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Encode the total stack if there isn't a frame.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-12-06 21:34:01 +00:00
parent 57a3cd2f32
commit 581ac2723c
1 changed files with 3 additions and 2 deletions
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5
lib/Target/X86/X86FrameLowering.cpp
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@ -564,12 +564,13 @@ uint32_t X86FrameLowering::getCompactUnwindEncoding(MachineFunction &MF) const {
CompactUnwindEncoding |= (StackAdjust & 0xFF) << 16;
CompactUnwindEncoding |= RegEnc & 0x7FFF;
} else {
if ((StackSize & 0xFF) == StackSize) {
uint32_t TotalStackSize = StackAdjust + StackSize;
if ((TotalStackSize & 0xFF) == TotalStackSize) {
// Frameless stack with a small stack size.
CompactUnwindEncoding |= 0x02000000;
// Encode the stack size.
CompactUnwindEncoding |= (StackSize & 0xFF) << 16;
CompactUnwindEncoding |= (TotalStackSize & 0xFF) << 16;
} else {
if ((StackAdjust & 0x7) != StackAdjust)
// The extra stack adjustments are too big for us to handle.