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restore a more restricted select

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24668 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-12-12 17:43:52 +00:00
parent a188894d67
commit 361f45a557
1 changed files with 32 additions and 0 deletions
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32
lib/Target/Alpha/AlphaISelDAGToDAG.cpp
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@ -401,6 +401,38 @@ SDOperand AlphaDAGToDAGISel::Select(SDOperand Op) {
}
break;
case ISD::SELECT:
if (MVT::isFloatingPoint(N->getValueType(0)) &&
(N->getOperand(0).getOpcode() != ISD::SETCC ||
!MVT::isFloatingPoint(N->getOperand(0).getOperand(1).getValueType()))) {
//This should be the condition not covered by the Patterns
//FIXME: Don't have SelectCode die, but rather return something testable
// so that things like this can be caught in fall though code
//move int to fp
bool isDouble = N->getValueType(0) == MVT::f64;
SDOperand LD,
cond = Select(N->getOperand(0)),
TV = Select(N->getOperand(1)),
FV = Select(N->getOperand(2));
if (AlphaLowering.hasITOF()) {
LD = CurDAG->getNode(AlphaISD::ITOFT_, MVT::f64, cond);
} else {
int FrameIdx =
CurDAG->getMachineFunction().getFrameInfo()->CreateStackObject(8, 8);
SDOperand FI = CurDAG->getFrameIndex(FrameIdx, MVT::i64);
SDOperand ST = CurDAG->getTargetNode(Alpha::STQ, MVT::Other,
cond, FI, CurDAG->getRegister(Alpha::R31, MVT::i64));
LD = CurDAG->getTargetNode(Alpha::LDT, MVT::f64, FI,
CurDAG->getRegister(Alpha::R31, MVT::i64),
ST);
}
SDOperand FP = CurDAG->getTargetNode(isDouble?Alpha::FCMOVEQT:Alpha::FCMOVEQS,
MVT::f64, FV, TV, LD);
return FP;
}
break;
}
return SelectCode(Op);