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Mark byval parameter stack objects mutable for now.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45813 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-01-10 02:24:25 +00:00
parent 0d0e1b58cb
commit e70bb59840
1 changed files with 8 additions and 7 deletions
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15
lib/Target/X86/X86ISelLowering.cpp
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@@ -1012,16 +1012,17 @@ SDOperand X86TargetLowering::LowerMemArgument(SDOperand Op, SelectionDAG &DAG,
MachineFrameInfo *MFI, MachineFrameInfo *MFI,
SDOperand Root, unsigned i) { SDOperand Root, unsigned i) {
// Create the nodes corresponding to a load from this parameter slot. // Create the nodes corresponding to a load from this parameter slot.
unsigned Flags = cast<ConstantSDNode>(Op.getOperand(3 + i))->getValue();
bool isByVal = Flags & ISD::ParamFlags::ByVal;
// FIXME: For now, all byval parameter objects are marked mutable. This
// can be changed with more analysis.
int FI = MFI->CreateFixedObject(MVT::getSizeInBits(VA.getValVT())/8, int FI = MFI->CreateFixedObject(MVT::getSizeInBits(VA.getValVT())/8,
VA.getLocMemOffset()); VA.getLocMemOffset(), !isByVal);
SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy()); SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
if (isByVal)
unsigned Flags = cast<ConstantSDNode>(Op.getOperand(3 + i))->getValue();
if (Flags & ISD::ParamFlags::ByVal)
return FIN; return FIN;
else return DAG.getLoad(VA.getValVT(), Root, FIN, NULL, 0);
return DAG.getLoad(VA.getValVT(), Root, FIN, NULL, 0);
} }
SDOperand SDOperand