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diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp
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+//===--- 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 "Tools.h"
+#include "clang/Basic/ObjCRuntime.h"
+#include "clang/Driver/Action.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/Options.h"
+#include "clang/Driver/SanitizerArgs.h"
+#include "clang/Driver/ToolChain.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
+using namespace clang::driver;
+using namespace clang;
+using namespace llvm::opt;
+
+ToolChain::ToolChain(const Driver &D, const llvm::Triple &T,
+ const ArgList &A)
+ : D(D), Triple(T), Args(A) {
+}
+
+ToolChain::~ToolChain() {
+}
+
+const Driver &ToolChain::getDriver() const {
+ return D;
+}
+
+bool ToolChain::useIntegratedAs() const {
+ return Args.hasFlag(options::OPT_integrated_as,
+ options::OPT_no_integrated_as,
+ IsIntegratedAssemblerDefault());
+}
+
+const SanitizerArgs& ToolChain::getSanitizerArgs() const {
+ if (!SanitizerArguments.get())
+ SanitizerArguments.reset(new SanitizerArgs(*this, Args));
+ return *SanitizerArguments.get();
+}
+
+std::string ToolChain::getDefaultUniversalArchName() const {
+ // In universal driver terms, the arch name accepted by -arch isn't exactly
+ // the same as the ones that appear in the triple. Roughly speaking, this is
+ // an inverse of the darwin::getArchTypeForDarwinArchName() function, but the
+ // only interesting special case is powerpc.
+ switch (Triple.getArch()) {
+ case llvm::Triple::ppc:
+ return "ppc";
+ case llvm::Triple::ppc64:
+ return "ppc64";
+ case llvm::Triple::ppc64le:
+ return "ppc64le";
+ default:
+ return Triple.getArchName();
+ }
+}
+
+bool ToolChain::IsUnwindTablesDefault() const {
+ return false;
+}
+
+Tool *ToolChain::getClang() const {
+ if (!Clang)
+ Clang.reset(new tools::Clang(*this));
+ return Clang.get();
+}
+
+Tool *ToolChain::buildAssembler() const {
+ return new tools::ClangAs(*this);
+}
+
+Tool *ToolChain::buildLinker() const {
+ llvm_unreachable("Linking is not supported by this toolchain");
+}
+
+Tool *ToolChain::getAssemble() const {
+ if (!Assemble)
+ Assemble.reset(buildAssembler());
+ return Assemble.get();
+}
+
+Tool *ToolChain::getClangAs() const {
+ if (!Assemble)
+ Assemble.reset(new tools::ClangAs(*this));
+ return Assemble.get();
+}
+
+Tool *ToolChain::getLink() const {
+ if (!Link)
+ Link.reset(buildLinker());
+ return Link.get();
+}
+
+Tool *ToolChain::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::LipoJobClass:
+ case Action::DsymutilJobClass:
+ case Action::VerifyJobClass:
+ llvm_unreachable("Invalid tool kind.");
+
+ case Action::CompileJobClass:
+ case Action::PrecompileJobClass:
+ case Action::PreprocessJobClass:
+ case Action::AnalyzeJobClass:
+ case Action::MigrateJobClass:
+ return getClang();
+ }
+
+ llvm_unreachable("Invalid tool kind.");
+}
+
+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);
+}
+
+types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
+ return types::lookupTypeForExtension(Ext);
+}
+
+bool ToolChain::HasNativeLLVMSupport() const {
+ return false;
+}
+
+ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
+ return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
+ VersionTuple());
+}
+
+/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
+//
+// FIXME: tblgen this.
+static const char *getARMTargetCPU(const ArgList &Args,
+ const llvm::Triple &Triple) {
+ // For Darwin targets, the -arch option (which is translated to a
+ // corresponding -march option) should determine the architecture
+ // (and the Mach-O slice) regardless of any -mcpu options.
+ if (!Triple.isOSDarwin()) {
+ // FIXME: Warn on inconsistent use of -mcpu and -march.
+ // If we have -mcpu=, use that.
+ if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
+ return A->getValue();
+ }
+
+ StringRef MArch;
+ if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
+ // Otherwise, if we have -march= choose the base CPU for that arch.
