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Revert r138826 until PR10834 can be fixed.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139018 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-09-02 18:15:04 +00:00
parent f0851e5d95
commit d199aa012b
1 changed files with 8 additions and 1 deletions
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9
lib/Target/X86/X86FrameLowering.cpp
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@ -35,6 +35,13 @@ using namespace llvm;
// FIXME: completely move here.
extern cl::opt<bool> ForceStackAlign;
// FIXME: Remove once linker support is available. The feature exists only on
// Darwin at the moment.
static cl::opt<bool>
GenerateCompactUnwind("gen-compact-unwind",
cl::desc("Generate compact unwind encoding"),
cl::Hidden);
bool X86FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const {
return !MF.getFrameInfo()->hasVarSizedObjects();
}
@ -901,7 +908,7 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF) const {
}
// Darwin 10.7 and greater has support for compact unwind encoding.
if (STI.getTargetTriple().isMacOSX() &&
if (GenerateCompactUnwind && STI.getTargetTriple().isMacOSX() &&
!STI.getTargetTriple().isMacOSXVersionLT(10, 7))
MMI.setCompactUnwindEncoding(getCompactUnwindEncoding(MF));
}