| //===- ToolChain.cpp - Collections of tools for one platform --------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Driver/ToolChain.h" |
| #include "ToolChains/Arch/AArch64.h" |
| #include "ToolChains/Arch/ARM.h" |
| #include "ToolChains/Clang.h" |
| #include "ToolChains/CommonArgs.h" |
| #include "ToolChains/Flang.h" |
| #include "ToolChains/InterfaceStubs.h" |
| #include "clang/Basic/ObjCRuntime.h" |
| #include "clang/Basic/Sanitizers.h" |
| #include "clang/Config/config.h" |
| #include "clang/Driver/Action.h" |
| #include "clang/Driver/Driver.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/InputInfo.h" |
| #include "clang/Driver/Job.h" |
| #include "clang/Driver/Options.h" |
| #include "clang/Driver/SanitizerArgs.h" |
| #include "clang/Driver/XRayArgs.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/Config/llvm-config.h" |
| #include "llvm/MC/MCTargetOptions.h" |
| #include "llvm/MC/TargetRegistry.h" |
| #include "llvm/Option/Arg.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Option/OptTable.h" |
| #include "llvm/Option/Option.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/FileUtilities.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/VersionTuple.h" |
| #include "llvm/Support/VirtualFileSystem.h" |
| #include "llvm/TargetParser/AArch64TargetParser.h" |
| #include "llvm/TargetParser/TargetParser.h" |
| #include "llvm/TargetParser/Triple.h" |
| #include <cassert> |
| #include <cstddef> |
| #include <cstring> |
| #include <string> |
| |
| using namespace clang; |
| using namespace driver; |
| using namespace tools; |
| 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_Enabled; |
| else |
| return ToolChain::RM_Disabled; |
| } |
| |
| // -frtti is default, except for the PS4/PS5 and DriverKit. |
| bool NoRTTI = Triple.isPS() || Triple.isDriverKit(); |
| return NoRTTI ? ToolChain::RM_Disabled : ToolChain::RM_Enabled; |
| } |
| |
| static ToolChain::ExceptionsMode CalculateExceptionsMode(const ArgList &Args) { |
| if (Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions, |
| true)) { |
| return ToolChain::EM_Enabled; |
| } |
| return ToolChain::EM_Disabled; |
| } |
| |
| 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)), |
| CachedExceptionsMode(CalculateExceptionsMode(Args)) { |
| auto addIfExists = [this](path_list &List, const std::string &Path) { |
| if (getVFS().exists(Path)) |
| List.push_back(Path); |
| }; |
| |
| if (std::optional<std::string> Path = getRuntimePath()) |
| getLibraryPaths().push_back(*Path); |
| if (std::optional<std::string> Path = getStdlibPath()) |
| getFilePaths().push_back(*Path); |
| for (const auto &Path : getArchSpecificLibPaths()) |
| addIfExists(getFilePaths(), Path); |
| } |
| |
| llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>> |
| ToolChain::executeToolChainProgram(StringRef Executable) const { |
| llvm::SmallString<64> OutputFile; |
| llvm::sys::fs::createTemporaryFile("toolchain-program", "txt", OutputFile); |
| llvm::FileRemover OutputRemover(OutputFile.c_str()); |
| std::optional<llvm::StringRef> Redirects[] = { |
| {""}, |
| OutputFile.str(), |
| {""}, |
| }; |
| |
| std::string ErrorMessage; |
| if (llvm::sys::ExecuteAndWait(Executable, {}, {}, Redirects, |
| /* SecondsToWait */ 0, |
| /*MemoryLimit*/ 0, &ErrorMessage)) |
| return llvm::createStringError(std::error_code(), |
| Executable + ": " + ErrorMessage); |
| |
| llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> OutputBuf = |
| llvm::MemoryBuffer::getFile(OutputFile.c_str()); |
| if (!OutputBuf) |
| return llvm::createStringError(OutputBuf.getError(), |
| "Failed to read stdout of " + Executable + |
| ": " + OutputBuf.getError().message()); |
| return std::move(*OutputBuf); |
| } |
| |
| void ToolChain::setTripleEnvironment(llvm::Triple::EnvironmentType Env) { |
| Triple.setEnvironment(Env); |
| if (EffectiveTriple != llvm::Triple()) |
| EffectiveTriple.setEnvironment(Env); |
| } |
| |
| ToolChain::~ToolChain() = default; |
| |
| llvm::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()); |
| } |
| |
| bool ToolChain::useIntegratedBackend() const { |
| assert( |
| ((IsIntegratedBackendDefault() && IsIntegratedBackendSupported()) || |
| (!IsIntegratedBackendDefault() || IsNonIntegratedBackendSupported())) && |
| "(Non-)integrated backend set incorrectly!"); |
| |
| bool IBackend = Args.hasFlag(options::OPT_fintegrated_objemitter, |
| options::OPT_fno_integrated_objemitter, |
| IsIntegratedBackendDefault()); |
| |
| // Diagnose when integrated-objemitter options are not supported by this |
| // toolchain. |
| unsigned DiagID; |
| if ((IBackend && !IsIntegratedBackendSupported()) || |
| (!IBackend && !IsNonIntegratedBackendSupported())) |
| DiagID = clang::diag::err_drv_unsupported_opt_for_target; |
| else |
| DiagID = clang::diag::warn_drv_unsupported_opt_for_target; |
| Arg *A = Args.getLastArg(options::OPT_fno_integrated_objemitter); |
| if (A && !IsNonIntegratedBackendSupported()) |
| D.Diag(DiagID) << A->getAsString(Args) << Triple.getTriple(); |
| A = Args.getLastArg(options::OPT_fintegrated_objemitter); |
| if (A && !IsIntegratedBackendSupported()) |
| D.Diag(DiagID) << A->getAsString(Args) << Triple.getTriple(); |
| |
| return IBackend; |
| } |
| |
| bool ToolChain::useRelaxRelocations() const { |
| return ENABLE_X86_RELAX_RELOCATIONS; |
| } |
| |
| bool ToolChain::defaultToIEEELongDouble() const { |
| return PPC_LINUX_DEFAULT_IEEELONGDOUBLE && getTriple().isOSLinux(); |
| } |
| |