+ MArch = A->getValue();
+ } else {
+ // Otherwise, use the Arch from the triple.
+ MArch = Triple.getArchName();
+ }
+
+ if (Triple.getOS() == llvm::Triple::NetBSD) {
+ if (MArch == "armv6")
+ return "arm1176jzf-s";
+ }
+
+ const char *result = llvm::StringSwitch<const char *>(MArch)
+ .Cases("armv2", "armv2a","arm2")
+ .Case("armv3", "arm6")
+ .Case("armv3m", "arm7m")
+ .Case("armv4", "strongarm")
+ .Case("armv4t", "arm7tdmi")
+ .Cases("armv5", "armv5t", "arm10tdmi")
+ .Cases("armv5e", "armv5te", "arm1026ejs")
+ .Case("armv5tej", "arm926ej-s")
+ .Cases("armv6", "armv6k", "arm1136jf-s")
+ .Case("armv6j", "arm1136j-s")
+ .Cases("armv6z", "armv6zk", "arm1176jzf-s")
+ .Case("armv6t2", "arm1156t2-s")
+ .Cases("armv6m", "armv6-m", "cortex-m0")
+ .Cases("armv7", "armv7a", "armv7-a", "cortex-a8")
+ .Cases("armv7l", "armv7-l", "cortex-a8")
+ .Cases("armv7f", "armv7-f", "cortex-a9-mp")
+ .Cases("armv7s", "armv7-s", "swift")
+ .Cases("armv7r", "armv7-r", "cortex-r4")
+ .Cases("armv7m", "armv7-m", "cortex-m3")
+ .Cases("armv7em", "armv7e-m", "cortex-m4")
+ .Cases("armv8", "armv8a", "armv8-a", "cortex-a53")
+ .Case("ep9312", "ep9312")
+ .Case("iwmmxt", "iwmmxt")
+ .Case("xscale", "xscale")
+ // If all else failed, return the most base CPU with thumb interworking
+ // supported by LLVM.
+ .Default(0);
+
+ if (result)
+ return result;
+
+ return
+ Triple.getEnvironment() == llvm::Triple::GNUEABIHF
+ ? "arm1176jzf-s"
+ : "arm7tdmi";
+}
+
+/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
+/// CPU.
+//
+// FIXME: This is redundant with -mcpu, why does LLVM use this.
+// FIXME: tblgen this, or kill it!
+static const char *getLLVMArchSuffixForARM(StringRef CPU) {
+ return llvm::StringSwitch<const char *>(CPU)
+ .Case("strongarm", "v4")
+ .Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t")
+ .Cases("arm720t", "arm9", "arm9tdmi", "v4t")
+ .Cases("arm920", "arm920t", "arm922t", "v4t")
+ .Cases("arm940t", "ep9312","v4t")
+ .Cases("arm10tdmi", "arm1020t", "v5")
+ .Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e")
+ .Cases("arm966e-s", "arm968e-s", "arm10e", "v5e")
+ .Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e")
+ .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6")
+ .Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6")
+ .Cases("arm1156t2-s", "arm1156t2f-s", "v6t2")
+ .Cases("cortex-a5", "cortex-a7", "cortex-a8", "v7")
+ .Cases("cortex-a9", "cortex-a12", "cortex-a15", "v7")
+ .Cases("cortex-r4", "cortex-r5", "v7r")
+ .Case("cortex-m0", "v6m")
+ .Case("cortex-m3", "v7m")
+ .Case("cortex-m4", "v7em")
+ .Case("cortex-a9-mp", "v7f")
+ .Case("swift", "v7s")
+ .Cases("cortex-a53", "cortex-a57", "v8")
+ .Default("");
+}
+
+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.isOSDarwin())
+ 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::arm:
+ case llvm::Triple::thumb: {
+ // FIXME: Factor into subclasses.
+ llvm::Triple Triple = getTriple();
+
+ // Thumb2 is the default for V7 on Darwin.
+ //
+ // FIXME: Thumb should just be another -target-feaure, not in the triple.
+ StringRef Suffix =
+ getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
+ bool ThumbDefault = Suffix.startswith("v6m") ||
+ (Suffix.startswith("v7") && getTriple().isOSDarwin());
+ std::string ArchName = "arm";
+
+ // Assembly files should start in ARM mode.
