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Simplify some code by using BIT_CONVERT 

llvm-svn: 24974
This commit is contained in:
Chris Lattner 2005-12-23 00:59:59 +00:00
parent 884eb3adc3
commit f474034432
1 changed files with 10 additions and 21 deletions
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31
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -158,39 +158,28 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
if (Src.getValueType() == MVT::f32)
Src = DAG.getNode(ISD::FP_EXTEND, MVT::f64, Src);
SDOperand Tmp;
switch (Op.getValueType()) {
default: assert(0 && "Unhandled FP_TO_SINT type in custom expander!");
case MVT::i32:
Op = DAG.getNode(PPCISD::FCTIWZ, MVT::f64, Src);
Tmp = DAG.getNode(PPCISD::FCTIWZ, MVT::f64, Src);
break;
case MVT::i64:
Op = DAG.getNode(PPCISD::FCTIDZ, MVT::f64, Src);
Tmp = DAG.getNode(PPCISD::FCTIDZ, MVT::f64, Src);
break;
}
int FrameIdx =
DAG.getMachineFunction().getFrameInfo()->CreateStackObject(8, 8);
SDOperand FI = DAG.getFrameIndex(FrameIdx, MVT::i32);
SDOperand ST = DAG.getNode(ISD::STORE, MVT::Other, DAG.getEntryNode(),
Op, FI, DAG.getSrcValue(0));
if (Op.getOpcode() == PPCISD::FCTIDZ) {
Op = DAG.getLoad(MVT::i64, ST, FI, DAG.getSrcValue(0));
} else {
FI = DAG.getNode(ISD::ADD, MVT::i32, FI, DAG.getConstant(4, MVT::i32));
Op = DAG.getLoad(MVT::i32, ST, FI, DAG.getSrcValue(0));
}
return Op;
// Convert the FP value to an int value through memory.
SDOperand Bits = DAG.getNode(ISD::BIT_CONVERT, MVT::i64, Tmp);
if (Op.getValueType() == MVT::i32)
Bits = DAG.getNode(ISD::TRUNCATE, MVT::i32, Bits);
return Bits;
}
case ISD::SINT_TO_FP: {
assert(MVT::i64 == Op.getOperand(0).getValueType() &&
"Unhandled SINT_TO_FP type in custom expander!");
int FrameIdx =
DAG.getMachineFunction().getFrameInfo()->CreateStackObject(8, 8);
SDOperand FI = DAG.getFrameIndex(FrameIdx, MVT::i32);
SDOperand ST = DAG.getNode(ISD::STORE, MVT::Other, DAG.getEntryNode(),
Op.getOperand(0), FI, DAG.getSrcValue(0));
SDOperand LD = DAG.getLoad(MVT::f64, ST, FI, DAG.getSrcValue(0));
SDOperand FP = DAG.getNode(PPCISD::FCFID, MVT::f64, LD);
SDOperand Bits = DAG.getNode(ISD::BIT_CONVERT, MVT::f64, Op.getOperand(0));
SDOperand FP = DAG.getNode(PPCISD::FCFID, MVT::f64, Bits);
if (MVT::f32 == Op.getValueType())
FP = DAG.getNode(ISD::FP_ROUND, MVT::f32, FP);
return FP;