| static void getAArch64MultilibFlags(const Driver &D, |
| const llvm::Triple &Triple, |
| const llvm::opt::ArgList &Args, |
| Multilib::flags_list &Result) { |
| std::vector<StringRef> Features; |
| tools::aarch64::getAArch64TargetFeatures(D, Triple, Args, Features, false); |
| const auto UnifiedFeatures = tools::unifyTargetFeatures(Features); |
| llvm::DenseSet<StringRef> FeatureSet(UnifiedFeatures.begin(), |
| UnifiedFeatures.end()); |
| std::vector<std::string> MArch; |
| for (const auto &Ext : AArch64::Extensions) |
| if (FeatureSet.contains(Ext.Feature)) |
| MArch.push_back(Ext.Name.str()); |
| for (const auto &Ext : AArch64::Extensions) |
| if (FeatureSet.contains(Ext.NegFeature)) |
| MArch.push_back(("no" + Ext.Name).str()); |
| StringRef ArchName; |
| for (const auto &ArchInfo : AArch64::ArchInfos) |
| if (FeatureSet.contains(ArchInfo->ArchFeature)) |
| ArchName = ArchInfo->Name; |
| assert(!ArchName.empty() && "at least one architecture should be found"); |
| MArch.insert(MArch.begin(), ("-march=" + ArchName).str()); |
| Result.push_back(llvm::join(MArch, "+")); |
| } |
| |
| static void getARMMultilibFlags(const Driver &D, |
| const llvm::Triple &Triple, |
| const llvm::opt::ArgList &Args, |
| Multilib::flags_list &Result) { |
| std::vector<StringRef> Features; |
| llvm::ARM::FPUKind FPUKind = tools::arm::getARMTargetFeatures( |
| D, Triple, Args, Features, false /*ForAs*/, true /*ForMultilib*/); |
| const auto UnifiedFeatures = tools::unifyTargetFeatures(Features); |
| llvm::DenseSet<StringRef> FeatureSet(UnifiedFeatures.begin(), |
| UnifiedFeatures.end()); |
| std::vector<std::string> MArch; |
| for (const auto &Ext : ARM::ARCHExtNames) |
| if (FeatureSet.contains(Ext.Feature)) |
| MArch.push_back(Ext.Name.str()); |
| for (const auto &Ext : ARM::ARCHExtNames) |
| if (FeatureSet.contains(Ext.NegFeature)) |
| MArch.push_back(("no" + Ext.Name).str()); |
| MArch.insert(MArch.begin(), ("-march=" + Triple.getArchName()).str()); |
| Result.push_back(llvm::join(MArch, "+")); |
| |
| switch (FPUKind) { |
| #define ARM_FPU(NAME, KIND, VERSION, NEON_SUPPORT, RESTRICTION) \ |
| case llvm::ARM::KIND: \ |
| Result.push_back("-mfpu=" NAME); \ |
| break; |
| #include "llvm/TargetParser/ARMTargetParser.def" |
| default: |
| llvm_unreachable("Invalid FPUKind"); |
| } |
| |
| switch (arm::getARMFloatABI(D, Triple, Args)) { |
| case arm::FloatABI::Soft: |
| Result.push_back("-mfloat-abi=soft"); |
| break; |
| case arm::FloatABI::SoftFP: |
| Result.push_back("-mfloat-abi=softfp"); |
| break; |
| case arm::FloatABI::Hard: |
| Result.push_back("-mfloat-abi=hard"); |
| break; |
| case arm::FloatABI::Invalid: |
| llvm_unreachable("Invalid float ABI"); |
| } |
| } |
| |
| Multilib::flags_list |
| ToolChain::getMultilibFlags(const llvm::opt::ArgList &Args) const { |
| using namespace clang::driver::options; |
| |
| std::vector<std::string> Result; |
| const llvm::Triple Triple(ComputeEffectiveClangTriple(Args)); |
| Result.push_back("--target=" + Triple.str()); |
| |
| switch (Triple.getArch()) { |
| case llvm::Triple::aarch64: |
| case llvm::Triple::aarch64_32: |
| case llvm::Triple::aarch64_be: |
| getAArch64MultilibFlags(D, Triple, Args, Result); |
| break; |
| case llvm::Triple::arm: |
| case llvm::Triple::armeb: |
| case llvm::Triple::thumb: |
| case llvm::Triple::thumbeb: |
| getARMMultilibFlags(D, Triple, Args, Result); |
| break; |
| default: |
| break; |
| } |
| |
| // Include fno-exceptions and fno-rtti |
| // to improve multilib selection |
| if (getRTTIMode() == ToolChain::RTTIMode::RM_Disabled) |
| Result.push_back("-fno-rtti"); |
| else |
| Result.push_back("-frtti"); |
| |
| if (getExceptionsMode() == ToolChain::ExceptionsMode::EM_Disabled) |
| Result.push_back("-fno-exceptions"); |
| else |
| Result.push_back("-fexceptions"); |
| |
| // Sort and remove duplicates. |
| std::sort(Result.begin(), Result.end()); |
| Result.erase(std::unique(Result.begin(), Result.end()), Result.end()); |
| return Result; |
| } |
| |
| SanitizerArgs |
| ToolChain::getSanitizerArgs(const llvm::opt::ArgList &JobArgs) const { |
| SanitizerArgs SanArgs(*this, JobArgs, !SanitizerArgsChecked); |
| SanitizerArgsChecked = true; |
| return SanArgs; |
| } |
| |
| const XRayArgs& ToolChain::getXRayArgs() const { |
| if (!XRayArguments) |
| XRayArguments.reset(new XRayArgs(*this, Args)); |
| return *XRayArguments; |
| } |
| |
| namespace { |
| |
| struct DriverSuffix { |
| const char *Suffix; |
| const char *ModeFlag; |
| }; |
| |
| } // namespace |
| |
| static const DriverSuffix *FindDriverSuffix(StringRef ProgName, size_t &Pos) { |
| // 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++"}, |
| {"flang", "--driver-mode=flang"}, |
| {"clang-dxc", "--driver-mode=dxc"}, |
| }; |
| |
| for (const auto &DS : DriverSuffixes) { |
| StringRef Suffix(DS.Suffix); |
| if (ProgName.ends_with(Suffix)) { |
| Pos = ProgName.size() - Suffix.size(); |
| return &DS; |
| } |
| } |
| return nullptr; |
| } |
| |
| /// Normalize the program name from argv[0] by stripping the file extension if |
| /// present and lower-casing the string on Windows. |
| static std::string normalizeProgramName(llvm::StringRef Argv0) { |
| std::string ProgName = std::string(llvm::sys::path::filename(Argv0)); |
| if (is_style_windows(llvm::sys::path::Style::native)) { |
| // Transform to lowercase for case insensitive file systems. |
| std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), |
| ::tolower); |
| } |
