_inline_functions))
InlineArg->render(Args, CmdArgs);
ObjCRuntime objcRuntime = AddObjCRuntimeArgs(Args, CmdArgs, rewriteKind);
// -fobjc-dispatch-method is only relevant with the nonfragile-abi, and
// legacy is the default. Except for deployment target of 10.5,
// next runtime is always legacy dispatch and -fno-objc-legacy-dispatch
// gets ignored silently.
if (objcRuntime.isNonFragile()) {
if (!Args.hasFlag(options::OPT_fobjc_legacy_dispatch,
options::OPT_fno_objc_legacy_dispatch,
objcRuntime.isLegacyDispatchDefaultForArch(
getToolChain().getArch()))) {
if (getToolChain().UseObjCMixedDispatch())
CmdArgs.push_back("-fobjc-dispatch-method=mixed");
else
CmdArgs.push_back("-fobjc-dispatch-method=non-legacy");
}
}
// When ObjectiveC legacy runtime is in effect on MacOSX,
// turn on the option to do Array/Dictionary subscripting
// by default.
if (getToolChain().getArch() == llvm::Triple::x86 &&
getToolChain().getTriple().isMacOSX() &&
!getToolChain().getTriple().isMacOSXVersionLT(10, 7) &&
objcRuntime.getKind() == ObjCRuntime::FragileMacOSX &&
objcRuntime.isNeXTFamily())
CmdArgs.push_back("-fobjc-subscripting-legacy-runtime");
// -fencode-extended-block-signature=1 is default.
if (getToolChain().IsEncodeExtendedBlockSignatureDefault()) {
CmdArgs.push_back("-fencode-extended-block-signature");
}
// Allow -fno-objc-arr to trump -fobjc-arr/-fobjc-arc.
// NOTE: This logic is duplicated in ToolChains.cpp.
bool ARC = isObjCAutoRefCount(Args);
if (ARC) {
getToolChain().CheckObjCARC();
CmdArgs.push_back("-fobjc-arc");
// FIXME: It seems like this entire block, and several around it should be
// wrapped in isObjC, but for now we just use it here as this is where it
// was being used previously.
if (types::isCXX(InputType) && types::isObjC(InputType)) {
if (getToolChain().GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
else
CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
}
// Allow the user to enable full exceptions code emission.
// We define off for Objective-CC, on for Objective-C++.
if (Args.hasFlag(options::OPT_fobjc_arc_exceptions,
options::OPT_fno_objc_arc_exceptions,
/*default*/ types::isCXX(InputType)))
CmdArgs.push_back("-fobjc-arc-exceptions");
}
// -fobjc-infer-related-result-type is the default, except in the Objective-C
// rewriter.
if (rewriteKind != RK_None)
CmdArgs.push_back("-fno-objc-infer-related-result-type");
// Handle -fobjc-gc and -fobjc-gc-only. They are exclusive, and -fobjc-gc-only
// takes precedence.
const Arg *GCArg = Args.getLastArg(options::OPT_fobjc_gc_only);
if (!GCArg)
GCArg = Args.getLastArg(options::OPT_fobjc_gc);
if (GCArg) {
if (ARC) {
D.Diag(diag::err_drv_objc_gc_arr) << GCArg->getAsString(Args);
} else if (getToolChain().SupportsObjCGC()) {
GCArg->render(Args, CmdArgs);
} else {
// FIXME: We should move this to a hard error.
D.Diag(diag::warn_drv_objc_gc_unsupported) << GCArg->getAsString(Args);
}
}
// Pass down -fobjc-weak or -fno-objc-weak if present.
if (types::isObjC(InputType)) {
auto WeakArg = Args.getLastArg(options::OPT_fobjc_weak,
options::OPT_fno_objc_weak);
if (!WeakArg) {
// nothing to do
} else if (GCArg) {
if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
D.Diag(diag::err_objc_weak_with_gc);
} else if (!objcRuntime.allowsWeak()) {
if (WeakArg->getOption().matches(options::OPT_fobjc_weak))
D.Diag(diag::err_objc_weak_unsupported);
} else {
WeakArg->render(Args, CmdArgs);
}
}
if (Args.hasFlag(options::OPT_fapplication_extension,
options::OPT_fno_application_extension, false))
CmdArgs.push_back("-fapplication-extension");
// Handle GCC-style exception args.
if (!C.getDriver().IsCLMode())
addExceptionArgs(Args, InputType, getToolChain(), KernelOrKext, objcRuntime,
CmdArgs);
if (Args.hasArg(options::OPT_fsjlj_exceptions) ||
getToolChain().UseSjLjExceptions(Args))
CmdArgs.push_back("-fsjlj-exceptions");
// C++ "sane" operator new.
if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
options::OPT_fno_assume_sane_operator_new))
CmdArgs.push_back("-fno-assume-sane-operator-new");
// -fsized-deallocation is off by default, as it is an ABI-breaking change for
// most platforms.
if (Args.hasFlag(options::OPT_fsized_deallocation,
options::OPT_fno_sized_deallocation, false))
CmdArgs.push_back("-fsized-deallocation");
// -faligned-allocation is on by default in C++17 onwards and otherwise off
// by default.
if (Arg *A = Args.getLastArg(options::OPT_faligned_allocation,
options::OPT_fno_aligned_allocation,
options::OPT_faligned_new_EQ)) {
if (A->getOption().matches(options::OPT_fno_aligned_allocation))
CmdArgs.push_back("-fno-aligned-allocation");
else
CmdArgs.push_back("-faligned-allocation");
}
// The default new alignment can be specified using a dedicated option or via
// a GCC-compatible option that also turns on aligned allocation.
if (Arg *A = Args.getLastArg(options::OPT_fnew_alignment_EQ,
options::OPT_faligned_new_EQ))
CmdArgs.push_back(
Args.MakeArgString(Twine("-fnew-alignment=") + A->getValue()));
// -fconstant-cfstrings is default, and may be subject to argument translation
// on Darwin.
if (!Args.hasFlag(options::OPT_fconstant_cfstrings,
options::OPT_fno_constant_cfstrings) ||
!Args.hasFlag(options::OPT_mconstant_cfstrings,
options::OPT_mno_constant_cfstrings))
CmdArgs.push_back("-fno-constant-cfstrings");
// -fshort-wchar default varies depending on platform; only
// pass if specified.
if (Arg *A = Args.getLastArg(options::OPT_fshort_wchar,
options::OPT_fno_short_wchar))
A->render(Args, CmdArgs);
// -fno-pascal-strings is default, only pass non-default.
if (Args.hasFlag(options::OPT_fpascal_strings,
options::OPT_fno_pascal_strings, false))
CmdArgs.push_back("-fpascal-strings");
// Honor -fpack-struct= and -fpack-struct, if given. Note that
// -fno-pack-struct doesn't apply to -fpack-struct=.
if (Arg *A = Args.getLastArg(options::OPT_fpack_struct_EQ)) {
std::string PackStructStr = "-fpack-struct=";
PackStructStr += A->getValue();
CmdArgs.push_back(Args.MakeArgString(PackStructStr));
} else if (Args.hasFlag(options::OPT_fpack_struct,
options::OPT_fno_pack_struct, false)) {
CmdArgs.push_back("-fpack-struct=1");
}
// Handle -fmax-type-align=N and -fno-type-align
bool SkipMaxTypeAlign = Args.hasArg(options::OPT_fno_max_type_align);
if (Arg *A = Args.getLastArg(options::OPT_fmax_type_align_EQ)) {
if (!SkipMaxTypeAlign) {
std::string MaxTypeAlignStr = "-fmax-type-align=";
MaxTypeAlignStr += A->getValue();
CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
}
} else if (getToolChain().getTriple().isOSDarwin()) {
if (!SkipMaxTypeAlign) {
std::string MaxTypeAlignStr = "-fmax-type-align=16";
CmdArgs.push_back(Args.MakeArgString(MaxTypeAlignStr));
}
}
// -fcommon is the default unless compiling kernel code or the target says so
bool NoCommonDefault =
KernelOrKext || isNoCommonDefault(getToolChain().getTriple());
if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common,
!NoCommonDefault))
CmdArgs.push_back("-fno-common");
// -fsigned-bitfields is default, and clang doesn't yet support
// -funsigned-bitfields.
if (!Args.hasFlag(options::OPT_fsigned_bitfields,
options::OPT_funsigned_bitfields))
D.Diag(diag::warn_drv_clang_unsupported)
<< Args.getLastArg(options::OPT_funsigned_bitfields)->getAsString(Args);
// -fsigned-bitfields is default, and clang doesn't support -fno-for-scope.
if (!Args.hasFlag(options::OPT_ffor_scope, options::OPT_fno_for_scope))
D.Diag(diag::err_drv_clang_unsupported)
<< Args.getLastArg(options::OPT_fno_for_scope)->getAsString(Args);
// -finput_charset=UTF-8 is default. Reject others
if (Arg *inputCharset = Args.getLastArg(options::OPT_finput_charset_EQ)) {
StringRef value = inputCharset->getValue();
if (!value.equals_lower("utf-8"))
D.Diag(diag::err_drv_invalid_value) << inputCharset->getAsString(Args)
<< value;
}
// -fexec_charset=UTF-8 is default. Reject others
if (Arg *execCharset = Args.getLastArg(options::OPT_fexec_charset_EQ)) {
StringRef value = execCharset->getValue();
if (!value.equals_lower("utf-8"))
D.Diag(diag::err_drv_invalid_value) << execCharset->getAsString(Args)
<< value;
}
// -fcaret-diagnostics is default.
if (!Args.hasFlag(options::OPT_fcaret_diagnostics,
options::OPT_fno_caret_diagnostics, true))
CmdArgs.push_back("-fno-caret-diagnostics");
// -fdiagnostics-fixit-info is default, only pass non-default.
if (!Args.hasFlag(options::OPT_fdiagnostics_fixit_info,
options::OPT_fno_diagnostics_fixit_info))
CmdArgs.push_back("-fno-diagnostics-fixit-info");
// Enable -fdiagnostics-show-option by default.
if (Args.hasFlag(options::OPT_fdiagnostics_show_option,
options::OPT_fno_diagnostics_show_option))
CmdArgs.push_back("-fdiagnostics-show-option");
if (const Arg *A =
Args.getLastArg(options::OPT_fdiagnostics_show_category_EQ)) {
CmdArgs.push_back("-fdiagnostics-show-category");
CmdArgs.push_back(A->getValue());
}
if (Args.hasFlag(options::OPT_fdiagnostics_show_hotness,
options::OPT_fno_diagnostics_show_hotness, false))
CmdArgs.push_back("-fdiagnostics-show-hotness");
if (const Arg *A = Args.getLastArg(options::OPT_fdiagnostics_format_EQ)) {
CmdArgs.push_back("-fdiagnostics-format");
CmdArgs.push_back(A->getValue());
}
if (Arg *A = Args.getLastArg(
options::OPT_fdiagnostics_show_note_include_stack,
options::OPT_fno_diagnostics_show_note_include_stack)) {
if (A->getOption().matches(
options::OPT_fdiagnostics_show_note_include_stack))
CmdArgs.push_back("-fdiagnostics-show-note-include-stack");
else
CmdArgs.push_back("-fno-diagnostics-show-note-include-stack");
}
// Color diagnostics are parsed by the driver directly from argv
// and later re-parsed to construct this job; claim any possible
// color diagnostic here to avoid warn_drv_unused_argument and
// diagnose bad OPT_fdiagnostics_color_EQ values.
for (Arg *A : Args) {
const Option &O = A->getOption();
if (!O.matches(options::OPT_fcolor_diagnostics) &&
!O.matches(options::OPT_fdiagnostics_color) &&
!O.matches(options::OPT_fno_color_diagnostics) &&
!O.matches(options::OPT_fno_diagnostics_color) &&
!O.matches(options::OPT_fdiagnostics_color_EQ))
continue;
if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
StringRef Value(A->getValue());
if (Value != "always" && Value != "never" && Value != "auto")
getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
<< ("-fdiagnostics-color=" + Value).str();
}
A->claim();
}
if (D.getDiags().getDiagnosticOptions().ShowColors)
CmdArgs.push_back("-fcolor-diagnostics");
if (Args.hasArg(options::OPT_fansi_escape_codes))
CmdArgs.push_back("-fansi-escape-codes");
if (!Args.hasFlag(options::OPT_fshow_source_location,
options::OPT_fno_show_source_location))
CmdArgs.push_back("-fno-show-source-location");
if (Args.hasArg(options::OPT_fdiagnostics_absolute_paths))
CmdArgs.push_back("-fdiagnostics-absolute-paths");
if (!Args.hasFlag(options::OPT_fshow_column, options::OPT_fno_show_column,
true))
CmdArgs.push_back("-fno-show-column");
if (!Args.hasFlag(options::OPT_fspell_checking,
options::OPT_fno_spell_checking))
CmdArgs.push_back("-fno-spell-checking");
// -fno-asm-blocks is default.
if (Args.hasFlag(options::OPT_fasm_blocks, options::OPT_fno_asm_blocks,
false))
CmdArgs.push_back("-fasm-blocks");
// -fgnu-inline-asm is default.
if (!Args.hasFlag(options::OPT_fgnu_inline_asm,
options::OPT_fno_gnu_inline_asm, true))
CmdArgs.push_back("-fno-gnu-inline-asm");
// Enable vectorization per default according to the optimization level
// selected. For optimization levels that want vectorization we use the alias
// option to simplify the hasFlag logic.
bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
OptSpecifier VectorizeAliasOption =
EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,
options::OPT_fno_vectorize, EnableVec))
CmdArgs.push_back("-vectorize-loops");
// -fslp-vectorize is enabled based on the optimization level selected.
bool EnableSLPVec = shouldEnableVectorizerAtOLevel(Args, true);
OptSpecifier SLPVectAliasOption =
EnableSLPVec ? options::OPT_O_Group : options::OPT_fslp_vectorize;
if (Args.hasFlag(options::OPT_fslp_vectorize, SLPVectAliasOption,
options::OPT_fno_slp_vectorize, EnableSLPVec))
CmdArgs.push_back("-vectorize-slp");
// -fno-slp-vectorize-aggressive is default.
if (Args.hasFlag(options::OPT_fslp_vectorize_aggressive,
options::OPT_fno_slp_vectorize_aggressive, false))
CmdArgs.push_back("-vectorize-slp-aggressive");
if (Arg *A = Args.getLastArg(options::OPT_fshow_overloads_EQ))
A->render(Args, CmdArgs);
if (Arg *A = Args.getLastArg(
options::OPT_fsanitize_undefined_strip_path_components_EQ))
A->render(Args, CmdArgs);
// -fdollars-in-identifiers default varies depending on platform and
// language; only pass if specified.
if (Arg *A = Args.getLastArg(options::OPT_fdollars_in_identifiers,
options::OPT_fno_dollars_in_identifiers)) {
if (A->getOption().matches(options::OPT_fdollars_in_identifiers))
CmdArgs.push_back("-fdollars-in-identifiers");
else
CmdArgs.push_back("-fno-dollars-in-identifiers");
}
// -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
// practical purposes.
if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
options::OPT_fno_unit_at_a_time)) {
if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
D.Diag(diag::warn_drv_clang_unsupported) << A->getAsString(Args);
}
if (Args.hasFlag(options::OPT_fapple_pragma_pack,
options::OPT_fno_apple_pragma_pack, false))
CmdArgs.push_back("-fapple-pragma-pack");
// le32-specific flags:
// -fno-math-builtin: clang should not convert math builtins to intrinsics
// by default.
if (getToolChain().getArch() == llvm::Triple::le32) {
CmdArgs.push_back("-fno-math-builtin");
}
if (Args.hasFlag(options::OPT_fsave_optimization_record,
options::OPT_fno_save_optimization_record, false)) {
CmdArgs.push_back("-opt-record-file");
const Arg *A = Args.getLastArg(options::OPT_foptimization_record_file_EQ);
if (A) {
CmdArgs.push_back(A->getValue());
} else {
SmallString<128> F;
if (Output.isFilename() && (Args.hasArg(options::OPT_c) ||
Args.hasArg(options::OPT_S))) {
F = Output.getFilename();
} else {
// Use the compilation directory.
F = llvm::sys::path::stem(Input.getBaseInput());
// If we're compiling for an offload architecture (i.e. a CUDA device),
// we need to make the file name for the device compilation different
// from the host compilation.
if (!JA.isDeviceOffloading(Action::OFK_None) &&
!JA.isDeviceOffloading(Action::OFK_Host)) {
llvm::sys::path::replace_extension(F, "");
F += JA.getOffloadingFileNamePrefix(Triple.normalize());
F += "-";
F += JA.getOffloadingArch();
}
}
llvm::sys::path::replace_extension(F, "opt.yaml");
CmdArgs.push_back(Args.MakeArgString(F));
}
}
// Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
//
// FIXME: Now that PR4941 has been fixed this can be enabled.
#if 0
if (getToolChain().getTriple().isOSDarwin() &&
(getToolChain().getArch() == llvm::Triple::arm ||
getToolChain().getArch() == llvm::Triple::thumb)) {
if (!Args.hasArg(options::OPT_fbuiltin_strcat))
CmdArgs.push_back("-fno-builtin-strcat");
if (!Args.hasArg(options::OPT_fbuiltin_strcpy))
CmdArgs.push_back("-fno-builtin-strcpy");
}
#endif
// Enable rewrite includes if the user's asked for it or if we're generating
// diagnostics.
// TODO: Once -module-dependency-dir works with -frewrite-includes it'd be
// nice to enable this when doing a crashdump for modules as well.
if (Args.hasFlag(options::OPT_frewrite_includes,
options::OPT_fno_rewrite_includes, false) ||
(C.isForDiagnostics() && !HaveAnyModules))
CmdArgs.push_back("-frewrite-includes");
// Only allow -traditional or -traditional-cpp outside in preprocessing modes.
if (Arg *A = Args.getLastArg(options::OPT_traditional,
options::OPT_traditional_cpp)) {
if (isa<PreprocessJobAction>(JA))
CmdArgs.push_back("-traditional-cpp");
else
D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
}
Args.AddLastArg(CmdArgs, options::OPT_dM);
Args.AddLastArg(CmdArgs, options::OPT_dD);
// Handle serialized diagnostics.
if (Arg *A = Args.getLastArg(options::OPT__serialize_diags)) {
CmdArgs.push_back("-serialize-diagnostic-file");
CmdArgs.push_back(Args.MakeArgString(A->getValue()));
}
if (Args.hasArg(options::OPT_fretain_comments_from_system_headers))
CmdArgs.push_back("-fretain-comments-from-system-headers");
// Forward -fcomment-block-commands to -cc1.
Args.AddAllArgs(CmdArgs, options::OPT_fcomment_block_commands);
// Forward -fparse-all-comments to -cc1.
