forked from OSchip/llvm-project
1448 lines
51 KiB
C++
1448 lines
51 KiB
C++
//===--- CommonArgs.cpp - Args handling for multiple toolchains -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "CommonArgs.h"
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#include "Arch/AArch64.h"
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#include "Arch/ARM.h"
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#include "Arch/Mips.h"
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#include "Arch/PPC.h"
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#include "Arch/SystemZ.h"
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#include "Arch/X86.h"
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#include "Hexagon.h"
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#include "InputInfo.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/ObjCRuntime.h"
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#include "clang/Basic/Version.h"
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#include "clang/Basic/VirtualFileSystem.h"
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#include "clang/Config/config.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Job.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/SanitizerArgs.h"
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#include "clang/Driver/ToolChain.h"
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#include "clang/Driver/Util.h"
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#include "clang/Driver/XRayArgs.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/CodeGen.h"
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#include "llvm/Support/Compression.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Process.h"
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#include "llvm/Support/Program.h"
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#include "llvm/Support/ScopedPrinter.h"
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#include "llvm/Support/TargetParser.h"
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#include "llvm/Support/YAMLParser.h"
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using namespace clang::driver;
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using namespace clang::driver::tools;
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using namespace clang;
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using namespace llvm::opt;
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void tools::addPathIfExists(const Driver &D, const Twine &Path,
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ToolChain::path_list &Paths) {
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if (D.getVFS().exists(Path))
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Paths.push_back(Path.str());
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}
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void tools::handleTargetFeaturesGroup(const ArgList &Args,
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std::vector<StringRef> &Features,
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OptSpecifier Group) {
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for (const Arg *A : Args.filtered(Group)) {
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StringRef Name = A->getOption().getName();
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A->claim();
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// Skip over "-m".
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assert(Name.startswith("m") && "Invalid feature name.");
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Name = Name.substr(1);
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bool IsNegative = Name.startswith("no-");
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if (IsNegative)
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Name = Name.substr(3);
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Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
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}
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}
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void tools::addDirectoryList(const ArgList &Args, ArgStringList &CmdArgs,
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const char *ArgName, const char *EnvVar) {
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const char *DirList = ::getenv(EnvVar);
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bool CombinedArg = false;
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if (!DirList)
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return; // Nothing to do.
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StringRef Name(ArgName);
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if (Name.equals("-I") || Name.equals("-L"))
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CombinedArg = true;
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StringRef Dirs(DirList);
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if (Dirs.empty()) // Empty string should not add '.'.
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return;
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StringRef::size_type Delim;
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while ((Delim = Dirs.find(llvm::sys::EnvPathSeparator)) != StringRef::npos) {
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if (Delim == 0) { // Leading colon.
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if (CombinedArg) {
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CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
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} else {
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CmdArgs.push_back(ArgName);
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CmdArgs.push_back(".");
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}
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} else {
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if (CombinedArg) {
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CmdArgs.push_back(
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Args.MakeArgString(std::string(ArgName) + Dirs.substr(0, Delim)));
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} else {
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CmdArgs.push_back(ArgName);
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CmdArgs.push_back(Args.MakeArgString(Dirs.substr(0, Delim)));
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}
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}
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Dirs = Dirs.substr(Delim + 1);
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}
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if (Dirs.empty()) { // Trailing colon.
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if (CombinedArg) {
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CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + "."));
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} else {
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CmdArgs.push_back(ArgName);
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CmdArgs.push_back(".");
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}
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} else { // Add the last path.
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if (CombinedArg) {
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CmdArgs.push_back(Args.MakeArgString(std::string(ArgName) + Dirs));
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} else {
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CmdArgs.push_back(ArgName);
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CmdArgs.push_back(Args.MakeArgString(Dirs));
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}
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}
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}
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void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
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const ArgList &Args, ArgStringList &CmdArgs,
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const JobAction &JA) {
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const Driver &D = TC.getDriver();
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// Add extra linker input arguments which are not treated as inputs
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// (constructed via -Xarch_).
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Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
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for (const auto &II : Inputs) {
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// If the current tool chain refers to an OpenMP or HIP offloading host, we
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// should ignore inputs that refer to OpenMP or HIP offloading devices -
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// they will be embedded according to a proper linker script.
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if (auto *IA = II.getAction())
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if ((JA.isHostOffloading(Action::OFK_OpenMP) &&
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IA->isDeviceOffloading(Action::OFK_OpenMP)) ||
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(JA.isHostOffloading(Action::OFK_HIP) &&
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IA->isDeviceOffloading(Action::OFK_HIP)))
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continue;
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if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
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// Don't try to pass LLVM inputs unless we have native support.
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D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
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// Add filenames immediately.
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if (II.isFilename()) {
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CmdArgs.push_back(II.getFilename());
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continue;
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}
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// Otherwise, this is a linker input argument.
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const Arg &A = II.getInputArg();
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// Handle reserved library options.
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if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
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TC.AddCXXStdlibLibArgs(Args, CmdArgs);
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else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
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TC.AddCCKextLibArgs(Args, CmdArgs);
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else if (A.getOption().matches(options::OPT_z)) {
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// Pass -z prefix for gcc linker compatibility.
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A.claim();
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A.render(Args, CmdArgs);
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} else {
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A.renderAsInput(Args, CmdArgs);
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}
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}
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// LIBRARY_PATH - included following the user specified library paths.
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// and only supported on native toolchains.