| return ProgName; |
| } |
| |
| static const DriverSuffix *parseDriverSuffix(StringRef ProgName, size_t &Pos) { |
| // 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, Pos); |
| |
| if (!DS && ProgName.ends_with(".exe")) { |
| // Try again after stripping the executable suffix: |
| // clang++.exe -> clang++ |
| ProgName = ProgName.drop_back(StringRef(".exe").size()); |
| DS = FindDriverSuffix(ProgName, Pos); |
| } |
| |
| if (!DS) { |
| // Try again after stripping any trailing version number: |
| // clang++3.5 -> clang++ |
| ProgName = ProgName.rtrim("0123456789."); |
| DS = FindDriverSuffix(ProgName, Pos); |
| } |
| |
| if (!DS) { |
| // Try again after stripping trailing -component. |
| // clang++-tot -> clang++ |
| ProgName = ProgName.slice(0, ProgName.rfind('-')); |
| DS = FindDriverSuffix(ProgName, Pos); |
| } |
| return DS; |
| } |
| |
| ParsedClangName |
| ToolChain::getTargetAndModeFromProgramName(StringRef PN) { |
| std::string ProgName = normalizeProgramName(PN); |
| size_t SuffixPos; |
| const DriverSuffix *DS = parseDriverSuffix(ProgName, SuffixPos); |
| if (!DS) |
| return {}; |
| size_t SuffixEnd = SuffixPos + strlen(DS->Suffix); |
| |
| size_t LastComponent = ProgName.rfind('-', SuffixPos); |
| if (LastComponent == std::string::npos) |
| return ParsedClangName(ProgName.substr(0, SuffixEnd), DS->ModeFlag); |
| std::string ModeSuffix = ProgName.substr(LastComponent + 1, |
| SuffixEnd - LastComponent - 1); |
| |
| // Infer target from the prefix. |
| StringRef Prefix(ProgName); |
| Prefix = Prefix.slice(0, LastComponent); |
| std::string IgnoredError; |
| bool IsRegistered = |
| llvm::TargetRegistry::lookupTarget(std::string(Prefix), IgnoredError); |
| return ParsedClangName{std::string(Prefix), ModeSuffix, DS->ModeFlag, |
| IsRegistered}; |
| } |
| |
| 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. |
| switch (Triple.getArch()) { |
| case llvm::Triple::aarch64: { |
| if (getTriple().isArm64e()) |
| return "arm64e"; |
| return "arm64"; |
| } |
| case llvm::Triple::aarch64_32: |
| return "arm64_32"; |
| case llvm::Triple::ppc: |
| return "ppc"; |
| case llvm::Triple::ppcle: |
| return "ppcle"; |
| case llvm::Triple::ppc64: |
| return "ppc64"; |
| case llvm::Triple::ppc64le: |
| return "ppc64le"; |
| default: |
| return Triple.getArchName(); |
| } |
| } |
| |
| std::string ToolChain::getInputFilename(const InputInfo &Input) const { |
| return Input.getFilename(); |
| } |
| |
| ToolChain::UnwindTableLevel |
| ToolChain::getDefaultUnwindTableLevel(const ArgList &Args) const { |
| return UnwindTableLevel::None; |
| } |
| |
| Tool *ToolChain::getClang() const { |
| if (!Clang) |
| Clang.reset(new tools::Clang(*this, useIntegratedBackend())); |
| return Clang.get(); |
| } |
| |
| Tool *ToolChain::getFlang() const { |
| if (!Flang) |
| Flang.reset(new tools::Flang(*this)); |
| return Flang.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::buildStaticLibTool() const { |
| llvm_unreachable("Creating static lib 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::getStaticLibTool() const { |
| if (!StaticLibTool) |
| StaticLibTool.reset(buildStaticLibTool()); |
| return StaticLibTool.get(); |
| } |
| |
| Tool *ToolChain::getIfsMerge() const { |
| if (!IfsMerge) |
| IfsMerge.reset(new tools::ifstool::Merger(*this)); |
| return IfsMerge.get(); |
| } |
| |
| Tool *ToolChain::getOffloadBundler() const { |
| if (!OffloadBundler) |
| OffloadBundler.reset(new tools::OffloadBundler(*this)); |
| return OffloadBundler.get(); |
| } |
| |
| Tool *ToolChain::getOffloadPackager() const { |
| if (!OffloadPackager) |
| OffloadPackager.reset(new tools::OffloadPackager(*this)); |
| return OffloadPackager.get(); |
| } |
| |
| Tool *ToolChain::getLinkerWrapper() const { |
| if (!LinkerWrapper) |
| LinkerWrapper.reset(new tools::LinkerWrapper(*this, getLink())); |
| return LinkerWrapper.get(); |
| } |
| |
| Tool *ToolChain::getTool(Action::ActionClass AC) const { |
| switch (AC) { |
| case Action::AssembleJobClass: |
| return getAssemble(); |
| |
| case Action::IfsMergeJobClass: |
| return getIfsMerge(); |
| |
| case Action::LinkJobClass: |
| return getLink(); |
| |
| case Action::StaticLibJobClass: |
| return getStaticLibTool(); |
| |
| case Action::InputClass: |
| case Action::BindArchClass: |
| case Action::OffloadClass: |
| case Action::LipoJobClass: |
| case Action::DsymutilJobClass: |
| case Action::VerifyDebugInfoJobClass: |
| case Action::BinaryAnalyzeJobClass: |
| llvm_unreachable("Invalid tool kind."); |
| |
| case Action::CompileJobClass: |
| case Action::PrecompileJobClass: |
| case Action::PreprocessJobClass: |
| case Action::ExtractAPIJobClass: |
| case Action::AnalyzeJobClass: |
| case Action::MigrateJobClass: |
| case Action::VerifyPCHJobClass: |
| case Action::BackendJobClass: |
| return getClang(); |
| |
| case Action::OffloadBundlingJobClass: |
| case Action::OffloadUnbundlingJobClass: |
| return getOffloadBundler(); |
| |
| case Action::OffloadPackagerJobClass: |
| return getOffloadPackager(); |
| case Action::LinkerWrapperJobClass: |
| return getLinkerWrapper(); |
| } |
| |
| 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 (TC.isBareMetal()) |
| return Triple.getArchName(); |
| |
| if (TC.getArch() == llvm::Triple::arm || TC.getArch() == llvm::Triple::armeb) |
| return (arm::getARMFloatABI(TC, Args) == arm::FloatABI::Hard && !IsWindows) |
| ? "armhf" |
| : "arm"; |
| |
| // For historic reasons, Android library is using i686 instead of i386. |