Args.AddAllArgs(CmdArgs, options::OPT_fparse_all_comments);
// Turn -fplugin=name.so into -load name.so
for (const Arg *A : Args.filtered(options::OPT_fplugin_EQ)) {
CmdArgs.push_back("-load");
CmdArgs.push_back(A->getValue());
A->claim();
}
// Setup statistics file output.
if (const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ)) {
StringRef SaveStats = A->getValue();
SmallString<128> StatsFile;
bool DoSaveStats = false;
if (SaveStats == "obj") {
if (Output.isFilename()) {
StatsFile.assign(Output.getFilename());
llvm::sys::path::remove_filename(StatsFile);
}
DoSaveStats = true;
} else if (SaveStats == "cwd") {
DoSaveStats = true;
} else {
D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
}
if (DoSaveStats) {
StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
llvm::sys::path::append(StatsFile, BaseName);
llvm::sys::path::replace_extension(StatsFile, "stats");
CmdArgs.push_back(Args.MakeArgString(Twine("-stats-file=") +
StatsFile));
}
}
// Forward -Xclang arguments to -cc1, and -mllvm arguments to the LLVM option
// parser.
Args.AddAllArgValues(CmdArgs, options::OPT_Xclang);
for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
A->claim();
// We translate this by hand to the -cc1 argument, since nightly test uses
// it and developers have been trained to spell it with -mllvm.
if (StringRef(A->getValue(0)) == "-disable-llvm-optzns") {
CmdArgs.push_back("-disable-llvm-optzns");
} else
A->render(Args, CmdArgs);
}
// With -save-temps, we want to save the unoptimized bitcode output from the
// CompileJobAction, use -disable-llvm-passes to get pristine IR generated
// by the frontend.
// When -fembed-bitcode is enabled, optimized bitcode is emitted because it
// has slightly different breakdown between stages.
// FIXME: -fembed-bitcode -save-temps will save optimized bitcode instead of
// pristine IR generated by the frontend. Ideally, a new compile action should
// be added so both IR can be captured.
if (C.getDriver().isSaveTempsEnabled() &&
!C.getDriver().embedBitcodeEnabled() && isa<CompileJobAction>(JA))
CmdArgs.push_back("-disable-llvm-passes");
if (Output.getType() == types::TY_Dependencies) {
// Handled with other dependency code.
} else if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
addDashXForInput(Args, Input, CmdArgs);
if (Input.isFilename())
CmdArgs.push_back(Input.getFilename());
else
Input.getInputArg().renderAsInput(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_undef);
const char *Exec = getToolChain().getDriver().getClangProgramPath();
// Optionally embed the -cc1 level arguments into the debug info, for build
// analysis.
if (getToolChain().UseDwarfDebugFlags()) {
ArgStringList OriginalArgs;
for (const auto &Arg : Args)
Arg->render(Args, OriginalArgs);
SmallString<256> Flags;
Flags += Exec;
for (const char *OriginalArg : OriginalArgs) {
SmallString<128> EscapedArg;
EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
Flags += " ";
Flags += EscapedArg;
}
CmdArgs.push_back("-dwarf-debug-flags");
CmdArgs.push_back(Args.MakeArgString(Flags));
}
// Add the split debug info name to the command lines here so we
// can propagate it to the backend.
bool SplitDwarf = SplitDwarfArg && getToolChain().getTriple().isOSLinux() &&
(isa<AssembleJobAction>(JA) || isa<CompileJobAction>(JA) ||
isa<BackendJobAction>(JA));
const char *SplitDwarfOut;
if (SplitDwarf) {
CmdArgs.push_back("-split-dwarf-file");
SplitDwarfOut = SplitDebugName(Args, Input);
CmdArgs.push_back(SplitDwarfOut);
}
// Host-side cuda compilation receives device-side outputs as Inputs[1...].
// Include them with -fcuda-include-gpubinary.
if (IsCuda && Inputs.size() > 1)
for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
CmdArgs.push_back("-fcuda-include-gpubinary");
CmdArgs.push_back(I->getFilename());
}
bool WholeProgramVTables =
Args.hasFlag(options::OPT_fwhole_program_vtables,
options::OPT_fno_whole_program_vtables, false);
if (WholeProgramVTables) {
if (!D.isUsingLTO())
D.Diag(diag::err_drv_argument_only_allowed_with)
<< "-fwhole-program-vtables"
<< "-flto";
CmdArgs.push_back("-fwhole-program-vtables");
}
// Finally add the compile command to the compilation.
if (Args.hasArg(options::OPT__SLASH_fallback) &&
Output.getType() == types::TY_Object &&
(InputType == types::TY_C || InputType == types::TY_CXX)) {
auto CLCommand =
getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);
C.addCommand(llvm::make_unique<FallbackCommand>(
JA, *this, Exec, CmdArgs, Inputs, std::move(CLCommand)));
} else if (Args.hasArg(options::OPT__SLASH_fallback) &&
isa<PrecompileJobAction>(JA)) {
// In /fallback builds, run the main compilation even if the pch generation
// fails, so that the main compilation's fallback to cl.exe runs.
C.addCommand(llvm::make_unique<ForceSuccessCommand>(JA, *this, Exec,
CmdArgs, Inputs));
} else {
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
// Handle the debug info splitting at object creation time if we're
// creating an object.
// TODO: Currently only works on linux with newer objcopy.
if (SplitDwarf && Output.getType() == types::TY_Object)
SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, SplitDwarfOut);
if (Arg *A = Args.getLastArg(options::OPT_pg))
if (Args.hasArg(options::OPT_fomit_frame_pointer))
D.Diag(diag::err_drv_argument_not_allowed_with) << "-fomit-frame-pointer"
<< A->getAsString(Args);
// Claim some arguments which clang supports automatically.
// -fpch-preprocess is used with gcc to add a special marker in the output to
// include the PCH file. Clang's PTH solution is completely transparent, so we
// do not need to deal with it at all.
Args.ClaimAllArgs(options::OPT_fpch_preprocess);
// Claim some arguments which clang doesn't support, but we don't
// care to warn the user about.
Args.ClaimAllArgs(options::OPT_clang_ignored_f_Group);
Args.ClaimAllArgs(options::OPT_clang_ignored_m_Group);
// Disable warnings for clang -E -emit-llvm foo.c
Args.ClaimAllArgs(options::OPT_emit_llvm);
}
/// Add options related to the Objective-C runtime/ABI.
///
/// Returns true if the runtime is non-fragile.
ObjCRuntime Clang::AddObjCRuntimeArgs(const ArgList &args,
ArgStringList &cmdArgs,
RewriteKind rewriteKind) const {
// Look for the controlling runtime option.
Arg *runtimeArg =
args.getLastArg(options::OPT_fnext_runtime, options::OPT_fgnu_runtime,
options::OPT_fobjc_runtime_EQ);
// Just forward -fobjc-runtime= to the frontend. This supercedes
// options about fragility.
if (runtimeArg &&
runtimeArg->getOption().matches(options::OPT_fobjc_runtime_EQ)) {
ObjCRuntime runtime;
StringRef value = runtimeArg->getValue();
if (runtime.tryParse(value)) {
getToolChain().getDriver().Diag(diag::err_drv_unknown_objc_runtime)
<< value;
}
runtimeArg->render(args, cmdArgs);
return runtime;
}
// Otherwise, we'll need the ABI "version". Version numbers are
// slightly confusing for historical reasons:
// 1 - Traditional "fragile" ABI
// 2 - Non-fragile ABI, version 1
// 3 - Non-fragile ABI, version 2
unsigned objcABIVersion = 1;
// If -fobjc-abi-version= is present, use that to set the version.
if (Arg *abiArg = args.getLastArg(options::OPT_fobjc_abi_version_EQ)) {
StringRef value = abiArg->getValue();
if (value == "1")
objcABIVersion = 1;
else if (value == "2")
objcABIVersion = 2;
else if (value == "3")
objcABIVersion = 3;
else
getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported) << value;
} else {
// Otherwise, determine if we are using the non-fragile ABI.
bool nonFragileABIIsDefault =
(rewriteKind == RK_NonFragile ||
(rewriteKind == RK_None &&
getToolChain().IsObjCNonFragileABIDefault()));
if (args.hasFlag(options::OPT_fobjc_nonfragile_abi,
options::OPT_fno_objc_nonfragile_abi,
nonFragileABIIsDefault)) {
// Determine the non-fragile ABI version to use.
#ifdef DISABLE_DEFAULT_NONFRAGILEABI_TWO
unsigned nonFragileABIVersion = 1;
#else
unsigned nonFragileABIVersion = 2;
#endif
if (Arg *abiArg =
args.getLastArg(options::OPT_fobjc_nonfragile_abi_version_EQ)) {
StringRef value = abiArg->getValue();
if (value == "1")
nonFragileABIVersion = 1;
else if (value == "2")
nonFragileABIVersion = 2;
else
getToolChain().getDriver().Diag(diag::err_drv_clang_unsupported)
<< value;
}
objcABIVersion = 1 + nonFragileABIVersion;
} else {
objcABIVersion = 1;
}
}
// We don't actually care about the ABI version other than whether
// it's non-fragile.
bool isNonFragile = objcABIVersion != 1;
// If we have no runtime argument, ask the toolchain for its default runtime.
// However, the rewriter only really supports the Mac runtime, so assume that.
ObjCRuntime runtime;
if (!runtimeArg) {
switch (rewriteKind) {
case RK_None:
runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
break;
case RK_Fragile:
runtime = ObjCRuntime(ObjCRuntime::FragileMacOSX, VersionTuple());
break;
case RK_NonFragile:
runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
break;
}
// -fnext-runtime
} else if (runtimeArg->getOption().matches(options::OPT_fnext_runtime)) {
// On Darwin, make this use the default behavior for the toolchain.
if (getToolChain().getTriple().isOSDarwin()) {
runtime = getToolChain().getDefaultObjCRuntime(isNonFragile);
// Otherwise, build for a generic macosx port.
} else {
runtime = ObjCRuntime(ObjCRuntime::MacOSX, VersionTuple());
}
// -fgnu-runtime
} else {
assert(runtimeArg->getOption().matches(options::OPT_fgnu_runtime));
// Legacy behaviour is to target the gnustep runtime if we are in
// non-fragile mode or the GCC runtime in fragile mode.
if (isNonFragile)
runtime = ObjCRuntime(ObjCRuntime::GNUstep, VersionTuple(1, 6));
else
runtime = ObjCRuntime(ObjCRuntime::GCC, VersionTuple());
}
cmdArgs.push_back(
args.MakeArgString("-fobjc-runtime=" + runtime.getAsString()));
return runtime;
}
static bool maybeConsumeDash(const std::string &EH, size_t &I) {
bool HaveDash = (I + 1 < EH.size() && EH[I + 1] == '-');
I += HaveDash;
return !HaveDash;
}
namespace {
struct EHFlags {
bool Synch = false;
bool Asynch = false;
bool NoUnwindC = false;
};
} // end anonymous namespace
/// /EH controls whether to run destructor cleanups when exceptions are
/// thrown. There are three modifiers:
/// - s: Cleanup after "synchronous" exceptions, aka C++ exceptions.
/// - a: Cleanup after "asynchronous" exceptions, aka structured exceptions.
/// The 'a' modifier is unimplemented and fundamentally hard in LLVM IR.
/// - c: Assume that extern "C" functions are implicitly nounwind.
/// The default is /EHs-c-, meaning cleanups are disabled.
static EHFlags parseClangCLEHFlags(const Driver &D, const ArgList &Args) {
EHFlags EH;
std::vector<std::string> EHArgs =
Args.getAllArgValues(options::OPT__SLASH_EH);
for (auto EHVal : EHArgs) {
for (size_t I = 0, E = EHVal.size(); I != E; ++I) {
switch (EHVal[I]) {
case 'a':
EH.Asynch = maybeConsumeDash(EHVal, I);
if (EH.Asynch)
EH.Synch = false;
continue;
case 'c':
EH.NoUnwindC = maybeConsumeDash(EHVal, I);
continue;
case 's':
EH.Synch = maybeConsumeDash(EHVal, I);
if (EH.Synch)
EH.Asynch = false;
continue;
default:
break;
}
D.Diag(clang::diag::err_drv_invalid_value) << "/EH" << EHVal;
break;
}
}
// The /GX, /GX- flags are only processed if there are not /EH flags.
// The default is that /GX is not specified.
if (EHArgs.empty() &&
Args.hasFlag(options::OPT__SLASH_GX, options::OPT__SLASH_GX_,
/*default=*/false)) {
EH.Synch = true;
EH.NoUnwindC = true;
}
return EH;
}
void Clang::AddClangCLArgs(const ArgList &Args, types::ID InputType,
ArgStringList &CmdArgs,
codegenoptions::DebugInfoKind *DebugInfoKind,
bool *EmitCodeView) const {
unsigned RTOptionID = options::OPT__SLASH_MT;
if (Args.hasArg(options::OPT__SLASH_LDd))
// The /LDd option implies /MTd. The dependent lib part can be overridden,
// but defining _DEBUG is sticky.
RTOptionID = options::OPT__SLASH_MTd;
if (Arg *A = Args.getLastArg(options::OPT__SLASH_M_Group))
RTOptionID = A->getOption().getID();
StringRef FlagForCRT;
switch (RTOptionID) {
case options::OPT__SLASH_MD:
if (Args.hasArg(options::OPT__SLASH_LDd))
CmdArgs.push_back("-D_DEBUG");
CmdArgs.push_back("-D_MT");
CmdArgs.push_back("-D_DLL");
FlagForCRT = "--dependent-lib=msvcrt";
break;
case options::OPT__SLASH_MDd:
CmdArgs.push_back("-D_DEBUG");
CmdArgs.push_back("-D_MT");
CmdArgs.push_back("-D_DLL");
FlagForCRT = "--dependent-lib=msvcrtd";
break;
case options::OPT__SLASH_MT:
if (Args.hasArg(options::OPT__SLASH_LDd))
CmdArgs.push_back("-D_DEBUG");
CmdArgs.push_back("-D_MT");
CmdArgs.push_back("-flto-visibility-public-std");
FlagForCRT = "--dependent-lib=libcmt";
break;
case options::OPT__SLASH_MTd:
CmdArgs.push_back("-D_DEBUG");
CmdArgs.push_back("-D_MT");
CmdArgs.push_back("-flto-visibility-public-std");
FlagForCRT = "--dependent-lib=libcmtd";
break;
default:
llvm_unreachable("Unexpected option ID.");
}
if (Args.hasArg(options::OPT__SLASH_Zl)) {
CmdArgs.push_back("-D_VC_NODEFAULTLIB");
} else {
CmdArgs.push_back(FlagForCRT.data());
// This provides POSIX compatibility (maps 'open' to '_open'), which most
// users want. The /Za flag to cl.exe turns this off, but it's not
// implemented in clang.
CmdArgs.push_back("--dependent-lib=oldnames");
}
// Both /showIncludes and /E (and /EP) write to stdout. Allowing both
// would produce interleaved output, so ignore /showIncludes in such cases.
if (!Args.hasArg(options::OPT_E) && !Args.hasArg(options::OPT__SLASH_EP))
if (Arg *A = Args.getLastArg(options::OPT_show_includes))
A->render(Args, CmdArgs);
// This controls whether or not we emit RTTI data for polymorphic types.
if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
/*default=*/false))
CmdArgs.push_back("-fno-rtti-data");
// This controls whether or not we emit stack-protector instrumentation.
// In MSVC, Buffer Security Check (/GS) is on by default.
if (Args.hasFlag(options::OPT__SLASH_GS, options::OPT__SLASH_GS_,
/*default=*/true)) {
CmdArgs.push_back("-stack-protector");
CmdArgs.push_back(Args.MakeArgString(Twine(LangOptions::SSPStrong)));
}
// Emit CodeView if -Z7, -Zd, or -gline-tables-only are present.
if (Arg *DebugInfoArg =
Args.getLastArg(options::OPT__SLASH_Z7, options::OPT__SLASH_Zd,
options::OPT_gline_tables_only)) {
*EmitCodeView = true;
if (DebugInfoArg->getOption().matches(options::OPT__SLASH_Z7))
*DebugInfoKind = codegenoptions::LimitedDebugInfo;
else
*DebugInfoKind = codegenoptions::DebugLineTablesOnly;
CmdArgs.push_back("-gcodeview");
} else {
*EmitCodeView = false;
}
const Driver &D = getToolChain().getDriver();
EHFlags EH = parseClangCLEHFlags(D, Args);
if (EH.Synch || EH.Asynch) {
if (types::isCXX(InputType))
CmdArgs.push_back("-fcxx-exceptions");
CmdArgs.push_back("-fexceptions");
}
if (types::isCXX(InputType) && EH.Synch && EH.NoUnwindC)
CmdArgs.push_back("-fexternc-nounwind");
// /EP should expand to -E -P.
if (Args.hasArg(options::OPT__SLASH_EP)) {
CmdArgs.push_back("-E");
CmdArgs.push_back("-P");
}
unsigned VolatileOptionID;
if (getToolChain().getArch() == llvm::Triple::x86_64 ||
getToolChain().getArch() == llvm::Triple::x86)
VolatileOptionID = options::OPT__SLASH_volatile_ms;
else
VolatileOptionID = options::OPT__SLASH_volatile_iso;
if (Arg *A = Args.getLastArg(options::OPT__SLASH_volatile_Group))
VolatileOptionID = A->getOption().getID();
if (VolatileOptionID == options::OPT__SLASH_volatile_ms)
CmdArgs.push_back("-fms-volatile");
Arg *MostGeneralArg = Args.getLastArg(options::OPT__SLASH_vmg);
Arg *BestCaseArg = Args.getLastArg(options::OPT__SLASH_vmb);
if (MostGeneralArg && BestCaseArg)
D.Diag(clang::diag::err_drv_argument_not_allowed_with)
<< MostGeneralArg->getAsString(Args) << BestCaseArg->getAsString(Args);
if (MostGeneralArg) {
Arg *SingleArg = Args.getLastArg(options::OPT__SLASH_vms);
Arg *MultipleArg = Args.getLastArg(options::OPT__SLASH_vmm);
Arg *VirtualArg = Args.getLastArg(options::OPT__SLASH_vmv);
Arg *FirstConflict = SingleArg ? SingleArg : MultipleArg;
Arg *SecondConflict = VirtualArg ? VirtualArg : MultipleArg;
if (FirstConflict && SecondConflict && FirstConflict != SecondConflict)
D.Diag(clang::diag::err_drv_argument_not_allowed_with)
<< FirstConflict->getAsString(Args)
<< SecondConflict->getAsString(Args);
if (SingleArg)
CmdArgs.push_back("-fms-memptr-rep=single");
else if (MultipleArg)
CmdArgs.push_back("-fms-memptr-rep=multiple");
else
CmdArgs.push_back("-fms-memptr-rep=virtual");
}
if (Args.getLastArg(options::OPT__SLASH_Gd))
CmdArgs.push_back("-fdefault-calling-conv=cdecl");
else if (Args.getLastArg(options::OPT__SLASH_Gr))
CmdArgs.push_back("-fdefault-calling-conv=fastcall");
else if (Args.getLastArg(options::OPT__SLASH_Gz))
CmdArgs.push_back("-fdefault-calling-conv=stdcall");
else if (Args.getLastArg(options::OPT__SLASH_Gv))
CmdArgs.push_back("-fdefault-calling-conv=vectorcall");
if (Arg *A = Args.getLastArg(options::OPT_vtordisp_mode_EQ))
A->render(Args, CmdArgs);
if (!Args.hasArg(options::OPT_fdiagnostics_format_EQ)) {
CmdArgs.push_back("-fdiagnostics-format");
if (Args.hasArg(options::OPT__SLASH_fallback))
CmdArgs.push_back("msvc-fallback");
else
CmdArgs.push_back("msvc");
}
}
visualstudio::Compiler *Clang::getCLFallback() const {
if (!CLFallback)
CLFallback.reset(new visualstudio::Compiler(getToolChain()));
return CLFallback.get();
}
void ClangAs::AddMIPSTargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
StringRef CPUName;
StringRef ABIName;
const llvm::Triple &Triple = getToolChain().getTriple();
mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
CmdArgs.push_back("-target-abi");
CmdArgs.push_back(ABIName.data());
}
void ClangAs::AddX86TargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
StringRef Value = A->getValue();
if (Value == "intel" || Value == "att") {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
} else {
getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
<< A->getOption().getName() << Value;
}
}
}
void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1 && "Unexpected number of inputs.");
const InputInfo &Input = Inputs[0];
const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
const std::string &TripleStr = Triple.getTriple();
// Don't warn about "clang -w -c foo.s"
Args.ClaimAllArgs(options::OPT_w);
// and "clang -emit-llvm -c foo.s"
Args.ClaimAllArgs(options::OPT_emit_llvm);
claimNoWarnArgs(Args);
// Invoke ourselves in -cc1as mode.
