forked from OSchip/llvm-project
276 lines
9.7 KiB
C++
276 lines
9.7 KiB
C++
//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Driver/ToolChain.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Arg.h"
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#include "clang/Driver/ArgList.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "clang/Basic/ObjCRuntime.h"
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using namespace clang::driver;
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using namespace clang;
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ToolChain::ToolChain(const Driver &D, const llvm::Triple &T)
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: D(D), Triple(T) {
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}
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ToolChain::~ToolChain() {
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}
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const Driver &ToolChain::getDriver() const {
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return D;
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}
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std::string ToolChain::GetFilePath(const char *Name) const {
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return D.GetFilePath(Name, *this);
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}
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std::string ToolChain::GetProgramPath(const char *Name, bool WantFile) const {
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return D.GetProgramPath(Name, *this, WantFile);
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}
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types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
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return types::lookupTypeForExtension(Ext);
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}
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bool ToolChain::HasNativeLLVMSupport() const {
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return false;
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}
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ObjCRuntime ToolChain::getDefaultObjCRuntime(bool isNonFragile) const {
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return ObjCRuntime(isNonFragile ? ObjCRuntime::GNUstep : ObjCRuntime::GCC,
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VersionTuple());
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}
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/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
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//
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// FIXME: tblgen this.
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static const char *getARMTargetCPU(const ArgList &Args,
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const llvm::Triple &Triple) {
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// For Darwin targets, the -arch option (which is translated to a
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// corresponding -march option) should determine the architecture
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// (and the Mach-O slice) regardless of any -mcpu options.
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if (!Triple.isOSDarwin()) {
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// FIXME: Warn on inconsistent use of -mcpu and -march.
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// If we have -mcpu=, use that.
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if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
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return A->getValue(Args);
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}
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StringRef MArch;
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if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
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// Otherwise, if we have -march= choose the base CPU for that arch.
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MArch = A->getValue(Args);
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} else {
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// Otherwise, use the Arch from the triple.
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MArch = Triple.getArchName();
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}
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return llvm::StringSwitch<const char *>(MArch)
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.Cases("armv2", "armv2a","arm2")
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.Case("armv3", "arm6")
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.Case("armv3m", "arm7m")
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.Cases("armv4", "armv4t", "arm7tdmi")
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.Cases("armv5", "armv5t", "arm10tdmi")
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.Cases("armv5e", "armv5te", "arm1026ejs")
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.Case("armv5tej", "arm926ej-s")
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.Cases("armv6", "armv6k", "arm1136jf-s")
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.Case("armv6j", "arm1136j-s")
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.Cases("armv6z", "armv6zk", "arm1176jzf-s")
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.Case("armv6t2", "arm1156t2-s")
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.Cases("armv7", "armv7a", "armv7-a", "cortex-a8")
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.Cases("armv7r", "armv7-r", "cortex-r4")
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.Cases("armv7m", "armv7-m", "cortex-m3")
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.Case("ep9312", "ep9312")
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.Case("iwmmxt", "iwmmxt")
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.Case("xscale", "xscale")
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.Cases("armv6m", "armv6-m", "cortex-m0")
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// If all else failed, return the most base CPU LLVM supports.
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.Default("arm7tdmi");
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}
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/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
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/// CPU.
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//
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// FIXME: This is redundant with -mcpu, why does LLVM use this.
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// FIXME: tblgen this, or kill it!
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static const char *getLLVMArchSuffixForARM(StringRef CPU) {
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return llvm::StringSwitch<const char *>(CPU)
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.Cases("arm7tdmi", "arm7tdmi-s", "arm710t", "v4t")
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.Cases("arm720t", "arm9", "arm9tdmi", "v4t")
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.Cases("arm920", "arm920t", "arm922t", "v4t")
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.Cases("arm940t", "ep9312","v4t")
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.Cases("arm10tdmi", "arm1020t", "v5")
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.Cases("arm9e", "arm926ej-s", "arm946e-s", "v5e")
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.Cases("arm966e-s", "arm968e-s", "arm10e", "v5e")
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.Cases("arm1020e", "arm1022e", "xscale", "iwmmxt", "v5e")
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.Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "v6")
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.Cases("arm1176jzf-s", "mpcorenovfp", "mpcore", "v6")
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.Cases("arm1156t2-s", "arm1156t2f-s", "v6t2")
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.Cases("cortex-a8", "cortex-a9", "v7")
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.Case("cortex-m3", "v7m")
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.Case("cortex-m4", "v7m")
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.Case("cortex-m0", "v6m")
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.Default("");
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}
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std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
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types::ID InputType) const {
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switch (getTriple().getArch()) {
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default:
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return getTripleString();
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case llvm::Triple::arm:
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case llvm::Triple::thumb: {
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// FIXME: Factor into subclasses.
