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Disable CFI if not using the integrated assembler. We should probably do this only for 

OS X, but it is probably not all that important.

llvm-svn: 130697
This commit is contained in:
Rafael Espindola 2011-05-02 17:43:32 +00:00
parent eb39741c0b
commit 4cfa7971e9
1 changed files with 21 additions and 5 deletions
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26
clang/lib/Driver/Tools.cpp
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@ -905,6 +905,25 @@ static void addExceptionArgs(const ArgList &Args, types::ID InputType,
CmdArgs.push_back("-fexceptions");
}
static bool ShouldDisableCFI(const ArgList &Args,
const ToolChain &TC) {
// FIXME: Duplicated code with ToolChains.cpp
// FIXME: This doesn't belong here, but ideally we will support static soon
// anyway.
bool HasStatic = (Args.hasArg(options::OPT_mkernel) ||
Args.hasArg(options::OPT_static) ||
Args.hasArg(options::OPT_fapple_kext));
bool IsIADefault = TC.IsIntegratedAssemblerDefault() && !HasStatic;
bool UseIntegratedAs = Args.hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIADefault);
bool UseCFI = Args.hasFlag(options::OPT_fdwarf2_cfi_asm,
options::OPT_fno_dwarf2_cfi_asm,
UseIntegratedAs);
return !UseCFI;
}
void Clang::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
@ -1375,11 +1394,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-fno-gnu-keywords");
}
if (Arg *A = Args.getLastArg(options::OPT_fdwarf2_cfi_asm,
options::OPT_fno_dwarf2_cfi_asm)) {
if (A->getOption().matches(options::OPT_fno_dwarf2_cfi_asm))
CmdArgs.push_back("-fno-dwarf2-cfi-asm");
}
if (ShouldDisableCFI(Args, getToolChain()))
CmdArgs.push_back("-fno-dwarf2-cfi-asm");
if (Arg *A = Args.getLastArg(options::OPT_ftemplate_depth_)) {
CmdArgs.push_back("-ftemplate-depth");