//
// FIXME: Implement custom jobs for internal actions.
CmdArgs.push_back("-cc1as");
// Add the "effective" target triple.
CmdArgs.push_back("-triple");
CmdArgs.push_back(Args.MakeArgString(TripleStr));
// Set the output mode, we currently only expect to be used as a real
// assembler.
CmdArgs.push_back("-filetype");
CmdArgs.push_back("obj");
// Set the main file name, so that debug info works even with
// -save-temps or preprocessed assembly.
CmdArgs.push_back("-main-file-name");
CmdArgs.push_back(Clang::getBaseInputName(Args, Input));
// Add the target cpu
std::string CPU = getCPUName(Args, Triple, /*FromAs*/ true);
if (!CPU.empty()) {
CmdArgs.push_back("-target-cpu");
CmdArgs.push_back(Args.MakeArgString(CPU));
}
// Add the target features
getTargetFeatures(getToolChain(), Triple, Args, CmdArgs, true);
// Ignore explicit -force_cpusubtype_ALL option.
(void)Args.hasArg(options::OPT_force__cpusubtype__ALL);
// Pass along any -I options so we get proper .include search paths.
Args.AddAllArgs(CmdArgs, options::OPT_I_Group);
// Determine the original source input.
const Action *SourceAction = &JA;
while (SourceAction->getKind() != Action::InputClass) {
assert(!SourceAction->getInputs().empty() && "unexpected root action!");
SourceAction = SourceAction->getInputs()[0];
}
// Forward -g and handle debug info related flags, assuming we are dealing
// with an actual assembly file.
bool WantDebug = false;
unsigned DwarfVersion = 0;
Args.ClaimAllArgs(options::OPT_g_Group);
if (Arg *A = Args.getLastArg(options::OPT_g_Group)) {
WantDebug = !A->getOption().matches(options::OPT_g0) &&
!A->getOption().matches(options::OPT_ggdb0);
if (WantDebug)
DwarfVersion = DwarfVersionNum(A->getSpelling());
}
if (DwarfVersion == 0)
DwarfVersion = getToolChain().GetDefaultDwarfVersion();
codegenoptions::DebugInfoKind DebugInfoKind = codegenoptions::NoDebugInfo;
if (SourceAction->getType() == types::TY_Asm ||
SourceAction->getType() == types::TY_PP_Asm) {
// You might think that it would be ok to set DebugInfoKind outside of
// the guard for source type, however there is a test which asserts
// that some assembler invocation receives no -debug-info-kind,
// and it's not clear whether that test is just overly restrictive.
DebugInfoKind = (WantDebug ? codegenoptions::LimitedDebugInfo
: codegenoptions::NoDebugInfo);
// Add the -fdebug-compilation-dir flag if needed.
addDebugCompDirArg(Args, CmdArgs);
// Set the AT_producer to the clang version when using the integrated
// assembler on assembly source files.
CmdArgs.push_back("-dwarf-debug-producer");
CmdArgs.push_back(Args.MakeArgString(getClangFullVersion()));
// And pass along -I options
Args.AddAllArgs(CmdArgs, options::OPT_I);
}
RenderDebugEnablingArgs(Args, CmdArgs, DebugInfoKind, DwarfVersion,
llvm::DebuggerKind::Default);
// Handle -fPIC et al -- the relocation-model affects the assembler
// for some targets.
llvm::Reloc::Model RelocationModel;
unsigned PICLevel;
bool IsPIE;
std::tie(RelocationModel, PICLevel, IsPIE) =
ParsePICArgs(getToolChain(), Triple, Args);
const char *RMName = RelocationModelName(RelocationModel);
if (RMName) {
CmdArgs.push_back("-mrelocation-model");
CmdArgs.push_back(RMName);
}
// Optionally embed the -cc1as level arguments into the debug info, for build
// analysis.
if (getToolChain().UseDwarfDebugFlags()) {
ArgStringList OriginalArgs;
for (const auto &Arg : Args)
Arg->render(Args, OriginalArgs);
SmallString<256> Flags;
const char *Exec = getToolChain().getDriver().getClangProgramPath();
Flags += Exec;
for (const char *OriginalArg : OriginalArgs) {
SmallString<128> EscapedArg;
EscapeSpacesAndBackslashes(OriginalArg, EscapedArg);
Flags += " ";
Flags += EscapedArg;
}
CmdArgs.push_back("-dwarf-debug-flags");
CmdArgs.push_back(Args.MakeArgString(Flags));
}
// FIXME: Add -static support, once we have it.
// Add target specific flags.
switch (getToolChain().getArch()) {
default:
break;
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
AddMIPSTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
AddX86TargetArgs(Args, CmdArgs);
break;
}
// Consume all the warning flags. Usually this would be handled more
// gracefully by -cc1 (warning about unknown warning flags, etc) but -cc1as
// doesn't handle that so rather than warning about unused flags that are
// actually used, we'll lie by omission instead.
// FIXME: Stop lying and consume only the appropriate driver flags
Args.ClaimAllArgs(options::OPT_W_Group);
CollectArgsForIntegratedAssembler(C, Args, CmdArgs,
getToolChain().getDriver());
Args.AddAllArgs(CmdArgs, options::OPT_mllvm);
assert(Output.isFilename() && "Unexpected lipo output.");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
const char *Exec = getToolChain().getDriver().getClangProgramPath();
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
// Handle the debug info splitting at object creation time if we're
// creating an object.
// TODO: Currently only works on linux with newer objcopy.
if (Args.hasArg(options::OPT_gsplit_dwarf) &&
getToolChain().getTriple().isOSLinux())
SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
SplitDebugName(Args, Input));
}
void GnuTool::anchor() {}
void gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs, const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
for (const auto &A : Args) {
if (forwardToGCC(A->getOption())) {
// It is unfortunate that we have to claim here, as this means
// we will basically never report anything interesting for
// platforms using a generic gcc, even if we are just using gcc
// to get to the assembler.
A->claim();
// Don't forward any -g arguments to assembly steps.
if (isa<AssembleJobAction>(JA) &&
A->getOption().matches(options::OPT_g_Group))
continue;
// Don't forward any -W arguments to assembly and link steps.
if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
A->getOption().matches(options::OPT_W_Group))
continue;
A->render(Args, CmdArgs);
}
}
RenderExtraToolArgs(JA, CmdArgs);
// If using a driver driver, force the arch.
if (getToolChain().getTriple().isOSDarwin()) {
CmdArgs.push_back("-arch");
CmdArgs.push_back(
Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
}
// Try to force gcc to match the tool chain we want, if we recognize
// the arch.
//
// FIXME: The triple class should directly provide the information we want
// here.
switch (getToolChain().getArch()) {
default:
break;
case llvm::Triple::x86:
case llvm::Triple::ppc:
CmdArgs.push_back("-m32");
break;
case llvm::Triple::x86_64:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
CmdArgs.push_back("-m64");
break;
case llvm::Triple::sparcel:
CmdArgs.push_back("-EL");
break;
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Unexpected output");
CmdArgs.push_back("-fsyntax-only");
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
// Only pass -x if gcc will understand it; otherwise hope gcc
// understands the suffix correctly. The main use case this would go
// wrong in is for linker inputs if they happened to have an odd
// suffix; really the only way to get this to happen is a command
// like '-x foobar a.c' which will treat a.c like a linker input.
//
// FIXME: For the linker case specifically, can we safely convert
// inputs into '-Wl,' options?
for (const auto &II : Inputs) {
// Don't try to pass LLVM or AST inputs to a generic gcc.
if (types::isLLVMIR(II.getType()))
D.Diag(diag::err_drv_no_linker_llvm_support)
<< getToolChain().getTripleString();
else if (II.getType() == types::TY_AST)
D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
else if (II.getType() == types::TY_ModuleFile)
D.Diag(diag::err_drv_no_module_support)
<< getToolChain().getTripleString();
if (types::canTypeBeUserSpecified(II.getType())) {
CmdArgs.push_back("-x");
CmdArgs.push_back(types::getTypeName(II.getType()));
}
if (II.isFilename())
CmdArgs.push_back(II.getFilename());
else {
const Arg &A = II.getInputArg();
// Reverse translate some rewritten options.
if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
CmdArgs.push_back("-lstdc++");
continue;
}
// Don't render as input, we need gcc to do the translations.
A.render(Args, CmdArgs);
}
}
const std::string &customGCCName = D.getCCCGenericGCCName();
const char *GCCName;
if (!customGCCName.empty())
GCCName = customGCCName.c_str();
else if (D.CCCIsCXX()) {
GCCName = "g++";
} else
GCCName = "gcc";
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void gcc::Preprocessor::RenderExtraToolArgs(const JobAction &JA,
ArgStringList &CmdArgs) const {
CmdArgs.push_back("-E");
}
void gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
ArgStringList &CmdArgs) const {
const Driver &D = getToolChain().getDriver();
switch (JA.getType()) {
// If -flto, etc. are present then make sure not to force assembly output.
case types::TY_LLVM_IR:
case types::TY_LTO_IR:
case types::TY_LLVM_BC:
case types::TY_LTO_BC:
CmdArgs.push_back("-c");
break;
// We assume we've got an "integrated" assembler in that gcc will produce an
// object file itself.
case types::TY_Object:
CmdArgs.push_back("-c");
break;
case types::TY_PP_Asm:
CmdArgs.push_back("-S");
break;
case types::TY_Nothing:
CmdArgs.push_back("-fsyntax-only");
break;
default:
D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
}
}
void gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
ArgStringList &CmdArgs) const {
// The types are (hopefully) good enough.
}
// Hexagon tools start.
void hexagon::Assembler::RenderExtraToolArgs(const JobAction &JA,
ArgStringList &CmdArgs) const {
}
void hexagon::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain());
const Driver &D = HTC.getDriver();
ArgStringList CmdArgs;
std::string MArchString = "-march=hexagon";
CmdArgs.push_back(Args.MakeArgString(MArchString));
RenderExtraToolArgs(JA, CmdArgs);
std::string AsName = "hexagon-llvm-mc";
std::string MCpuString = "-mcpu=hexagon" +
toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
CmdArgs.push_back("-filetype=obj");
CmdArgs.push_back(Args.MakeArgString(MCpuString));
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Unexpected output");
CmdArgs.push_back("-fsyntax-only");
}
if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
std::string N = llvm::utostr(G.getValue());
CmdArgs.push_back(Args.MakeArgString(std::string("-gpsize=") + N));
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
// Only pass -x if gcc will understand it; otherwise hope gcc
// understands the suffix correctly. The main use case this would go
// wrong in is for linker inputs if they happened to have an odd
// suffix; really the only way to get this to happen is a command
// like '-x foobar a.c' which will treat a.c like a linker input.
//
// FIXME: For the linker case specifically, can we safely convert
// inputs into '-Wl,' options?
for (const auto &II : Inputs) {
// Don't try to pass LLVM or AST inputs to a generic gcc.
if (types::isLLVMIR(II.getType()))
D.Diag(clang::diag::err_drv_no_linker_llvm_support)
<< HTC.getTripleString();
else if (II.getType() == types::TY_AST)
D.Diag(clang::diag::err_drv_no_ast_support)
<< HTC.getTripleString();
else if (II.getType() == types::TY_ModuleFile)
D.Diag(diag::err_drv_no_module_support)
<< HTC.getTripleString();
if (II.isFilename())
CmdArgs.push_back(II.getFilename());
else
// Don't render as input, we need gcc to do the translations.
// FIXME: What is this?
II.getInputArg().render(Args, CmdArgs);
}
auto *Exec = Args.MakeArgString(HTC.GetProgramPath(AsName.c_str()));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void hexagon::Linker::RenderExtraToolArgs(const JobAction &JA,
ArgStringList &CmdArgs) const {
}
static void
constructHexagonLinkArgs(Compilation &C, const JobAction &JA,
const toolchains::HexagonToolChain &HTC,
const InputInfo &Output, const InputInfoList &Inputs,
const ArgList &Args, ArgStringList &CmdArgs,
const char *LinkingOutput) {
const Driver &D = HTC.getDriver();
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
bool IsStatic = Args.hasArg(options::OPT_static);
bool IsShared = Args.hasArg(options::OPT_shared);
bool IsPIE = Args.hasArg(options::OPT_pie);
bool IncStdLib = !Args.hasArg(options::OPT_nostdlib);
bool IncStartFiles = !Args.hasArg(options::OPT_nostartfiles);
bool IncDefLibs = !Args.hasArg(options::OPT_nodefaultlibs);
bool UseG0 = false;
bool UseShared = IsShared && !IsStatic;
//----------------------------------------------------------------------------
// Silence warnings for various options
//----------------------------------------------------------------------------
Args.ClaimAllArgs(options::OPT_g_Group);
Args.ClaimAllArgs(options::OPT_emit_llvm);
Args.ClaimAllArgs(options::OPT_w); // Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_static_libgcc);
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
if (Args.hasArg(options::OPT_r))
CmdArgs.push_back("-r");
for (const auto &Opt : HTC.ExtraOpts)
CmdArgs.push_back(Opt.c_str());
CmdArgs.push_back("-march=hexagon");
std::string CpuVer =
toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
std::string MCpuString = "-mcpu=hexagon" + CpuVer;
CmdArgs.push_back(Args.MakeArgString(MCpuString));
if (IsShared) {
CmdArgs.push_back("-shared");
// The following should be the default, but doing as hexagon-gcc does.
CmdArgs.push_back("-call_shared");
}
if (IsStatic)
CmdArgs.push_back("-static");
if (IsPIE && !IsShared)
CmdArgs.push_back("-pie");
if (auto G = toolchains::HexagonToolChain::getSmallDataThreshold(Args)) {
std::string N = llvm::utostr(G.getValue());
CmdArgs.push_back(Args.MakeArgString(std::string("-G") + N));
UseG0 = G.getValue() == 0;
}
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
//----------------------------------------------------------------------------
// moslib
//----------------------------------------------------------------------------
std::vector<std::string> OsLibs;
bool HasStandalone = false;
for (const Arg *A : Args.filtered(options::OPT_moslib_EQ)) {
A->claim();
OsLibs.emplace_back(A->getValue());
HasStandalone = HasStandalone || (OsLibs.back() == "standalone");
}
if (OsLibs.empty()) {
OsLibs.push_back("standalone");
HasStandalone = true;
}
//----------------------------------------------------------------------------
// Start Files
//----------------------------------------------------------------------------
const std::string MCpuSuffix = "/" + CpuVer;
const std::string MCpuG0Suffix = MCpuSuffix + "/G0";
const std::string RootDir =
HTC.getHexagonTargetDir(D.InstalledDir, D.PrefixDirs) + "/";
const std::string StartSubDir =
"hexagon/lib" + (UseG0 ? MCpuG0Suffix : MCpuSuffix);
auto Find = [&HTC] (const std::string &RootDir, const std::string &SubDir,
const char *Name) -> std::string {
std::string RelName = SubDir + Name;
std::string P = HTC.GetFilePath(RelName.c_str());
if (llvm::sys::fs::exists(P))
return P;
return RootDir + RelName;
};
if (IncStdLib && IncStartFiles) {
if (!IsShared) {
if (HasStandalone) {
std::string Crt0SA = Find(RootDir, StartSubDir, "/crt0_standalone.o");
CmdArgs.push_back(Args.MakeArgString(Crt0SA));
}
std::string Crt0 = Find(RootDir, StartSubDir, "/crt0.o");
CmdArgs.push_back(Args.MakeArgString(Crt0));
}
std::string Init = UseShared
? Find(RootDir, StartSubDir + "/pic", "/initS.o")
: Find(RootDir, StartSubDir, "/init.o");
CmdArgs.push_back(Args.MakeArgString(Init));
}
//----------------------------------------------------------------------------
// Library Search Paths
//----------------------------------------------------------------------------
const ToolChain::path_list &LibPaths = HTC.getFilePaths();
for (const auto &LibPath : LibPaths)
CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
Args.AddAllArgs(CmdArgs,
{options::OPT_T_Group, options::OPT_e, options::OPT_s,
options::OPT_t, options::OPT_u_Group});
AddLinkerInputs(HTC, Inputs, Args, CmdArgs);
//----------------------------------------------------------------------------
// Libraries
//----------------------------------------------------------------------------
if (IncStdLib && IncDefLibs) {
if (D.CCCIsCXX()) {
HTC.AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
CmdArgs.push_back("--start-group");
if (!IsShared) {
for (const std::string &Lib : OsLibs)
CmdArgs.push_back(Args.MakeArgString("-l" + Lib));
CmdArgs.push_back("-lc");
}
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("--end-group");
}
//----------------------------------------------------------------------------
// End files
//----------------------------------------------------------------------------
if (IncStdLib && IncStartFiles) {
std::string Fini = UseShared
? Find(RootDir, StartSubDir + "/pic", "/finiS.o")
: Find(RootDir, StartSubDir, "/fini.o");
CmdArgs.push_back(Args.MakeArgString(Fini));
}
}
void hexagon::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
auto &HTC = static_cast<const toolchains::HexagonToolChain&>(getToolChain());
ArgStringList CmdArgs;
constructHexagonLinkArgs(C, JA, HTC, Output, Inputs, Args, CmdArgs,
LinkingOutput);
std::string Linker = HTC.GetProgramPath("hexagon-link");
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
CmdArgs, Inputs));
}
// Hexagon tools end.
void amdgpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
std::string Linker = getToolChain().GetProgramPath(getShortName());
ArgStringList CmdArgs;
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
CmdArgs.push_back("-shared");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
CmdArgs, Inputs));
}
// AMDGPU tools end.
wasm::Linker::Linker(const ToolChain &TC)
: GnuTool("wasm::Linker", "lld", TC) {}
bool wasm::Linker::isLinkJob() const {
return true;
}
bool wasm::Linker::hasIntegratedCPP() const {
return false;
}
void wasm::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const ToolChain &ToolChain = getToolChain();
const Driver &D = ToolChain.getDriver();
const char *Linker = Args.MakeArgString(ToolChain.GetLinkerPath());
ArgStringList CmdArgs;
CmdArgs.push_back("-flavor");
CmdArgs.push_back("ld");
// Enable garbage collection of unused input sections by default, since code
// size is of particular importance. This is significantly facilitated by
// the enabling of -ffunction-sections and -fdata-sections in
// Clang::ConstructJob.
if (areOptimizationsEnabled(Args))
CmdArgs.push_back("--gc-sections");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("--strip-all");
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-shared");
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-Bstatic");
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("rcrt1.o")));
else if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
else
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt1.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
}
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (D.CCCIsCXX())
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lcompiler_rt");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
C.addCommand(llvm::make_unique<Command>(JA, *this, Linker, CmdArgs, Inputs));
}
const std::string arm::getARMArch(StringRef Arch, const llvm::Triple &Triple) {
std::string MArch;
if (!Arch.empty())
MArch = Arch;
else
MArch = Triple.getArchName();
MArch = StringRef(MArch).split("+").first.lower();
// Handle -march=native.
if (MArch == "native") {
std::string CPU = llvm::sys::getHostCPUName();
if (CPU != "generic") {
// Translate the native cpu into the architecture suffix for that CPU.