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if (!TC.isCrossCompiling()) {
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addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
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}
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}
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void tools::AddTargetFeature(const ArgList &Args,
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std::vector<StringRef> &Features,
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OptSpecifier OnOpt, OptSpecifier OffOpt,
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StringRef FeatureName) {
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if (Arg *A = Args.getLastArg(OnOpt, OffOpt)) {
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if (A->getOption().matches(OnOpt))
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Features.push_back(Args.MakeArgString("+" + FeatureName));
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else
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Features.push_back(Args.MakeArgString("-" + FeatureName));
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}
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}
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/// Get the (LLVM) name of the R600 gpu we are targeting.
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static std::string getR600TargetGPU(const ArgList &Args) {
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if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
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const char *GPUName = A->getValue();
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return llvm::StringSwitch<const char *>(GPUName)
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.Cases("rv630", "rv635", "r600")
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.Cases("rv610", "rv620", "rs780", "rs880")
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.Case("rv740", "rv770")
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.Case("palm", "cedar")
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.Cases("sumo", "sumo2", "sumo")
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.Case("hemlock", "cypress")
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.Case("aruba", "cayman")
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.Default(GPUName);
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}
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return "";
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}
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static std::string getNios2TargetCPU(const ArgList &Args) {
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Arg *A = Args.getLastArg(options::OPT_mcpu_EQ);
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if (!A)
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A = Args.getLastArg(options::OPT_march_EQ);
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if (!A)
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return "";
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const char *name = A->getValue();
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return llvm::StringSwitch<const char *>(name)
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.Case("r1", "nios2r1")
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.Case("r2", "nios2r2")
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.Default(name);
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}
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static std::string getLanaiTargetCPU(const ArgList &Args) {
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if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
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return A->getValue();
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}
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return "";
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}
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/// Get the (LLVM) name of the WebAssembly cpu we are targeting.
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static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
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// If we have -mcpu=, use that.
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if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
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StringRef CPU = A->getValue();
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#ifdef __wasm__
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// Handle "native" by examining the host. "native" isn't meaningful when
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// cross compiling, so only support this when the host is also WebAssembly.
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if (CPU == "native")
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return llvm::sys::getHostCPUName();
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#endif
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return CPU;
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}
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return "generic";
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}
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std::string tools::getCPUName(const ArgList &Args, const llvm::Triple &T,
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bool FromAs) {
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Arg *A;
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switch (T.getArch()) {
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default:
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return "";
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case llvm::Triple::aarch64:
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case llvm::Triple::aarch64_be:
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return aarch64::getAArch64TargetCPU(Args, A);
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case llvm::Triple::arm:
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case llvm::Triple::armeb:
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case llvm::Triple::thumb:
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case llvm::Triple::thumbeb: {
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StringRef MArch, MCPU;
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arm::getARMArchCPUFromArgs(Args, MArch, MCPU, FromAs);
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return arm::getARMTargetCPU(MCPU, MArch, T);
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}
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case llvm::Triple::avr:
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if (const Arg *A = Args.getLastArg(options::OPT_mmcu_EQ))
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return A->getValue();
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return "";
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case llvm::Triple::nios2: {
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return getNios2TargetCPU(Args);
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}
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case llvm::Triple::mips:
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case llvm::Triple::mipsel:
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el: {
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StringRef CPUName;
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StringRef ABIName;
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mips::getMipsCPUAndABI(Args, T, CPUName, ABIName);
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return CPUName;
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}
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case llvm::Triple::nvptx:
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case llvm::Triple::nvptx64:
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if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
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return A->getValue();
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return "";
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case llvm::Triple::ppc:
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case llvm::Triple::ppc64:
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case llvm::Triple::ppc64le: {
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std::string TargetCPUName = ppc::getPPCTargetCPU(Args);
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// LLVM may default to generating code for the native CPU,
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// but, like gcc, we default to a more generic option for
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// each architecture. (except on Darwin)
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if (TargetCPUName.empty() && !T.isOSDarwin()) {
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if (T.getArch() == llvm::Triple::ppc64)
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TargetCPUName = "ppc64";
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else if (T.getArch() == llvm::Triple::ppc64le)
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TargetCPUName = "ppc64le";
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else
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TargetCPUName = "ppc";
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}
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return TargetCPUName;
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}
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case llvm::Triple::bpfel:
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case llvm::Triple::bpfeb:
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case llvm::Triple::sparc:
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case llvm::Triple::sparcel:
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case llvm::Triple::sparcv9:
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if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
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return A->getValue();
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return "";
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case llvm::Triple::x86:
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case llvm::Triple::x86_64:
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return x86::getX86TargetCPU(Args, T);
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case llvm::Triple::hexagon:
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return "hexagon" +
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toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
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case llvm::Triple::lanai:
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return getLanaiTargetCPU(Args);
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case llvm::Triple::systemz:
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return systemz::getSystemZTargetCPU(Args);
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case llvm::Triple::r600:
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case llvm::Triple::amdgcn:
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return getR600TargetGPU(Args);
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case llvm::Triple::wasm32:
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case llvm::Triple::wasm64:
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return getWebAssemblyTargetCPU(Args);
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}
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}
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unsigned tools::getLTOParallelism(const ArgList &Args, const Driver &D) {
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unsigned Parallelism = 0;
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Arg *LtoJobsArg = Args.getLastArg(options::OPT_flto_jobs_EQ);
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if (LtoJobsArg &&
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StringRef(LtoJobsArg->getValue()).getAsInteger(10, Parallelism))
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D.Diag(diag::err_drv_invalid_int_value) << LtoJobsArg->getAsString(Args)
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<< LtoJobsArg->getValue();
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return Parallelism;
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}
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// CloudABI uses -ffunction-sections and -fdata-sections by default.
