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Diffstat (limited to 'contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp new file mode 100644 index 0000000..4f90d08 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp @@ -0,0 +1,420 @@ +//===--- 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/SmallString.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_fintegrated_as, + options::OPT_fno_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::VerifyDebugInfoJobClass: + llvm_unreachable("Invalid tool kind."); + + case Action::CompileJobClass: + case Action::PrecompileJobClass: + case Action::PreprocessJobClass: + case Action::AnalyzeJobClass: + case Action::MigrateJobClass: + case Action::VerifyPCHJobClass: + 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); +} + +std::string ToolChain::GetLinkerPath() const { + if (Arg *A = Args.getLastArg(options::OPT_fuse_ld_EQ)) { + StringRef Suffix = A->getValue(); + + // If we're passed -fuse-ld= with no argument, or with the argument ld, + // then use whatever the default system linker is. + if (Suffix.empty() || Suffix == "ld") + return GetProgramPath("ld"); + + llvm::SmallString<8> LinkerName("ld."); + LinkerName.append(Suffix); + + std::string LinkerPath(GetProgramPath(LinkerName.c_str())); + if (llvm::sys::fs::exists(LinkerPath)) + return LinkerPath; + + getDriver().Diag(diag::err_drv_invalid_linker_name) << A->getAsString(Args); + return ""; + } + + return GetProgramPath("ld"); +} + + +types::ID ToolChain::LookupTypeForExtension(const char *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()); +} + +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::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)) { + if (A->getOption().matches(options::OPT_mlittle_endian)) + IsBigEndian = false; + else + IsBigEndian = true; + } + + // Thumb2 is the default for V7 on Darwin. + // + // FIXME: Thumb should just be another -target-feaure, not in the triple. + StringRef Suffix = Triple.isOSBinFormatMachO() + ? tools::arm::getLLVMArchSuffixForARM(tools::arm::getARMCPUForMArch(Args, Triple)) + : tools::arm::getLLVMArchSuffixForARM(tools::arm::getARMTargetCPU(Args, Triple)); + bool ThumbDefault = Suffix.startswith("v6m") || Suffix.startswith("v7m") || + Suffix.startswith("v7em") || + (Suffix.startswith("v7") && getTriple().isOSBinFormatMachO()); + // FIXME: this is invalid for WindowsCE + if (getTriple().isOSWindows()) + ThumbDefault = true; + std::string ArchName; + if (IsBigEndian) + ArchName = "armeb"; + else + 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)) + { + 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) const { +} + +void ToolChain::addClangWarningOptions(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 { + // 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; +} |
