| //===- 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 "InputInfo.h" |
| #include "ToolChains/Arch/ARM.h" |
| #include "ToolChains/Clang.h" |
| #include "clang/Basic/ObjCRuntime.h" |
| #include "clang/Basic/Sanitizers.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/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/StringRef.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/Config/llvm-config.h" |
| #include "llvm/MC/MCTargetOptions.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/Path.h" |
| #include "llvm/Support/TargetParser.h" |
| #include "llvm/Support/TargetRegistry.h" |
| #include "llvm/Support/VersionTuple.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 CPU. |
| return (Triple.isPS4CPU()) ? ToolChain::RM_Disabled : ToolChain::RM_Enabled; |
| } |
| |
| 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)) { |
| SmallString<128> P(D.ResourceDir); |
| llvm::sys::path::append(P, D.getTargetTriple(), "lib"); |
| if (getVFS().exists(P)) |
| getFilePaths().push_back(P.str()); |
| |
| std::string CandidateLibPath = getArchSpecificLibPath(); |
| if (getVFS().exists(CandidateLibPath)) |
| getFilePaths().push_back(CandidateLibPath); |
| } |
| |
| void ToolChain::setTripleEnvironment(llvm::Triple::EnvironmentType Env) { |
| Triple.setEnvironment(Env); |
| if (EffectiveTriple != llvm::Triple()) |
| EffectiveTriple.setEnvironment(Env); |
| } |
| |
| ToolChain::~ToolChain() = default; |
| |
| 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::useRelaxRelocations() const { |
| return ENABLE_X86_RELAX_RELOCATIONS; |
| } |
| |
| 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; |
| }; |
| |
| } // 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++"}, |
| }; |
| |
| for (size_t i = 0; i < llvm::array_lengthof(DriverSuffixes); ++i) { |
| StringRef Suffix(DriverSuffixes[i].Suffix); |
| if (ProgName.endswith(Suffix)) { |
| Pos = ProgName.size() - Suffix.size(); |
| 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. |
| static std::string normalizeProgramName(llvm::StringRef Argv0) { |
| std::string ProgName = llvm::sys::path::stem(Argv0); |
| #ifdef _WIN32 |
| // Transform to lowercase for case insensitive file systems. |
| std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), ::tolower); |
| #endif |
| 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) { |
| // 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(Prefix, IgnoredError); |
| return ParsedClangName{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, 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(); |
| } |
| } |
| |
| std::string ToolChain::getInputFilename(const InputInfo &Input) const { |
| return Input.getFilename(); |
| } |
| |
| bool ToolChain::IsUnwindTablesDefault(const ArgList &Args) 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 (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"; |
| |
| return llvm::Triple::getArchTypeName(TC.getArch()); |
| } |
| |
| StringRef ToolChain::getOSLibName() const { |
| 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"; |
| default: |
| return getOS(); |
| } |
| } |
| |
| std::string ToolChain::getCompilerRTPath() const { |
| SmallString<128> Path(getDriver().ResourceDir); |
| if (Triple.isOSUnknown()) { |
| llvm::sys::path::append(Path, "lib"); |
| } else { |
| llvm::sys::path::append(Path, "lib", getOSLibName()); |
| } |
| return Path.str(); |
| } |
| |
| std::string ToolChain::getCompilerRT(const ArgList &Args, StringRef Component, |
| bool Shared) const { |
| const llvm::Triple &TT = getTriple(); |
| bool IsITANMSVCWindows = |
| TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment(); |
| |
| const char *Prefix = IsITANMSVCWindows ? "" : "lib"; |
| const char *Suffix = Shared ? (Triple.isOSWindows() ? ".dll" : ".so") |
| : (IsITANMSVCWindows ? ".lib" : ".a"); |
| |
| const Driver &D = getDriver(); |
| SmallString<128> P(D.ResourceDir); |
| llvm::sys::path::append(P, D.getTargetTriple(), "lib"); |
| if (getVFS().exists(P)) { |
| llvm::sys::path::append(P, Prefix + Twine("clang_rt.") + Component + Suffix); |
| return P.str(); |
| } |
| |
| StringRef Arch = getArchNameForCompilerRTLib(*this, Args); |
| const char *Env = TT.isAndroid() ? "-android" : ""; |
| SmallString<128> Path(getCompilerRTPath()); |
| 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); |
| llvm::sys::path::append(Path, "lib", getOSLibName(), |
| 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::can_execute(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; |
| 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)) |
| 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()); |
| } |
| |
| 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.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::ProfileKind::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"; |
| |
| // Check if ARM ISA was explicitly selected (using -mno-thumb or -marm) for |
| // M-Class CPUs/architecture variants, which is not supported. |
| bool ARMModeRequested = !Args.hasFlag(options::OPT_mthumb, |
| options::OPT_mno_thumb, ThumbDefault); |
| if (IsMProfile && ARMModeRequested) { |
| if (!MCPU.empty()) |
| getDriver().Diag(diag::err_cpu_unsupported_isa) << CPU << "ARM"; |
| else |
| getDriver().Diag(diag::err_arch_unsupported_isa) |
| << tools::arm::getARMArch(MArch, getTriple()) << "ARM"; |
| } |
| |
| // Check to see if an explicit choice to use thumb has been made via |
| // -mthumb. For assembler files we must check for -mthumb in the options |
| // passed to the assember via -Wa or -Xassembler. |
| bool IsThumb = false; |
| if (InputType != types::TY_PP_Asm) |
| IsThumb = Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, |
| ThumbDefault); |
| else { |
| // Ideally we would check for these flags in |
| // CollectArgsForIntegratedAssembler but we can't change the ArchName at |
| // that point. There is no assembler equivalent of -mno-thumb, -marm, or |
| // -mno-arm. |
| for (const auto *A : |
| Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) { |
| for (StringRef Value : A->getValues()) { |
| if (Value == "-mthumb") |
| IsThumb = true; |
| } |
| } |
| } |
| // Assembly files should start in ARM mode, unless arch is M-profile, or |
| // -mthumb has been passed explicitly to the assembler. Windows is always |
| // thumb. |
| if (IsThumb || 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(); |
| } |
| |
| /// 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)); |
| } |
| } |
| |
| 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); |
| } |
| |
| 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++"); |
| 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 | |
| ImplicitConversion | 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; |
| if (getTriple().getArch() == llvm::Triple::x86_64 || |
| getTriple().getArch() == llvm::Triple::aarch64) |
| Res |= ShadowCallStack; |
| 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(); |
| } |
| |
| 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)) { |
| if (SameTripleAsHost) |
| 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)) { |
| // Passing device args: -Xopenmp-target=<triple> -opt=val. |
| if (A->getValue(0) == 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; |
| } |