| if (TC.getArch() == llvm::Triple::x86 && Triple.isAndroid()) |
| return "i686"; |
| |
| if (TC.getArch() == llvm::Triple::x86_64 && Triple.isX32()) |
| return "x32"; |
| |
| return llvm::Triple::getArchTypeName(TC.getArch()); |
| } |
| |
| StringRef ToolChain::getOSLibName() const { |
| if (Triple.isOSDarwin()) |
| return "darwin"; |
| |
| switch (Triple.getOS()) { |
| case llvm::Triple::FreeBSD: |
| return "freebsd"; |
| case llvm::Triple::NetBSD: |
| return "netbsd"; |
| case llvm::Triple::OpenBSD: |
| return "openbsd"; |
| case llvm::Triple::Solaris: |
| return "sunos"; |
| case llvm::Triple::AIX: |
| return "aix"; |
| default: |
| return getOS(); |
| } |
| } |
| |
| std::string ToolChain::getCompilerRTPath() const { |
| SmallString<128> Path(getDriver().ResourceDir); |
| if (isBareMetal()) { |
| llvm::sys::path::append(Path, "lib", getOSLibName()); |
| if (!SelectedMultilibs.empty()) { |
| Path += SelectedMultilibs.back().gccSuffix(); |
| } |
| } else if (Triple.isOSUnknown()) { |
| llvm::sys::path::append(Path, "lib"); |
| } else { |
| llvm::sys::path::append(Path, "lib", getOSLibName()); |
| } |
| return std::string(Path); |
| } |
| |
| std::string ToolChain::getCompilerRTBasename(const ArgList &Args, |
| StringRef Component, |
| FileType Type) const { |
| std::string CRTAbsolutePath = getCompilerRT(Args, Component, Type); |
| return llvm::sys::path::filename(CRTAbsolutePath).str(); |
| } |
| |
| std::string ToolChain::buildCompilerRTBasename(const llvm::opt::ArgList &Args, |
| StringRef Component, |
| FileType Type, |
| bool AddArch) const { |
| const llvm::Triple &TT = getTriple(); |
| bool IsITANMSVCWindows = |
| TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment(); |
| |
| const char *Prefix = |
| IsITANMSVCWindows || Type == ToolChain::FT_Object ? "" : "lib"; |
| const char *Suffix; |
| switch (Type) { |
| case ToolChain::FT_Object: |
| Suffix = IsITANMSVCWindows ? ".obj" : ".o"; |
| break; |
| case ToolChain::FT_Static: |
| Suffix = IsITANMSVCWindows ? ".lib" : ".a"; |
| break; |
| case ToolChain::FT_Shared: |
| Suffix = TT.isOSWindows() |
| ? (TT.isWindowsGNUEnvironment() ? ".dll.a" : ".lib") |
| : ".so"; |
| break; |
| } |
| |
| std::string ArchAndEnv; |
| if (AddArch) { |
| StringRef Arch = getArchNameForCompilerRTLib(*this, Args); |
| const char *Env = TT.isAndroid() ? "-android" : ""; |
| ArchAndEnv = ("-" + Arch + Env).str(); |
| } |
| return (Prefix + Twine("clang_rt.") + Component + ArchAndEnv + Suffix).str(); |
| } |
| |
| std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component, |
| FileType Type) const { |
| // Check for runtime files in the new layout without the architecture first. |
| std::string CRTBasename = |
| buildCompilerRTBasename(Args, Component, Type, /*AddArch=*/false); |
| SmallString<128> Path; |
| for (const auto &LibPath : getLibraryPaths()) { |
| SmallString<128> P(LibPath); |
| llvm::sys::path::append(P, CRTBasename); |
| if (getVFS().exists(P)) |
| return std::string(P); |
| if (Path.empty()) |
| Path = P; |
| } |
| if (getTriple().isOSAIX()) |
| Path.clear(); |
| |
| // Check the filename for the old layout if the new one does not exist. |
| CRTBasename = |
| buildCompilerRTBasename(Args, Component, Type, /*AddArch=*/true); |
| SmallString<128> OldPath(getCompilerRTPath()); |
| llvm::sys::path::append(OldPath, CRTBasename); |
| if (Path.empty() || getVFS().exists(OldPath)) |
| return std::string(OldPath); |
| |
| // If none is found, use a file name from the new layout, which may get |
| // printed in an error message, aiding users in knowing what Clang is |
| // looking for. |
| return std::string(Path); |
| } |
| |
| const char *ToolChain::getCompilerRTArgString(const llvm::opt::ArgList &Args, |
| StringRef Component, |
| FileType Type) const { |
| return Args.MakeArgString(getCompilerRT(Args, Component, Type)); |
| } |
| |
| // Android target triples contain a target version. If we don't have libraries |
| // for the exact target version, we should fall back to the next newest version |
| // or a versionless path, if any. |
| std::optional<std::string> |
| ToolChain::getFallbackAndroidTargetPath(StringRef BaseDir) const { |
| llvm::Triple TripleWithoutLevel(getTriple()); |
| TripleWithoutLevel.setEnvironmentName("android"); // remove any version number |
| const std::string &TripleWithoutLevelStr = TripleWithoutLevel.str(); |
| unsigned TripleVersion = getTriple().getEnvironmentVersion().getMajor(); |
| unsigned BestVersion = 0; |
| |
| SmallString<32> TripleDir; |
| bool UsingUnversionedDir = false; |
| std::error_code EC; |
| for (llvm::vfs::directory_iterator LI = getVFS().dir_begin(BaseDir, EC), LE; |
| !EC && LI != LE; LI = LI.increment(EC)) { |
| StringRef DirName = llvm::sys::path::filename(LI->path()); |
| StringRef DirNameSuffix = DirName; |
| if (DirNameSuffix.consume_front(TripleWithoutLevelStr)) { |
| if (DirNameSuffix.empty() && TripleDir.empty()) { |
| TripleDir = DirName; |
| UsingUnversionedDir = true; |
| } else { |
| unsigned Version; |
| if (!DirNameSuffix.getAsInteger(10, Version) && Version > BestVersion && |
| Version < TripleVersion) { |
| BestVersion = Version; |
| TripleDir = DirName; |
| UsingUnversionedDir = false; |
| } |
| } |
| } |
| } |
| |
| if (TripleDir.empty()) |
| return {}; |
| |
| SmallString<128> P(BaseDir); |
| llvm::sys::path::append(P, TripleDir); |
| if (UsingUnversionedDir) |
| D.Diag(diag::warn_android_unversioned_fallback) << P << getTripleString(); |
