forked from OSchip/llvm-project
685 lines
23 KiB
C++
685 lines
23 KiB
C++
//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
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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 "Tools.h"
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#include "clang/Basic/ObjCRuntime.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/Driver.h"
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#include "clang/Driver/DriverDiagnostic.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 "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringSwitch.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/ErrorHandling.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/TargetParser.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;
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using namespace llvm::opt;
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static llvm::opt::Arg *GetRTTIArgument(const ArgList &Args) {
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return Args.getLastArg(options::OPT_mkernel, options::OPT_fapple_kext,
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options::OPT_fno_rtti, options::OPT_frtti);
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}
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static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args,
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const llvm::Triple &Triple,
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const Arg *CachedRTTIArg) {
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// Explicit rtti/no-rtti args
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if (CachedRTTIArg) {
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if (CachedRTTIArg->getOption().matches(options::OPT_frtti))
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return ToolChain::RM_EnabledExplicitly;
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else
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return ToolChain::RM_DisabledExplicitly;
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}
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// -frtti is default, except for the PS4 CPU.
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if (!Triple.isPS4CPU())
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return ToolChain::RM_EnabledImplicitly;
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// On the PS4, turning on c++ exceptions turns on rtti.
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// We're assuming that, if we see -fexceptions, rtti gets turned on.
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Arg *Exceptions = Args.getLastArgNoClaim(
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options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions,
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options::OPT_fexceptions, options::OPT_fno_exceptions);
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if (Exceptions &&
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(Exceptions->getOption().matches(options::OPT_fexceptions) ||
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Exceptions->getOption().matches(options::OPT_fcxx_exceptions)))
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return ToolChain::RM_EnabledImplicitly;
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return ToolChain::RM_DisabledImplicitly;
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}
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ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
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const ArgList &Args)
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: D(D), Triple(T), Args(Args), CachedRTTIArg(GetRTTIArgument(Args)),
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CachedRTTIMode(CalculateRTTIMode(Args, Triple, CachedRTTIArg)) {
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if (Arg *A = Args.getLastArg(options::OPT_mthread_model))
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if (!isThreadModelSupported(A->getValue()))
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D.Diag(diag::err_drv_invalid_thread_model_for_target)
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<< A->getValue() << A->getAsString(Args);
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}
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ToolChain::~ToolChain() {
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}
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vfs::FileSystem &ToolChain::getVFS() const { return getDriver().getVFS(); }
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bool ToolChain::useIntegratedAs() const {
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return Args.hasFlag(options::OPT_fintegrated_as,
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options::OPT_fno_integrated_as,
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IsIntegratedAssemblerDefault());
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}
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const SanitizerArgs& ToolChain::getSanitizerArgs() const {
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if (!SanitizerArguments.get())
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SanitizerArguments.reset(new SanitizerArgs(*this, Args));
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return *SanitizerArguments.get();
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}
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namespace {
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struct DriverSuffix {
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const char *Suffix;
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const char *ModeFlag;
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};
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const DriverSuffix *FindDriverSuffix(StringRef ProgName) {
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// A list of known driver suffixes. Suffixes are compared against the
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// program name in order. If there is a match, the frontend type is updated as
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// necessary by applying the ModeFlag.
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static const DriverSuffix DriverSuffixes[] = {
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{"clang", nullptr},
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{"clang++", "--driver-mode=g++"},
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{"clang-c++", "--driver-mode=g++"},
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{"clang-cc", nullptr},
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{"clang-cpp", "--driver-mode=cpp"},
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{"clang-g++", "--driver-mode=g++"},
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{"clang-gcc", nullptr},
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{"clang-cl", "--driver-mode=cl"},
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{"cc", nullptr},
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{"cpp", "--driver-mode=cpp"},
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{"cl", "--driver-mode=cl"},
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{"++", "--driver-mode=g++"},
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};
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for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i)
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if (ProgName.endswith(DriverSuffixes[i].Suffix))
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return &DriverSuffixes[i];
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return nullptr;
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}
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/// Normalize the program name from argv[0] by stripping the file extension if
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/// present and lower-casing the string on Windows.
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std::string normalizeProgramName(llvm::StringRef Argv0) {
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std::string ProgName = llvm::sys::path::stem(Argv0);
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#ifdef LLVM_ON_WIN32
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// Transform to lowercase for case insensitive file systems.
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std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower);
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#endif
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return ProgName;
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}
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const DriverSuffix *parseDriverSuffix(StringRef ProgName) {
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// Try to infer frontend type and default target from the program name by
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// comparing it against DriverSuffixes in order.