StringRef Suffix = arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
// If there is no valid architecture suffix for this CPU we don't know how
// to handle it, so return no architecture.
if (Suffix.empty())
MArch = "";
else
MArch = std::string("arm") + Suffix.str();
}
}
return MArch;
}
/// Get the (LLVM) name of the minimum ARM CPU for the arch we are targeting.
StringRef arm::getARMCPUForMArch(StringRef Arch, const llvm::Triple &Triple) {
std::string MArch = getARMArch(Arch, Triple);
// getARMCPUForArch defaults to the triple if MArch is empty, but empty MArch
// here means an -march=native that we can't handle, so instead return no CPU.
if (MArch.empty())
return StringRef();
// We need to return an empty string here on invalid MArch values as the
// various places that call this function can't cope with a null result.
return Triple.getARMCPUForArch(MArch);
}
/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
std::string arm::getARMTargetCPU(StringRef CPU, StringRef Arch,
const llvm::Triple &Triple) {
// FIXME: Warn on inconsistent use of -mcpu and -march.
// If we have -mcpu=, use that.
if (!CPU.empty()) {
std::string MCPU = StringRef(CPU).split("+").first.lower();
// Handle -mcpu=native.
if (MCPU == "native")
return llvm::sys::getHostCPUName();
else
return MCPU;
}
return getARMCPUForMArch(Arch, Triple);
}
/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
/// CPU (or Arch, if CPU is generic).
// FIXME: This is redundant with -mcpu, why does LLVM use this.
StringRef arm::getLLVMArchSuffixForARM(StringRef CPU, StringRef Arch,
const llvm::Triple &Triple) {
unsigned ArchKind;
if (CPU == "generic") {
std::string ARMArch = tools::arm::getARMArch(Arch, Triple);
ArchKind = llvm::ARM::parseArch(ARMArch);
if (ArchKind == llvm::ARM::AK_INVALID)
// In case of generic Arch, i.e. "arm",
// extract arch from default cpu of the Triple
ArchKind = llvm::ARM::parseCPUArch(Triple.getARMCPUForArch(ARMArch));
} else {
// FIXME: horrible hack to get around the fact that Cortex-A7 is only an
// armv7k triple if it's actually been specified via "-arch armv7k".
ArchKind = (Arch == "armv7k" || Arch == "thumbv7k")
? (unsigned)llvm::ARM::AK_ARMV7K
: llvm::ARM::parseCPUArch(CPU);
}
if (ArchKind == llvm::ARM::AK_INVALID)
return "";
return llvm::ARM::getSubArch(ArchKind);
}
void arm::appendEBLinkFlags(const ArgList &Args, ArgStringList &CmdArgs,
const llvm::Triple &Triple) {
if (Args.hasArg(options::OPT_r))
return;
// ARMv7 (and later) and ARMv6-M do not support BE-32, so instruct the linker
// to generate BE-8 executables.
if (getARMSubArchVersionNumber(Triple) >= 7 || isARMMProfile(Triple))
CmdArgs.push_back("--be8");
}
mips::NanEncoding mips::getSupportedNanEncoding(StringRef &CPU) {
// Strictly speaking, mips32r2 and mips64r2 are NanLegacy-only since Nan2008
// was first introduced in Release 3. However, other compilers have
// traditionally allowed it for Release 2 so we should do the same.
return (NanEncoding)llvm::StringSwitch<int>(CPU)
.Case("mips1", NanLegacy)
.Case("mips2", NanLegacy)
.Case("mips3", NanLegacy)
.Case("mips4", NanLegacy)
.Case("mips5", NanLegacy)
.Case("mips32", NanLegacy)
.Case("mips32r2", NanLegacy | Nan2008)
.Case("mips32r3", NanLegacy | Nan2008)
.Case("mips32r5", NanLegacy | Nan2008)
.Case("mips32r6", Nan2008)
.Case("mips64", NanLegacy)
.Case("mips64r2", NanLegacy | Nan2008)
.Case("mips64r3", NanLegacy | Nan2008)
.Case("mips64r5", NanLegacy | Nan2008)
.Case("mips64r6", Nan2008)
.Default(NanLegacy);
}
bool mips::hasCompactBranches(StringRef &CPU) {
// mips32r6 and mips64r6 have compact branches.
return llvm::StringSwitch<bool>(CPU)
.Case("mips32r6", true)
.Case("mips64r6", true)
.Default(false);
}
bool mips::hasMipsAbiArg(const ArgList &Args, const char *Value) {
Arg *A = Args.getLastArg(options::OPT_mabi_EQ);
return A && (A->getValue() == StringRef(Value));
}
bool mips::isUCLibc(const ArgList &Args) {
Arg *A = Args.getLastArg(options::OPT_m_libc_Group);
return A && A->getOption().matches(options::OPT_muclibc);
}
bool mips::isNaN2008(const ArgList &Args, const llvm::Triple &Triple) {
if (Arg *NaNArg = Args.getLastArg(options::OPT_mnan_EQ))
return llvm::StringSwitch<bool>(NaNArg->getValue())
.Case("2008", true)
.Case("legacy", false)
.Default(false);
// NaN2008 is the default for MIPS32r6/MIPS64r6.
return llvm::StringSwitch<bool>(getCPUName(Args, Triple))
.Cases("mips32r6", "mips64r6", true)
.Default(false);
return false;
}
bool mips::isFP64ADefault(const llvm::Triple &Triple, StringRef CPUName) {
if (!Triple.isAndroid())
return false;
// Android MIPS32R6 defaults to FP64A.
return llvm::StringSwitch<bool>(CPUName)
.Case("mips32r6", true)
.Default(false);
}
bool mips::isFPXXDefault(const llvm::Triple &Triple, StringRef CPUName,
StringRef ABIName, mips::FloatABI FloatABI) {
if (Triple.getVendor() != llvm::Triple::ImaginationTechnologies &&
Triple.getVendor() != llvm::Triple::MipsTechnologies &&
!Triple.isAndroid())
return false;
if (ABIName != "32")
return false;
// FPXX shouldn't be used if either -msoft-float or -mfloat-abi=soft is
// present.
if (FloatABI == mips::FloatABI::Soft)
return false;
return llvm::StringSwitch<bool>(CPUName)
.Cases("mips2", "mips3", "mips4", "mips5", true)
.Cases("mips32", "mips32r2", "mips32r3", "mips32r5", true)
.Cases("mips64", "mips64r2", "mips64r3", "mips64r5", true)
.Default(false);
}
bool mips::shouldUseFPXX(const ArgList &Args, const llvm::Triple &Triple,
StringRef CPUName, StringRef ABIName,
mips::FloatABI FloatABI) {
bool UseFPXX = isFPXXDefault(Triple, CPUName, ABIName, FloatABI);
// FPXX shouldn't be used if -msingle-float is present.
if (Arg *A = Args.getLastArg(options::OPT_msingle_float,
options::OPT_mdouble_float))
if (A->getOption().matches(options::OPT_msingle_float))
UseFPXX = false;
return UseFPXX;
}
llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
// See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
// archs which Darwin doesn't use.
// The matching this routine does is fairly pointless, since it is neither the
// complete architecture list, nor a reasonable subset. The problem is that
// historically the driver driver accepts this and also ties its -march=
// handling to the architecture name, so we need to be careful before removing
// support for it.
// This code must be kept in sync with Clang's Darwin specific argument
// translation.
return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
.Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
.Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
.Case("ppc64", llvm::Triple::ppc64)
.Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
.Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
llvm::Triple::x86)
.Cases("x86_64", "x86_64h", llvm::Triple::x86_64)
// This is derived from the driver driver.
.Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm)
.Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
.Cases("armv7s", "xscale", llvm::Triple::arm)
.Case("arm64", llvm::Triple::aarch64)
.Case("r600", llvm::Triple::r600)
.Case("amdgcn", llvm::Triple::amdgcn)
.Case("nvptx", llvm::Triple::nvptx)
.Case("nvptx64", llvm::Triple::nvptx64)
.Case("amdil", llvm::Triple::amdil)
.Case("spir", llvm::Triple::spir)
.Default(llvm::Triple::UnknownArch);
}
void darwin::setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str) {
const llvm::Triple::ArchType Arch = getArchTypeForMachOArchName(Str);
unsigned ArchKind = llvm::ARM::parseArch(Str);
T.setArch(Arch);
if (Str == "x86_64h")
T.setArchName(Str);
else if (ArchKind == llvm::ARM::AK_ARMV6M ||
ArchKind == llvm::ARM::AK_ARMV7M ||
ArchKind == llvm::ARM::AK_ARMV7EM) {
T.setOS(llvm::Triple::UnknownOS);
T.setObjectFormat(llvm::Triple::MachO);
}
}
const char *Clang::getBaseInputName(const ArgList &Args,
const InputInfo &Input) {
return Args.MakeArgString(llvm::sys::path::filename(Input.getBaseInput()));
}
const char *Clang::getBaseInputStem(const ArgList &Args,
const InputInfoList &Inputs) {
const char *Str = getBaseInputName(Args, Inputs[0]);
if (const char *End = strrchr(Str, '.'))
return Args.MakeArgString(std::string(Str, End));
return Str;
}
const char *Clang::getDependencyFileName(const ArgList &Args,
const InputInfoList &Inputs) {
// FIXME: Think about this more.
std::string Res;
if (Arg *OutputOpt = Args.getLastArg(options::OPT_o)) {
std::string Str(OutputOpt->getValue());
Res = Str.substr(0, Str.rfind('.'));
} else {
Res = getBaseInputStem(Args, Inputs);
}
return Args.MakeArgString(Res + ".d");
}
void cloudabi::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const ToolChain &ToolChain = getToolChain();
const Driver &D = ToolChain.getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
// CloudABI only supports static linkage.
CmdArgs.push_back("-Bstatic");
CmdArgs.push_back("--no-dynamic-linker");
// Provide PIE linker flags in case PIE is default for the architecture.
if (ToolChain.isPIEDefault()) {
CmdArgs.push_back("-pie");
CmdArgs.push_back("-zrelro");
}
CmdArgs.push_back("--eh-frame-hdr");
CmdArgs.push_back("--gc-sections");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
Args.AddAllArgs(CmdArgs,
{options::OPT_T_Group, options::OPT_e, options::OPT_s,
options::OPT_t, options::OPT_Z_Flag, options::OPT_r});
if (D.isUsingLTO())
AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (D.CCCIsCXX())
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lcompiler_rt");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void darwin::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1 && "Unexpected number of inputs.");
const InputInfo &Input = Inputs[0];
// Determine the original source input.
const Action *SourceAction = &JA;
while (SourceAction->getKind() != Action::InputClass) {
assert(!SourceAction->getInputs().empty() && "unexpected root action!");
SourceAction = SourceAction->getInputs()[0];
}
// If -fno-integrated-as is used add -Q to the darwin assember driver to make
// sure it runs its system assembler not clang's integrated assembler.
// Applicable to darwin11+ and Xcode 4+. darwin<10 lacked integrated-as.
// FIXME: at run-time detect assembler capabilities or rely on version
// information forwarded by -target-assembler-version.
if (Args.hasArg(options::OPT_fno_integrated_as)) {
const llvm::Triple &T(getToolChain().getTriple());
if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))
CmdArgs.push_back("-Q");
}
// Forward -g, assuming we are dealing with an actual assembly file.
if (SourceAction->getType() == types::TY_Asm ||
SourceAction->getType() == types::TY_PP_Asm) {
if (Args.hasArg(options::OPT_gstabs))
CmdArgs.push_back("--gstabs");
else if (Args.hasArg(options::OPT_g_Group))
CmdArgs.push_back("-g");
}
// Derived from asm spec.
AddMachOArch(Args, CmdArgs);
// Use -force_cpusubtype_ALL on x86 by default.
if (getToolChain().getArch() == llvm::Triple::x86 ||
getToolChain().getArch() == llvm::Triple::x86_64 ||
Args.hasArg(options::OPT_force__cpusubtype__ALL))
CmdArgs.push_back("-force_cpusubtype_ALL");
if (getToolChain().getArch() != llvm::Triple::x86_64 &&
(((Args.hasArg(options::OPT_mkernel) ||
Args.hasArg(options::OPT_fapple_kext)) &&
getMachOToolChain().isKernelStatic()) ||
Args.hasArg(options::OPT_static)))
CmdArgs.push_back("-static");
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
assert(Output.isFilename() && "Unexpected lipo output.");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
// asm_final spec is empty.
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void darwin::MachOTool::anchor() {}
void darwin::MachOTool::AddMachOArch(const ArgList &Args,
ArgStringList &CmdArgs) const {
StringRef ArchName = getMachOToolChain().getMachOArchName(Args);
// Derived from darwin_arch spec.
CmdArgs.push_back("-arch");
CmdArgs.push_back(Args.MakeArgString(ArchName));
// FIXME: Is this needed anymore?
if (ArchName == "arm")
CmdArgs.push_back("-force_cpusubtype_ALL");
}
bool darwin::Linker::NeedsTempPath(const InputInfoList &Inputs) const {
// We only need to generate a temp path for LTO if we aren't compiling object
// files. When compiling source files, we run 'dsymutil' after linking. We
// don't run 'dsymutil' when compiling object files.
for (const auto &Input : Inputs)
if (Input.getType() != types::TY_Object)
return true;
return false;
}
void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args,
ArgStringList &CmdArgs,
const InputInfoList &Inputs) const {
const Driver &D = getToolChain().getDriver();
const toolchains::MachO &MachOTC = getMachOToolChain();
unsigned Version[5] = {0, 0, 0, 0, 0};
if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
if (!Driver::GetReleaseVersion(A->getValue(), Version))
D.Diag(diag::err_drv_invalid_version_number) << A->getAsString(Args);
}
// Newer linkers support -demangle. Pass it if supported and not disabled by
// the user.
if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("-demangle");
if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)
CmdArgs.push_back("-export_dynamic");
// If we are using App Extension restrictions, pass a flag to the linker
// telling it that the compiled code has been audited.
if (Args.hasFlag(options::OPT_fapplication_extension,
options::OPT_fno_application_extension, false))
CmdArgs.push_back("-application_extension");
if (D.isUsingLTO()) {
// If we are using LTO, then automatically create a temporary file path for
// the linker to use, so that it's lifetime will extend past a possible
// dsymutil step.
if (Version[0] >= 116 && NeedsTempPath(Inputs)) {
const char *TmpPath = C.getArgs().MakeArgString(
D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object)));
C.addTempFile(TmpPath);
CmdArgs.push_back("-object_path_lto");
CmdArgs.push_back(TmpPath);
}
// Use -lto_library option to specify the libLTO.dylib path. Try to find
// it in clang installed libraries. If not found, the option is not used
// and 'ld' will use its default mechanism to search for libLTO.dylib.
if (Version[0] >= 133) {
// Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
StringRef P = llvm::sys::path::parent_path(D.getInstalledDir());
SmallString<128> LibLTOPath(P);
llvm::sys::path::append(LibLTOPath, "lib");
llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
if (llvm::sys::fs::exists(LibLTOPath)) {
CmdArgs.push_back("-lto_library");
CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
} else {
D.Diag(diag::warn_drv_lto_libpath);
}
}
}
// Derived from the "link" spec.
Args.AddAllArgs(CmdArgs, options::OPT_static);
if (!Args.hasArg(options::OPT_static))
CmdArgs.push_back("-dynamic");
if (Args.hasArg(options::OPT_fgnu_runtime)) {
// FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
// here. How do we wish to handle such things?
}
if (!Args.hasArg(options::OPT_dynamiclib)) {
AddMachOArch(Args, CmdArgs);
// FIXME: Why do this only on this path?
Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
Args.AddLastArg(CmdArgs, options::OPT_bundle);
Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
Args.AddAllArgs(CmdArgs, options::OPT_client__name);
Arg *A;
if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
(A = Args.getLastArg(options::OPT_current__version)) ||
(A = Args.getLastArg(options::OPT_install__name)))
D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
<< "-dynamiclib";
Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
} else {
CmdArgs.push_back("-dylib");
Arg *A;
if ((A = Args.getLastArg(options::OPT_bundle)) ||
(A = Args.getLastArg(options::OPT_bundle__loader)) ||
(A = Args.getLastArg(options::OPT_client__name)) ||
(A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
(A = Args.getLastArg(options::OPT_keep__private__externs)) ||
(A = Args.getLastArg(options::OPT_private__bundle)))
D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
<< "-dynamiclib";
Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
"-dylib_compatibility_version");
Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
"-dylib_current_version");
AddMachOArch(Args, CmdArgs);
Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
"-dylib_install_name");
}
Args.AddLastArg(CmdArgs, options::OPT_all__load);
Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
if (MachOTC.isTargetIOSBased())
Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
Args.AddLastArg(CmdArgs, options::OPT_dynamic);
Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
Args.AddAllArgs(CmdArgs, options::OPT_force__load);
Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
Args.AddAllArgs(CmdArgs, options::OPT_image__base);
Args.AddAllArgs(CmdArgs, options::OPT_init);
// Add the deployment target.
