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Fix off-by-one error when encoding the stack size for a frameless stack. 

llvm-svn: 146029
This commit is contained in:
Bill Wendling 2011-12-07 07:49:49 +00:00
parent 2493e92530
commit 3c86459997
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/Target/X86/X86FrameLowering.cpp
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@ -561,7 +561,7 @@ uint32_t X86FrameLowering::getCompactUnwindEncoding(MachineFunction &MF) const {
CompactUnwindEncoding |= (StackAdjust & 0xFF) << 16; CompactUnwindEncoding |= (StackAdjust & 0xFF) << 16;
CompactUnwindEncoding |= RegEnc & 0x7FFF; CompactUnwindEncoding |= RegEnc & 0x7FFF;
} else { } else {
uint32_t TotalStackSize = StackAdjust + StackSize; uint32_t TotalStackSize = StackAdjust + StackSize + 1;
if ((TotalStackSize & 0xFF) == TotalStackSize) { if ((TotalStackSize & 0xFF) == TotalStackSize) {
// Frameless stack with a small stack size. // Frameless stack with a small stack size.
CompactUnwindEncoding |= 0x02000000; CompactUnwindEncoding |= 0x02000000;