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Re-apply changes that were backed out and fix a naughty typo.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32442 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-12-11 19:27:14 +00:00
parent 2381f6f6c6
commit 13acce3ef0
1 changed files with 15 additions and 10 deletions
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25
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1547,7 +1547,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
if (Tmp2.getValueType() != MVT::Vector) {
SDOperand Lo, Hi;
ExpandOp(Tmp2, Lo, Hi);
Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Tmp3, Hi, Tmp3);
if (Hi.Val)
Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Tmp3, Hi,Tmp3);
else
Result = DAG.getNode(ISD::RET, MVT::Other, Tmp1, Lo, Tmp3);
Result = LegalizeOp(Result);
} else {
SDNode *InVal = Tmp2.Val;
@ -1609,8 +1612,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
ExpandOp(Node->getOperand(i), Lo, Hi);
NewValues.push_back(Lo);
NewValues.push_back(Node->getOperand(i+1));
NewValues.push_back(Hi);
NewValues.push_back(Node->getOperand(i+1));
if (Hi.Val) {
NewValues.push_back(Hi);
NewValues.push_back(Node->getOperand(i+1));
}
break;
}
case Promote:
@ -4567,18 +4572,16 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
Tmp = TLI.LowerOperation(DAG.getNode(ISD::BIT_CONVERT, VT, Tmp), DAG);
}
MVT::ValueType NVT = Node->getValueType(0);
// f32 / f64 must be expanded to i32 / i64.
if (NVT == MVT::f32 || NVT == MVT::f64) {
Lo = DAG.getNode(ISD::BIT_CONVERT, TLI.getTypeToTransformTo(NVT),
Node->getOperand(0));
Hi = DAG.getConstant(0, TLI.getTypeToTransformTo(NVT));
if (VT == MVT::f32 || VT == MVT::f64) {
Lo = DAG.getNode(ISD::BIT_CONVERT, NVT, Node->getOperand(0));
Hi = SDOperand();
break;
}
// Turn this into a load/store pair by default.
if (Tmp.Val == 0)
Tmp = ExpandBIT_CONVERT(NVT, Node->getOperand(0));
Tmp = ExpandBIT_CONVERT(VT, Node->getOperand(0));
ExpandOp(Tmp, Lo, Hi);
break;
@ -4875,7 +4878,9 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
// is a type that requires multi-step expansion.
if (getTypeAction(NVT) != Expand && NVT != MVT::isVoid) {
Lo = LegalizeOp(Lo);
Hi = LegalizeOp(Hi);
if (Hi.Val)
// Don't legalize the high part if it is expanded to a single node.
Hi = LegalizeOp(Hi);
}
// Remember in a map if the values will be reused later.