| return std::string(P); |
| } |
| |
| std::optional<std::string> |
| ToolChain::getTargetSubDirPath(StringRef BaseDir) const { |
| auto getPathForTriple = |
| [&](const llvm::Triple &Triple) -> std::optional<std::string> { |
| SmallString<128> P(BaseDir); |
| llvm::sys::path::append(P, Triple.str()); |
| if (getVFS().exists(P)) |
| return std::string(P); |
| return {}; |
| }; |
| |
| if (auto Path = getPathForTriple(getTriple())) |
| return *Path; |
| |
| // When building with per target runtime directories, various ways of naming |
| // the Arm architecture may have been normalised to simply "arm". |
| // For example "armv8l" (Armv8 AArch32 little endian) is replaced with "arm". |
| // Since an armv8l system can use libraries built for earlier architecture |
| // versions assuming endian and float ABI match. |
| // |
| // Original triple: armv8l-unknown-linux-gnueabihf |
| // Runtime triple: arm-unknown-linux-gnueabihf |
| // |
| // We do not do this for armeb (big endian) because doing so could make us |
| // select little endian libraries. In addition, all known armeb triples only |
| // use the "armeb" architecture name. |
| // |
| // M profile Arm is bare metal and we know they will not be using the per |
| // target runtime directory layout. |
| if (getTriple().getArch() == Triple::arm && !getTriple().isArmMClass()) { |
| llvm::Triple ArmTriple = getTriple(); |
| ArmTriple.setArch(Triple::arm); |
| if (auto Path = getPathForTriple(ArmTriple)) |
| return *Path; |
| } |
| |
| if (getTriple().isAndroid()) |
| return getFallbackAndroidTargetPath(BaseDir); |
| |
| return {}; |
| } |
| |
| std::optional<std::string> ToolChain::getRuntimePath() const { |
| SmallString<128> P(D.ResourceDir); |
| llvm::sys::path::append(P, "lib"); |
| if (auto Ret = getTargetSubDirPath(P)) |
| return Ret; |
| // Darwin does not use per-target runtime directory. |
| if (Triple.isOSDarwin()) |
| return {}; |
| llvm::sys::path::append(P, Triple.str()); |
| return std::string(P); |
| } |
| |
| std::optional<std::string> ToolChain::getStdlibPath() const { |
| SmallString<128> P(D.Dir); |
| llvm::sys::path::append(P, "..", "lib"); |
| return getTargetSubDirPath(P); |
| } |
| |
| ToolChain::path_list ToolChain::getArchSpecificLibPaths() const { |
| path_list Paths; |
| |
| auto AddPath = [&](const ArrayRef<StringRef> &SS) { |
| SmallString<128> Path(getDriver().ResourceDir); |
| llvm::sys::path::append(Path, "lib"); |
| for (auto &S : SS) |
| llvm::sys::path::append(Path, S); |
| Paths.push_back(std::string(Path)); |
| }; |
| |
| AddPath({getTriple().str()}); |
| AddPath({getOSLibName(), llvm::Triple::getArchTypeName(getArch())}); |
| return Paths; |
| } |
| |
| bool ToolChain::needsProfileRT(const ArgList &Args) { |
| if (Args.hasArg(options::OPT_noprofilelib)) |
| return false; |
| |
| return Args.hasArg(options::OPT_fprofile_generate) || |
| Args.hasArg(options::OPT_fprofile_generate_EQ) || |
| Args.hasArg(options::OPT_fcs_profile_generate) || |
| Args.hasArg(options::OPT_fcs_profile_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_forder_file_instrumentation); |
| } |
| |
| bool ToolChain::needsGCovInstrumentation(const llvm::opt::ArgList &Args) { |
| return Args.hasArg(options::OPT_coverage) || |
| Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs, |
| false); |
| } |
| |
| Tool *ToolChain::SelectTool(const JobAction &JA) const { |
| if (D.IsFlangMode() && getDriver().ShouldUseFlangCompiler(JA)) return getFlang(); |
| if (getDriver().ShouldUseClangCompiler(JA)) return getClang(); |
| Action::ActionClass AC = JA.getKind(); |
| if (AC == Action::AssembleJobClass && useIntegratedAs() && |
| !getTriple().isOSAIX()) |
| 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(bool *LinkerIsLLD) const { |
| if (LinkerIsLLD) |
| *LinkerIsLLD = false; |
| |
| // Get -fuse-ld= first to prevent -Wunused-command-line-argument. -fuse-ld= is |
| // considered as the linker flavor, e.g. "bfd", "gold", or "lld". |
| const Arg* A = Args.getLastArg(options::OPT_fuse_ld_EQ); |
| StringRef UseLinker = A ? A->getValue() : CLANG_DEFAULT_LINKER; |
| |
| // --ld-path= takes precedence over -fuse-ld= and specifies the executable |
| // name. -B, COMPILER_PATH and PATH and consulted if the value does not |
| // contain a path component separator. |
| // -fuse-ld=lld can be used with --ld-path= to inform clang that the binary |
| // that --ld-path= points to is lld. |
| if (const Arg *A = Args.getLastArg(options::OPT_ld_path_EQ)) { |
| std::string Path(A->getValue()); |
| if (!Path.empty()) { |
| if (llvm::sys::path::parent_path(Path).empty()) |
| Path = GetProgramPath(A->getValue()); |
| if (llvm::sys::fs::can_execute(Path)) { |
| if (LinkerIsLLD) |
| *LinkerIsLLD = UseLinker == "lld"; |
| return std::string(Path); |
| } |
| } |
| getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args); |
| return GetProgramPath(getDefaultLinker()); |
| } |
| // If we're passed -fuse-ld= with no argument, or with the argument ld, |
| // then use whatever the default system linker is. |
| if (UseLinker.empty() || UseLinker == "ld") { |
| const char *DefaultLinker = getDefaultLinker(); |
| if (llvm::sys::path::is_absolute(DefaultLinker)) |
| return std::string(DefaultLinker); |
| else |
| return GetProgramPath(DefaultLinker); |
| } |
| |
| // Extending -fuse-ld= to an absolute or relative path is unexpected. Checking |
| // for the linker flavor is brittle. In addition, prepending "ld." or "ld64." |