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bool tools::isUseSeparateSections(const llvm::Triple &Triple) {
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return Triple.getOS() == llvm::Triple::CloudABI;
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}
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void tools::AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
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ArgStringList &CmdArgs, const InputInfo &Output,
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const InputInfo &Input, bool IsThinLTO) {
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// Tell the linker to load the plugin. This has to come before AddLinkerInputs
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// as gold requires -plugin to come before any -plugin-opt that -Wl might
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// forward.
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CmdArgs.push_back("-plugin");
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#if defined(_WIN32)
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const char *Suffix = ".dll";
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#elif defined(__APPLE__)
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const char *Suffix = ".dylib";
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#else
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const char *Suffix = ".so";
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#endif
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SmallString<1024> Plugin;
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llvm::sys::path::native(Twine(ToolChain.getDriver().Dir) +
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"/../lib" CLANG_LIBDIR_SUFFIX "/LLVMgold" +
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Suffix,
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Plugin);
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CmdArgs.push_back(Args.MakeArgString(Plugin));
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// Try to pass driver level flags relevant to LTO code generation down to
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// the plugin.
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// Handle flags for selecting CPU variants.
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std::string CPU = getCPUName(Args, ToolChain.getTriple());
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if (!CPU.empty())
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CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
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if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
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StringRef OOpt;
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if (A->getOption().matches(options::OPT_O4) ||
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A->getOption().matches(options::OPT_Ofast))
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OOpt = "3";
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else if (A->getOption().matches(options::OPT_O))
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OOpt = A->getValue();
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else if (A->getOption().matches(options::OPT_O0))
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OOpt = "0";
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if (!OOpt.empty())
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CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
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}
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if (Args.hasArg(options::OPT_gsplit_dwarf)) {
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CmdArgs.push_back(
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Args.MakeArgString(Twine("-plugin-opt=dwo_dir=") +
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Output.getFilename() + "_dwo"));
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}
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if (IsThinLTO)
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CmdArgs.push_back("-plugin-opt=thinlto");
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if (unsigned Parallelism = getLTOParallelism(Args, ToolChain.getDriver()))
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CmdArgs.push_back(
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Args.MakeArgString("-plugin-opt=jobs=" + Twine(Parallelism)));
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// If an explicit debugger tuning argument appeared, pass it along.
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if (Arg *A = Args.getLastArg(options::OPT_gTune_Group,
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options::OPT_ggdbN_Group)) {
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if (A->getOption().matches(options::OPT_glldb))
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CmdArgs.push_back("-plugin-opt=-debugger-tune=lldb");
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else if (A->getOption().matches(options::OPT_gsce))
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CmdArgs.push_back("-plugin-opt=-debugger-tune=sce");
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else
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CmdArgs.push_back("-plugin-opt=-debugger-tune=gdb");
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}
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bool UseSeparateSections =
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isUseSeparateSections(ToolChain.getEffectiveTriple());
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if (Args.hasFlag(options::OPT_ffunction_sections,
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options::OPT_fno_function_sections, UseSeparateSections)) {
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CmdArgs.push_back("-plugin-opt=-function-sections");
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}
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if (Args.hasFlag(options::OPT_fdata_sections, options::OPT_fno_data_sections,
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UseSeparateSections)) {
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CmdArgs.push_back("-plugin-opt=-data-sections");
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}
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if (Arg *A = getLastProfileSampleUseArg(Args)) {
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StringRef FName = A->getValue();
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if (!llvm::sys::fs::exists(FName))
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ToolChain.getDriver().Diag(diag::err_drv_no_such_file) << FName;
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else
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CmdArgs.push_back(
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Args.MakeArgString(Twine("-plugin-opt=sample-profile=") + FName));
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}
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// Need this flag to turn on new pass manager via Gold plugin.
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if (Args.hasFlag(options::OPT_fexperimental_new_pass_manager,
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options::OPT_fno_experimental_new_pass_manager,
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/* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER)) {
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CmdArgs.push_back("-plugin-opt=new-pass-manager");
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}
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// Setup statistics file output.
|
|
SmallString<128> StatsFile =
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getStatsFileName(Args, Output, Input, ToolChain.getDriver());
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|
if (!StatsFile.empty())
|
|
CmdArgs.push_back(
|
|
Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
|
|
}
|
|
|
|
void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
|
|
ArgStringList &CmdArgs) {
|
|
if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
|
|
options::OPT_fno_rtlib_add_rpath, false))
|
|
return;
|
|
|
|
std::string CandidateRPath = TC.getArchSpecificLibPath();
|
|
if (TC.getVFS().exists(CandidateRPath)) {
|
|
CmdArgs.push_back("-rpath");
|
|
CmdArgs.push_back(Args.MakeArgString(CandidateRPath.c_str()));
|
|
}
|
|
}
|
|
|
|
bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
|
|
const ArgList &Args, bool IsOffloadingHost,
|
|
bool GompNeedsRT) {
|
|
if (!Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
|
|
options::OPT_fno_openmp, false))
|
|
return false;
|
|
|
|
switch (TC.getDriver().getOpenMPRuntime(Args)) {
|
|
case Driver::OMPRT_OMP:
|
|
CmdArgs.push_back("-lomp");
|
|
break;
|
|
case Driver::OMPRT_GOMP:
|
|
CmdArgs.push_back("-lgomp");
|
|
|
|
if (GompNeedsRT)
|
|
CmdArgs.push_back("-lrt");
|
|
break;
|
|
case Driver::OMPRT_IOMP5:
|
|
CmdArgs.push_back("-liomp5");
|
|
break;
|
|
case Driver::OMPRT_Unknown:
|
|
// Already diagnosed.
