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Diffstat (limited to 'contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp | 777 |
1 files changed, 777 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp new file mode 100644 index 000000000000..2be7f0f69004 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp @@ -0,0 +1,777 @@ +//===--- ToolChain.cpp - Collections of tools for one platform ------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/Driver/ToolChain.h" +#include "ToolChains/CommonArgs.h" +#include "ToolChains/Arch/ARM.h" +#include "ToolChains/Clang.h" +#include "clang/Basic/ObjCRuntime.h" +#include "clang/Basic/VirtualFileSystem.h" +#include "clang/Config/config.h" +#include "clang/Driver/Action.h" +#include "clang/Driver/Driver.h" +#include "clang/Driver/DriverDiagnostic.h" +#include "clang/Driver/Options.h" +#include "clang/Driver/SanitizerArgs.h" +#include "clang/Driver/XRayArgs.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/Option/Arg.h" +#include "llvm/Option/ArgList.h" +#include "llvm/Option/Option.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/TargetParser.h" +#include "llvm/Support/TargetRegistry.h" + +using namespace clang::driver; +using namespace clang::driver::tools; +using namespace clang; +using namespace llvm; +using namespace llvm::opt; + +static llvm::opt::Arg *GetRTTIArgument(const ArgList &Args) { + return Args.getLastArg(options::OPT_mkernel, options::OPT_fapple_kext, + options::OPT_fno_rtti, options::OPT_frtti); +} + +static ToolChain::RTTIMode CalculateRTTIMode(const ArgList &Args, + const llvm::Triple &Triple, + const Arg *CachedRTTIArg) { + // Explicit rtti/no-rtti args + if (CachedRTTIArg) { + if (CachedRTTIArg->getOption().matches(options::OPT_frtti)) + return ToolChain::RM_EnabledExplicitly; + else + return ToolChain::RM_DisabledExplicitly; + } + + // -frtti is default, except for the PS4 CPU. + if (!Triple.isPS4CPU()) + return ToolChain::RM_EnabledImplicitly; + + // On the PS4, turning on c++ exceptions turns on rtti. + // We're assuming that, if we see -fexceptions, rtti gets turned on. + Arg *Exceptions = Args.getLastArgNoClaim( + options::OPT_fcxx_exceptions, options::OPT_fno_cxx_exceptions, + options::OPT_fexceptions, options::OPT_fno_exceptions); + if (Exceptions && + (Exceptions->getOption().matches(options::OPT_fexceptions) || + Exceptions->getOption().matches(options::OPT_fcxx_exceptions))) + return ToolChain::RM_EnabledImplicitly; + + return ToolChain::RM_DisabledImplicitly; +} + +ToolChain::ToolChain(const Driver &D, const llvm::Triple &T, + const ArgList &Args) + : D(D), Triple(T), Args(Args), CachedRTTIArg(GetRTTIArgument(Args)), + CachedRTTIMode(CalculateRTTIMode(Args, Triple, CachedRTTIArg)), + EffectiveTriple() { + if (Arg *A = Args.getLastArg(options::OPT_mthread_model)) + if (!isThreadModelSupported(A->getValue())) + D.Diag(diag::err_drv_invalid_thread_model_for_target) + << A->getValue() << A->getAsString(Args); + + std::string CandidateLibPath = getArchSpecificLibPath(); + if (getVFS().exists(CandidateLibPath)) + getFilePaths().push_back(CandidateLibPath); +} + +ToolChain::~ToolChain() { +} + +vfs::FileSystem &ToolChain::getVFS() const { return getDriver().getVFS(); } + +bool ToolChain::useIntegratedAs() const { + return Args.hasFlag(options::OPT_fintegrated_as, + options::OPT_fno_integrated_as, + IsIntegratedAssemblerDefault()); +} + +const SanitizerArgs& ToolChain::getSanitizerArgs() const { + if (!SanitizerArguments.get()) + SanitizerArguments.reset(new SanitizerArgs(*this, Args)); + return *SanitizerArguments.get(); +} + +const XRayArgs& ToolChain::getXRayArgs() const { + if (!XRayArguments.get()) + XRayArguments.reset(new XRayArgs(*this, Args)); + return *XRayArguments.get(); +} + +namespace { +struct DriverSuffix { + const char *Suffix; + const char *ModeFlag; +}; + +const DriverSuffix *FindDriverSuffix(StringRef ProgName) { + // A list of known driver suffixes. Suffixes are compared against the + // program name in order. If there is a match, the frontend type is updated