| // to a relative path is surprising. This is more complex due to priorities |
| // among -B, COMPILER_PATH and PATH. --ld-path= should be used instead. |
| if (UseLinker.contains('/')) |
| getDriver().Diag(diag::warn_drv_fuse_ld_path); |
| |
| 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::can_execute(UseLinker)) |
| return std::string(UseLinker); |
| } else { |
| llvm::SmallString<8> LinkerName; |
| if (Triple.isOSDarwin()) |
| LinkerName.append("ld64."); |
| else |
| LinkerName.append("ld."); |
| LinkerName.append(UseLinker); |
| |
| std::string LinkerPath(GetProgramPath(LinkerName.c_str())); |
| if (llvm::sys::fs::can_execute(LinkerPath)) { |
| if (LinkerIsLLD) |
| *LinkerIsLLD = UseLinker == "lld"; |
| return LinkerPath; |
| } |
| } |
| |
| if (A) |
| getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args); |
| |
| return GetProgramPath(getDefaultLinker()); |
| } |
| |
| std::string ToolChain::GetStaticLibToolPath() const { |
| // TODO: Add support for static lib archiving on Windows |
| if (Triple.isOSDarwin()) |
| return GetProgramPath("libtool"); |
| return GetProgramPath("llvm-ar"); |
| } |
| |
| types::ID ToolChain::LookupTypeForExtension(StringRef Ext) const { |
| types::ID id = types::lookupTypeForExtension(Ext); |
| |
| // Flang always runs the preprocessor and has no notion of "preprocessed |
| // fortran". Here, TY_PP_Fortran is coerced to TY_Fortran to avoid treating |
| // them differently. |
| if (D.IsFlangMode() && id == types::TY_PP_Fortran) |
| id = types::TY_Fortran; |
| |
| return id; |
| } |
| |
| 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()); |
| } |
| |
| llvm::ExceptionHandling |
| ToolChain::GetExceptionModel(const llvm::opt::ArgList &Args) const { |
| return llvm::ExceptionHandling::None; |
| } |
| |
| 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.isWasm(); |
| } 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(); |
| |
| if (Triple.isArm64e()) |
| 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::aarch64_32: |
| return getTripleString(); |
| case llvm::Triple::arm: |
| case llvm::Triple::armeb: |
| case llvm::Triple::thumb: |
| case llvm::Triple::thumbeb: { |
| llvm::Triple Triple = getTriple(); |
| tools::arm::setArchNameInTriple(getDriver(), Args, InputType, Triple); |
| tools::arm::setFloatABIInTriple(getDriver(), Args, Triple); |
| return Triple.getTriple(); |
| } |
| } |
| } |
| |
| std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args, |
| types::ID InputType) const { |
| return ComputeLLVMTriple(Args, InputType); |
| } |
| |
| std::string ToolChain::computeSysRoot() const { |
| return D.SysRoot; |
| } |
| |
| 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::addClangCC1ASTargetOptions(const ArgList &Args, |
| ArgStringList &CC1ASArgs) const {} |
| |
| void ToolChain::addClangWarningOptions(ArgStringList &CC1Args) const {} |
| |
| void ToolChain::addProfileRTLibs(const llvm::opt::ArgList &Args, |
| llvm::opt::ArgStringList &CmdArgs) const { |
| if (!needsProfileRT(Args) && !needsGCovInstrumentation(Args)) |
| return; |
| |
| CmdArgs.push_back(getCompilerRTArgString(Args, "profile")); |
| } |
| |
| ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType( |
| const ArgList &Args) const { |
| if (runtimeLibType) |
| return *runtimeLibType; |
| |
| 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") |
| runtimeLibType = ToolChain::RLT_CompilerRT; |
| else if (LibName == "libgcc") |
| runtimeLibType = ToolChain::RLT_Libgcc; |
| else if (LibName == "platform") |
| runtimeLibType = GetDefaultRuntimeLibType(); |
| else { |
| if (A) |
| getDriver().Diag(diag::err_drv_invalid_rtlib_name) |
| << A->getAsString(Args); |
| |
| runtimeLibType = GetDefaultRuntimeLibType(); |
| } |
| |
| return *runtimeLibType; |
| } |
| |
| ToolChain::UnwindLibType ToolChain::GetUnwindLibType( |
| const ArgList &Args) const { |
| if (unwindLibType) |
| return *unwindLibType; |
| |
| const Arg *A = Args.getLastArg(options::OPT_unwindlib_EQ); |
| StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_UNWINDLIB; |
| |
| if (LibName == "none") |
| unwindLibType = ToolChain::UNW_None; |
| else if (LibName == "platform" || LibName == "") { |
| ToolChain::RuntimeLibType RtLibType = GetRuntimeLibType(Args); |
| if (RtLibType == ToolChain::RLT_CompilerRT) { |
| if (getTriple().isAndroid() || getTriple().isOSAIX()) |
| unwindLibType = ToolChain::UNW_CompilerRT; |
| else |
| unwindLibType = ToolChain::UNW_None; |
| } else if (RtLibType == ToolChain::RLT_Libgcc) |
| unwindLibType = ToolChain::UNW_Libgcc; |
| } else if (LibName == "libunwind") { |
| if (GetRuntimeLibType(Args) == RLT_Libgcc) |
| getDriver().Diag(diag::err_drv_incompatible_unwindlib); |
| unwindLibType = ToolChain::UNW_CompilerRT; |
| } else if (LibName == "libgcc") |
| unwindLibType = ToolChain::UNW_Libgcc; |
| else { |
| if (A) |
| getDriver().Diag(diag::err_drv_invalid_unwindlib_name) |
| << A->getAsString(Args); |
| |
| unwindLibType = GetDefaultUnwindLibType(); |
| } |
| |
| return *unwindLibType; |
| } |
| |
| ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{ |
| if (cxxStdlibType) |
| return *cxxStdlibType; |
| |
| 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++") |
| cxxStdlibType = ToolChain::CST_Libcxx; |
| else if (LibName == "libstdc++") |
| cxxStdlibType = ToolChain::CST_Libstdcxx; |
| else if (LibName == "platform") |
| cxxStdlibType = GetDefaultCXXStdlibType(); |
| else { |
| if (A) |