|
|
return false;
|
|
}
|
|
|
|
if (IsOffloadingHost)
|
|
CmdArgs.push_back("-lomptarget");
|
|
|
|
addArchSpecificRPath(TC, Args, CmdArgs);
|
|
|
|
return true;
|
|
}
|
|
|
|
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");
|
|
|
|
if (IsShared) {
|
|
addArchSpecificRPath(TC, Args, CmdArgs);
|
|
}
|
|
}
|
|
|
|
// 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) {
|
|
// Solaris ld defaults to --export-dynamic behaviour but doesn't support
|
|
// the option, so don't try to pass it.
|
|
if (TC.getTriple().getOS() == llvm::Triple::Solaris)
|
|
return true;
|
|
// Myriad is static linking only. Furthermore, some versions of its
|
|
// linker have the bug where --export-dynamic overrides -static, so
|
|
// don't use --export-dynamic on that platform.
|
|
if (TC.getTriple().getVendor() == llvm::Triple::Myriad)
|
|
return true;
|
|
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;
|
|
}
|
|
|
|
void tools::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 & Android.
|
|
if (TC.getTriple().getOS() != llvm::Triple::RTEMS &&
|
|
!TC.getTriple().isAndroid()) {
|
|
CmdArgs.push_back("-lpthread");
|
|
if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
|
|
CmdArgs.push_back("-lrt");
|
|
}
|
|
CmdArgs.push_back("-lm");
|
|
// There's no libdl on all OSes.
|
|
if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
|
|
TC.getTriple().getOS() != llvm::Triple::NetBSD &&
|
|
TC.getTriple().getOS() != llvm::Triple::OpenBSD &&
|
|
TC.getTriple().getOS() != llvm::Triple::RTEMS)
|
|
CmdArgs.push_back("-ldl");
|
|
// Required for backtrace on some OSes
|
|
if (TC.getTriple().getOS() == llvm::Triple::NetBSD ||
|
|
TC.getTriple().getOS() == llvm::Triple::FreeBSD)
|
|
CmdArgs.push_back("-lexecinfo");
|
|
}
|
|
|
|
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.needsSharedRt()) {
|
|
if (SanArgs.needsAsanRt()) {
|
|
SharedRuntimes.push_back("asan");
|
|
if (!Args.hasArg(options::OPT_shared) && !TC.getTriple().isAndroid())
|
|
HelperStaticRuntimes.push_back("asan-preinit");
|
|
}
|
|
if (SanArgs.needsUbsanRt()) {
|
|
if (SanArgs.requiresMinimalRuntime())
|
|
SharedRuntimes.push_back("ubsan_minimal");
|
|
else
|
|
SharedRuntimes.push_back("ubsan_standalone");
|
|
}
|
|
if (SanArgs.needsScudoRt()) {
|
|
if (SanArgs.requiresMinimalRuntime())
|
|
SharedRuntimes.push_back("scudo_minimal");
|
|
else
|
|
SharedRuntimes.push_back("scudo");
|
|
}
|
|
if (SanArgs.needsHwasanRt())
|
|
SharedRuntimes.push_back("hwasan");
|
|
}
|
|
|
|
// 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) || SanArgs.needsSharedRt()) {
|
|
// Don't link static runtimes into DSOs or if -shared-libasan.
|
|
return;
|
|
}
|
|
if (SanArgs.needsAsanRt()) {
|
|
StaticRuntimes.push_back("asan");
|
|
if (SanArgs.linkCXXRuntimes())
|
|
StaticRuntimes.push_back("asan_cxx");
|
|
}
|
|
|
|
if (SanArgs.needsHwasanRt()) {
|
|
StaticRuntimes.push_back("hwasan");
|
|
if (SanArgs.linkCXXRuntimes())
|
|
StaticRuntimes.push_back("hwasan_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()) {
|
|
if (SanArgs.requiresMinimalRuntime()) {
|
|
StaticRuntimes.push_back("ubsan_minimal");
|
|
} else {
|
|
StaticRuntimes.push_back("ubsan_standalone");
|
|
if (SanArgs.linkCXXRuntimes())
|
|
StaticRuntimes.push_back("ubsan_standalone_cxx");
|
|
}
|
|
}
|
|
if (SanArgs.needsSafeStackRt()) {
|
|
NonWholeStaticRuntimes.push_back("safestack");
|
|
RequiredSymbols.push_back("__safestack_init");
|
|
}
|
|
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");
|
|
if (SanArgs.needsScudoRt()) {
|
|
if (SanArgs.requiresMinimalRuntime()) {
|
|
StaticRuntimes.push_back("scudo_minimal");
|
|
if (SanArgs.linkCXXRuntimes())
|
|
StaticRuntimes.push_back("scudo_cxx_minimal");
|
|
} else {
|
|
StaticRuntimes.push_back("scudo");
|
|
if (SanArgs.linkCXXRuntimes())
|
|
StaticRuntimes.push_back("scudo_cxx");
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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.
|
|
bool tools::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);
|
|
|
|
// Inject libfuzzer dependencies.
