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Emit the copies out of call return registers *after* the ISD::CALLSEQ_END

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node, fixing fastcc and the case where a function has a frame pointer due
to dynamic allocas.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25580 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-24 05:17:12 +00:00
parent 1695483505
commit af63bb03c5
2 changed files with 23 additions and 7 deletions
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28
lib/Target/X86/X86ISelLowering.cpp
View File

@ -521,6 +521,17 @@ X86TargetLowering::LowerCCCCallTo(SDOperand Chain, const Type *RetTy,
Chain = DAG.getNode(X86ISD::CALL, NodeTys, Ops);
SDOperand InFlag = Chain.getValue(1);
NodeTys.clear();
NodeTys.push_back(MVT::Other); // Returns a chain
NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
Ops.clear();
Ops.push_back(Chain);
Ops.push_back(DAG.getConstant(NumBytes, getPointerTy()));
Ops.push_back(DAG.getConstant(0, getPointerTy()));
Ops.push_back(InFlag);
Chain = DAG.getNode(ISD::CALLSEQ_END, NodeTys, Ops);
InFlag = Chain.getValue(1);
SDOperand RetVal;
if (RetTyVT != MVT::isVoid) {
switch (RetTyVT) {
@ -591,9 +602,6 @@ X86TargetLowering::LowerCCCCallTo(SDOperand Chain, const Type *RetTy,
}
}
Chain = DAG.getNode(ISD::CALLSEQ_END, MVT::Other, Chain,
DAG.getConstant(NumBytes, getPointerTy()),
DAG.getConstant(0, getPointerTy()));
return std::make_pair(RetVal, Chain);
} else {
std::vector<SDOperand> Ops;
@ -1049,6 +1057,17 @@ X86TargetLowering::LowerFastCCCallTo(SDOperand Chain, const Type *RetTy,
Chain = DAG.getNode(X86ISD::CALL, NodeTys, Ops);
InFlag = Chain.getValue(1);
NodeTys.clear();
NodeTys.push_back(MVT::Other); // Returns a chain
NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
Ops.clear();
Ops.push_back(Chain);
Ops.push_back(DAG.getConstant(ArgOffset, getPointerTy()));
Ops.push_back(DAG.getConstant(ArgOffset, getPointerTy()));
Ops.push_back(InFlag);
Chain = DAG.getNode(ISD::CALLSEQ_END, NodeTys, Ops);
InFlag = Chain.getValue(1);
SDOperand RetVal;
if (RetTyVT != MVT::isVoid) {
switch (RetTyVT) {
@ -1119,9 +1138,6 @@ X86TargetLowering::LowerFastCCCallTo(SDOperand Chain, const Type *RetTy,
}
}
Chain = DAG.getNode(ISD::CALLSEQ_END, MVT::Other, Chain,
DAG.getConstant(ArgOffset, getPointerTy()),
DAG.getConstant(ArgOffset, getPointerTy()));
return std::make_pair(RetVal, Chain);
} else {
std::vector<SDOperand> Ops;

2
lib/Target/X86/X86InstrInfo.td
View File

@ -88,7 +88,7 @@ def X86callseq_start :
[SDNPHasChain]>;
def X86callseq_end :
SDNode<"ISD::CALLSEQ_END", SDT_X86CallSeqEnd,
[SDNPHasChain]>;
[SDNPHasChain, SDNPInFlag, SDNPOutFlag]>;
def X86call : SDNode<"X86ISD::CALL", SDT_X86Call,
[SDNPHasChain, SDNPOutFlag, SDNPOptInFlag]>;