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Next bit of PPC ByVal handling; call-site code seems

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correct now.

llvm-svn: 47978
This commit is contained in:
Dale Johannesen 2008-03-05 23:31:27 +00:00
parent b66feb845f
commit 6bcc9808db
1 changed files with 11 additions and 3 deletions
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14
lib/Target/PowerPC/PPCISelLowering.cpp
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@ -1583,7 +1583,7 @@ CreateCopyOfByValArgument(SDOperand Src, SDOperand Dst, SDOperand Chain,
((Flags & ISD::ParamFlags::ByValAlign) >> ISD::ParamFlags::ByValAlignOffs);
SDOperand AlignNode = DAG.getConstant(Align, MVT::i32);
SDOperand SizeNode = DAG.getConstant(Size, MVT::i32);
SDOperand AlwaysInline = DAG.getConstant(1, MVT::i32);
SDOperand AlwaysInline = DAG.getConstant(0, MVT::i32);
return DAG.getMemcpy(Chain, Dst, Src, SizeNode, AlignNode, AlwaysInline);
}
@ -1633,6 +1633,7 @@ SDOperand PPCTargetLowering::LowerCALL(SDOperand Op, SelectionDAG &DAG,
// These operations are automatically eliminated by the prolog/epilog pass
Chain = DAG.getCALLSEQ_START(Chain,
DAG.getConstant(NumBytes, PtrVT));
SDOperand CallSeqStart = Chain;
// Set up a copy of the stack pointer for use loading and storing any
// arguments that may not fit in the registers available for argument
@ -1713,13 +1714,20 @@ SDOperand PPCTargetLowering::LowerCALL(SDOperand Op, SelectionDAG &DAG,
SDOperand AddArg = DAG.getNode(ISD::ADD, PtrVT, Arg, Const);
if (GPR_idx != NumGPRs) {
SDOperand Load = DAG.getLoad(PtrVT, Chain, AddArg, NULL, 0);
MemOpChains.push_back(Load.getValue(1));
RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
if (isMachoABI)
ArgOffset += PtrByteSize;
} else {
SDOperand AddPtr = DAG.getNode(ISD::ADD, PtrVT, PtrOff, Const);
MemOpChains.push_back(CreateCopyOfByValArgument(AddArg, AddPtr,
Chain, Flags, DAG, Size - j));
SDOperand MemcpyCall = CreateCopyOfByValArgument(AddArg, AddPtr,
CallSeqStart.Val->getOperand(0),
Flags, DAG, Size - j);
// This must go outside the CALLSEQ_START..END.
SDOperand NewCallSeqStart = DAG.getCALLSEQ_START(MemcpyCall,
CallSeqStart.Val->getOperand(1));
DAG.ReplaceAllUsesWith(CallSeqStart.Val, NewCallSeqStart.Val);
CallSeqStart = NewCallSeqStart;
ArgOffset += ((Size - j + 3)/4)*4;
}
}