|
|
if (TC.getSanitizerArgs().needsFuzzer()
|
|
&& !Args.hasArg(options::OPT_shared)) {
|
|
|
|
addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
|
|
if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
|
|
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
|
|
}
|
|
|
|
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() || !NonWholeStaticRuntimes.empty();
|
|
}
|
|
|
|
bool tools::addXRayRuntime(const ToolChain&TC, const ArgList &Args, ArgStringList &CmdArgs) {
|
|
if (Args.hasArg(options::OPT_shared))
|
|
return false;
|
|
|
|
if (TC.getXRayArgs().needsXRayRt()) {
|
|
CmdArgs.push_back("-whole-archive");
|
|
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
|
|
for (const auto &Mode : TC.getXRayArgs().modeList())
|
|
CmdArgs.push_back(TC.getCompilerRTArgString(Args, Mode, false));
|
|
CmdArgs.push_back("-no-whole-archive");
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void tools::linkXRayRuntimeDeps(const ToolChain &TC, ArgStringList &CmdArgs) {
|
|
CmdArgs.push_back("--no-as-needed");
|
|
CmdArgs.push_back("-lpthread");
|
|
if (TC.getTriple().getOS() != llvm::Triple::OpenBSD)
|
|
CmdArgs.push_back("-lrt");
|
|
CmdArgs.push_back("-lm");
|
|
|
|
if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
|
|
TC.getTriple().getOS() != llvm::Triple::NetBSD &&
|
|
TC.getTriple().getOS() != llvm::Triple::OpenBSD)
|
|
CmdArgs.push_back("-ldl");
|
|
}
|
|
|
|
bool tools::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;
|
|
}
|
|
|
|
const char *tools::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);
|
|
}
|
|
}
|
|
|
|
void tools::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(CLANG_DEFAULT_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));
|
|
}
|
|
|
|
// 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.
|
|
void tools::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);
|
|
}
|
|
|
|
Arg *tools::getLastProfileUseArg(const ArgList &Args) {
|
|
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;
|
|
|
|
return ProfileUseArg;
|
|
}
|
|
|
|
Arg *tools::getLastProfileSampleUseArg(const ArgList &Args) {
|
|
auto *ProfileSampleUseArg = Args.getLastArg(
|
|
options::OPT_fprofile_sample_use, options::OPT_fprofile_sample_use_EQ,
|
|
options::OPT_fauto_profile, options::OPT_fauto_profile_EQ,
|
|
options::OPT_fno_profile_sample_use, options::OPT_fno_auto_profile);
|
|
|
|
if (ProfileSampleUseArg &&
|
|
(ProfileSampleUseArg->getOption().matches(
|
|
options::OPT_fno_profile_sample_use) ||
|
|
ProfileSampleUseArg->getOption().matches(options::OPT_fno_auto_profile)))
|
|
return nullptr;
|
|
|
|
return Args.getLastArg(options::OPT_fprofile_sample_use_EQ,
|
|
options::OPT_fauto_profile_EQ);
|
|
}
|
|
|
|
/// 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).
|
|
std::tuple<llvm::Reloc::Model, unsigned, bool>
|
|
tools::ParsePICArgs(const ToolChain &ToolChain, const ArgList &Args) {
|
|
const llvm::Triple &EffectiveTriple = ToolChain.getEffectiveTriple();
|
|
const llvm::Triple &Triple = ToolChain.getTriple();
|
|
|
|
bool PIE = ToolChain.isPIEDefault();
|
|
bool PIC = PIE || ToolChain.isPICDefault();
|
|
// The Darwin/MachO default to use PIC does not apply when using -static.
|
|
if (Triple.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 (Triple.isAndroid()) {
|
|
switch (Triple.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 (Triple.getOS() == llvm::Triple::OpenBSD) {
|
|
switch (ToolChain.getArch()) {
|
|
case llvm::Triple::arm:
|
|
case llvm::Triple::aarch64:
|
|
case llvm::Triple::mips64:
|
|
case llvm::Triple::mips64el:
|
|
case llvm::Triple::x86:
|
|
case llvm::Triple::x86_64:
|
|
IsPICLevelTwo = false; // "-fpie"
|
|
break;
|
|
|
|
case llvm::Triple::ppc:
|
|
case llvm::Triple::sparc:
|
|
case llvm::Triple::sparcel:
|
|
case llvm::Triple::sparcv9:
|
|
IsPICLevelTwo = true; // "-fPIE"
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// AMDGPU-specific defaults for PIC.
|
|
if (Triple.getArch() == llvm::Triple::amdgcn)
|
|
PIC = true;
|
|
|
|
// 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);
|
|
if (Triple.isOSWindows() && LastPICArg &&
|
|
LastPICArg ==
|
|
Args.getLastArg(options::OPT_fPIC, options::OPT_fpic,
|
|
options::OPT_fPIE, options::OPT_fpie)) {
|
|
ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
|
|
<< LastPICArg->getSpelling() << Triple.str();
|
|
if (Triple.getArch() == llvm::Triple::x86_64)
|
|
return std::make_tuple(llvm::Reloc::PIC_, 2U, false);
|
|
return std::make_tuple(llvm::Reloc::Static, 0U, false);
|
|
}
|
|
|
|
// 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 (EffectiveTriple.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 && (Triple.isOSDarwin() || EffectiveTriple.isPS4CPU()))
|
|
IsPICLevelTwo |= ToolChain.isPICDefault();
|
|
|
|
// This kernel flags are a trump-card: they will disable PIC/PIE
|
|
// generation, independent of the argument order.