| getDriver().Diag(diag::err_drv_invalid_stdlib_name) |
| << A->getAsString(Args); |
| |
| cxxStdlibType = GetDefaultCXXStdlibType(); |
| } |
| |
| return *cxxStdlibType; |
| } |
| |
| /// 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)); |
| } |
| |
| /// 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); |
| } |
| |
| /// 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 (const auto &Path : Paths) { |
| CC1Args.push_back("-internal-isystem"); |
| CC1Args.push_back(DriverArgs.MakeArgString(Path)); |
| } |
| } |
| |
| /*static*/ std::string ToolChain::concat(StringRef Path, const Twine &A, |
| const Twine &B, const Twine &C, |
| const Twine &D) { |
| SmallString<128> Result(Path); |
| llvm::sys::path::append(Result, llvm::sys::path::Style::posix, A, B, C, D); |
| return std::string(Result); |
| } |
| |
| std::string ToolChain::detectLibcxxVersion(StringRef IncludePath) const { |
| std::error_code EC; |
| int MaxVersion = 0; |
| std::string MaxVersionString; |
| SmallString<128> Path(IncludePath); |
| llvm::sys::path::append(Path, "c++"); |
| for (llvm::vfs::directory_iterator LI = getVFS().dir_begin(Path, EC), LE; |
| !EC && LI != LE; LI = LI.increment(EC)) { |
| StringRef VersionText = llvm::sys::path::filename(LI->path()); |
| int Version; |
| if (VersionText[0] == 'v' && |
| !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) { |
| if (Version > MaxVersion) { |
| MaxVersion = Version; |
| MaxVersionString = std::string(VersionText); |
| } |
| } |
| } |
| if (!MaxVersion) |
| return ""; |
| return MaxVersionString; |
| } |
| |
| 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::AddClangCXXStdlibIsystemArgs( |
| const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| DriverArgs.ClaimAllArgs(options::OPT_stdlibxx_isystem); |
| // This intentionally only looks at -nostdinc++, and not -nostdinc or |
| // -nostdlibinc. The purpose of -stdlib++-isystem is to support toolchain |
| // setups with non-standard search logic for the C++ headers, while still |
| // allowing users of the toolchain to bring their own C++ headers. Such a |
| // toolchain likely also has non-standard search logic for the C headers and |
| // uses -nostdinc to suppress the default logic, but -stdlib++-isystem should |
| // still work in that case and only be suppressed by an explicit -nostdinc++ |
| // in a project using the toolchain. |
| if (!DriverArgs.hasArg(options::OPT_nostdincxx)) |
| for (const auto &P : |
| DriverArgs.getAllArgValues(options::OPT_stdlibxx_isystem)) |
| addSystemInclude(DriverArgs, CC1Args, P); |
| } |
| |
| bool ToolChain::ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const { |
| return getDriver().CCCIsCXX() && |
| !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, |
| options::OPT_nostdlibxx); |
| } |
| |
| void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| assert(!Args.hasArg(options::OPT_nostdlibxx) && |
| "should not have called this"); |
| CXXStdlibType Type = GetCXXStdlibType(Args); |
| |
| switch (Type) { |
| case ToolChain::CST_Libcxx: |
| CmdArgs.push_back("-lc++"); |
| if (Args.hasArg(options::OPT_fexperimental_library)) |
| CmdArgs.push_back("-lc++experimental"); |
| 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::isFastMathRuntimeAvailable(const ArgList &Args, |
| std::string &Path) 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. |
| Path = GetFilePath("crtfastmath.o"); |
| return (Path != "crtfastmath.o"); // Not found. |
| } |
| |
| bool ToolChain::addFastMathRuntimeIfAvailable(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| std::string Path; |
| if (isFastMathRuntimeAvailable(Args, Path)) { |
| CmdArgs.push_back(Args.MakeArgString(Path)); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| Expected<SmallVector<std::string>> |
| ToolChain::getSystemGPUArchs(const llvm::opt::ArgList &Args) const { |
| return SmallVector<std::string>(); |
| } |
| |
| SanitizerMask ToolChain::getSupportedSanitizers() const { |
| // Return sanitizers which don't require runtime support and are not |
| // platform dependent. |
| |
| SanitizerMask Res = |
| (SanitizerKind::Undefined & ~SanitizerKind::Vptr) | |
| (SanitizerKind::CFI & ~SanitizerKind::CFIICall) | |
| SanitizerKind::CFICastStrict | SanitizerKind::FloatDivideByZero | |
| SanitizerKind::KCFI | SanitizerKind::UnsignedIntegerOverflow | |
| SanitizerKind::UnsignedShiftBase | SanitizerKind::ImplicitConversion | |
| SanitizerKind::Nullability | SanitizerKind::LocalBounds; |
| if (getTriple().getArch() == llvm::Triple::x86 || |
| getTriple().getArch() == llvm::Triple::x86_64 || |
| getTriple().getArch() == llvm::Triple::arm || getTriple().isWasm() || |
| getTriple().isAArch64() || getTriple().isRISCV() || |
| getTriple().isLoongArch64()) |
| Res |= SanitizerKind::CFIICall; |
| if (getTriple().getArch() == llvm::Triple::x86_64 || |
| getTriple().isAArch64(64) || getTriple().isRISCV()) |
| Res |= SanitizerKind::ShadowCallStack; |
| if (getTriple().isAArch64(64)) |
| Res |= SanitizerKind::MemTag; |
| return Res; |
| } |
| |
| void ToolChain::AddCudaIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const {} |
| |
| void ToolChain::AddHIPIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const {} |
| |
| llvm::SmallVector<ToolChain::BitCodeLibraryInfo, 12> |
| ToolChain::getDeviceLibs(const ArgList &DriverArgs) const { |
| return {}; |
| } |
| |
| 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(); |
| } |
| |
