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ByVal frame object size should be that of the byval argument, not the size of the type which is just a pointer. This is not known to break stuff but is wrong nevertheless.

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llvm-svn: 95163
This commit is contained in:
Evan Cheng 2010-02-02 23:58:13 +00:00
parent 78f57ac8dc
commit 1d121ec4d1
1 changed files with 11 additions and 7 deletions
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18
lib/Target/X86/X86ISelLowering.cpp
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@ -1471,13 +1471,17 @@ X86TargetLowering::LowerMemArgument(SDValue Chain,
// changed with more analysis.
// In case of tail call optimization mark all arguments mutable. Since they
// could be overwritten by lowering of arguments in case of a tail call.
int FI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
VA.getLocMemOffset(), isImmutable, false);
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
if (Flags.isByVal())
return FIN;
return DAG.getLoad(ValVT, dl, Chain, FIN,
PseudoSourceValue::getFixedStack(FI), 0);
if (Flags.isByVal()) {
int FI = MFI->CreateFixedObject(Flags.getByValSize(),
VA.getLocMemOffset(), isImmutable, false);
return DAG.getFrameIndex(FI, getPointerTy());
} else {
int FI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
VA.getLocMemOffset(), isImmutable, false);
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
return DAG.getLoad(ValVT, dl, Chain, FIN,
PseudoSourceValue::getFixedStack(FI), 0);
}
}
SDValue