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Use the new convertFromAPInt instead of convertFromZeroExtendedInteger,

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which allows more of the surrounding arithmetic to be done with APInt
instead of uint64_t.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47745 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-02-29 01:44:25 +00:00
parent 37a9ca5bc5
commit c7773bf90e
1 changed files with 3 additions and 5 deletions
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8
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@@ -3754,12 +3754,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
SDOperand True, False;
MVT::ValueType VT = Node->getOperand(0).getValueType();
MVT::ValueType NVT = Node->getValueType(0);
unsigned ShiftAmt = MVT::getSizeInBits(NVT)-1;
const uint64_t zero[] = {0, 0};
APFloat apf = APFloat(APInt(MVT::getSizeInBits(VT), 2, zero));
uint64_t x = 1ULL << ShiftAmt;
(void)apf.convertFromZeroExtendedInteger
(&x, MVT::getSizeInBits(NVT), false, APFloat::rmNearestTiesToEven);
APInt x = APInt::getSignBit(MVT::getSizeInBits(NVT));
(void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven);
Tmp2 = DAG.getConstantFP(apf, VT);
Tmp3 = DAG.getSetCC(TLI.getSetCCResultTy(),
Node->getOperand(0), Tmp2, ISD::SETLT);
@@ -3768,7 +3766,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
DAG.getNode(ISD::FSUB, VT, Node->getOperand(0),
Tmp2));
False = DAG.getNode(ISD::XOR, NVT, False,
DAG.getConstant(1ULL << ShiftAmt, NVT));
DAG.getConstant(x, NVT));
Result = DAG.getNode(ISD::SELECT, NVT, Tmp3, True, False);
break;
} else {