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// If there is a match, the function tries to identify a target as prefix.
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// E.g. "x86_64-linux-clang" as interpreted as suffix "clang" with target
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// prefix "x86_64-linux". If such a target prefix is found, it may be
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// added via -target as implicit first argument.
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const DriverSuffix *DS = FindDriverSuffix(ProgName);
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if (!DS) {
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// Try again after stripping any trailing version number:
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// clang++3.5 -> clang++
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ProgName = ProgName.rtrim("0123456789.");
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DS = FindDriverSuffix(ProgName);
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}
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if (!DS) {
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// Try again after stripping trailing -component.
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// clang++-tot -> clang++
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ProgName = ProgName.slice(0, ProgName.rfind('-'));
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DS = FindDriverSuffix(ProgName);
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}
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return DS;
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}
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} // anonymous namespace
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std::pair<std::string, std::string>
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ToolChain::getTargetAndModeFromProgramName(StringRef PN) {
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std::string ProgName = normalizeProgramName(PN);
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const DriverSuffix *DS = parseDriverSuffix(ProgName);
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if (!DS)
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return std::make_pair("", "");
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std::string ModeFlag = DS->ModeFlag == nullptr ? "" : DS->ModeFlag;
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std::string::size_type LastComponent =
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ProgName.rfind('-', ProgName.size() - strlen(DS->Suffix));
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if (LastComponent == std::string::npos)
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return std::make_pair("", ModeFlag);
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// Infer target from the prefix.
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StringRef Prefix(ProgName);
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Prefix = Prefix.slice(0, LastComponent);
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std::string IgnoredError;
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std::string Target;
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if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) {
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Target = Prefix;
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}
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return std::make_pair(Target, ModeFlag);
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}
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StringRef ToolChain::getDefaultUniversalArchName() const {
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// In universal driver terms, the arch name accepted by -arch isn't exactly
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// the same as the ones that appear in the triple. Roughly speaking, this is
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// an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
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// only interesting special case is powerpc.
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switch (Triple.getArch()) {
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case llvm::Triple::ppc:
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return "ppc";
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case llvm::Triple::ppc64:
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return "ppc64";
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case llvm::Triple::ppc64le:
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return "ppc64le";
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default:
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return Triple.getArchName();
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}
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}
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bool ToolChain::IsUnwindTablesDefault() const {
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return false;
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}
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Tool *ToolChain::getClang() const {
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if (!Clang)
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Clang.reset(new tools::Clang(*this));
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return Clang.get();
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}
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Tool *ToolChain::buildAssembler() const {
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return new tools::ClangAs(*this);
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}
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Tool *ToolChain::buildLinker() const {
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llvm_unreachable("Linking is not supported by this toolchain");
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}
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Tool *ToolChain::getAssemble() const {
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if (!Assemble)
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Assemble.reset(buildAssembler());
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return Assemble.get();
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}
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Tool *ToolChain::getClangAs() const {
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if (!Assemble)
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Assemble.reset(new tools::ClangAs(*this));
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return Assemble.get();
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}
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Tool *ToolChain::getLink() const {
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if (!Link)
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Link.reset(buildLinker());
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return Link.get();
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}
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Tool *ToolChain::getTool(Action::ActionClass AC) const {
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switch (AC) {
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case Action::AssembleJobClass:
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return getAssemble();
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case Action::LinkJobClass:
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return getLink();
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case Action::InputClass:
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case Action::BindArchClass:
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case Action::CudaDeviceClass:
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case Action::CudaHostClass:
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case Action::LipoJobClass:
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case Action::DsymutilJobClass:
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case Action::VerifyDebugInfoJobClass:
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llvm_unreachable("Invalid tool kind.");
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case Action::CompileJobClass:
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case Action::PrecompileJobClass:
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case Action::PreprocessJobClass:
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case Action::AnalyzeJobClass:
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case Action::MigrateJobClass:
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case Action::VerifyPCHJobClass:
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case Action::BackendJobClass:
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return getClang();
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}
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llvm_unreachable("Invalid tool kind.");
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}
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static StringRef getArchNameForCompilerRTLib(const ToolChain &TC,
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const ArgList &Args) {
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const llvm::Triple &Triple = TC.getTriple();
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bool IsWindows = Triple.isOSWindows();
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if (Triple.isWindowsMSVCEnvironment() && TC.getArch() == llvm::Triple::x86)
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return "i386";
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if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb)
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return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows)
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? "armhf"
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: "arm";
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return TC.getArchName();
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}
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std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component,
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bool Shared) const {
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const llvm::Triple &TT = getTriple();
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const char *Env = TT.isAndroid() ? "-android" : "";