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llvm::Triple Triple = getTriple();
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// Thumb2 is the default for V7 on Darwin.
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//
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// FIXME: Thumb should just be another -target-feaure, not in the triple.
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StringRef Suffix =
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getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
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bool ThumbDefault = (Suffix == "v7" && getTriple().isOSDarwin());
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std::string ArchName = "arm";
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// Assembly files should start in ARM mode.
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if (InputType != types::TY_PP_Asm &&
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Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
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ArchName = "thumb";
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Triple.setArchName(ArchName + Suffix.str());
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return Triple.getTriple();
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}
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}
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}
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std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
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types::ID InputType) const {
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// Diagnose use of Darwin OS deployment target arguments on non-Darwin.
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if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
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options::OPT_miphoneos_version_min_EQ,
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options::OPT_mios_simulator_version_min_EQ))
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getDriver().Diag(diag::err_drv_clang_unsupported)
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<< A->getAsString(Args);
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return ComputeLLVMTriple(Args, InputType);
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}
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void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
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ArgStringList &CC1Args) const {
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// Each toolchain should provide the appropriate include flags.
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}
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void ToolChain::addClangTargetOptions(ArgStringList &CC1Args) const {
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}
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ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType(
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const ArgList &Args) const
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{
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if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
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StringRef Value = A->getValue(Args);
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if (Value == "compiler-rt")
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return ToolChain::RLT_CompilerRT;
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if (Value == "libgcc")
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return ToolChain::RLT_Libgcc;
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getDriver().Diag(diag::err_drv_invalid_rtlib_name)
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<< A->getAsString(Args);
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}
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return GetDefaultRuntimeLibType();
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}
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ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
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if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
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StringRef Value = A->getValue(Args);
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if (Value == "libc++")
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return ToolChain::CST_Libcxx;
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if (Value == "libstdc++")
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return ToolChain::CST_Libstdcxx;
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getDriver().Diag(diag::err_drv_invalid_stdlib_name)
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<< A->getAsString(Args);
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}
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return ToolChain::CST_Libstdcxx;
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}
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/// \brief Utility function to add a system include directory to CC1 arguments.
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/*static*/ void ToolChain::addSystemInclude(const ArgList &DriverArgs,
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ArgStringList &CC1Args,
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const Twine &Path) {
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CC1Args.push_back("-internal-isystem");
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CC1Args.push_back(DriverArgs.MakeArgString(Path));
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}
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/// \brief Utility function to add a system include directory with extern "C"
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/// semantics to CC1 arguments.
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///
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/// Note that this should be used rarely, and only for directories that
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/// historically and for legacy reasons are treated as having implicit extern
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/// "C" semantics. These semantics are *ignored* by and large today, but its
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/// important to preserve the preprocessor changes resulting from the
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/// classification.
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/*static*/ void ToolChain::addExternCSystemInclude(const ArgList &DriverArgs,
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ArgStringList &CC1Args,
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const Twine &Path) {
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CC1Args.push_back("-internal-externc-isystem");
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CC1Args.push_back(DriverArgs.MakeArgString(Path));
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}
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/// \brief Utility function to add a list of system include directories to CC1.
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/*static*/ void ToolChain::addSystemIncludes(const ArgList &DriverArgs,
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ArgStringList &CC1Args,
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ArrayRef<StringRef> Paths) {
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for (ArrayRef<StringRef>::iterator I = Paths.begin(), E = Paths.end();
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I != E; ++I) {
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CC1Args.push_back("-internal-isystem");
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CC1Args.push_back(DriverArgs.MakeArgString(*I));
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}
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}
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void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
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ArgStringList &CC1Args) const {
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// Header search paths should be handled by each of the subclasses.
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// Historically, they have not been, and instead have been handled inside of
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// the CC1-layer frontend. As the logic is hoisted out, this generic function
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// will slowly stop being called.
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//
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// While it is being called, replicate a bit of a hack to propagate the
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// '-stdlib=' flag down to CC1 so that it can in turn customize the C++
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// header search paths with it. Once all systems are overriding this
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// function, the CC1 flag and this line can be removed.
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DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
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}
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void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
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ArgStringList &CmdArgs) const {
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CXXStdlibType Type = GetCXXStdlibType(Args);
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switch (Type) {
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case ToolChain::CST_Libcxx:
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CmdArgs.push_back("-lc++");
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break;
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case ToolChain::CST_Libstdcxx:
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CmdArgs.push_back("-lstdc++");
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break;
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}
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}
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void ToolChain::AddCCKextLibArgs(const ArgList &Args,
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ArgStringList &CmdArgs) const {
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CmdArgs.push_back("-lcc_kext");
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}
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