| llvm::opt::DerivedArgList *ToolChain::TranslateOpenMPTargetArgs( |
| const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost, |
| SmallVectorImpl<llvm::opt::Arg *> &AllocatedArgs) const { |
| DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); |
| const OptTable &Opts = getDriver().getOpts(); |
| bool Modified = false; |
| |
| // Handle -Xopenmp-target flags |
| for (auto *A : Args) { |
| // Exclude flags which may only apply to the host toolchain. |
| // Do not exclude flags when the host triple (AuxTriple) |
| // matches the current toolchain triple. If it is not present |
| // at all, target and host share a toolchain. |
| if (A->getOption().matches(options::OPT_m_Group)) { |
| // Pass code object version to device toolchain |
| // to correctly set metadata in intermediate files. |
| if (SameTripleAsHost || |
| A->getOption().matches(options::OPT_mcode_object_version_EQ)) |
| DAL->append(A); |
| else |
| Modified = true; |
| continue; |
| } |
| |
| unsigned Index; |
| unsigned Prev; |
| bool XOpenMPTargetNoTriple = |
| A->getOption().matches(options::OPT_Xopenmp_target); |
| |
| if (A->getOption().matches(options::OPT_Xopenmp_target_EQ)) { |
| llvm::Triple TT(getOpenMPTriple(A->getValue(0))); |
| |
| // Passing device args: -Xopenmp-target=<triple> -opt=val. |
| if (TT.getTriple() == getTripleString()) |
| Index = Args.getBaseArgs().MakeIndex(A->getValue(1)); |
| else |
| continue; |
| } else if (XOpenMPTargetNoTriple) { |
| // Passing device args: -Xopenmp-target -opt=val. |
| Index = Args.getBaseArgs().MakeIndex(A->getValue(0)); |
| } else { |
| DAL->append(A); |
| continue; |
| } |
| |
| // Parse the argument to -Xopenmp-target. |
| Prev = Index; |
| std::unique_ptr<Arg> XOpenMPTargetArg(Opts.ParseOneArg(Args, Index)); |
| if (!XOpenMPTargetArg || Index > Prev + 1) { |
| getDriver().Diag(diag::err_drv_invalid_Xopenmp_target_with_args) |
| << A->getAsString(Args); |
| continue; |
| } |
| if (XOpenMPTargetNoTriple && XOpenMPTargetArg && |
| Args.getAllArgValues(options::OPT_fopenmp_targets_EQ).size() != 1) { |
| getDriver().Diag(diag::err_drv_Xopenmp_target_missing_triple); |
| continue; |
| } |
| XOpenMPTargetArg->setBaseArg(A); |
| A = XOpenMPTargetArg.release(); |
| AllocatedArgs.push_back(A); |
| DAL->append(A); |
| Modified = true; |
| } |
| |
| if (Modified) |
| return DAL; |
| |
| delete DAL; |
| return nullptr; |
| } |
| |
| // TODO: Currently argument values separated by space e.g. |
| // -Xclang -mframe-pointer=no cannot be passed by -Xarch_. This should be |
| // fixed. |
| void ToolChain::TranslateXarchArgs( |
| const llvm::opt::DerivedArgList &Args, llvm::opt::Arg *&A, |
| llvm::opt::DerivedArgList *DAL, |
| SmallVectorImpl<llvm::opt::Arg *> *AllocatedArgs) const { |
| const OptTable &Opts = getDriver().getOpts(); |
| unsigned ValuePos = 1; |
| if (A->getOption().matches(options::OPT_Xarch_device) || |
| A->getOption().matches(options::OPT_Xarch_host)) |
| ValuePos = 0; |
| |
| unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(ValuePos)); |
| unsigned Prev = Index; |
| std::unique_ptr<llvm::opt::Arg> XarchArg(Opts.ParseOneArg(Args, Index)); |
| |
| // If the argument parsing failed or more than one argument was |
| // consumed, the -Xarch_ argument's parameter tried to consume |
| // extra arguments. Emit an error and ignore. |
| // |
| // We also want to disallow any options which would alter the |
| // driver behavior; that isn't going to work in our model. We |
| // use options::NoXarchOption to control this. |
| if (!XarchArg || Index > Prev + 1) { |
| getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args) |
| << A->getAsString(Args); |
| return; |
| } else if (XarchArg->getOption().hasFlag(options::NoXarchOption)) { |
| auto &Diags = getDriver().getDiags(); |
| unsigned DiagID = |
| Diags.getCustomDiagID(DiagnosticsEngine::Error, |
| "invalid Xarch argument: '%0', not all driver " |
| "options can be forwared via Xarch argument"); |
| Diags.Report(DiagID) << A->getAsString(Args); |
| return; |
| } |
| XarchArg->setBaseArg(A); |
| A = XarchArg.release(); |
| if (!AllocatedArgs) |
| DAL->AddSynthesizedArg(A); |
| else |
| AllocatedArgs->push_back(A); |
| } |
| |
| llvm::opt::DerivedArgList *ToolChain::TranslateXarchArgs( |
| const llvm::opt::DerivedArgList &Args, StringRef BoundArch, |
| Action::OffloadKind OFK, |
| SmallVectorImpl<llvm::opt::Arg *> *AllocatedArgs) const { |
| DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); |
| bool Modified = false; |
| |
| bool IsDevice = OFK != Action::OFK_None && OFK != Action::OFK_Host; |
| for (Arg *A : Args) { |
| bool NeedTrans = false; |
| bool Skip = false; |
| if (A->getOption().matches(options::OPT_Xarch_device)) { |
| NeedTrans = IsDevice; |
| Skip = !IsDevice; |
| } else if (A->getOption().matches(options::OPT_Xarch_host)) { |
| NeedTrans = !IsDevice; |
| Skip = IsDevice; |
| } else if (A->getOption().matches(options::OPT_Xarch__) && IsDevice) { |
| // Do not translate -Xarch_ options for non CUDA/HIP toolchain since |
| // they may need special translation. |
| // Skip this argument unless the architecture matches BoundArch |
| if (BoundArch.empty() || A->getValue(0) != BoundArch) |
| Skip = true; |
| else |
| NeedTrans = true; |
| } |
| if (NeedTrans || Skip) |
| Modified = true; |
| if (NeedTrans) |
| TranslateXarchArgs(Args, A, DAL, AllocatedArgs); |
| if (!Skip) |
| DAL->append(A); |
| } |
| |
| if (Modified) |
| return DAL; |
| |
| delete DAL; |
| return nullptr; |
| } |