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Driver: Pass down the -march setting down to -cc1as on x86 too. 

The assembler historically didn't make use of any target features, but this has
changed when support for old CPUs that don't support long nops was added.

llvm-svn: 175919
This commit is contained in:
Benjamin Kramer 2013-02-22 20:55:17 +00:00
parent 2f81db66af
commit b164d67d07
3 changed files with 23 additions and 0 deletions
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14
clang/lib/Driver/Tools.cpp
View File

@ -3325,6 +3325,15 @@ void ClangAs::AddARMTargetArgs(const ArgList &Args,
addFPMathArgs(D, A, Args, CmdArgs, getARMTargetCPU(Args, Triple));
}
void ClangAs::AddX86TargetArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
// Set the CPU based on -march=.
if (const char *CPUName = getX86TargetCPU(Args, getToolChain().getTriple())) {
CmdArgs.push_back("-target-cpu");
CmdArgs.push_back(CPUName);
}
}
/// Add options related to the Objective-C runtime/ABI.
///
/// Returns true if the runtime is non-fragile.
@ -3500,6 +3509,11 @@ void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
case llvm::Triple::thumb:
AddARMTargetArgs(Args, CmdArgs);
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
AddX86TargetArgs(Args, CmdArgs);
break;
}
// Ignore explicit -force_cpusubtype_ALL option.

1
clang/lib/Driver/Tools.h
View File

@ -77,6 +77,7 @@ namespace tools {
/// \brief Clang integrated assembler tool.
class LLVM_LIBRARY_VISIBILITY ClangAs : public Tool {
void AddARMTargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const;
void AddX86TargetArgs(const ArgList &Args, ArgStringList &CmdArgs) const;
public:
ClangAs(const ToolChain &TC) : Tool("clang::as",
"clang integrated assembler", TC) {}

8
clang/test/Driver/target-as.s Normal file
View File

@ -0,0 +1,8 @@
// REQUIRES: clang-driver
// Make sure the -march is passed down to cc1as.
// RUN: %clang -target i386-unknown-freebsd -### -c -integrated-as %s \
// RUN: -march=geode 2>&1 | FileCheck -check-prefix=TARGET %s
//
// TARGET: "-cc1as"
// TARGET: "-target-cpu" "geode"