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-rw-r--r--contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp266
1 files changed, 266 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp
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+++ b/contrib/llvm/tools/clang/lib/Driver/ToolChain.cpp
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+//===--- 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 "clang/Driver/ToolChain.h"
+
+#include "clang/Driver/Action.h"
+#include "clang/Driver/Arg.h"
+#include "clang/Driver/ArgList.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/HostInfo.h"
+#include "clang/Driver/ObjCRuntime.h"
+#include "clang/Driver/Options.h"
+#include "llvm/Support/ErrorHandling.h"
+using namespace clang::driver;
+using namespace clang;
+
+ToolChain::ToolChain(const HostInfo &H, const llvm::Triple &T)
+ : Host(H), Triple(T) {
+}
+
+ToolChain::~ToolChain() {
+}
+
+const Driver &ToolChain::getDriver() const {
+ return Host.getDriver();
+}
+
+std::string ToolChain::GetFilePath(const char *Name) const {
+ return Host.getDriver().GetFilePath(Name, *this);
+
+}
+
+std::string ToolChain::GetProgramPath(const char *Name, bool WantFile) const {
+ return Host.getDriver().GetProgramPath(Name, *this, WantFile);
+}
+
+types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
+ return types::lookupTypeForExtension(Ext);
+}
+
+bool ToolChain::HasNativeLLVMSupport() const {
+ return false;
+}
+
+void ToolChain::configureObjCRuntime(ObjCRuntime &runtime) const {
+ switch (runtime.getKind()) {
+ case ObjCRuntime::NeXT:
+ // Assume a minimal NeXT runtime.
+ runtime.HasARC = false;
+ runtime.HasWeak = false;
+ runtime.HasTerminate = false;
+ return;
+
+ case ObjCRuntime::GNU:
+ // Assume a maximal GNU runtime.
+ runtime.HasARC = true;
+ runtime.HasWeak = true;
+ runtime.HasTerminate = false; // to be added
+ return;
+ }
+ llvm_unreachable("invalid runtime kind!");
+}
+
+/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
+//
+// FIXME: tblgen this.
+static const char *getARMTargetCPU(const ArgList &Args,
+ const llvm::Triple &Triple) {
+ // FIXME: Warn on inconsistent use of -mcpu and -march.
+
+ // If we have -mcpu=, use that.
+ if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
+ return A->getValue(Args);
+
+ StringRef MArch;
+ if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
+ // Otherwise, if we have -march= choose the base CPU for that arch.
+ MArch = A->getValue(Args);
+ } else {
+ // Otherwise, use the Arch from the triple.
+ MArch = Triple.getArchName();
+ }
+
+ if (MArch == "armv2" || MArch == "armv2a")
+ return "arm2";
+ if (MArch == "armv3")
+ return "arm6";
+ if (MArch == "armv3m")
+ return "arm7m";
+ if (MArch == "armv4" || MArch == "armv4t")
+ return "arm7tdmi";
+ if (MArch == "armv5" || MArch == "armv5t")
+ return "arm10tdmi";
+ if (MArch == "armv5e" || MArch == "armv5te")
+ return "arm1026ejs";
+ if (MArch == "armv5tej")
+ return "arm926ej-s";
+ if (MArch == "armv6" || MArch == "armv6k")
+ return "arm1136jf-s";
+ if (MArch == "armv6j")
+ return "arm1136j-s";
+ if (MArch == "armv6z" || MArch == "armv6zk")
+ return "arm1176jzf-s";
+ if (MArch == "armv6t2")
+ return "arm1156t2-s";
+ if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
+ return "cortex-a8";
+ if (MArch == "armv7r" || MArch == "armv7-r")
+ return "cortex-r4";
+ if (MArch == "armv7m" || MArch == "armv7-m")
+ return "cortex-m3";
+ if (MArch == "ep9312")
+ return "ep9312";
+ if (MArch == "iwmmxt")
+ return "iwmmxt";
+ if (MArch == "xscale")
+ return "xscale";
+ if (MArch == "armv6m" || MArch == "armv6-m")
+ return "cortex-m0";
+
+ // If all else failed, return the most base CPU LLVM supports.