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bool IsITANMSVCWindows =
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TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment();
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StringRef Arch = getArchNameForCompilerRTLib(*this, Args);
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const char *Prefix = IsITANMSVCWindows ? "" : "lib";
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const char *Suffix = Shared ? (Triple.isOSWindows() ? ".dll" : ".so")
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: (IsITANMSVCWindows ? ".lib" : ".a");
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SmallString<128> Path(getDriver().ResourceDir);
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StringRef OSLibName = Triple.isOSFreeBSD() ? "freebsd" : getOS();
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llvm::sys::path::append(Path, "lib", OSLibName);
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llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" +
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Arch + Env + Suffix);
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return Path.str();
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}
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const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args,
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StringRef Component,
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bool Shared) const {
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return Args.MakeArgString(getCompilerRT(Args, Component, Shared));
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}
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bool ToolChain::needsProfileRT(const ArgList &Args) {
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if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
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false) ||
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Args.hasArg(options::OPT_fprofile_generate) ||
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Args.hasArg(options::OPT_fprofile_generate_EQ) ||
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Args.hasArg(options::OPT_fprofile_instr_generate) ||
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Args.hasArg(options::OPT_fprofile_instr_generate_EQ) ||
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Args.hasArg(options::OPT_fcreate_profile) ||
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Args.hasArg(options::OPT_coverage))
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return true;
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return false;
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}
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Tool *ToolChain::SelectTool(const JobAction &JA) const {
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if (getDriver().ShouldUseClangCompiler(JA)) return getClang();
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Action::ActionClass AC = JA.getKind();
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if (AC == Action::AssembleJobClass && useIntegratedAs())
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return getClangAs();
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return getTool(AC);
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}
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std::string ToolChain::GetFilePath(const char *Name) const {
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return D.GetFilePath(Name, *this);
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}
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std::string ToolChain::GetProgramPath(const char *Name) const {
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return D.GetProgramPath(Name, *this);
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}
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std::string ToolChain::GetLinkerPath() const {
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if (Arg *A = Args.getLastArg(options::OPT_fuse_ld_EQ)) {
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StringRef Suffix = A->getValue();
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// If we're passed -fuse-ld= with no argument, or with the argument ld,
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// then use whatever the default system linker is.
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if (Suffix.empty() || Suffix == "ld")
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return GetProgramPath("ld");
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llvm::SmallString<8> LinkerName("ld.");
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LinkerName.append(Suffix);
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std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
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if (llvm::sys::fs::exists(LinkerPath))
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return LinkerPath;
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getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args);
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return "";
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}
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return GetProgramPath(DefaultLinker);
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}
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types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
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return types::lookupTypeForExtension(Ext);
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}
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bool ToolChain::HasNativeLLVMSupport() const {
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return false;
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}
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bool ToolChain::isCrossCompiling() const {
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llvm::Triple HostTriple(LLVM_HOST_TRIPLE);
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switch (HostTriple.getArch()) {
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// The A32/T32/T16 instruction sets are not separate architectures in this
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// context.
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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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return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb &&
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getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb;
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default:
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return HostTriple.getArch() != getArch();
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}
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}
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ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
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return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
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VersionTuple());
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}
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bool ToolChain::isThreadModelSupported(const StringRef Model) const {
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if (Model == "single") {
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// FIXME: 'single' is only supported on ARM and WebAssembly so far.
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return Triple.getArch() == llvm::Triple::arm ||
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Triple.getArch() == llvm::Triple::armeb ||
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Triple.getArch() == llvm::Triple::thumb ||
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Triple.getArch() == llvm::Triple::thumbeb ||
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Triple.getArch() == llvm::Triple::wasm32 ||
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Triple.getArch() == llvm::Triple::wasm64;
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} else if (Model == "posix")
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return true;
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return false;
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}
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std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
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types::ID InputType) const {
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switch (getTriple().getArch()) {
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default:
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return getTripleString();
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case llvm::Triple::x86_64: {
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llvm::Triple Triple = getTriple();
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if (!Triple.isOSBinFormatMachO())
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return getTripleString();
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if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
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// x86_64h goes in the triple. Other -march options just use the
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// vanilla triple we already have.
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StringRef MArch = A->getValue();
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if (MArch == "x86_64h")
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Triple.setArchName(MArch);
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}
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return Triple.getTriple();
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}
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case llvm::Triple::aarch64: {
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llvm::Triple Triple = getTriple();
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if (!Triple.isOSBinFormatMachO())
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return getTripleString();
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// FIXME: older versions of ld64 expect the "arm64" component in the actual
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// triple string and query it to determine whether an LTO file can be
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// handled. Remove this when we don't care any more.
