f7639e1b4a
the new Objective-C NSArray/NSDictionary/NSNumber literal syntax. This introduces a new library, libEdit, which provides a new way to support migration of code that improves on the original ARC migrator. We now believe that most of its functionality can be refactored into the existing libraries, and thus this new library may shortly disappear. llvm-svn: 152141
317 lines
10 KiB
C++
317 lines
10 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/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 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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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.HasSubscripting = 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.HasSubscripting = false; // to be added
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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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/// \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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