forked from OSchip/llvm-project
282 lines
8.7 KiB
C++
282 lines
8.7 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/HostInfo.h"
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#include "clang/Driver/ObjCRuntime.h"
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#include "clang/Driver/Options.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace clang::driver;
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using namespace clang;
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ToolChain::ToolChain(const HostInfo &H, const llvm::Triple &T)
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: Host(H), 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 Host.getDriver();
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}
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std::string ToolChain::GetFilePath(const char *Name) const {
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return Host.getDriver().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 Host.getDriver().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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void ToolChain::configureObjCRuntime(ObjCRuntime &runtime) const {
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switch (runtime.getKind()) {
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case ObjCRuntime::NeXT:
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// Assume a minimal NeXT runtime.
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runtime.HasARC = false;
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runtime.HasWeak = false;
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runtime.HasTerminate = false;
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return;
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case ObjCRuntime::GNU:
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// Assume a maximal GNU runtime.
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runtime.HasARC = true;
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runtime.HasWeak = true;
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runtime.HasTerminate = false; // to be added
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return;
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}
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llvm_unreachable("invalid runtime kind!");
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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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// 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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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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if (MArch == "armv2" || MArch == "armv2a")
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return "arm2";
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if (MArch == "armv3")
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return "arm6";
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if (MArch == "armv3m")
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return "arm7m";
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if (MArch == "armv4" || MArch == "armv4t")
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return "arm7tdmi";
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if (MArch == "armv5" || MArch == "armv5t")
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return "arm10tdmi";
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if (MArch == "armv5e" || MArch == "armv5te")
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return "arm1026ejs";
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if (MArch == "armv5tej")
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return "arm926ej-s";
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if (MArch == "armv6" || MArch == "armv6k")
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return "arm1136jf-s";
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if (MArch == "armv6j")
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return "arm1136j-s";
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if (MArch == "armv6z" || MArch == "armv6zk")
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return "arm1176jzf-s";
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if (MArch == "armv6t2")
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return "arm1156t2-s";
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if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
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return "cortex-a8";
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if (MArch == "armv7r" || MArch == "armv7-r")
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return "cortex-r4";
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if (MArch == "armv7m" || MArch == "armv7-m")
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return "cortex-m3";
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if (MArch == "ep9312")
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return "ep9312";
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if (MArch == "iwmmxt")
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return "iwmmxt";
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if (MArch == "xscale")
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return "xscale";
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if (MArch == "armv6m" || MArch == "armv6-m")
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return "cortex-m0";
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// If all else failed, return the most base CPU LLVM supports.
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return "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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if (CPU == "arm7tdmi" || CPU == "arm7tdmi-s" || CPU == "arm710t" ||
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CPU == "arm720t" || CPU == "arm9" || CPU == "arm9tdmi" ||
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CPU == "arm920" || CPU == "arm920t" || CPU == "arm922t" ||
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CPU == "arm940t" || CPU == "ep9312")
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return "v4t";
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if (CPU == "arm10tdmi" || CPU == "arm1020t")
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return "v5";
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if (CPU == "arm9e" || CPU == "arm926ej-s" || CPU == "arm946e-s" ||
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CPU == "arm966e-s" || CPU == "arm968e-s" || CPU == "arm10e" ||
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CPU == "arm1020e" || CPU == "arm1022e" || CPU == "xscale" ||
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CPU == "iwmmxt")
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return "v5e";
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if (CPU == "arm1136j-s" || CPU == "arm1136jf-s" || CPU == "arm1176jz-s" ||
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CPU == "arm1176jzf-s" || CPU == "mpcorenovfp" || CPU == "mpcore")
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return "v6";
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if (CPU == "arm1156t2-s" || CPU == "arm1156t2f-s")
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return "v6t2";
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if (CPU == "cortex-a8" || CPU == "cortex-a9")
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return "v7";
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if (CPU == "cortex-m3")
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return "v7m";
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if (CPU == "cortex-m0")
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return "v6m";
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return "";
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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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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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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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