|
|
if (KernelOrKext &&
|
|
((!EffectiveTriple.isiOS() || EffectiveTriple.isOSVersionLT(6)) &&
|
|
!EffectiveTriple.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 (!Triple.isOSDarwin())
|
|
ToolChain.getDriver().Diag(diag::err_drv_unsupported_opt_for_target)
|
|
<< A->getSpelling() << Triple.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 (Triple.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() << Triple.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() << Triple.str();
|
|
RWPI = true;
|
|
}
|
|
|
|
// ROPI and RWPI are not compatible with PIC or PIE.
|
|
if ((ROPI || RWPI) && (PIC || PIE))
|
|
ToolChain.getDriver().Diag(diag::err_drv_ropi_rwpi_incompatible_with_pic);
|
|
|
|
if (Triple.isMIPS()) {
|
|
StringRef CPUName;
|
|
StringRef ABIName;
|
|
mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
|
|
// When targeting the N64 ABI, PIC is the default, except in the case
|
|
// when the -mno-abicalls option is used. In that case we exit
|
|
// at next check regardless of PIC being set below.
|
|
if (ABIName == "n64")
|
|
PIC = true;
|
|
// When targettng MIPS with -mno-abicalls, it's always static.
|
|
if(Args.hasArg(options::OPT_mno_abicalls))
|
|
return std::make_tuple(llvm::Reloc::Static, 0U, false);
|
|
// Unlike other architectures, MIPS, even with -fPIC/-mxgot/multigot,
|
|
// does not use PIC level 2 for historical reasons.
|
|
IsPICLevelTwo = false;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
// `-falign-functions` indicates that the functions should be aligned to a
|
|
// 16-byte boundary.
|
|
//
|
|
// `-falign-functions=1` is the same as `-fno-align-functions`.
|
|
//
|
|
// The scalar `n` in `-falign-functions=n` must be an integral value between
|
|
// [0, 65536]. If the value is not a power-of-two, it will be rounded up to
|
|
// the nearest power-of-two.
|
|
//
|
|
// If we return `0`, the frontend will default to the backend's preferred
|
|
// alignment.
|
|
//
|
|
// NOTE: icc only allows values between [0, 4096]. icc uses `-falign-functions`
|
|
// to mean `-falign-functions=16`. GCC defaults to the backend's preferred
|
|
// alignment. For unaligned functions, we default to the backend's preferred
|
|
// alignment.
|
|
unsigned tools::ParseFunctionAlignment(const ToolChain &TC,
|
|
const ArgList &Args) {
|
|
const Arg *A = Args.getLastArg(options::OPT_falign_functions,
|
|
options::OPT_falign_functions_EQ,
|
|
options::OPT_fno_align_functions);
|
|
if (!A || A->getOption().matches(options::OPT_fno_align_functions))
|
|
return 0;
|
|
|
|
if (A->getOption().matches(options::OPT_falign_functions))
|
|
return 0;
|
|
|
|
unsigned Value = 0;
|
|
if (StringRef(A->getValue()).getAsInteger(10, Value) || Value > 65536)
|
|
TC.getDriver().Diag(diag::err_drv_invalid_int_value)
|
|
<< A->getAsString(Args) << A->getValue();
|
|
return Value ? llvm::Log2_32_Ceil(std::min(Value, 65536u)) : Value;
|
|
}
|
|
|
|
void tools::AddAssemblerKPIC(const ToolChain &ToolChain, const ArgList &Args,
|
|
ArgStringList &CmdArgs) {
|
|
llvm::Reloc::Model RelocationModel;
|
|
unsigned PICLevel;
|
|
bool IsPIE;
|
|
std::tie(RelocationModel, PICLevel, IsPIE) = ParsePICArgs(ToolChain, Args);
|
|
|
|
if (RelocationModel != llvm::Reloc::Static)
|
|
CmdArgs.push_back("-KPIC");
|
|
}
|
|
|
|
/// Determine whether Objective-C automated reference counting is
|
|
/// enabled.
|
|
bool tools::isObjCAutoRefCount(const ArgList &Args) {
|
|
return Args.hasFlag(options::OPT_fobjc_arc, options::OPT_fno_objc_arc, false);
|
|
}
|
|
|
|
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");
|
|
}
|
|
|
|
void tools::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:
|
|
CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins"));
|
|
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;
|
|
}
|
|
}
|
|
|
|
/// Add OpenMP linker script arguments at the end of the argument list so that
|
|
/// the fat binary is built by embedding each of the device images into the
|
|
/// host. The linker script also defines a few symbols required by the code
|
|
/// generation so that the images can be easily retrieved at runtime by the
|
|
/// offloading library. This should be used only in tool chains that support
|
|
/// linker scripts.
|
|
void tools::AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
|
|
const InputInfo &Output,
|
|
const InputInfoList &Inputs,
|
|
const ArgList &Args, ArgStringList &CmdArgs,
|
|
const JobAction &JA) {
|
|
|
|
// If this is not an OpenMP host toolchain, we don't need to do anything.
|
|
if (!JA.isHostOffloading(Action::OFK_OpenMP))
|
|
return;
|
|
|
|
// Create temporary linker script. Keep it if save-temps is enabled.
|
|
const char *LKS;
|
|
SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
|
|
if (C.getDriver().isSaveTempsEnabled()) {
|
|
llvm::sys::path::replace_extension(Name, "lk");
|
|
LKS = C.getArgs().MakeArgString(Name.c_str());
|
|
} else {
|
|
llvm::sys::path::replace_extension(Name, "");
|
|
Name = C.getDriver().GetTemporaryPath(Name, "lk");
|
|
LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
|
|
}
|
|
|
|
// Add linker script option to the command.