+ if (InputType != types::TY_PP_Asm &&
+ Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
+ ArchName = "thumb";
+ Triple.setArchName(ArchName + Suffix.str());
+
+ return Triple.getTriple();
+ }
+ }
+}
+
+std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
+ types::ID InputType) const {
+ // Diagnose use of Darwin OS deployment target arguments on non-Darwin.
+ if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
+ options::OPT_miphoneos_version_min_EQ,
+ options::OPT_mios_simulator_version_min_EQ))
+ getDriver().Diag(diag::err_drv_clang_unsupported)
+ << A->getAsString(Args);
+
+ 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) const {
+}
+
+ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
+ const ArgList &Args) const
+{
+ if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value == "compiler-rt")
+ return ToolChain::RLT_CompilerRT;
+ if (Value == "libgcc")
+ return ToolChain::RLT_Libgcc;
+ getDriver().Diag(diag::err_drv_invalid_rtlib_name)
+ << A->getAsString(Args);
+ }
+
+ return GetDefaultRuntimeLibType();
+}
+
+ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
+ if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value == "libc++")
+ return ToolChain::CST_Libcxx;
+ if (Value == "libstdc++")
+ return ToolChain::CST_Libstdcxx;
+ getDriver().Diag(diag::err_drv_invalid_stdlib_name)
+ << A->getAsString(Args);
+ }
+
+ return ToolChain::CST_Libstdcxx;
+}
+
+/// \brief Utility function to add a system include directory to CC1 arguments.
+/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
+ ArgStringList &CC1Args,
+ const Twine &Path) {
+ CC1Args.push_back("-internal-isystem");
+ CC1Args.push_back(DriverArgs.MakeArgString(Path));
+}
+
+/// \brief Utility function to add a system include directory with extern "C"
+/// semantics to CC1 arguments.
+///
+/// Note that this should be used rarely, and only for directories that
+/// historically and for legacy reasons are treated as having implicit extern
+/// "C" semantics. These semantics are *ignored* by and large today, but its
+/// important to preserve the preprocessor changes resulting from the
+/// classification.
+/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
+ ArgStringList &CC1Args,
+ const Twine &Path) {
+ CC1Args.push_back("-internal-externc-isystem");
+ CC1Args.push_back(DriverArgs.MakeArgString(Path));
+}
+
+void ToolChain::addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
+ ArgStringList &CC1Args,
+ const Twine &Path) {
+ if (llvm::sys::fs::exists(Path))
+ addExternCSystemInclude(DriverArgs, CC1Args, Path);
+}
+
+/// \brief Utility function to add a list of system include directories to CC1.
+/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
+ ArgStringList &CC1Args,
+ ArrayRef<StringRef> Paths) {
+ for (ArrayRef<StringRef>::iterator I = Paths.begin(), E = Paths.end();
+ I != E; ++I) {
+ CC1Args.push_back("-internal-isystem");
+ CC1Args.push_back(DriverArgs.MakeArgString(*I));
+ }
+}
+
+void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ // Header search paths should be handled by each of the subclasses.
+ // Historically, they have not been, and instead have been handled inside of
+ // the CC1-layer frontend. As the logic is hoisted out, this generic function
+ // will slowly stop being called.
+ //
+ // While it is being called, replicate a bit of a hack to propagate the
+ // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
+ // header search paths with it. Once all systems are overriding this
+ // function, the CC1 flag and this line can be removed.
+ DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
+}
+
+void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ CXXStdlibType Type = GetCXXStdlibType(Args);
+
+ switch (Type) {
+ case ToolChain::CST_Libcxx:
+ CmdArgs.push_back("-lc++");
+ break;
+
+ case ToolChain::CST_Libstdcxx:
+ CmdArgs.push_back("-lstdc++");
+ break;
+ }
+}
+
+void ToolChain::AddCCKextLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ CmdArgs.push_back("-lcc_kext");
+}
+
+bool ToolChain::AddFastMathRuntimeIfAvailable(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ // Check if -ffast-math or -funsafe-math is enabled.
+ 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;
+}
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