Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 965 deletions

diff --git a/gnu/llvm/tools/clang/lib/Driver/ToolChain.cpp b/gnu/llvm/tools/clang/lib/Driver/ToolChain.cpp
deleted file mode 100644
index 88a627eab6d..00000000000
--- a/gnu/llvm/tools/clang/lib/Driver/ToolChain.cpp
+++ /dev/null
@@ -1,965 +0,0 @@
-//===- 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/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)) {
-  SmallString<128> P;
-
-  P.assign(D.ResourceDir);
-  llvm::sys::path::append(P, D.getTargetTriple(), "lib");
-  if (getVFS().exists(P))
-    getLibraryPaths().push_back(P.str());
-
-  P.assign(D.ResourceDir);
-  llvm::sys::path::append(P, Triple.str(), "lib");
-  if (getVFS().exists(P))
-    getLibraryPaths().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;
-
-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;
-}
-
-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::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();
-  }
-
-  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() ? ".lib" : ".so")
-                              : (IsITANMSVCWindows ? ".lib" : ".a");
-  if (Shared && Triple.isWindowsGNUEnvironment())
-    Suffix = ".dll.a";
-
-  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,
-                                              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 (needsGCovInstrumentation(Args) ||
-      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))
-    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 (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 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::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 : getLibraryPaths())
-    if(LibPath.length() > 0)
-      CmdArgs.push_back(Args.MakeArgString(StringRef("-L") + LibPath));
-
-  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;
-}