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Teach LegalizeTypes how to expand the operands of

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br_cc.  This fixes 5 "make check" failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47212 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-02-16 10:29:26 +00:00
parent 17bcde9f9b
commit 051bb7b075
2 changed files with 25 additions and 4 deletions
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9
lib/CodeGen/SelectionDAG/LegalizeTypes.h
View File

@ -238,14 +238,15 @@ private:
// Operand Expansion.
bool ExpandOperand(SDNode *N, unsigned OperandNo);
SDOperand ExpandOperand_TRUNCATE(SDNode *N);
SDOperand ExpandOperand_BIT_CONVERT(SDNode *N);
SDOperand ExpandOperand_UINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
SDOperand ExpandOperand_SINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
SDOperand ExpandOperand_BR_CC(SDNode *N);
SDOperand ExpandOperand_EXTRACT_ELEMENT(SDNode *N);
SDOperand ExpandOperand_SETCC(SDNode *N);
SDOperand ExpandOperand_SINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
SDOperand ExpandOperand_STORE(StoreSDNode *N, unsigned OpNo);
SDOperand ExpandOperand_TRUNCATE(SDNode *N);
SDOperand ExpandOperand_UINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
void ExpandSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS,
ISD::CondCode &CCCode);

20
lib/CodeGen/SelectionDAG/LegalizeTypesExpand.cpp
View File

@ -850,6 +850,8 @@ bool DAGTypeLegalizer::ExpandOperand(SDNode *N, unsigned OpNo) {
Res = ExpandOperand_UINT_TO_FP(N->getOperand(0), N->getValueType(0));
break;
case ISD::EXTRACT_ELEMENT: Res = ExpandOperand_EXTRACT_ELEMENT(N); break;
case ISD::BR_CC: Res = ExpandOperand_BR_CC(N); break;
case ISD::SETCC: Res = ExpandOperand_SETCC(N); break;
case ISD::STORE:
@ -976,6 +978,24 @@ SDOperand DAGTypeLegalizer::ExpandOperand_EXTRACT_ELEMENT(SDNode *N) {
return cast<ConstantSDNode>(N->getOperand(1))->getValue() ? Hi : Lo;
}
SDOperand DAGTypeLegalizer::ExpandOperand_BR_CC(SDNode *N) {
SDOperand NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
ExpandSetCCOperands(NewLHS, NewRHS, CCCode);
// If ExpandSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (NewRHS.Val == 0) {
NewRHS = DAG.getConstant(0, NewLHS.getValueType());
CCCode = ISD::SETNE;
}
// Update N to have the operands specified.
return DAG.UpdateNodeOperands(SDOperand(N, 0), N->getOperand(0),
DAG.getCondCode(CCCode), NewLHS, NewRHS,
N->getOperand(4));
}
SDOperand DAGTypeLegalizer::ExpandOperand_SETCC(SDNode *N) {
SDOperand NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();