as + // necessary by applying the ModeFlag. + static const DriverSuffix DriverSuffixes[] = { + {"clang", nullptr}, + {"clang++", "--driver-mode=g++"}, + {"clang-c++", "--driver-mode=g++"}, + {"clang-cc", nullptr}, + {"clang-cpp", "--driver-mode=cpp"}, + {"clang-g++", "--driver-mode=g++"}, + {"clang-gcc", nullptr}, + {"clang-cl", "--driver-mode=cl"}, + {"cc", nullptr}, + {"cpp", "--driver-mode=cpp"}, + {"cl", "--driver-mode=cl"}, + {"++", "--driver-mode=g++"}, + }; + + for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i) + if (ProgName.endswith(DriverSuffixes[i].Suffix)) + return &DriverSuffixes[i]; + return nullptr; +} + +/// Normalize the program name from argv[0] by stripping the file extension if +/// present and lower-casing the string on Windows. +std::string normalizeProgramName(llvm::StringRef Argv0) { + std::string ProgName = llvm::sys::path::stem(Argv0); +#ifdef LLVM_ON_WIN32 + // Transform to lowercase for case insensitive file systems. + std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower); +#endif + return ProgName; +} + +const DriverSuffix *parseDriverSuffix(StringRef ProgName) { + // Try to infer frontend type and default target from the program name by + // comparing it against DriverSuffixes in order. + + // If there is a match, the function tries to identify a target as prefix. + // E.g. "x86_64-linux-clang" as interpreted as suffix "clang" with target + // prefix "x86_64-linux". If such a target prefix is found, it may be + // added via -target as implicit first argument. + const DriverSuffix *DS = FindDriverSuffix(ProgName); + + if (!DS) { + // Try again after stripping any trailing version number: + // clang++3.5 -> clang++ + ProgName = ProgName.rtrim("0123456789."); + DS = FindDriverSuffix(ProgName); + } + + if (!DS) { + // Try again after stripping trailing -component. + // clang++-tot -> clang++ + ProgName = ProgName.slice(0, ProgName.rfind('-')); + DS = FindDriverSuffix(ProgName); + } + return DS; +} +} // anonymous namespace + +std::pair<std::string, std::string> +ToolChain::getTargetAndModeFromProgramName(StringRef PN) { + std::string ProgName = normalizeProgramName(PN); + const DriverSuffix *DS = parseDriverSuffix(ProgName); + if (!DS) + return std::make_pair("", ""); + std::string ModeFlag = DS->ModeFlag == nullptr ? "" : DS->ModeFlag; + + std::string::size_type LastComponent = + ProgName.rfind('-', ProgName.size() - strlen(DS->Suffix)); + if (LastComponent == std::string::npos) + return std::make_pair("", ModeFlag); + + // Infer target from the prefix. + StringRef Prefix(ProgName); + Prefix = Prefix.slice(0, LastComponent); + std::string IgnoredError; + std::string Target; + if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) { + Target = Prefix; + } + return std::make_pair(Target, ModeFlag); +} + +StringRef ToolChain::getDefaultUniversalArchName() const { + // In universal driver terms, the arch name accepted by -arch isn't exactly + // the same as the ones that appear in the triple. Roughly speaking, this is + // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the + // only interesting special case is powerpc. + switch (Triple.getArch()) { + case llvm::Triple::ppc: + return "ppc"; + case llvm::Triple::ppc64: + return "ppc64"; + case llvm::Triple::ppc64le: + return "ppc64le"; + default: + return Triple.getArchName(); + } +} + +bool ToolChain::IsUnwindTablesDefault() const { + return false; +} + +Tool *ToolChain::getClang() const { + if (!Clang) + Clang.reset(new tools::Clang(*this)); + return Clang.get(); +} + +Tool *ToolChain::buildAssembler() const { + return new tools::ClangAs(*this); +} + +Tool *ToolChain::buildLinker() const { + llvm_unreachable("Linking is not supported by this toolchain"); +} + +Tool *ToolChain::getAssemble() const { + if (!Assemble) + Assemble.reset(buildAssembler()); + return Assemble.get(); +} + +Tool *ToolChain::getClangAs() const { + if (!Assemble) + Assemble.reset(new tools::ClangAs(*this)); + return Assemble.get(); +} + +Tool *ToolChain::getLink() const { + if (!Link) + Link.reset(buildLinker()); + return Link.get(); +} + +Tool *ToolChain::getOffloadBundler() const { + if (!OffloadBundler) + OffloadBundler.reset(new tools::OffloadBundler(*this)); + return OffloadBundler.get(); +} + +Tool *ToolChain::getTool(Action::ActionClass AC) const { + switch (AC) { + case Action::AssembleJobClass: + return getAssemble(); + + case Action::LinkJobClass: + return getLink(); + + case Action::InputClass: + case Action::BindArchClass: + case Action::OffloadClass: + case Action::LipoJobClass: + case Action::DsymutilJobClass: + case Action::VerifyDebugInfoJobClass: + llvm_unreachable("Invalid tool kind."); + + case Action::CompileJobClass: + case Action::PrecompileJobClass: + case Action::PreprocessJobClass: + case Action::AnalyzeJobClass: + case Action::MigrateJobClass: + case Action::VerifyPCHJobClass: + case Action::BackendJobClass: + return getClang(); + + case Action::OffloadBundlingJobClass: + case Action::OffloadUnbundlingJobClass: + return getOffloadBundler(); + } + + llvm_unreachable("Invalid tool kind."); +} + +static StringRef getArchNameForCompilerRTLib(const ToolChain &TC, + const ArgList &Args) { + const llvm::Triple &Triple = TC.getTriple(); + bool IsWindows = Triple.isOSWindows(); + + if (Triple.isWindowsMSVCEnvironment() && TC.getArch() == llvm::Triple::x86) + return "i386"; + + if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb) + return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows) + ? "armhf" + : "arm"; + + return TC.getArchName(); +} + +std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component, + bool Shared) const { + const llvm::Triple &TT = getTriple(); + const char *Env = TT.isAndroid() ? "-android" : ""; + bool IsITANMSVCWindows = + TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment(); + + StringRef Arch = getArchNameForCompilerRTLib(*this, Args); + const char *Prefix = IsITANMSVCWindows ? "" : "lib"; + const char *Suffix = Shared ? (Triple.isOSWindows() ? ".dll" : ".so") + : (IsITANMSVCWindows ? ".lib" : ".a"); + + SmallString<128> Path(getDriver().ResourceDir); + StringRef OSLibName = Triple.isOSFreeBSD() ? "freebsd" : getOS(); + llvm::sys::path::append(Path, "lib", OSLibName); + llvm::sys::path::append(Path, Prefix + Twine("clang_rt.") + Component + "-" + + Arch + Env + Suffix); + return Path.str(); +} + +const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args, + StringRef Component, + bool Shared) const { + return Args.MakeArgString(getCompilerRT(Args, Component, Shared)); +} + +std::string ToolChain::getArchSpecificLibPath() const { + SmallString<128> Path(getDriver().ResourceDir); + StringRef OSLibName = getTriple().isOSFreeBSD() ? "freebsd" : getOS(); + llvm::sys::path::append(Path, "lib", OSLibName, + llvm::Triple::getArchTypeName(getArch())); + return Path.str(); +} + +bool ToolChain::needsProfileRT(const ArgList &Args) { + if (Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs, + false) || + Args.hasArg(options::OPT_fprofile_generate) || + Args.hasArg(options::OPT_fprofile_generate_EQ) || + Args.hasArg(options::OPT_fprofile_instr_generate) || + Args.hasArg(options::OPT_fprofile_instr_generate_EQ) || + Args.hasArg(options::OPT_fcreate_profile) || + Args.hasArg(options::OPT_coverage)) + return true; + + return false; +} + +Tool *ToolChain::SelectTool(const JobAction &JA) const { + if (getDriver().ShouldUseClangCompiler(JA)) return getClang(); + Action::ActionClass AC = JA.getKind(); + if (AC == Action::AssembleJobClass && useIntegratedAs()) + return getClangAs(); + return getTool(AC); +} + +std::string ToolChain::GetFilePath(const char *Name) const { + return D.GetFilePath(Name, *this); +} + +std::string ToolChain::GetProgramPath(const char *Name) const { + return D.GetProgramPath(Name, *this); +} + +std::string ToolChain::GetLinkerPath() const { + const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ); + StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER; + + if (llvm::sys::path::is_absolute(UseLinker)) { + // If we're passed what looks like an absolute path, don't attempt