MachOTC.addMinVersionArgs(Args, CmdArgs);
Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
Args.AddLastArg(CmdArgs, options::OPT_multi__module);
Args.AddLastArg(CmdArgs, options::OPT_single__module);
Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
if (const Arg *A =
Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
options::OPT_fno_pie, options::OPT_fno_PIE)) {
if (A->getOption().matches(options::OPT_fpie) ||
A->getOption().matches(options::OPT_fPIE))
CmdArgs.push_back("-pie");
else
CmdArgs.push_back("-no_pie");
}
// for embed-bitcode, use -bitcode_bundle in linker command
if (C.getDriver().embedBitcodeEnabled() ||
C.getDriver().embedBitcodeMarkerOnly()) {
// Check if the toolchain supports bitcode build flow.
if (MachOTC.SupportsEmbeddedBitcode())
CmdArgs.push_back("-bitcode_bundle");
else
D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
}
Args.AddLastArg(CmdArgs, options::OPT_prebind);
Args.AddLastArg(CmdArgs, options::OPT_noprebind);
Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
Args.AddAllArgs(CmdArgs, options::OPT_segprot);
Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
// Give --sysroot= preference, over the Apple specific behavior to also use
// --isysroot as the syslibroot.
StringRef sysroot = C.getSysRoot();
if (sysroot != "") {
CmdArgs.push_back("-syslibroot");
CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
} else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
CmdArgs.push_back("-syslibroot");
CmdArgs.push_back(A->getValue());
}
Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
Args.AddAllArgs(CmdArgs, options::OPT_undefined);
Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
Args.AddAllArgs(CmdArgs, options::OPT_y);
Args.AddLastArg(CmdArgs, options::OPT_w);
Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
Args.AddLastArg(CmdArgs, options::OPT_whyload);
Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
Args.AddLastArg(CmdArgs, options::OPT_dylinker);
Args.AddLastArg(CmdArgs, options::OPT_Mach);
}
void darwin::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
// If the number of arguments surpasses the system limits, we will encode the
// input files in a separate file, shortening the command line. To this end,
// build a list of input file names that can be passed via a file with the
// -filelist linker option.
llvm::opt::ArgStringList InputFileList;
// The logic here is derived from gcc's behavior; most of which
// comes from specs (starting with link_command). Consult gcc for
// more information.
ArgStringList CmdArgs;
/// Hack(tm) to ignore linking errors when we are doing ARC migration.
if (Args.hasArg(options::OPT_ccc_arcmt_check,
options::OPT_ccc_arcmt_migrate)) {
for (const auto &Arg : Args)
Arg->claim();
const char *Exec =
Args.MakeArgString(getToolChain().GetProgramPath("touch"));
CmdArgs.push_back(Output.getFilename());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
return;
}
// I'm not sure why this particular decomposition exists in gcc, but
// we follow suite for ease of comparison.
AddLinkArgs(C, Args, CmdArgs, Inputs);
// It seems that the 'e' option is completely ignored for dynamic executables
// (the default), and with static executables, the last one wins, as expected.
Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
options::OPT_Z_Flag, options::OPT_u_Group,
options::OPT_e, options::OPT_r});
// Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
// members of static archive libraries which implement Objective-C classes or
// categories.
if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
CmdArgs.push_back("-ObjC");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
// SafeStack requires its own runtime libraries
// These libraries should be linked first, to make sure the
// __safestack_init constructor executes before everything else
if (getToolChain().getSanitizerArgs().needsSafeStackRt()) {
getMachOToolChain().AddLinkRuntimeLib(Args, CmdArgs,
"libclang_rt.safestack_osx.a",
/*AlwaysLink=*/true);
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
// Build the input file for -filelist (list of linker input files) in case we
// need it later
for (const auto &II : Inputs) {
if (!II.isFilename()) {
// This is a linker input argument.
// We cannot mix input arguments and file names in a -filelist input, thus
// we prematurely stop our list (remaining files shall be passed as
// arguments).
if (InputFileList.size() > 0)
break;
continue;
}
InputFileList.push_back(II.getFilename());
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
addOpenMPRuntime(CmdArgs, getToolChain(), Args);
if (isObjCRuntimeLinked(Args) &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
// We use arclite library for both ARC and subscripting support.
getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
CmdArgs.push_back("-framework");
CmdArgs.push_back("Foundation");
// Link libobj.
CmdArgs.push_back("-lobjc");
}
if (LinkingOutput) {
CmdArgs.push_back("-arch_multiple");
CmdArgs.push_back("-final_output");
CmdArgs.push_back(LinkingOutput);
}
if (Args.hasArg(options::OPT_fnested_functions))
CmdArgs.push_back("-allow_stack_execute");
getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
if (unsigned Parallelism =
getLTOParallelism(Args, getToolChain().getDriver())) {
CmdArgs.push_back("-mllvm");
CmdArgs.push_back(
Args.MakeArgString(Twine("-threads=") + llvm::to_string(Parallelism)));
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (getToolChain().getDriver().CCCIsCXX())
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
// link_ssp spec is empty.
// Let the tool chain choose which runtime library to link.
getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs);
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
// endfile_spec is empty.
}
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_F);
// -iframework should be forwarded as -F.
for (const Arg *A : Args.filtered(options::OPT_iframework))
CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
if (A->getValue() == StringRef("Accelerate")) {
CmdArgs.push_back("-framework");
CmdArgs.push_back("Accelerate");
}
}
}
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
std::unique_ptr<Command> Cmd =
llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
Cmd->setInputFileList(std::move(InputFileList));
C.addCommand(std::move(Cmd));
}
void darwin::Lipo::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
CmdArgs.push_back("-create");
assert(Output.isFilename() && "Unexpected lipo output.");
CmdArgs.push_back("-output");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs) {
assert(II.isFilename() && "Unexpected lipo input.");
CmdArgs.push_back(II.getFilename());
}
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void darwin::Dsymutil::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
const InputInfo &Input = Inputs[0];
assert(Input.isFilename() && "Unexpected dsymutil input.");
CmdArgs.push_back(Input.getFilename());
const char *Exec =
Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void darwin::VerifyDebug::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
CmdArgs.push_back("--verify");
CmdArgs.push_back("--debug-info");
CmdArgs.push_back("--eh-frame");
CmdArgs.push_back("--quiet");
assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
const InputInfo &Input = Inputs[0];
assert(Input.isFilename() && "Unexpected verify input");
// Grabbing the output of the earlier dsymutil run.
CmdArgs.push_back(Input.getFilename());
const char *Exec =
Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void solaris::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
// Demangle C++ names in errors
CmdArgs.push_back("-C");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
CmdArgs.push_back("-e");
CmdArgs.push_back("_start");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
CmdArgs.push_back("-dn");
} else {
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-shared");
} else {
CmdArgs.push_back("--dynamic-linker");
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("ld.so.1")));
}
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("values-Xa.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
}
getToolChain().AddFilePathLibArgs(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_e, options::OPT_r});
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (getToolChain().getDriver().CCCIsCXX())
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("-lc");
if (!Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lm");
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
}
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
getToolChain().addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void openbsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
switch (getToolChain().getArch()) {
case llvm::Triple::x86:
// When building 32-bit code on OpenBSD/amd64, we have to explicitly
// instruct as in the base system to assemble 32-bit code.
CmdArgs.push_back("--32");
break;
case llvm::Triple::ppc:
CmdArgs.push_back("-mppc");
CmdArgs.push_back("-many");
break;
case llvm::Triple::sparc:
case llvm::Triple::sparcel: {
CmdArgs.push_back("-32");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::sparcv9: {
CmdArgs.push_back("-64");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::mips64:
case llvm::Triple::mips64el: {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
CmdArgs.push_back("-mabi");
CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data());
if (getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("-EB");
else
CmdArgs.push_back("-EL");
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
default:
break;
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("-EB");
else if (getToolChain().getArch() == llvm::Triple::mips64el)
CmdArgs.push_back("-EL");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
CmdArgs.push_back("-e");
CmdArgs.push_back("__start");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
CmdArgs.push_back("--eh-frame-hdr");
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-shared");
} else {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/usr/libexec/ld.so");
}
}
if (Args.hasArg(options::OPT_nopie))
CmdArgs.push_back("-nopie");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("gcrt0.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt0.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
} else {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
}
}
std::string Triple = getToolChain().getTripleString();
if (Triple.substr(0, 6) == "x86_64")
Triple.replace(0, 6, "amd64");
CmdArgs.push_back(
Args.MakeArgString("-L/usr/lib/gcc-lib/" + Triple + "/4.2.1"));
Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_e, options::OPT_s, options::OPT_t,
options::OPT_Z_Flag, options::OPT_r});
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (D.CCCIsCXX()) {
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lm_p");
else
CmdArgs.push_back("-lm");
}
// FIXME: For some reason GCC passes -lgcc before adding
// the default system libraries. Just mimic this for now.
CmdArgs.push_back("-lgcc");
if (Args.hasArg(options::OPT_pthread)) {
if (!Args.hasArg(options::OPT_shared) && Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lpthread_p");
else
CmdArgs.push_back("-lpthread");
}
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lc_p");
else
CmdArgs.push_back("-lc");
}
CmdArgs.push_back("-lgcc");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
}
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void bitrig::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void bitrig::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
CmdArgs.push_back("-e");
CmdArgs.push_back("__start");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
CmdArgs.push_back("--eh-frame-hdr");
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-shared");
} else {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/usr/libexec/ld.so");
}
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("gcrt0.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt0.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
} else {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
}
}
Args.AddAllArgs(CmdArgs,
{options::OPT_L, options::OPT_T_Group, options::OPT_e});
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (D.CCCIsCXX()) {
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lm_p");
else
CmdArgs.push_back("-lm");
}
if (Args.hasArg(options::OPT_pthread)) {
if (!Args.hasArg(options::OPT_shared) && Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lpthread_p");
else
CmdArgs.push_back("-lpthread");
}
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lc_p");
else
CmdArgs.push_back("-lc");
}
StringRef MyArch;
switch (getToolChain().getArch()) {
case llvm::Triple::arm:
MyArch = "arm";
break;
case llvm::Triple::x86:
MyArch = "i386";
break;
case llvm::Triple::x86_64:
MyArch = "amd64";
break;
default:
llvm_unreachable("Unsupported architecture");
}
CmdArgs.push_back(Args.MakeArgString("-lclang_rt." + MyArch));
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
}
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void freebsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
// When building 32-bit code on FreeBSD/amd64, we have to explicitly
// instruct as in the base system to assemble 32-bit code.
switch (getToolChain().getArch()) {
default:
break;
case llvm::Triple::x86:
CmdArgs.push_back("--32");
break;
case llvm::Triple::ppc:
CmdArgs.push_back("-a32");
break;
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el: {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
CmdArgs.push_back("-march");
CmdArgs.push_back(CPUName.data());
CmdArgs.push_back("-mabi");
CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data());
if (getToolChain().getArch() == llvm::Triple::mips ||
getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("-EB");
else
CmdArgs.push_back("-EL");
if (Arg *A = Args.getLastArg(options::OPT_G)) {
StringRef v = A->getValue();
CmdArgs.push_back(Args.MakeArgString("-G" + v));
A->claim();
}
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb: {
arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
if (ABI == arm::FloatABI::Hard)
CmdArgs.push_back("-mfpu=vfp");
else
CmdArgs.push_back("-mfpu=softvfp");
switch (getToolChain().getTriple().getEnvironment()) {
case llvm::Triple::GNUEABIHF:
case llvm::Triple::GNUEABI:
case llvm::Triple::EABI:
CmdArgs.push_back("-meabi=5");
break;
default:
CmdArgs.push_back("-matpcs");
}
break;
}
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
case llvm::Triple::sparcv9: {
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::FreeBSD &ToolChain =
static_cast<const toolchains::FreeBSD &>(getToolChain());
const Driver &D = ToolChain.getDriver();
const llvm::Triple::ArchType Arch = ToolChain.getArch();
const bool IsPIE =
!Args.hasArg(options::OPT_shared) &&
(Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (IsPIE)
CmdArgs.push_back("-pie");
CmdArgs.push_back("--eh-frame-hdr");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-Bshareable");
} else {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/libexec/ld-elf.so.1");
}
if (ToolChain.getTriple().getOSMajorVersion() >= 9) {
if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc ||
Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
CmdArgs.push_back("--hash-style=both");
}
}
CmdArgs.push_back("--enable-new-dtags");
}
// When building 32-bit code on FreeBSD/amd64, we have to explicitly
// instruct ld in the base system to link 32-bit code.
if (Arch == llvm::Triple::x86) {
CmdArgs.push_back("-m");
CmdArgs.push_back("elf_i386_fbsd");
}
if (Arch == llvm::Triple::ppc) {
CmdArgs.push_back("-m");
CmdArgs.push_back("elf32ppc_fbsd");
}
if (Arg *A = Args.getLastArg(options::OPT_G)) {
if (ToolChain.getArch() == llvm::Triple::mips ||
ToolChain.getArch() == llvm::Triple::mipsel ||
ToolChain.getArch() == llvm::Triple::mips64 ||
ToolChain.getArch() == llvm::Triple::mips64el) {
StringRef v = A->getValue();
CmdArgs.push_back(Args.MakeArgString("-G" + v));
A->claim();
}
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
const char *crt1 = nullptr;
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
crt1 = "gcrt1.o";
else if (IsPIE)
crt1 = "Scrt1.o";
else
crt1 = "crt1.o";
}
if (crt1)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
const char *crtbegin = nullptr;
if (Args.hasArg(options::OPT_static))
crtbegin = "crtbeginT.o";
else if (Args.hasArg(options::OPT_shared) || IsPIE)
crtbegin = "crtbeginS.o";
else
crtbegin = "crtbegin.o";
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
Args.AddAllArgs(CmdArgs, options::OPT_r);
if (D.isUsingLTO())
AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
addOpenMPRuntime(CmdArgs, ToolChain, Args);
if (D.CCCIsCXX()) {
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lm_p");
else
CmdArgs.push_back("-lm");
}
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
// FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
// the default system libraries. Just mimic this for now.
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lgcc_p");
else
CmdArgs.push_back("-lgcc");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-lgcc_eh");
} else if (Args.hasArg(options::OPT_pg)) {
CmdArgs.push_back("-lgcc_eh_p");
} else {
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("--no-as-needed");
}
if (Args.hasArg(options::OPT_pthread)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lpthread_p");
else
CmdArgs.push_back("-lpthread");
}
if (Args.hasArg(options::OPT_pg)) {
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-lc");
else
CmdArgs.push_back("-lc_p");
CmdArgs.push_back("-lgcc_p");
} else {
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lgcc");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-lgcc_eh");
} else if (Args.hasArg(options::OPT_pg)) {
CmdArgs.push_back("-lgcc_eh_p");
} else {
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("--no-as-needed");
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || IsPIE)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
else
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
ToolChain.addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void netbsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
// GNU as needs different flags for creating the correct output format
// on architectures with different ABIs or optional feature sets.
switch (getToolChain().getArch()) {
case llvm::Triple::x86:
CmdArgs.push_back("--32");
break;
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb: {
StringRef MArch, MCPU;
getARMArchCPUFromArgs(Args, MArch, MCPU, /*FromAs*/ true);
std::string Arch =
arm::getARMTargetCPU(MCPU, MArch, getToolChain().getTriple());
CmdArgs.push_back(Args.MakeArgString("-mcpu=" + Arch));
break;
}
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el: {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
CmdArgs.push_back("-march");
CmdArgs.push_back(CPUName.data());
CmdArgs.push_back("-mabi");
CmdArgs.push_back(getGnuCompatibleMipsABIName(ABIName).data());
if (getToolChain().getArch() == llvm::Triple::mips ||
getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("-EB");
else
CmdArgs.push_back("-EL");
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::sparc:
case llvm::Triple::sparcel: {
CmdArgs.push_back("-32");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::sparcv9: {
CmdArgs.push_back("-64");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
default:
break;
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString((getToolChain().GetProgramPath("as")));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
CmdArgs.push_back("--eh-frame-hdr");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-Bshareable");
} else {
Args.AddAllArgs(CmdArgs, options::OPT_pie);
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/libexec/ld.elf_so");
}
}
// Many NetBSD architectures support more than one ABI.
// Determine the correct emulation for ld.
switch (getToolChain().getArch()) {
case llvm::Triple::x86:
CmdArgs.push_back("-m");
CmdArgs.push_back("elf_i386");
break;
case llvm::Triple::arm:
case llvm::Triple::thumb:
CmdArgs.push_back("-m");
switch (getToolChain().getTriple().getEnvironment()) {
case llvm::Triple::EABI:
case llvm::Triple::GNUEABI:
CmdArgs.push_back("armelf_nbsd_eabi");
break;
case llvm::Triple::EABIHF:
case llvm::Triple::GNUEABIHF:
CmdArgs.push_back("armelf_nbsd_eabihf");
break;
default:
CmdArgs.push_back("armelf_nbsd");
break;
}
break;
case llvm::Triple::armeb:
case llvm::Triple::thumbeb:
arm::appendEBLinkFlags(Args, CmdArgs, getToolChain().getEffectiveTriple());
CmdArgs.push_back("-m");
switch (getToolChain().getTriple().getEnvironment()) {
case llvm::Triple::EABI:
case llvm::Triple::GNUEABI:
CmdArgs.push_back("armelfb_nbsd_eabi");
break;
case llvm::Triple::EABIHF:
case llvm::Triple::GNUEABIHF:
CmdArgs.push_back("armelfb_nbsd_eabihf");
break;
default:
CmdArgs.push_back("armelfb_nbsd");
break;
}
break;
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
if (mips::hasMipsAbiArg(Args, "32")) {
CmdArgs.push_back("-m");
if (getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("elf32btsmip");
else
CmdArgs.push_back("elf32ltsmip");
} else if (mips::hasMipsAbiArg(Args, "64")) {
CmdArgs.push_back("-m");
if (getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("elf64btsmip");
else
CmdArgs.push_back("elf64ltsmip");
}
break;
case llvm::Triple::ppc:
CmdArgs.push_back("-m");
CmdArgs.push_back("elf32ppc_nbsd");
break;
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
CmdArgs.push_back("-m");
CmdArgs.push_back("elf64ppc");
break;
case llvm::Triple::sparc:
CmdArgs.push_back("-m");
CmdArgs.push_back("elf32_sparc");
break;
case llvm::Triple::sparcv9:
CmdArgs.push_back("-m");
CmdArgs.push_back("elf64_sparc");
break;
default:
break;
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt0.o")));
}
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
} else {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
}
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
Args.AddAllArgs(CmdArgs, options::OPT_r);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
unsigned Major, Minor, Micro;
getToolChain().getTriple().getOSVersion(Major, Minor, Micro);
bool useLibgcc = true;
if (Major >= 7 || Major == 0) {
switch (getToolChain().getArch()) {
case llvm::Triple::aarch64:
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb:
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
case llvm::Triple::ppc64le:
case llvm::Triple::sparc:
case llvm::Triple::sparcv9:
case llvm::Triple::x86:
case llvm::Triple::x86_64:
useLibgcc = false;
break;
default:
break;
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
addOpenMPRuntime(CmdArgs, getToolChain(), Args);
if (D.CCCIsCXX()) {
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lc");
if (useLibgcc) {
if (Args.hasArg(options::OPT_static)) {
// libgcc_eh depends on libc, so resolve as much as possible,
// pull in any new requirements from libc and then get the rest
// of libgcc.
