| //===--- 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_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); |
| } |
| |
| 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; |
| |
| // 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()); |
| 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; |
| } |