to + // second-guess that. + if (llvm::sys::fs::exists(UseLinker)) + return UseLinker; + } else if (UseLinker.empty() || UseLinker == "ld") { + // If we're passed -fuse-ld= with no argument, or with the argument ld, + // then use whatever the default system linker is. + return GetProgramPath(getDefaultLinker()); + } else { + llvm::SmallString<8> LinkerName("ld."); + LinkerName.append(UseLinker); + + std::string LinkerPath(GetProgramPath(LinkerName.c_str())); + if (llvm::sys::fs::exists(LinkerPath)) + return LinkerPath; + } + + if (A) + getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args); + + return GetProgramPath(getDefaultLinker()); +} + +types::ID ToolChain::LookupTypeForExtension(StringRef Ext) const { + return types::lookupTypeForExtension(Ext); +} + +bool ToolChain::HasNativeLLVMSupport() const { + return false; +} + +bool ToolChain::isCrossCompiling() const { + llvm::Triple HostTriple(LLVM_HOST_TRIPLE); + switch (HostTriple.getArch()) { + // The A32/T32/T16 instruction sets are not separate architectures in this + // context. + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: + return getArch() != llvm::Triple::arm && getArch() != llvm::Triple::thumb && + getArch() != llvm::Triple::armeb && getArch() != llvm::Triple::thumbeb; + default: + return HostTriple.getArch() != getArch(); + } +} + +ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const { + return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC, + VersionTuple()); +} + +bool ToolChain::isThreadModelSupported(const StringRef Model) const { + if (Model == "single") { + // FIXME: 'single' is only supported on ARM and WebAssembly so far. + return Triple.getArch() == llvm::Triple::arm || + Triple.getArch() == llvm::Triple::armeb || + Triple.getArch() == llvm::Triple::thumb || + Triple.getArch() == llvm::Triple::thumbeb || + Triple.getArch() == llvm::Triple::wasm32 || + Triple.getArch() == llvm::Triple::wasm64; + } else if (Model == "posix") + return true; + + return false; +} + +std::string ToolChain::ComputeLLVMTriple(const ArgList &Args, + types::ID InputType) const { + switch (getTriple().getArch()) { + default: + return getTripleString(); + + case llvm::Triple::x86_64: { + llvm::Triple Triple = getTriple(); + if (!Triple.isOSBinFormatMachO()) + return getTripleString(); + + if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) { + // x86_64h goes in the triple. Other -march options just use the + // vanilla triple we already have. + StringRef MArch = A->getValue(); + if (MArch == "x86_64h") + Triple.setArchName(MArch); + } + return Triple.getTriple(); + } + case llvm::Triple::aarch64: { + llvm::Triple Triple = getTriple(); + if (!Triple.isOSBinFormatMachO()) + return getTripleString(); + + // FIXME: older versions of ld64 expect the "arm64" component in the actual + // triple string and query it to determine whether an LTO file can be + // handled. Remove this when we don't care any more. + Triple.setArchName("arm64"); + return Triple.getTriple(); + } + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: { + // FIXME: Factor into subclasses. + llvm::Triple Triple = getTriple(); + bool IsBigEndian = getTriple().getArch() == llvm::Triple::armeb || + getTriple().getArch() == llvm::Triple::thumbeb; + + // Handle pseudo-target flags '-mlittle-endian'/'-EL' and + // '-mbig-endian'/'-EB'. + if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, + options::OPT_mbig_endian)) { + IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); + } + + // Thumb2 is the default for V7 on Darwin. + // + // FIXME: Thumb should just be another -target-feaure, not in the triple. + StringRef MCPU, MArch; + if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) + MCPU = A->getValue(); + if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) + MArch = A->getValue(); + std::string CPU = + Triple.isOSBinFormatMachO() + ? tools::arm::getARMCPUForMArch(MArch, Triple).str() + : tools::arm::getARMTargetCPU(MCPU, MArch, Triple); + StringRef Suffix = + tools::arm::getLLVMArchSuffixForARM(CPU, MArch, Triple); + bool