CmdArgs.push_back("-lgcc_eh");
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lgcc");
} else {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("--no-as-needed");
}
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
}
getToolChain().addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void gnutools::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
ArgStringList CmdArgs;
llvm::Reloc::Model RelocationModel;
unsigned PICLevel;
bool IsPIE;
std::tie(RelocationModel, PICLevel, IsPIE) =
ParsePICArgs(getToolChain(), Triple, Args);
switch (getToolChain().getArch()) {
default:
break;
// Add --32/--64 to make sure we get the format we want.
// This is incomplete
case llvm::Triple::x86:
CmdArgs.push_back("--32");
break;
case llvm::Triple::x86_64:
if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
CmdArgs.push_back("--x32");
else
CmdArgs.push_back("--64");
break;
case llvm::Triple::ppc:
CmdArgs.push_back("-a32");
CmdArgs.push_back("-mppc");
CmdArgs.push_back("-many");
break;
case llvm::Triple::ppc64:
CmdArgs.push_back("-a64");
CmdArgs.push_back("-mppc64");
CmdArgs.push_back("-many");
break;
case llvm::Triple::ppc64le:
CmdArgs.push_back("-a64");
CmdArgs.push_back("-mppc64");
CmdArgs.push_back("-many");
CmdArgs.push_back("-mlittle-endian");
break;
case llvm::Triple::sparc:
case llvm::Triple::sparcel: {
CmdArgs.push_back("-32");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::sparcv9: {
CmdArgs.push_back("-64");
std::string CPU = getCPUName(Args, getToolChain().getTriple());
CmdArgs.push_back(getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::arm:
case llvm::Triple::armeb:
case llvm::Triple::thumb:
case llvm::Triple::thumbeb: {
const llvm::Triple &Triple2 = getToolChain().getTriple();
switch (Triple2.getSubArch()) {
case llvm::Triple::ARMSubArch_v7:
CmdArgs.push_back("-mfpu=neon");
break;
case llvm::Triple::ARMSubArch_v8:
CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
break;
default:
break;
}
switch (arm::getARMFloatABI(getToolChain(), Args)) {
case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
case arm::FloatABI::Soft:
CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
break;
case arm::FloatABI::SoftFP:
CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
break;
case arm::FloatABI::Hard:
CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
break;
}
Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
// FIXME: remove krait check when GNU tools support krait cpu
// for now replace it with -mcpu=cortex-a15 to avoid a lower
// march from being picked in the absence of a cpu flag.
Arg *A;
if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
StringRef(A->getValue()).equals_lower("krait"))
CmdArgs.push_back("-mcpu=cortex-a15");
else
Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
break;
}
case llvm::Triple::mips:
case llvm::Triple::mipsel:
case llvm::Triple::mips64:
case llvm::Triple::mips64el: {
StringRef CPUName;
StringRef ABIName;
mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
ABIName = getGnuCompatibleMipsABIName(ABIName);
CmdArgs.push_back("-march");
CmdArgs.push_back(CPUName.data());
CmdArgs.push_back("-mabi");
CmdArgs.push_back(ABIName.data());
// -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
// or -mshared (not implemented) is in effect.
if (RelocationModel == llvm::Reloc::Static)
CmdArgs.push_back("-mno-shared");
// LLVM doesn't support -mplt yet and acts as if it is always given.
// However, -mplt has no effect with the N64 ABI.
CmdArgs.push_back(ABIName == "64" ? "-KPIC" : "-call_nonpic");
if (getToolChain().getArch() == llvm::Triple::mips ||
getToolChain().getArch() == llvm::Triple::mips64)
CmdArgs.push_back("-EB");
else
CmdArgs.push_back("-EL");
if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
if (StringRef(A->getValue()) == "2008")
CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
}
// Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
options::OPT_mfp64)) {
A->claim();
A->render(Args, CmdArgs);
} else if (mips::shouldUseFPXX(
Args, getToolChain().getTriple(), CPUName, ABIName,
getMipsFloatABI(getToolChain().getDriver(), Args)))
CmdArgs.push_back("-mfpxx");
// Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
// -mno-mips16 is actually -no-mips16.
if (Arg *A =
Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
if (A->getOption().matches(options::OPT_mips16)) {
A->claim();
A->render(Args, CmdArgs);
} else {
A->claim();
CmdArgs.push_back("-no-mips16");
}
}
Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
options::OPT_mno_micromips);
Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
// Do not use AddLastArg because not all versions of MIPS assembler
// support -mmsa / -mno-msa options.
if (A->getOption().matches(options::OPT_mmsa))
CmdArgs.push_back(Args.MakeArgString("-mmsa"));
}
Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
options::OPT_msoft_float);
Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
options::OPT_msingle_float);
Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
options::OPT_mno_odd_spreg);
AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
break;
}
case llvm::Triple::systemz: {
// Always pass an -march option, since our default of z10 is later
// than the GNU assembler's default.
StringRef CPUName = getSystemZTargetCPU(Args);
CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
break;
}
}
Args.AddAllArgs(CmdArgs, options::OPT_I);
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
// Handle the debug info splitting at object creation time if we're
// creating an object.
// TODO: Currently only works on linux with newer objcopy.
if (Args.hasArg(options::OPT_gsplit_dwarf) &&
getToolChain().getTriple().isOSLinux())
SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
SplitDebugName(Args, Inputs[0]));
}
static void AddLibgcc(const llvm::Triple &Triple, const Driver &D,
ArgStringList &CmdArgs, const ArgList &Args) {
bool isAndroid = Triple.isAndroid();
bool isCygMing = Triple.isOSCygMing();
bool IsIAMCU = Triple.isOSIAMCU();
bool StaticLibgcc = Args.hasArg(options::OPT_static_libgcc) ||
Args.hasArg(options::OPT_static);
if (!D.CCCIsCXX())
CmdArgs.push_back("-lgcc");
if (StaticLibgcc || isAndroid) {
if (D.CCCIsCXX())
CmdArgs.push_back("-lgcc");
} else {
if (!D.CCCIsCXX() && !isCygMing)
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_s");
if (!D.CCCIsCXX() && !isCygMing)
CmdArgs.push_back("--no-as-needed");
}
if (StaticLibgcc && !isAndroid && !IsIAMCU)
CmdArgs.push_back("-lgcc_eh");
else if (!Args.hasArg(options::OPT_shared) && D.CCCIsCXX())
CmdArgs.push_back("-lgcc");
// According to Android ABI, we have to link with libdl if we are
// linking with non-static libgcc.
//
// NOTE: This fixes a link error on Android MIPS as well. The non-static
// libgcc for MIPS relies on _Unwind_Find_FDE and dl_iterate_phdr from libdl.
if (isAndroid && !StaticLibgcc)
CmdArgs.push_back("-ldl");
}
static void AddRunTimeLibs(const ToolChain &TC, const Driver &D,
ArgStringList &CmdArgs, const ArgList &Args) {
// Make use of compiler-rt if --rtlib option is used
ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(Args);
switch (RLT) {
case ToolChain::RLT_CompilerRT:
switch (TC.getTriple().getOS()) {
default:
llvm_unreachable("unsupported OS");
case llvm::Triple::Win32:
case llvm::Triple::Linux:
case llvm::Triple::Fuchsia:
addClangRT(TC, Args, CmdArgs);
break;
}
break;
case ToolChain::RLT_Libgcc:
// Make sure libgcc is not used under MSVC environment by default
if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
// Issue error diagnostic if libgcc is explicitly specified
// through command line as --rtlib option argument.
if (Args.hasArg(options::OPT_rtlib_EQ)) {
TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
<< Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC";
}
} else
AddLibgcc(TC.getTriple(), D, CmdArgs, Args);
break;
}
}
static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
switch (T.getArch()) {
case llvm::Triple::x86:
if (T.isOSIAMCU())
return "elf_iamcu";
return "elf_i386";
case llvm::Triple::aarch64:
return "aarch64linux";
case llvm::Triple::aarch64_be:
return "aarch64_be_linux";
case llvm::Triple::arm:
case llvm::Triple::thumb:
return "armelf_linux_eabi";
case llvm::Triple::armeb:
case llvm::Triple::thumbeb:
return "armelfb_linux_eabi";
case llvm::Triple::ppc:
return "elf32ppclinux";
case llvm::Triple::ppc64:
return "elf64ppc";
case llvm::Triple::ppc64le:
return "elf64lppc";
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
return "elf32_sparc";
case llvm::Triple::sparcv9:
return "elf64_sparc";
case llvm::Triple::mips:
return "elf32btsmip";
case llvm::Triple::mipsel:
return "elf32ltsmip";
case llvm::Triple::mips64:
if (mips::hasMipsAbiArg(Args, "n32"))
return "elf32btsmipn32";
return "elf64btsmip";
case llvm::Triple::mips64el:
if (mips::hasMipsAbiArg(Args, "n32"))
return "elf32ltsmipn32";
return "elf64ltsmip";
case llvm::Triple::systemz:
return "elf64_s390";
case llvm::Triple::x86_64:
if (T.getEnvironment() == llvm::Triple::GNUX32)
return "elf32_x86_64";
return "elf_x86_64";
default:
llvm_unreachable("Unexpected arch");
}
}
void gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::Linux &ToolChain =
static_cast<const toolchains::Linux &>(getToolChain());
const Driver &D = ToolChain.getDriver();
const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
const llvm::Triple::ArchType Arch = ToolChain.getArch();
const bool isAndroid = ToolChain.getTriple().isAndroid();
const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
const bool IsPIE =
!Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_static) &&
(Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
const bool HasCRTBeginEndFiles =
ToolChain.getTriple().hasEnvironment() ||
(ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
if (llvm::sys::path::filename(Exec) == "lld") {
CmdArgs.push_back("-flavor");
CmdArgs.push_back("old-gnu");
CmdArgs.push_back("-target");
CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
}
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (IsPIE)
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
arm::appendEBLinkFlags(Args, CmdArgs, Triple);
for (const auto &Opt : ToolChain.ExtraOpts)
CmdArgs.push_back(Opt.c_str());
if (!Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("--eh-frame-hdr");
}
CmdArgs.push_back("-m");
CmdArgs.push_back(getLDMOption(ToolChain.getTriple(), Args));
if (Args.hasArg(options::OPT_static)) {
if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
CmdArgs.push_back("-Bstatic");
else
CmdArgs.push_back("-static");
} else if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-shared");
}
if (!Args.hasArg(options::OPT_static)) {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (!Args.hasArg(options::OPT_shared)) {
const std::string Loader =
D.DyldPrefix + ToolChain.getDynamicLinker(Args);
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back(Args.MakeArgString(Loader));
}
}
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!isAndroid && !IsIAMCU) {
const char *crt1 = nullptr;
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
crt1 = "gcrt1.o";
else if (IsPIE)
crt1 = "Scrt1.o";
else
crt1 = "crt1.o";
}
if (crt1)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
}
if (IsIAMCU)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
else {
const char *crtbegin;
if (Args.hasArg(options::OPT_static))
crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
else if (Args.hasArg(options::OPT_shared))
crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
else if (IsPIE)
crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
else
crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
if (HasCRTBeginEndFiles)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
}
// Add crtfastmath.o if available and fast math is enabled.
ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_u);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
if (D.isUsingLTO())
AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("--no-demangle");
bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
// The profile runtime also needs access to system libraries.
getToolChain().addProfileRTLibs(Args, CmdArgs);
if (D.CCCIsCXX() &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bstatic");
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bdynamic");
CmdArgs.push_back("-lm");
}
// Silence warnings when linking C code with a C++ '-stdlib' argument.
Args.ClaimAllArgs(options::OPT_stdlib_EQ);
if (!Args.hasArg(options::OPT_nostdlib)) {
if (!Args.hasArg(options::OPT_nodefaultlibs)) {
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--start-group");
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
if (NeedsXRayDeps)
linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
bool WantPthread = Args.hasArg(options::OPT_pthread) ||
Args.hasArg(options::OPT_pthreads);
if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
options::OPT_fno_openmp, false)) {
// OpenMP runtimes implies pthreads when using the GNU toolchain.
// FIXME: Does this really make sense for all GNU toolchains?
WantPthread = true;
// Also link the particular OpenMP runtimes.
switch (getOpenMPRuntime(ToolChain, Args)) {
case OMPRT_OMP:
CmdArgs.push_back("-lomp");
break;
case OMPRT_GOMP:
CmdArgs.push_back("-lgomp");
// FIXME: Exclude this for platforms with libgomp that don't require
// librt. Most modern Linux platforms require it, but some may not.
CmdArgs.push_back("-lrt");
break;
case OMPRT_IOMP5:
CmdArgs.push_back("-liomp5");
break;
case OMPRT_Unknown:
// Already diagnosed.
break;
}
}
AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
if (WantPthread && !isAndroid)
CmdArgs.push_back("-lpthread");
if (Args.hasArg(options::OPT_fsplit_stack))
CmdArgs.push_back("--wrap=pthread_create");
CmdArgs.push_back("-lc");
// Add IAMCU specific libs, if needed.
if (IsIAMCU)
CmdArgs.push_back("-lgloss");
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--end-group");
else
AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
// Add IAMCU specific libs (outside the group), if needed.
if (IsIAMCU) {
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lsoftfp");
CmdArgs.push_back("--no-as-needed");
}
}
if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
const char *crtend;
if (Args.hasArg(options::OPT_shared))
crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
else if (IsPIE)
crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
else
crtend = isAndroid ? "crtend_android.o" : "crtend.o";
if (HasCRTBeginEndFiles)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
if (!isAndroid)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
}
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
// NaCl ARM assembly (inline or standalone) can be written with a set of macros
// for the various SFI requirements like register masking. The assembly tool
// inserts the file containing the macros as an input into all the assembly
// jobs.
void nacltools::AssemblerARM::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::NaClToolChain &ToolChain =
static_cast<const toolchains::NaClToolChain &>(getToolChain());
InputInfo NaClMacros(types::TY_PP_Asm, ToolChain.GetNaClArmMacrosPath(),
"nacl-arm-macros.s");
InputInfoList NewInputs;
NewInputs.push_back(NaClMacros);
NewInputs.append(Inputs.begin(), Inputs.end());
gnutools::Assembler::ConstructJob(C, JA, Output, NewInputs, Args,
LinkingOutput);
}
// This is quite similar to gnutools::Linker::ConstructJob with changes that
// we use static by default, do not yet support sanitizers or LTO, and a few
// others. Eventually we can support more of that and hopefully migrate back
// to gnutools::Linker.
void nacltools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::NaClToolChain &ToolChain =
static_cast<const toolchains::NaClToolChain &>(getToolChain());
const Driver &D = ToolChain.getDriver();
const llvm::Triple::ArchType Arch = ToolChain.getArch();
const bool IsStatic =
!Args.hasArg(options::OPT_dynamic) && !Args.hasArg(options::OPT_shared);
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
// NaClToolChain doesn't have ExtraOpts like Linux; the only relevant flag
// from there is --build-id, which we do want.
CmdArgs.push_back("--build-id");
if (!IsStatic)
CmdArgs.push_back("--eh-frame-hdr");
CmdArgs.push_back("-m");
if (Arch == llvm::Triple::x86)
CmdArgs.push_back("elf_i386_nacl");
else if (Arch == llvm::Triple::arm)
CmdArgs.push_back("armelf_nacl");
else if (Arch == llvm::Triple::x86_64)
CmdArgs.push_back("elf_x86_64_nacl");
else if (Arch == llvm::Triple::mipsel)
CmdArgs.push_back("mipselelf_nacl");
else
D.Diag(diag::err_target_unsupported_arch) << ToolChain.getArchName()
<< "Native Client";
if (IsStatic)
CmdArgs.push_back("-static");
else if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-shared");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt1.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
const char *crtbegin;
if (IsStatic)
crtbegin = "crtbeginT.o";
else if (Args.hasArg(options::OPT_shared))
crtbegin = "crtbeginS.o";
else
crtbegin = "crtbegin.o";
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_u);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("--no-demangle");
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (D.CCCIsCXX() &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
bool OnlyLibstdcxxStatic =
Args.hasArg(options::OPT_static_libstdcxx) && !IsStatic;
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bstatic");
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bdynamic");
CmdArgs.push_back("-lm");
}
if (!Args.hasArg(options::OPT_nostdlib)) {
if (!Args.hasArg(options::OPT_nodefaultlibs)) {
// Always use groups, since it has no effect on dynamic libraries.
CmdArgs.push_back("--start-group");
CmdArgs.push_back("-lc");
// NaCl's libc++ currently requires libpthread, so just always include it
// in the group for C++.
if (Args.hasArg(options::OPT_pthread) ||
Args.hasArg(options::OPT_pthreads) || D.CCCIsCXX()) {
// Gold, used by Mips, handles nested groups differently than ld, and
// without '-lnacl' it prefers symbols from libpthread.a over libnacl.a,
// which is not a desired behaviour here.