+ return "arm7tdmi";
+}
+
+/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
+/// CPU.
+//
+// FIXME: This is redundant with -mcpu, why does LLVM use this.
+// FIXME: tblgen this, or kill it!
+static const char *getLLVMArchSuffixForARM(StringRef CPU) {
+ if (CPU == "arm7tdmi" || CPU == "arm7tdmi-s" || CPU == "arm710t" ||
+ CPU == "arm720t" || CPU == "arm9" || CPU == "arm9tdmi" ||
+ CPU == "arm920" || CPU == "arm920t" || CPU == "arm922t" ||
+ CPU == "arm940t" || CPU == "ep9312")
+ return "v4t";
+
+ if (CPU == "arm10tdmi" || CPU == "arm1020t")
+ return "v5";
+
+ if (CPU == "arm9e" || CPU == "arm926ej-s" || CPU == "arm946e-s" ||
+ CPU == "arm966e-s" || CPU == "arm968e-s" || CPU == "arm10e" ||
+ CPU == "arm1020e" || CPU == "arm1022e" || CPU == "xscale" ||
+ CPU == "iwmmxt")
+ return "v5e";
+
+ if (CPU == "arm1136j-s" || CPU == "arm1136jf-s" || CPU == "arm1176jz-s" ||
+ CPU == "arm1176jzf-s" || CPU == "mpcorenovfp" || CPU == "mpcore")
+ return "v6";
+
+ if (CPU == "arm1156t2-s" || CPU == "arm1156t2f-s")
+ return "v6t2";
+
+ if (CPU == "cortex-a8" || CPU == "cortex-a9")
+ return "v7";
+
+ if (CPU == "cortex-m3")
+ return "v7m";
+
+ if (CPU == "cortex-m0")
+ return "v6m";
+
+ return "";
+}
+
+std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
+ types::ID InputType) const {
+ switch (getTriple().getArch()) {
+ default:
+ return getTripleString();
+
+ case llvm::Triple::arm:
+ case llvm::Triple::thumb: {
+ // FIXME: Factor into subclasses.
+ llvm::Triple Triple = getTriple();
+
+ // Thumb2 is the default for V7 on Darwin.
+ //
+ // FIXME: Thumb should just be another -target-feaure, not in the triple.
+ StringRef Suffix =
+ getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
+ bool ThumbDefault = (Suffix == "v7" && getTriple().isOSDarwin());
+ std::string 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))
+ ArchName = "thumb";
+ Triple.setArchName(ArchName + Suffix.str());
+
+ return Triple.getTriple();
+ }
+ }
+}
+
+std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
+ types::ID InputType) const {
+ // Diagnose use of Darwin OS deployment target arguments on non-Darwin.
+ if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
+ options::OPT_miphoneos_version_min_EQ,
+ options::OPT_mios_simulator_version_min_EQ))
+ getDriver().Diag(diag::err_drv_clang_unsupported)
+ << A->getAsString(Args);
+
+ return ComputeLLVMTriple(Args, InputType);
+}
+
+ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
+ if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
+ StringRef Value = A->getValue(Args);
+ 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;
+}
+
+void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &Args,
+ ArgStringList &CmdArgs,
+ bool ObjCXXAutoRefCount) const {
+ CXXStdlibType Type = GetCXXStdlibType(Args);
+
+ // Header search paths are handled by the mass of goop in InitHeaderSearch.
+
+ switch (Type) {
+ case ToolChain::CST_Libcxx:
+ if (ObjCXXAutoRefCount)
+ CmdArgs.push_back("-fobjc-arc-cxxlib=libc++");
+ break;
+
+ case ToolChain::CST_Libstdcxx:
+ if (ObjCXXAutoRefCount)
+ CmdArgs.push_back("-fobjc-arc-cxxlib=libstdc++");
+ break;
+ }
+}
+
+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");
+}
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