|
|
CmdArgs.push_back("-T");
|
|
CmdArgs.push_back(LKS);
|
|
|
|
// Create a buffer to write the contents of the linker script.
|
|
std::string LksBuffer;
|
|
llvm::raw_string_ostream LksStream(LksBuffer);
|
|
|
|
// Get the OpenMP offload tool chains so that we can extract the triple
|
|
// associated with each device input.
|
|
auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
|
|
assert(OpenMPToolChains.first != OpenMPToolChains.second &&
|
|
"No OpenMP toolchains??");
|
|
|
|
// Track the input file name and device triple in order to build the script,
|
|
// inserting binaries in the designated sections.
|
|
SmallVector<std::pair<std::string, const char *>, 8> InputBinaryInfo;
|
|
|
|
// Add commands to embed target binaries. We ensure that each section and
|
|
// image is 16-byte aligned. This is not mandatory, but increases the
|
|
// likelihood of data to be aligned with a cache block in several main host
|
|
// machines.
|
|
LksStream << "/*\n";
|
|
LksStream << " OpenMP Offload Linker Script\n";
|
|
LksStream << " *** Automatically generated by Clang ***\n";
|
|
LksStream << "*/\n";
|
|
LksStream << "TARGET(binary)\n";
|
|
auto DTC = OpenMPToolChains.first;
|
|
for (auto &II : Inputs) {
|
|
const Action *A = II.getAction();
|
|
// Is this a device linking action?
|
|
if (A && isa<LinkJobAction>(A) &&
|
|
A->isDeviceOffloading(Action::OFK_OpenMP)) {
|
|
assert(DTC != OpenMPToolChains.second &&
|
|
"More device inputs than device toolchains??");
|
|
InputBinaryInfo.push_back(std::make_pair(
|
|
DTC->second->getTriple().normalize(), II.getFilename()));
|
|
++DTC;
|
|
LksStream << "INPUT(" << II.getFilename() << ")\n";
|
|
}
|
|
}
|
|
|
|
assert(DTC == OpenMPToolChains.second &&
|
|
"Less device inputs than device toolchains??");
|
|
|
|
LksStream << "SECTIONS\n";
|
|
LksStream << "{\n";
|
|
|
|
// Put each target binary into a separate section.
|
|
for (const auto &BI : InputBinaryInfo) {
|
|
LksStream << " .omp_offloading." << BI.first << " :\n";
|
|
LksStream << " ALIGN(0x10)\n";
|
|
LksStream << " {\n";
|
|
LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
|
|
<< " = .);\n";
|
|
LksStream << " " << BI.second << "\n";
|
|
LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
|
|
<< " = .);\n";
|
|
LksStream << " }\n";
|
|
}
|
|
|
|
// Add commands to define host entries begin and end. We use 1-byte subalign
|
|
// so that the linker does not add any padding and the elements in this
|
|
// section form an array.
|
|
LksStream << " .omp_offloading.entries :\n";
|
|
LksStream << " ALIGN(0x10)\n";
|
|
LksStream << " SUBALIGN(0x01)\n";
|
|
LksStream << " {\n";
|
|
LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
|
|
LksStream << " *(.omp_offloading.entries)\n";
|
|
LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
|
|
LksStream << " }\n";
|
|
LksStream << "}\n";
|
|
LksStream << "INSERT BEFORE .data\n";
|
|
LksStream.flush();
|
|
|
|
// Dump the contents of the linker script if the user requested that. We
|
|
// support this option to enable testing of behavior with -###.
|
|
if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
|
|
llvm::errs() << LksBuffer;
|
|
|
|
// If this is a dry run, do not create the linker script file.
|
|
if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
|
|
return;
|
|
|
|
// Open script file and write the contents.
|
|
std::error_code EC;
|
|
llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
|
|
|
|
if (EC) {
|
|
C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
|
|
return;
|
|
}
|
|
|
|
Lksf << LksBuffer;
|
|
}
|
|
|
|
/// Add HIP linker script arguments at the end of the argument list so that
|
|
/// the fat binary is built by embedding the device images into the host. The
|
|
/// linker script also defines a symbol required by the code generation so that
|
|
/// the image can be retrieved at runtime. This should be used only in tool
|
|
/// chains that support linker scripts.
|
|
void tools::AddHIPLinkerScript(const ToolChain &TC, Compilation &C,
|
|
const InputInfo &Output,
|
|
const InputInfoList &Inputs, const ArgList &Args,
|
|
ArgStringList &CmdArgs, const JobAction &JA,
|
|
const Tool &T) {
|
|
|
|
// If this is not a HIP host toolchain, we don't need to do anything.
|
|
if (!JA.isHostOffloading(Action::OFK_HIP))
|
|
return;
|
|
|
|
// Create temporary linker script. Keep it if save-temps is enabled.
|
|
const char *LKS;
|
|
SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
|
|
if (C.getDriver().isSaveTempsEnabled()) {
|
|
llvm::sys::path::replace_extension(Name, "lk");
|
|
LKS = C.getArgs().MakeArgString(Name.c_str());
|
|
} else {
|
|
llvm::sys::path::replace_extension(Name, "");
|
|
Name = C.getDriver().GetTemporaryPath(Name, "lk");
|
|
LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
|
|
}
|
|
|
|
// Add linker script option to the command.
|
|
CmdArgs.push_back("-T");
|
|
CmdArgs.push_back(LKS);
|
|
|
|
// Create a buffer to write the contents of the linker script.