IsMProfile = ARM::parseArchProfile(Suffix) == ARM::PK_M; + bool ThumbDefault = IsMProfile || (ARM::parseArchVersion(Suffix) == 7 && + getTriple().isOSBinFormatMachO()); + // FIXME: this is invalid for WindowsCE + if (getTriple().isOSWindows()) + ThumbDefault = true; + std::string ArchName; + if (IsBigEndian) + ArchName = "armeb"; + else + ArchName = "arm"; + + // Assembly files should start in ARM mode, unless arch is M-profile. + // Windows is always thumb. + if ((InputType != types::TY_PP_Asm && Args.hasFlag(options::OPT_mthumb, + options::OPT_mno_thumb, ThumbDefault)) || IsMProfile || + getTriple().isOSWindows()) { + 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, + Action::OffloadKind DeviceOffloadKind) 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 { + const Arg* A = Args.getLastArg(options::OPT_rtlib_EQ); + StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_RTLIB; + + // Only use "platform" in tests to override CLANG_DEFAULT_RTLIB! + if (LibName == "compiler-rt") + return ToolChain::RLT_CompilerRT; + else if (LibName == "libgcc") + return ToolChain::RLT_Libgcc; + else if (LibName == "platform") + return GetDefaultRuntimeLibType(); + + if (A) + getDriver().Diag(diag::err_drv_invalid_rtlib_name) << A->getAsString(Args); + + return GetDefaultRuntimeLibType(); +} + +ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{ + const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ); + StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB; + + // Only use "platform" in tests to override CLANG_DEFAULT_CXX_STDLIB! + if (LibName == "libc++") + return ToolChain::CST_Libcxx; + else if (LibName == "libstdc++") + return ToolChain::CST_Libstdcxx; + else if (LibName == "platform") + return GetDefaultCXXStdlibType(); + + if (A) + getDriver().Diag(diag::err_drv_invalid_stdlib_name) << A->getAsString(Args); + + return GetDefaultCXXStdlibType(); +} + +/// \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 | Nullability | + LocalBounds; + if (getTriple().getArch() == llvm::Triple::x86 || + getTriple().getArch() == llvm::Triple::x86_64 || + getTriple().getArch() == llvm::Triple::arm || + getTriple().getArch() == llvm::Triple::aarch64 || + getTriple().getArch() == llvm::Triple::wasm32 || + getTriple().getArch() == llvm::Triple::wasm64) + Res |= CFIICall; + return Res; +} + +void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs, + ArgStringList &CC1Args) const {} + +void ToolChain::AddIAMCUIncludeArgs(const ArgList &DriverArgs, + ArgStringList &CC1Args) const {} + +static VersionTuple separateMSVCFullVersion(unsigned Version) { + if (Version < 100) + return VersionTuple(Version); + + if (Version < 10000) + return VersionTuple(Version / 100, Version % 100); + + unsigned Build = 0, Factor = 1; + for (; Version > 10000; Version = Version / 10, Factor = Factor * 10) + Build = Build + (Version % 10) * Factor; + return VersionTuple(Version / 100, Version % 100, Build); +} + +VersionTuple +ToolChain::computeMSVCVersion(const Driver *D, + const llvm::opt::ArgList &Args) const { + const Arg *MSCVersion = Args.getLastArg(options::OPT_fmsc_version); + const Arg *MSCompatibilityVersion = + Args.getLastArg(options::OPT_fms_compatibility_version); + + if (MSCVersion && MSCompatibilityVersion) { + if (D) + D->Diag(diag::err_drv_argument_not_allowed_with) + << MSCVersion->getAsString(Args) + << MSCompatibilityVersion->getAsString(Args); + return VersionTuple(); + } + + if (MSCompatibilityVersion) { + VersionTuple MSVT; + if (MSVT.tryParse(MSCompatibilityVersion->getValue())) { + if (D) + D->Diag(diag::err_drv_invalid_value) + << MSCompatibilityVersion->getAsString(Args) + << MSCompatibilityVersion->getValue(); + } else { + return MSVT; + } + } + + if (MSCVersion) { + unsigned Version = 0; + if (StringRef(MSCVersion->getValue()).getAsInteger(10, Version)) { + if (D) + D->Diag(diag::err_drv_invalid_value) + << MSCVersion->getAsString(Args) << MSCVersion->getValue(); + } else { + return separateMSVCFullVersion(Version); + } + } + + return VersionTuple(); +} |