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Triple.setArchName("arm64");
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return Triple.getTriple();
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}
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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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// FIXME: Factor into subclasses.
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llvm::Triple Triple = getTriple();
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bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb ||
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getTriple().getArch() == llvm::Triple::thumbeb;
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// Handle pseudo-target flags '-mlittle-endian'/'-EL' and
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// '-mbig-endian'/'-EB'.
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if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
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options::OPT_mbig_endian)) {
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IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
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}
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// Thumb2 is the default for V7 on Darwin.
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//
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// FIXME: Thumb should just be another -target-feaure, not in the triple.
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StringRef MCPU, MArch;
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if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
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MCPU = A->getValue();
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if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
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MArch = A->getValue();
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std::string CPU =
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Triple.isOSBinFormatMachO()
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? tools::arm::getARMCPUForMArch(MArch, Triple).str()
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: tools::arm::getARMTargetCPU(MCPU, MArch, Triple);
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StringRef Suffix =
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tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple);
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bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::PK_M;
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bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 &&
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getTriple().isOSBinFormatMachO());
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// FIXME: this is invalid for WindowsCE
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if (getTriple().isOSWindows())
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ThumbDefault = true;
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std::string ArchName;
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if (IsBigEndian)
|
|
ArchName = "armeb";
|
|
else
|
|
ArchName = "arm";
|
|
|
|
// Assembly files should start in ARM mode, unless arch is M-profile.
|
|
if ((InputType != types::TY_PP_Asm && Args.hasFlag(options::OPT_mthumb,
|
|
options::OPT_mno_thumb, ThumbDefault)) || IsMProfile) {
|
|
if (IsBigEndian)
|
|
ArchName = "thumbeb";
|
|
else
|
|
ArchName = "thumb";
|
|
}
|
|
Triple.setArchName(ArchName + Suffix.str());
|
|
|
|
return Triple.getTriple();
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
|
|
types::ID InputType) const {
|
|
return ComputeLLVMTriple(Args, InputType);
|
|
}
|
|
|
|
void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
// Each toolchain should provide the appropriate include flags.
|
|
}
|
|
|
|
void ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
}
|
|
|
|
void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {}
|
|
|
|
void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args,
|
|
llvm::opt::ArgStringList &CmdArgs) const {
|
|
if (!needsProfileRT(Args)) return;
|
|
|
|
CmdArgs.push_back(getCompilerRTArgString(Args, "profile"));
|
|
}
|
|
|
|
ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
|
|
const ArgList &Args) const {
|
|
if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
|
|
StringRef Value = A->getValue();
|
|
if (Value == "compiler-rt")
|
|
return ToolChain::RLT_CompilerRT;
|
|
if (Value == "libgcc")
|
|
return ToolChain::RLT_Libgcc;
|
|
getDriver().Diag(diag::err_drv_invalid_rtlib_name)
|
|
<< A->getAsString(Args);
|
|
}
|
|
|
|
return GetDefaultRuntimeLibType();
|
|
}
|
|
|
|
static bool ParseCXXStdlibType(const StringRef& Name,
|
|
ToolChain::CXXStdlibType& Type) {
|
|
if (Name == "libc++")
|
|
Type = ToolChain::CST_Libcxx;
|
|
else if (Name == "libstdc++")
|
|
Type = ToolChain::CST_Libstdcxx;
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
|
|
ToolChain::CXXStdlibType Type;
|
|
bool HasValidType = false;
|
|
|
|
const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
|
|
if (A) {
|
|
HasValidType = ParseCXXStdlibType(A->getValue(), Type);
|
|
if (!HasValidType)
|
|
getDriver().Diag(diag::err_drv_invalid_stdlib_name)
|
|
<< A->getAsString(Args);
|
|
}
|
|
|
|
if (!HasValidType && !ParseCXXStdlibType(CLANG_DEFAULT_CXX_STDLIB, Type))
|
|
Type = GetDefaultCXXStdlibType();
|
|
|
|
return Type;
|
|
}
|
|
|
|
/// \brief Utility function to add a system include directory to CC1 arguments.
|
|
/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args,
|
|
const Twine &Path) {
|
|
CC1Args.push_back("-internal-isystem");
|
|
CC1Args.push_back(DriverArgs.MakeArgString(Path));
|
|
}
|
|
|
|
/// \brief Utility function to add a system include directory with extern "C"
|
|
/// semantics to CC1 arguments.