|
|
std::string LksBuffer;
|
|
llvm::raw_string_ostream LksStream(LksBuffer);
|
|
|
|
// Get the HIP offload tool chain.
|
|
auto *HIPTC = static_cast<const toolchains::CudaToolChain *>(
|
|
C.getSingleOffloadToolChain<Action::OFK_HIP>());
|
|
assert(HIPTC->getTriple().getArch() == llvm::Triple::amdgcn &&
|
|
"Wrong platform");
|
|
(void)HIPTC;
|
|
|
|
// Construct clang-offload-bundler command to bundle object files for
|
|
// for different GPU archs.
|
|
ArgStringList BundlerArgs;
|
|
BundlerArgs.push_back(Args.MakeArgString("-type=o"));
|
|
|
|
// ToDo: Remove the dummy host binary entry which is required by
|
|
// clang-offload-bundler.
|
|
std::string BundlerTargetArg = "-targets=host-x86_64-unknown-linux";
|
|
std::string BundlerInputArg = "-inputs=/dev/null";
|
|
|
|
for (const auto &II : Inputs) {
|
|
const Action *A = II.getAction();
|
|
// Is this a device linking action?
|
|
if (A && isa<LinkJobAction>(A) && A->isDeviceOffloading(Action::OFK_HIP)) {
|
|
BundlerTargetArg = BundlerTargetArg + ",hip-amdgcn-amd-amdhsa-" +
|
|
StringRef(A->getOffloadingArch()).str();
|
|
BundlerInputArg = BundlerInputArg + "," + II.getFilename();
|
|
}
|
|
}
|
|
BundlerArgs.push_back(Args.MakeArgString(BundlerTargetArg));
|
|
BundlerArgs.push_back(Args.MakeArgString(BundlerInputArg));
|
|
|
|
std::string BundleFileName = C.getDriver().GetTemporaryPath("BUNDLE", "o");
|
|
const char *BundleFile =
|
|
C.addTempFile(C.getArgs().MakeArgString(BundleFileName.c_str()));
|
|
auto BundlerOutputArg =
|
|
Args.MakeArgString(std::string("-outputs=").append(BundleFile));
|
|
BundlerArgs.push_back(BundlerOutputArg);
|
|
|
|
SmallString<128> BundlerPath(C.getDriver().Dir);
|
|
llvm::sys::path::append(BundlerPath, "clang-offload-bundler");
|
|
const char *Bundler = Args.MakeArgString(BundlerPath);
|
|
C.addCommand(llvm::make_unique<Command>(JA, T, Bundler, BundlerArgs, Inputs));
|
|
|
|
// Add commands to embed target binaries. We ensure that each section and
|
|
// image is 16-byte aligned. This is not mandatory, but increases the
|
|
// likelihood of data to be aligned with a cache block in several main host
|
|
// machines.
|
|
LksStream << "/*\n";
|
|
LksStream << " HIP Offload Linker Script\n";
|
|
LksStream << " *** Automatically generated by Clang ***\n";
|
|
LksStream << "*/\n";
|
|
LksStream << "TARGET(binary)\n";
|
|
LksStream << "INPUT(" << BundleFileName << ")\n";
|
|
LksStream << "SECTIONS\n";
|
|
LksStream << "{\n";
|
|
LksStream << " .hip_fatbin :\n";
|
|
LksStream << " ALIGN(0x10)\n";
|
|
LksStream << " {\n";
|
|
LksStream << " PROVIDE_HIDDEN(__hip_fatbin = .);\n";
|
|
LksStream << " " << BundleFileName << "\n";
|
|
LksStream << " }\n";
|
|
LksStream << "}\n";
|
|
LksStream << "INSERT BEFORE .data\n";
|
|
LksStream.flush();
|
|
|
|
// Dump the contents of the linker script if the user requested that. We
|
|
// support this option to enable testing of behavior with -###.
|
|
if (C.getArgs().hasArg(options::OPT_fhip_dump_offload_linker_script))
|
|
llvm::errs() << LksBuffer;
|
|
|
|
// If this is a dry run, do not create the linker script file.
|
|
if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
|
|
return;
|
|
|
|
// Open script file and write the contents.
|
|
std::error_code EC;
|
|
llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
|
|
|
|
if (EC) {
|
|
C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
|
|
return;
|
|
}
|
|
|
|
Lksf << LksBuffer;
|
|
}
|
|
|
|
SmallString<128> tools::getStatsFileName(const llvm::opt::ArgList &Args,
|
|
const InputInfo &Output,
|
|
const InputInfo &Input,
|
|
const Driver &D) {
|
|
const Arg *A = Args.getLastArg(options::OPT_save_stats_EQ);
|
|
if (!A)
|
|
return {};
|
|
|
|
StringRef SaveStats = A->getValue();
|
|
SmallString<128> StatsFile;
|
|
if (SaveStats == "obj" && Output.isFilename()) {
|
|
StatsFile.assign(Output.getFilename());
|
|
llvm::sys::path::remove_filename(StatsFile);
|
|
} else if (SaveStats != "cwd") {
|
|
D.Diag(diag::err_drv_invalid_value) << A->getAsString(Args) << SaveStats;
|
|
return {};
|
|
}
|
|
|
|
StringRef BaseName = llvm::sys::path::filename(Input.getBaseInput());
|
|
llvm::sys::path::append(StatsFile, BaseName);
|
|
llvm::sys::path::replace_extension(StatsFile, "stats");
|
|
return StatsFile;
|
|
}
|