// See https://sourceware.org/ml/binutils/2015-03/msg00034.html
if (getToolChain().getArch() == llvm::Triple::mipsel)
CmdArgs.push_back("-lnacl");
CmdArgs.push_back("-lpthread");
}
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("--as-needed");
if (IsStatic)
CmdArgs.push_back("-lgcc_eh");
else
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("--no-as-needed");
// Mips needs to create and use pnacl_legacy library that contains
// definitions from bitcode/pnaclmm.c and definitions for
// __nacl_tp_tls_offset() and __nacl_tp_tdb_offset().
if (getToolChain().getArch() == llvm::Triple::mipsel)
CmdArgs.push_back("-lpnacl_legacy");
CmdArgs.push_back("--end-group");
}
if (!Args.hasArg(options::OPT_nostartfiles)) {
const char *crtend;
if (Args.hasArg(options::OPT_shared))
crtend = "crtendS.o";
else
crtend = "crtend.o";
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
}
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::Fuchsia &ToolChain =
static_cast<const toolchains::Fuchsia &>(getToolChain());
const Driver &D = ToolChain.getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
if (llvm::sys::path::stem(Exec).equals_lower("lld")) {
CmdArgs.push_back("-flavor");
CmdArgs.push_back("gnu");
}
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (!Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_r))
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
if (Args.hasArg(options::OPT_r))
CmdArgs.push_back("-r");
else
CmdArgs.push_back("--build-id");
if (!Args.hasArg(options::OPT_static))
CmdArgs.push_back("--eh-frame-hdr");
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-Bstatic");
else if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-shared");
if (!Args.hasArg(options::OPT_static)) {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (!Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back(Args.MakeArgString(D.DyldPrefix + "ld.so.1"));
}
}
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
}
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_u);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-Bdynamic");
if (D.CCCIsCXX()) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bstatic");
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bdynamic");
CmdArgs.push_back("-lm");
}
AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
if (Args.hasArg(options::OPT_pthread) ||
Args.hasArg(options::OPT_pthreads))
CmdArgs.push_back("-lpthread");
if (Args.hasArg(options::OPT_fsplit_stack))
CmdArgs.push_back("--wrap=pthread_create");
CmdArgs.push_back("-lc");
}
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void minix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void minix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
}
Args.AddAllArgs(CmdArgs,
{options::OPT_L, options::OPT_T_Group, options::OPT_e});
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
getToolChain().addProfileRTLibs(Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (D.CCCIsCXX()) {
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lCompilerRT-Generic");
CmdArgs.push_back("-L/usr/pkg/compiler-rt/lib");
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
}
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
/// DragonFly Tools
// For now, DragonFly Assemble does just about the same as for
// FreeBSD, but this may change soon.
void dragonfly::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
// When building 32-bit code on DragonFly/pc64, we have to explicitly
// instruct as in the base system to assemble 32-bit code.
if (getToolChain().getArch() == llvm::Triple::x86)
CmdArgs.push_back("--32");
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void dragonfly::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const Driver &D = getToolChain().getDriver();
ArgStringList CmdArgs;
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
CmdArgs.push_back("--eh-frame-hdr");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-Bshareable");
else {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/usr/libexec/ld-elf.so.2");
}
CmdArgs.push_back("--hash-style=gnu");
CmdArgs.push_back("--enable-new-dtags");
}
// When building 32-bit code on DragonFly/pc64, we have to explicitly
// instruct ld in the base system to link 32-bit code.
if (getToolChain().getArch() == llvm::Triple::x86) {
CmdArgs.push_back("-m");
CmdArgs.push_back("elf_i386");
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("gcrt1.o")));
else {
if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("Scrt1.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
}
}
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs,
{options::OPT_L, options::OPT_T_Group, options::OPT_e});
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
CmdArgs.push_back("-L/usr/lib/gcc50");
if (!Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-rpath");
CmdArgs.push_back("/usr/lib/gcc50");
}
if (D.CCCIsCXX()) {
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
if (!Args.hasArg(options::OPT_nolibc)) {
CmdArgs.push_back("-lc");
}
if (Args.hasArg(options::OPT_static) ||
Args.hasArg(options::OPT_static_libgcc)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lgcc_eh");
} else {
if (Args.hasArg(options::OPT_shared_libgcc)) {
CmdArgs.push_back("-lgcc_pic");
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-lgcc");
} else {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_pic");
CmdArgs.push_back("--no-as-needed");
}
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
else
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
}
getToolChain().addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
// Try to find Exe from a Visual Studio distribution. This first tries to find
// an installed copy of Visual Studio and, failing that, looks in the PATH,
// making sure that whatever executable that's found is not a same-named exe
// from clang itself to prevent clang from falling back to itself.
static std::string FindVisualStudioExecutable(const ToolChain &TC,
const char *Exe,
const char *ClangProgramPath) {
const auto &MSVC = static_cast<const toolchains::MSVCToolChain &>(TC);
std::string visualStudioBinDir;
if (MSVC.getVisualStudioBinariesFolder(ClangProgramPath,
visualStudioBinDir)) {
SmallString<128> FilePath(visualStudioBinDir);
llvm::sys::path::append(FilePath, Exe);
if (llvm::sys::fs::can_execute(FilePath.c_str()))
return FilePath.str();
}
return Exe;
}
void visualstudio::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
const ToolChain &TC = getToolChain();
assert((Output.isFilename() || Output.isNothing()) && "invalid output");
if (Output.isFilename())
CmdArgs.push_back(
Args.MakeArgString(std::string("-out:") + Output.getFilename()));
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles) &&
!C.getDriver().IsCLMode())
CmdArgs.push_back("-defaultlib:libcmt");
if (!llvm::sys::Process::GetEnv("LIB")) {
// If the VC environment hasn't been configured (perhaps because the user
// did not run vcvarsall), try to build a consistent link environment. If
// the environment variable is set however, assume the user knows what
// they're doing.
std::string VisualStudioDir;
const auto &MSVC = static_cast<const toolchains::MSVCToolChain &>(TC);
if (MSVC.getVisualStudioInstallDir(VisualStudioDir)) {
SmallString<128> LibDir(VisualStudioDir);
llvm::sys::path::append(LibDir, "VC", "lib");
switch (MSVC.getArch()) {
case llvm::Triple::x86:
// x86 just puts the libraries directly in lib
break;
case llvm::Triple::x86_64:
llvm::sys::path::append(LibDir, "amd64");
break;
case llvm::Triple::arm:
llvm::sys::path::append(LibDir, "arm");
break;
default:
break;
}
CmdArgs.push_back(
Args.MakeArgString(std::string("-libpath:") + LibDir.c_str()));
if (MSVC.useUniversalCRT(VisualStudioDir)) {
std::string UniversalCRTLibPath;
if (MSVC.getUniversalCRTLibraryPath(UniversalCRTLibPath))
CmdArgs.push_back(Args.MakeArgString(std::string("-libpath:") +
UniversalCRTLibPath.c_str()));
}
}
std::string WindowsSdkLibPath;
if (MSVC.getWindowsSDKLibraryPath(WindowsSdkLibPath))
CmdArgs.push_back(Args.MakeArgString(std::string("-libpath:") +
WindowsSdkLibPath.c_str()));
}
if (!C.getDriver().IsCLMode() && Args.hasArg(options::OPT_L))
for (const auto &LibPath : Args.getAllArgValues(options::OPT_L))
CmdArgs.push_back(Args.MakeArgString("-libpath:" + LibPath));
CmdArgs.push_back("-nologo");
if (Args.hasArg(options::OPT_g_Group, options::OPT__SLASH_Z7,
options::OPT__SLASH_Zd))
CmdArgs.push_back("-debug");
bool DLL = Args.hasArg(options::OPT__SLASH_LD, options::OPT__SLASH_LDd,
options::OPT_shared);
if (DLL) {
CmdArgs.push_back(Args.MakeArgString("-dll"));
SmallString<128> ImplibName(Output.getFilename());
llvm::sys::path::replace_extension(ImplibName, "lib");
CmdArgs.push_back(Args.MakeArgString(std::string("-implib:") + ImplibName));
}
if (TC.getSanitizerArgs().needsAsanRt()) {
CmdArgs.push_back(Args.MakeArgString("-debug"));
CmdArgs.push_back(Args.MakeArgString("-incremental:no"));
if (Args.hasArg(options::OPT__SLASH_MD, options::OPT__SLASH_MDd)) {
for (const auto &Lib : {"asan_dynamic", "asan_dynamic_runtime_thunk"})
CmdArgs.push_back(TC.getCompilerRTArgString(Args, Lib));
// Make sure the dynamic runtime thunk is not optimized out at link time
// to ensure proper SEH handling.
CmdArgs.push_back(Args.MakeArgString(
TC.getArch() == llvm::Triple::x86
? "-include:___asan_seh_interceptor"
: "-include:__asan_seh_interceptor"));
} else if (DLL) {
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dll_thunk"));
} else {
for (const auto &Lib : {"asan", "asan_cxx"})
CmdArgs.push_back(TC.getCompilerRTArgString(Args, Lib));
}
}
Args.AddAllArgValues(CmdArgs, options::OPT__SLASH_link);
if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
options::OPT_fno_openmp, false)) {
CmdArgs.push_back("-nodefaultlib:vcomp.lib");
CmdArgs.push_back("-nodefaultlib:vcompd.lib");
CmdArgs.push_back(Args.MakeArgString(std::string("-libpath:") +
TC.getDriver().Dir + "/../lib"));
switch (getOpenMPRuntime(getToolChain(), Args)) {
case OMPRT_OMP:
CmdArgs.push_back("-defaultlib:libomp.lib");
break;
case OMPRT_IOMP5:
CmdArgs.push_back("-defaultlib:libiomp5md.lib");
break;
case OMPRT_GOMP:
break;
case OMPRT_Unknown:
// Already diagnosed.
break;
}
}
// Add compiler-rt lib in case if it was explicitly
// specified as an argument for --rtlib option.
if (!Args.hasArg(options::OPT_nostdlib)) {
AddRunTimeLibs(TC, TC.getDriver(), CmdArgs, Args);
}
// Add filenames, libraries, and other linker inputs.
for (const auto &Input : Inputs) {
if (Input.isFilename()) {
CmdArgs.push_back(Input.getFilename());
continue;
}
const Arg &A = Input.getInputArg();
// Render -l options differently for the MSVC linker.
if (A.getOption().matches(options::OPT_l)) {
StringRef Lib = A.getValue();
const char *LinkLibArg;
if (Lib.endswith(".lib"))
LinkLibArg = Args.MakeArgString(Lib);
else
LinkLibArg = Args.MakeArgString(Lib + ".lib");
CmdArgs.push_back(LinkLibArg);
continue;
}
// Otherwise, this is some other kind of linker input option like -Wl, -z,
// or -L. Render it, even if MSVC doesn't understand it.
A.renderAsInput(Args, CmdArgs);
}
TC.addProfileRTLibs(Args, CmdArgs);
// We need to special case some linker paths. In the case of lld, we need to
// translate 'lld' into 'lld-link', and in the case of the regular msvc
// linker, we need to use a special search algorithm.
llvm::SmallString<128> linkPath;
StringRef Linker = Args.getLastArgValue(options::OPT_fuse_ld_EQ, "link");
if (Linker.equals_lower("lld"))
Linker = "lld-link";
if (Linker.equals_lower("link")) {
// If we're using the MSVC linker, it's not sufficient to just use link
// from the program PATH, because other environments like GnuWin32 install
// their own link.exe which may come first.
linkPath = FindVisualStudioExecutable(TC, "link.exe",
C.getDriver().getClangProgramPath());
} else {
linkPath = Linker;
llvm::sys::path::replace_extension(linkPath, "exe");
linkPath = TC.GetProgramPath(linkPath.c_str());
}
const char *Exec = Args.MakeArgString(linkPath);
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void visualstudio::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
C.addCommand(GetCommand(C, JA, Output, Inputs, Args, LinkingOutput));
}
std::unique_ptr<Command> visualstudio::Compiler::GetCommand(
Compilation &C, const JobAction &JA, const InputInfo &Output,
const InputInfoList &Inputs, const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
CmdArgs.push_back("/nologo");
CmdArgs.push_back("/c"); // Compile only.
CmdArgs.push_back("/W0"); // No warnings.
// The goal is to be able to invoke this tool correctly based on
// any flag accepted by clang-cl.
// These are spelled the same way in clang and cl.exe,.
Args.AddAllArgs(CmdArgs, {options::OPT_D, options::OPT_U, options::OPT_I});
// Optimization level.
if (Arg *A = Args.getLastArg(options::OPT_fbuiltin, options::OPT_fno_builtin))
CmdArgs.push_back(A->getOption().getID() == options::OPT_fbuiltin ? "/Oi"
: "/Oi-");
if (Arg *A = Args.getLastArg(options::OPT_O, options::OPT_O0)) {
if (A->getOption().getID() == options::OPT_O0) {
CmdArgs.push_back("/Od");
} else {
CmdArgs.push_back("/Og");
StringRef OptLevel = A->getValue();
if (OptLevel == "s" || OptLevel == "z")
CmdArgs.push_back("/Os");
else
CmdArgs.push_back("/Ot");
CmdArgs.push_back("/Ob2");
}
}
if (Arg *A = Args.getLastArg(options::OPT_fomit_frame_pointer,
options::OPT_fno_omit_frame_pointer))
CmdArgs.push_back(A->getOption().getID() == options::OPT_fomit_frame_pointer
? "/Oy"
: "/Oy-");
if (!Args.hasArg(options::OPT_fwritable_strings))
CmdArgs.push_back("/GF");
// Flags for which clang-cl has an alias.
// FIXME: How can we ensure this stays in sync with relevant clang-cl options?
if (Args.hasFlag(options::OPT__SLASH_GR_, options::OPT__SLASH_GR,
/*default=*/false))
CmdArgs.push_back("/GR-");
if (Args.hasFlag(options::OPT__SLASH_GS_, options::OPT__SLASH_GS,
/*default=*/false))
CmdArgs.push_back("/GS-");
if (Arg *A = Args.getLastArg(options::OPT_ffunction_sections,
options::OPT_fno_function_sections))
CmdArgs.push_back(A->getOption().getID() == options::OPT_ffunction_sections
? "/Gy"
: "/Gy-");
if (Arg *A = Args.getLastArg(options::OPT_fdata_sections,
options::OPT_fno_data_sections))
CmdArgs.push_back(
A->getOption().getID() == options::OPT_fdata_sections ? "/Gw" : "/Gw-");
if (Args.hasArg(options::OPT_fsyntax_only))
CmdArgs.push_back("/Zs");
if (Args.hasArg(options::OPT_g_Flag, options::OPT_gline_tables_only,
options::OPT__SLASH_Z7))
CmdArgs.push_back("/Z7");
std::vector<std::string> Includes =
Args.getAllArgValues(options::OPT_include);
for (const auto &Include : Includes)
CmdArgs.push_back(Args.MakeArgString(std::string("/FI") + Include));
// Flags that can simply be passed through.
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_LD);
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_LDd);
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_GX);
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_GX_);
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_EH);
Args.AddAllArgs(CmdArgs, options::OPT__SLASH_Zl);
// The order of these flags is relevant, so pick the last one.
if (Arg *A = Args.getLastArg(options::OPT__SLASH_MD, options::OPT__SLASH_MDd,
options::OPT__SLASH_MT, options::OPT__SLASH_MTd))
A->render(Args, CmdArgs);
// Pass through all unknown arguments so that the fallback command can see
// them too.
Args.AddAllArgs(CmdArgs, options::OPT_UNKNOWN);
// Input filename.
assert(Inputs.size() == 1);
const InputInfo &II = Inputs[0];
assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX);
CmdArgs.push_back(II.getType() == types::TY_C ? "/Tc" : "/Tp");
if (II.isFilename())
CmdArgs.push_back(II.getFilename());
else
II.getInputArg().renderAsInput(Args, CmdArgs);
// Output filename.
assert(Output.getType() == types::TY_Object);
const char *Fo =
Args.MakeArgString(std::string("/Fo") + Output.getFilename());
CmdArgs.push_back(Fo);
const Driver &D = getToolChain().getDriver();
std::string Exec = FindVisualStudioExecutable(getToolChain(), "cl.exe",
D.getClangProgramPath());
return llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
CmdArgs, Inputs);
}
/// MinGW Tools
void MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
if (getToolChain().getArch() == llvm::Triple::x86) {
CmdArgs.push_back("--32");
} else if (getToolChain().getArch() == llvm::Triple::x86_64) {
CmdArgs.push_back("--64");
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
if (Args.hasArg(options::OPT_gsplit_dwarf))
SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
SplitDebugName(Args, Inputs[0]));
}
void MinGW::Linker::AddLibGCC(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (Args.hasArg(options::OPT_mthreads))
CmdArgs.push_back("-lmingwthrd");
CmdArgs.push_back("-lmingw32");
// Make use of compiler-rt if --rtlib option is used
ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
if (RLT == ToolChain::RLT_Libgcc) {
bool Static = Args.hasArg(options::OPT_static_libgcc) ||
Args.hasArg(options::OPT_static);
bool Shared = Args.hasArg(options::OPT_shared);
bool CXX = getToolChain().getDriver().CCCIsCXX();
if (Static || (!CXX && !Shared)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lgcc_eh");
} else {
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("-lgcc");
}
} else {
AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
}
CmdArgs.push_back("-lmoldname");
CmdArgs.push_back("-lmingwex");
CmdArgs.push_back("-lmsvcrt");
}
void MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const ToolChain &TC = getToolChain();
const Driver &D = TC.getDriver();
// const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
StringRef LinkerName = Args.getLastArgValue(options::OPT_fuse_ld_EQ, "ld");
if (LinkerName.equals_lower("lld")) {
CmdArgs.push_back("-flavor");
CmdArgs.push_back("gnu");
} else if (!LinkerName.equals_lower("ld")) {
D.Diag(diag::err_drv_unsupported_linker) << LinkerName;
}
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
CmdArgs.push_back("-m");
if (TC.getArch() == llvm::Triple::x86)
CmdArgs.push_back("i386pe");
if (TC.getArch() == llvm::Triple::x86_64)
CmdArgs.push_back("i386pep");
if (TC.getArch() == llvm::Triple::arm)
CmdArgs.push_back("thumb2pe");
if (Args.hasArg(options::OPT_mwindows)) {
CmdArgs.push_back("--subsystem");
CmdArgs.push_back("windows");
} else if (Args.hasArg(options::OPT_mconsole)) {
CmdArgs.push_back("--subsystem");
CmdArgs.push_back("console");
}
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-Bstatic");
else {
if (Args.hasArg(options::OPT_mdll))
CmdArgs.push_back("--dll");
else if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("--shared");
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-e");
if (TC.getArch() == llvm::Triple::x86)
CmdArgs.push_back("_DllMainCRTStartup@12");
else
CmdArgs.push_back("DllMainCRTStartup");
CmdArgs.push_back("--enable-auto-image-base");
}
}
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
Args.AddAllArgs(CmdArgs, options::OPT_e);
// FIXME: add -N, -n flags
Args.AddLastArg(CmdArgs, options::OPT_r);
Args.AddLastArg(CmdArgs, options::OPT_s);
Args.AddLastArg(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_u_Group);
Args.AddLastArg(CmdArgs, options::OPT_Z_Flag);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));
} else {
if (Args.hasArg(options::OPT_municode))
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));
else
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));
}
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
TC.AddFilePathLibArgs(Args, CmdArgs);
AddLinkerInputs(TC, Inputs, Args, CmdArgs);
// TODO: Add ASan stuff here
// TODO: Add profile stuff here
if (D.CCCIsCXX() &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bstatic");
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bdynamic");
}
if (!Args.hasArg(options::OPT_nostdlib)) {
if (!Args.hasArg(options::OPT_nodefaultlibs)) {
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--start-group");
if (Args.hasArg(options::OPT_fstack_protector) ||
Args.hasArg(options::OPT_fstack_protector_strong) ||
Args.hasArg(options::OPT_fstack_protector_all)) {
CmdArgs.push_back("-lssp_nonshared");
CmdArgs.push_back("-lssp");
}
if (Args.hasArg(options::OPT_fopenmp))
CmdArgs.push_back("-lgomp");
AddLibGCC(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lgmon");
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
// add system libraries
if (Args.hasArg(options::OPT_mwindows)) {
CmdArgs.push_back("-lgdi32");
CmdArgs.push_back("-lcomdlg32");
}
CmdArgs.push_back("-ladvapi32");
CmdArgs.push_back("-lshell32");
CmdArgs.push_back("-luser32");
CmdArgs.push_back("-lkernel32");
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--end-group");
else if (!LinkerName.equals_lower("lld"))
AddLibGCC(Args, CmdArgs);
}
if (!Args.hasArg(options::OPT_nostartfiles)) {
// Add crtfastmath.o if available and fast math is enabled.
