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Implement -disable-non-leaf-fp-elim which disable frame pointer elimination

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optimization for non-leaf functions. This will be hooked up to gcc's
-momit-leaf-frame-pointer option. rdar://7886181


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101984 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-04-21 03:18:23 +00:00
parent 5528e7bcb1
commit e566763b19
15 changed files with 90 additions and 13 deletions
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2
lib/Target/PowerPC/PPCISelLowering.cpp
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@@ -5531,7 +5531,7 @@ SDValue PPCTargetLowering::LowerFRAMEADDR(SDValue Op,
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
bool is31 = (NoFramePointerElim || MFI->hasVarSizedObjects())
bool is31 = (DisableFramePointerElim(MF) || MFI->hasVarSizedObjects())
&& MFI->getStackSize();
if (isPPC64)