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-rw-r--r--gnu/llvm/clang/lib/Driver/ToolChain.cpp1095
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diff --git a/gnu/llvm/clang/lib/Driver/ToolChain.cpp b/gnu/llvm/clang/lib/Driver/ToolChain.cpp
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+++ b/gnu/llvm/clang/lib/Driver/ToolChain.cpp
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+//===- 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 "InputInfo.h"
+#include "ToolChains/Arch/ARM.h"
+#include "ToolChains/Clang.h"
+#include "ToolChains/InterfaceStubs.h"
+#include "ToolChains/Flang.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/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 "llvm/Support/VirtualFileSystem.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)) {
+ if (D.CCCIsCXX()) {
+ if (auto CXXStdlibPath = getCXXStdlibPath())
+ getFilePaths().push_back(*CXXStdlibPath);
+ }
+
+ if (auto RuntimePath = getRuntimePath())
+ getLibraryPaths().push_back(*RuntimePath);
+
+ 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;
+
+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::useRelaxRelocations() const {
+ return ENABLE_X86_RELAX_RELOCATIONS;
+}
+
+bool ToolChain::isNoExecStackDefault() const {
+ return false;
+}
+
+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++"},
+ {"flang", "--driver-mode=flang"},
+ };
+
+ 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::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::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::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::getOffloadWrapper() const {
+ if (!OffloadWrapper)
+ OffloadWrapper.reset(new tools::OffloadWrapper(*this));
+ return OffloadWrapper.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::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::HeaderModulePrecompileJobClass:
+ 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();
+
+ case Action::OffloadWrapperJobClass:
+ return getOffloadWrapper();
+ }
+
+ 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,
+ FileType Type) 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 = Triple.isOSWindows()
+ ? (Triple.isWindowsGNUEnvironment() ? ".dll.a" : ".lib")
+ : ".so";
+ break;
+ }
+
+ for (const auto &LibPath : getLibraryPaths()) {
+ SmallString<128> P(LibPath);
+ llvm::sys::path::append(P, Prefix + Twine("clang_rt.") + Component + Suffix);
+ if (getVFS().exists(P))
+ 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,
+ FileType Type) const {
+ return Args.MakeArgString(getCompilerRT(Args, Component, Type));
+}
+
+
+Optional<std::string> ToolChain::getRuntimePath() const {
+ SmallString<128> P;
+
+ // First try the triple passed to driver as --target=<triple>.
+ P.assign(D.ResourceDir);
+ llvm::sys::path::append(P, "lib", D.getTargetTriple());
+ if (getVFS().exists(P))
+ return llvm::Optional<std::string>(P.str());
+
+ // Second try the normalized triple.
+ P.assign(D.ResourceDir);
+ llvm::sys::path::append(P, "lib", Triple.str());
+ if (getVFS().exists(P))
+ return llvm::Optional<std::string>(P.str());
+
+ return None;
+}
+
+Optional<std::string> ToolChain::getCXXStdlibPath() const {
+ SmallString<128> P;
+
+ // First try the triple passed to driver as --target=<triple>.
+ P.assign(D.Dir);
+ llvm::sys::path::append(P, "..", "lib", D.getTargetTriple(), "c++");
+ if (getVFS().exists(P))
+ return llvm::Optional<std::string>(P.str());
+
+ // Second try the normalized triple.
+ P.assign(D.Dir);
+ llvm::sys::path::append(P, "..", "lib", Triple.str(), "c++");
+ if (getVFS().exists(P))
+ return llvm::Optional<std::string>(P.str());
+
+ return None;
+}
+
+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.hasArg(options::OPT_noprofilelib))
+ return false;
+
+ if (needsGCovInstrumentation(Args) ||
+ 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))
+ return true;
+
+ return false;
+}
+
+bool ToolChain::needsGCovInstrumentation(const llvm::opt::ArgList &Args) {
+ return Args.hasFlag(options::OPT_fprofile_arcs, options::OPT_fno_profile_arcs,
+ false) ||
+ Args.hasArg(options::OPT_coverage);
+}
+
+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())
+ 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 {
+ 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.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::aarch64_32:
+ return getTripleString();
+ 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 assembler 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::UnwindLibType ToolChain::GetUnwindLibType(
+ const ArgList &Args) const {
+ const Arg *A = Args.getLastArg(options::OPT_unwindlib_EQ);
+ StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_UNWINDLIB;
+
+ if (LibName == "none")
+ return ToolChain::UNW_None;
+ else if (LibName == "platform" || LibName == "") {
+ ToolChain::RuntimeLibType RtLibType = GetRuntimeLibType(Args);
+ if (RtLibType == ToolChain::RLT_CompilerRT)
+ return ToolChain::UNW_None;
+ else if (RtLibType == ToolChain::RLT_Libgcc)
+ return ToolChain::UNW_Libgcc;
+ } else if (LibName == "libunwind") {
+ if (GetRuntimeLibType(Args) == RLT_Libgcc)
+ getDriver().Diag(diag::err_drv_incompatible_unwindlib);
+ return ToolChain::UNW_CompilerRT;
+ } else if (LibName == "libgcc")
+ return ToolChain::UNW_Libgcc;
+
+ if (A)
+ getDriver().Diag(diag::err_drv_invalid_unwindlib_name)
+ << A->getAsString(Args);
+
+ return GetDefaultUnwindLibType();
+}
+
+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);
+}
+
+void ToolChain::AddClangCXXStdlibIsystemArgs(
+ const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const {
+ DriverArgs.ClaimAllArgs(options::OPT_stdlibxx_isystem);
+ 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++");
+ 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.
+
+ SanitizerMask Res = (SanitizerKind::Undefined & ~SanitizerKind::Vptr &
+ ~SanitizerKind::Function) |
+ (SanitizerKind::CFI & ~SanitizerKind::CFIICall) |
+ SanitizerKind::CFICastStrict |
+ SanitizerKind::FloatDivideByZero |
+ SanitizerKind::UnsignedIntegerOverflow |
+ SanitizerKind::ImplicitConversion |
+ SanitizerKind::Nullability | SanitizerKind::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 |= SanitizerKind::CFIICall;
+ if (getTriple().getArch() == llvm::Triple::x86_64 ||
+ getTriple().getArch() == llvm::Triple::aarch64)
+ Res |= SanitizerKind::ShadowCallStack;
+ if (getTriple().getArch() == llvm::Triple::aarch64 ||
+ getTriple().getArch() == llvm::Triple::aarch64_be)
+ Res |= SanitizerKind::MemTag;
+ 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;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.