TC.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
}
}
const char *Exec = Args.MakeArgString(TC.GetProgramPath(LinkerName.data()));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
/// XCore Tools
// We pass assemble and link construction to the xcc tool.
void XCore::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
CmdArgs.push_back("-c");
if (Args.hasArg(options::OPT_v))
CmdArgs.push_back("-v");
if (Arg *A = Args.getLastArg(options::OPT_g_Group))
if (!A->getOption().matches(options::OPT_g0))
CmdArgs.push_back("-g");
if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,
false))
CmdArgs.push_back("-fverbose-asm");
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("xcc"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void XCore::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (Args.hasArg(options::OPT_v))
CmdArgs.push_back("-v");
// Pass -fexceptions through to the linker if it was present.
if (Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
false))
CmdArgs.push_back("-fexceptions");
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("xcc"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void CrossWindows::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
const auto &TC =
static_cast<const toolchains::CrossWindowsToolChain &>(getToolChain());
ArgStringList CmdArgs;
const char *Exec;
switch (TC.getArch()) {
default:
llvm_unreachable("unsupported architecture");
case llvm::Triple::arm:
case llvm::Triple::thumb:
break;
case llvm::Triple::x86:
CmdArgs.push_back("--32");
break;
case llvm::Triple::x86_64:
CmdArgs.push_back("--64");
break;
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &Input : Inputs)
CmdArgs.push_back(Input.getFilename());
const std::string Assembler = TC.GetProgramPath("as");
Exec = Args.MakeArgString(Assembler);
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void CrossWindows::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &TC =
static_cast<const toolchains::CrossWindowsToolChain &>(getToolChain());
const llvm::Triple &T = TC.getTriple();
const Driver &D = TC.getDriver();
SmallString<128> EntryPoint;
ArgStringList CmdArgs;
const char *Exec;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo"
Args.ClaimAllArgs(options::OPT_w);
// Other warning options are already handled somewhere else.
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("--strip-all");
CmdArgs.push_back("-m");
switch (TC.getArch()) {
default:
llvm_unreachable("unsupported architecture");
case llvm::Triple::arm:
case llvm::Triple::thumb:
// FIXME: this is incorrect for WinCE
CmdArgs.push_back("thumb2pe");
break;
case llvm::Triple::x86:
CmdArgs.push_back("i386pe");
EntryPoint.append("_");
break;
case llvm::Triple::x86_64:
CmdArgs.push_back("i386pep");
break;
}
if (Args.hasArg(options::OPT_shared)) {
switch (T.getArch()) {
default:
llvm_unreachable("unsupported architecture");
case llvm::Triple::arm:
case llvm::Triple::thumb:
case llvm::Triple::x86_64:
EntryPoint.append("_DllMainCRTStartup");
break;
case llvm::Triple::x86:
EntryPoint.append("_DllMainCRTStartup@12");
break;
}
CmdArgs.push_back("-shared");
CmdArgs.push_back("-Bdynamic");
CmdArgs.push_back("--enable-auto-image-base");
CmdArgs.push_back("--entry");
CmdArgs.push_back(Args.MakeArgString(EntryPoint));
} else {
EntryPoint.append("mainCRTStartup");
CmdArgs.push_back(Args.hasArg(options::OPT_static) ? "-Bstatic"
: "-Bdynamic");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back("--entry");
CmdArgs.push_back(Args.MakeArgString(EntryPoint));
}
// FIXME: handle subsystem
}
// NOTE: deal with multiple definitions on Windows (e.g. COMDAT)
CmdArgs.push_back("--allow-multiple-definition");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_rdynamic)) {
SmallString<261> ImpLib(Output.getFilename());
llvm::sys::path::replace_extension(ImpLib, ".lib");
CmdArgs.push_back("--out-implib");
CmdArgs.push_back(Args.MakeArgString(ImpLib));
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
const std::string CRTPath(D.SysRoot + "/usr/lib/");
const char *CRTBegin;
CRTBegin =
Args.hasArg(options::OPT_shared) ? "crtbeginS.obj" : "crtbegin.obj";
CmdArgs.push_back(Args.MakeArgString(CRTPath + CRTBegin));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
TC.AddFilePathLibArgs(Args, CmdArgs);
AddLinkerInputs(TC, Inputs, Args, CmdArgs);
if (D.CCCIsCXX() && !Args.hasArg(options::OPT_nostdlib) &&
!Args.hasArg(options::OPT_nodefaultlibs)) {
bool StaticCXX = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (StaticCXX)
CmdArgs.push_back("-Bstatic");
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
if (StaticCXX)
CmdArgs.push_back("-Bdynamic");
}
if (!Args.hasArg(options::OPT_nostdlib)) {
if (!Args.hasArg(options::OPT_nodefaultlibs)) {
// TODO handle /MT[d] /MD[d]
CmdArgs.push_back("-lmsvcrt");
AddRunTimeLibs(TC, D, CmdArgs, Args);
}
}
if (TC.getSanitizerArgs().needsAsanRt()) {
// TODO handle /MT[d] /MD[d]
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dll_thunk"));
} else {
for (const auto &Lib : {"asan_dynamic", "asan_dynamic_runtime_thunk"})
CmdArgs.push_back(TC.getCompilerRTArgString(Args, Lib));
// Make sure the dynamic runtime thunk is not optimized out at link time
// to ensure proper SEH handling.
CmdArgs.push_back(Args.MakeArgString("--undefined"));
CmdArgs.push_back(Args.MakeArgString(TC.getArch() == llvm::Triple::x86
? "___asan_seh_interceptor"
: "__asan_seh_interceptor"));
}
}
Exec = Args.MakeArgString(TC.GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1);
const InputInfo &II = Inputs[0];
assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
II.getType() == types::TY_PP_CXX);
if (JA.getKind() == Action::PreprocessJobClass) {
Args.ClaimAllArgs();
CmdArgs.push_back("-E");
} else {
assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
CmdArgs.push_back("-S");
CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
}
CmdArgs.push_back("-DMYRIAD2");
// Append all -I, -iquote, -isystem paths, defines/undefines,
// 'f' flags, optimize flags, and warning options.
// These are spelled the same way in clang and moviCompile.
Args.AddAllArgsExcept(
CmdArgs,
{options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
options::OPT_D, options::OPT_U, options::OPT_f_Group,
options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ},
{options::OPT_fno_split_dwarf_inlining});
Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
// If we're producing a dependency file, and assembly is the final action,
// then the name of the target in the dependency file should be the '.o'
// file, not the '.s' file produced by this step. For example, instead of
// /tmp/mumble.s: mumble.c .../someheader.h
// the filename on the lefthand side should be "mumble.o"
if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
C.getActions().size() == 1 &&
C.getActions()[0]->getKind() == Action::AssembleJobClass) {
Arg *A = Args.getLastArg(options::OPT_o);
if (A) {
CmdArgs.push_back("-MT");
CmdArgs.push_back(Args.MakeArgString(A->getValue()));
}
}
CmdArgs.push_back(II.getFilename());
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
std::string Exec =
Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
CmdArgs, Inputs));
}
void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
assert(Inputs.size() == 1);
const InputInfo &II = Inputs[0];
assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
assert(Output.getType() == types::TY_Object);
CmdArgs.push_back("-no6thSlotCompression");
const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
if (CPUArg)
CmdArgs.push_back(
Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
CmdArgs.push_back("-noSPrefixing");
CmdArgs.push_back("-a"); // Mystery option.
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
A->claim();
CmdArgs.push_back(
Args.MakeArgString(std::string("-i:") + A->getValue(0)));
}
CmdArgs.push_back("-elf"); // Output format.
CmdArgs.push_back(II.getFilename());
CmdArgs.push_back(
Args.MakeArgString(std::string("-o:") + Output.getFilename()));
std::string Exec =
Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
CmdArgs, Inputs));
}
void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &TC =
static_cast<const toolchains::MyriadToolChain &>(getToolChain());
const llvm::Triple &T = TC.getTriple();
ArgStringList CmdArgs;
bool UseStartfiles =
!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
bool UseDefaultLibs =
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
if (T.getArch() == llvm::Triple::sparc)
CmdArgs.push_back("-EB");
else // SHAVE assumes little-endian, and sparcel is expressly so.
CmdArgs.push_back("-EL");
// The remaining logic is mostly like gnutools::Linker::ConstructJob,
// but we never pass through a --sysroot option and various other bits.
// For example, there are no sanitizers (yet) nor gold linker.
// Eat some arguments that may be present but have no effect.
Args.ClaimAllArgs(options::OPT_g_Group);
Args.ClaimAllArgs(options::OPT_w);
Args.ClaimAllArgs(options::OPT_static_libgcc);
if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
CmdArgs.push_back("-s");
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
if (UseStartfiles) {
// If you want startfiles, it means you want the builtin crti and crtbegin,
// but not crt0. Myriad link commands provide their own crt0.o as needed.
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_e, options::OPT_s, options::OPT_t,
options::OPT_Z_Flag, options::OPT_r});
TC.AddFilePathLibArgs(Args, CmdArgs);
bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
if (UseDefaultLibs) {
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(TC, CmdArgs);
if (C.getDriver().CCCIsCXX())
CmdArgs.push_back("-lstdc++");
if (T.getOS() == llvm::Triple::RTEMS) {
CmdArgs.push_back("--start-group");
CmdArgs.push_back("-lc");
// You must provide your own "-L" option to enable finding these.
CmdArgs.push_back("-lrtemscpu");
CmdArgs.push_back("-lrtemsbsp");
CmdArgs.push_back("--end-group");
} else {
CmdArgs.push_back("-lc");
}
CmdArgs.push_back("-lgcc");
}
if (UseStartfiles) {
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
}
std::string Exec =
Args.MakeArgString(TC.GetProgramPath("sparc-myriad-elf-ld"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
CmdArgs, Inputs));
}
void PS4cpu::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
assert(Inputs.size() == 1 && "Unexpected number of inputs.");
const InputInfo &Input = Inputs[0];
assert(Input.isFilename() && "Invalid input.");
CmdArgs.push_back(Input.getFilename());
const char *Exec =
Args.MakeArgString(getToolChain().GetProgramPath("orbis-as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
static void AddPS4SanitizerArgs(const ToolChain &TC, ArgStringList &CmdArgs) {
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
if (SanArgs.needsUbsanRt()) {
CmdArgs.push_back("-lSceDbgUBSanitizer_stub_weak");
}
if (SanArgs.needsAsanRt()) {
CmdArgs.push_back("-lSceDbgAddressSanitizer_stub_weak");
}
}
static void ConstructPS4LinkJob(const Tool &T, Compilation &C,
const JobAction &JA, const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) {
const toolchains::FreeBSD &ToolChain =
static_cast<const toolchains::FreeBSD &>(T.getToolChain());
const Driver &D = ToolChain.getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("--oformat=so");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
AddPS4SanitizerArgs(ToolChain, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_L);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_r);
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("--no-demangle");
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (Args.hasArg(options::OPT_pthread)) {
CmdArgs.push_back("-lpthread");
}
const char *Exec = Args.MakeArgString(ToolChain.GetProgramPath("orbis-ld"));
C.addCommand(llvm::make_unique<Command>(JA, T, Exec, CmdArgs, Inputs));
}
static void ConstructGoldLinkJob(const Tool &T, Compilation &C,
const JobAction &JA, const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) {
const toolchains::FreeBSD &ToolChain =
static_cast<const toolchains::FreeBSD &>(T.getToolChain());
const Driver &D = ToolChain.getDriver();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_pie))
CmdArgs.push_back("-pie");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
CmdArgs.push_back("--eh-frame-hdr");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-Bshareable");
} else {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/libexec/ld-elf.so.1");
}
CmdArgs.push_back("--enable-new-dtags");
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
AddPS4SanitizerArgs(ToolChain, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
const char *crt1 = nullptr;
if (!Args.hasArg(options::OPT_shared)) {
if (Args.hasArg(options::OPT_pg))
crt1 = "gcrt1.o";
else if (Args.hasArg(options::OPT_pie))
crt1 = "Scrt1.o";
else
crt1 = "crt1.o";
}
if (crt1)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
const char *crtbegin = nullptr;
if (Args.hasArg(options::OPT_static))
crtbegin = "crtbeginT.o";
else if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
crtbegin = "crtbeginS.o";
else
crtbegin = "crtbegin.o";
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
Args.AddAllArgs(CmdArgs, options::OPT_e);
Args.AddAllArgs(CmdArgs, options::OPT_s);
Args.AddAllArgs(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_r);
if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
CmdArgs.push_back("--no-demangle");
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
// For PS4, we always want to pass libm, libstdc++ and libkernel
// libraries for both C and C++ compilations.
CmdArgs.push_back("-lkernel");
if (D.CCCIsCXX()) {
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lm_p");
else
CmdArgs.push_back("-lm");
}
// FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
// the default system libraries. Just mimic this for now.
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lgcc_p");
else
CmdArgs.push_back("-lcompiler_rt");
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-lstdc++");
} else if (Args.hasArg(options::OPT_pg)) {
CmdArgs.push_back("-lgcc_eh_p");
} else {
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lstdc++");
CmdArgs.push_back("--no-as-needed");
}
if (Args.hasArg(options::OPT_pthread)) {
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lpthread_p");
else
CmdArgs.push_back("-lpthread");
}
if (Args.hasArg(options::OPT_pg)) {
if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("-lc");
else {
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("--start-group");
CmdArgs.push_back("-lc_p");
CmdArgs.push_back("-lpthread_p");
CmdArgs.push_back("--end-group");
} else {
CmdArgs.push_back("-lc_p");
}
}
CmdArgs.push_back("-lgcc_p");
} else {
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("--start-group");
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("--end-group");
} else {
CmdArgs.push_back("-lc");
}
CmdArgs.push_back("-lcompiler_rt");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-lstdc++");
} else if (Args.hasArg(options::OPT_pg)) {
CmdArgs.push_back("-lgcc_eh_p");
} else {
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lstdc++");
CmdArgs.push_back("--no-as-needed");
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
else
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
const char *Exec =
#ifdef LLVM_ON_WIN32
Args.MakeArgString(ToolChain.GetProgramPath("orbis-ld.gold"));
#else
Args.MakeArgString(ToolChain.GetProgramPath("orbis-ld"));
#endif
C.addCommand(llvm::make_unique<Command>(JA, T, Exec, CmdArgs, Inputs));
}
void PS4cpu::Link::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const toolchains::FreeBSD &ToolChain =
static_cast<const toolchains::FreeBSD &>(getToolChain());
const Driver &D = ToolChain.getDriver();
bool PS4Linker;
StringRef LinkerOptName;
if (const Arg *A = Args.getLastArg(options::OPT_fuse_ld_EQ)) {
LinkerOptName = A->getValue();
if (LinkerOptName != "ps4" && LinkerOptName != "gold")
D.Diag(diag::err_drv_unsupported_linker) << LinkerOptName;
}
if (LinkerOptName == "gold")
PS4Linker = false;
else if (LinkerOptName == "ps4")
PS4Linker = true;
else
PS4Linker = !Args.hasArg(options::OPT_shared);
if (PS4Linker)
ConstructPS4LinkJob(*this, C, JA, Output, Inputs, Args, LinkingOutput);
else
ConstructGoldLinkJob(*this, C, JA, Output, Inputs, Args, LinkingOutput);
}
void NVPTX::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &TC =
static_cast<const toolchains::CudaToolChain &>(getToolChain());
assert(TC.getTriple().isNVPTX() && "Wrong platform");
// Obtain architecture from the action.
CudaArch gpu_arch = StringToCudaArch(JA.getOffloadingArch());
assert(gpu_arch != CudaArch::UNKNOWN &&
"Device action expected to have an architecture.");
// Check that our installation's ptxas supports gpu_arch.
if (!Args.hasArg(options::OPT_no_cuda_version_check)) {
TC.cudaInstallation().CheckCudaVersionSupportsArch(gpu_arch);
}
ArgStringList CmdArgs;
CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-m64" : "-m32");
if (Args.hasFlag(options::OPT_cuda_noopt_device_debug,
options::OPT_no_cuda_noopt_device_debug, false)) {
// ptxas does not accept -g option if optimization is enabled, so
// we ignore the compiler's -O* options if we want debug info.
CmdArgs.push_back("-g");
CmdArgs.push_back("--dont-merge-basicblocks");
CmdArgs.push_back("--return-at-end");
} else if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
// Map the -O we received to -O{0,1,2,3}.
//
// TODO: Perhaps we should map host -O2 to ptxas -O3. -O3 is ptxas's
// default, so it may correspond more closely to the spirit of clang -O2.
// -O3 seems like the least-bad option when -Osomething is specified to
// clang but it isn't handled below.
StringRef OOpt = "3";
if (A->getOption().matches(options::OPT_O4) ||
A->getOption().matches(options::OPT_Ofast))
OOpt = "3";
else if (A->getOption().matches(options::OPT_O0))
OOpt = "0";
else if (A->getOption().matches(options::OPT_O)) {
// -Os, -Oz, and -O(anything else) map to -O2, for lack of better options.
OOpt = llvm::StringSwitch<const char *>(A->getValue())
.Case("1", "1")
.Case("2", "2")
.Case("3", "3")
.Case("s", "2")
.Case("z", "2")
.Default("2");
}
CmdArgs.push_back(Args.MakeArgString(llvm::Twine("-O") + OOpt));
} else {
// If no -O was passed, pass -O0 to ptxas -- no opt flag should correspond
// to no optimizations, but ptxas's default is -O3.
CmdArgs.push_back("-O0");
}
CmdArgs.push_back("--gpu-name");
CmdArgs.push_back(Args.MakeArgString(CudaArchToString(gpu_arch)));
CmdArgs.push_back("--output-file");
CmdArgs.push_back(Args.MakeArgString(Output.getFilename()));
for (const auto& II : Inputs)
CmdArgs.push_back(Args.MakeArgString(II.getFilename()));
for (const auto& A : Args.getAllArgValues(options::OPT_Xcuda_ptxas))
CmdArgs.push_back(Args.MakeArgString(A));
const char *Exec = Args.MakeArgString(TC.GetProgramPath("ptxas"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
// All inputs to this linker must be from CudaDeviceActions, as we need to look
// at the Inputs' Actions in order to figure out which GPU architecture they
// correspond to.
void NVPTX::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &TC =
static_cast<const toolchains::CudaToolChain &>(getToolChain());
assert(TC.getTriple().isNVPTX() && "Wrong platform");
ArgStringList CmdArgs;
CmdArgs.push_back("--cuda");
CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-64" : "-32");
CmdArgs.push_back(Args.MakeArgString("--create"));
CmdArgs.push_back(Args.MakeArgString(Output.getFilename()));
for (const auto& II : Inputs) {
auto *A = II.getAction();
assert(A->getInputs().size() == 1 &&
"Device offload action is expected to have a single input");
const char *gpu_arch_str = A->getOffloadingArch();
assert(gpu_arch_str &&
"Device action expected to have associated a GPU architecture!");
CudaArch gpu_arch = StringToCudaArch(gpu_arch_str);
// We need to pass an Arch of the form "sm_XX" for cubin files and
// "compute_XX" for ptx.
const char *Arch =
(II.getType() == types::TY_PP_Asm)
? CudaVirtualArchToString(VirtualArchForCudaArch(gpu_arch))
: gpu_arch_str;
CmdArgs.push_back(Args.MakeArgString(llvm::Twine("--image=profile=") +
Arch + ",file=" + II.getFilename()));
}
for (const auto& A : Args.getAllArgValues(options::OPT_Xcuda_fatbinary))
CmdArgs.push_back(Args.MakeArgString(A));
const char *Exec = Args.MakeArgString(TC.GetProgramPath("fatbinary"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
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