|
|
///
|
|
/// Note that this should be used rarely, and only for directories that
|
|
/// historically and for legacy reasons are treated as having implicit extern
|
|
/// "C" semantics. These semantics are *ignored* by and large today, but its
|
|
/// important to preserve the preprocessor changes resulting from the
|
|
/// classification.
|
|
/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args,
|
|
const Twine &Path) {
|
|
CC1Args.push_back("-internal-externc-isystem");
|
|
CC1Args.push_back(DriverArgs.MakeArgString(Path));
|
|
}
|
|
|
|
void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args,
|
|
const Twine &Path) {
|
|
if (llvm::sys::fs::exists(Path))
|
|
addExternCSystemInclude(DriverArgs, CC1Args, Path);
|
|
}
|
|
|
|
/// \brief Utility function to add a list of system include directories to CC1.
|
|
/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args,
|
|
ArrayRef<StringRef> Paths) {
|
|
for (StringRef Path : Paths) {
|
|
CC1Args.push_back("-internal-isystem");
|
|
CC1Args.push_back(DriverArgs.MakeArgString(Path));
|
|
}
|
|
}
|
|
|
|
void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
// Header search paths should be handled by each of the subclasses.
|
|
// Historically, they have not been, and instead have been handled inside of
|
|
// the CC1-layer frontend. As the logic is hoisted out, this generic function
|
|
// will slowly stop being called.
|
|
//
|
|
// While it is being called, replicate a bit of a hack to propagate the
|
|
// '-stdlib=' flag down to CC1 so that it can in turn customize the C++
|
|
// header search paths with it. Once all systems are overriding this
|
|
// function, the CC1 flag and this line can be removed.
|
|
DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
|
|
}
|
|
|
|
void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
|
|
ArgStringList &CmdArgs) const {
|
|
CXXStdlibType Type = GetCXXStdlibType(Args);
|
|
|
|
switch (Type) {
|
|
case ToolChain::CST_Libcxx:
|
|
CmdArgs.push_back("-lc++");
|
|
break;
|
|
|
|
case ToolChain::CST_Libstdcxx:
|
|
CmdArgs.push_back("-lstdc++");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ToolChain::AddFilePathLibArgs(const ArgList &Args,
|
|
ArgStringList &CmdArgs) const {
|
|
for (const auto &LibPath : getFilePaths())
|
|
if(LibPath.length() > 0)
|
|
CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
|
|
}
|
|
|
|
void ToolChain::AddCCKextLibArgs(const ArgList &Args,
|
|
ArgStringList &CmdArgs) const {
|
|
CmdArgs.push_back("-lcc_kext");
|
|
}
|
|
|
|
bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
|
|
ArgStringList &CmdArgs) const {
|
|
// Do not check for -fno-fast-math or -fno-unsafe-math when -Ofast passed
|
|
// (to keep the linker options consistent with gcc and clang itself).
|
|
if (!isOptimizationLevelFast(Args)) {
|
|
// Check if -ffast-math or -funsafe-math.
|
|
Arg *A =
|
|
Args.getLastArg(options::OPT_ffast_math, options::OPT_fno_fast_math,
|
|
options::OPT_funsafe_math_optimizations,
|
|
options::OPT_fno_unsafe_math_optimizations);
|
|
|
|
if (!A || A->getOption().getID() == options::OPT_fno_fast_math ||
|
|
A->getOption().getID() == options::OPT_fno_unsafe_math_optimizations)
|
|
return false;
|
|
}
|
|
// If crtfastmath.o exists add it to the arguments.
|
|
std::string Path = GetFilePath("crtfastmath.o");
|
|
if (Path == "crtfastmath.o") // Not found.
|
|
return false;
|
|
|
|
CmdArgs.push_back(Args.MakeArgString(Path));
|
|
return true;
|
|
}
|
|
|
|
SanitizerMask ToolChain::getSupportedSanitizers() const {
|
|
// Return sanitizers which don't require runtime support and are not
|
|
// platform dependent.
|
|
using namespace SanitizerKind;
|
|
SanitizerMask Res = (Undefined & ~Vptr & ~Function) | (CFI & ~CFIICall) |
|
|
CFICastStrict | UnsignedIntegerOverflow | LocalBounds;
|
|
if (getTriple().getArch() == llvm::Triple::x86 ||
|
|
getTriple().getArch() == llvm::Triple::x86_64)
|
|
Res |= CFIICall;
|
|
return Res;
|
|
}
|
|
|
|
void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {}
|