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[DAGCombiner] Use getBitcast helper when possible. NFCI. 

llvm-svn: 261437
This commit is contained in:
Simon Pilgrim 2016-02-20 15:05:29 +00:00
parent ff4b63739e
commit c5199aae82
1 changed files with 3 additions and 7 deletions
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10
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -7388,11 +7388,9 @@ SDValue DAGCombiner::visitBITCAST(SDNode *N) {
if (N0.getValueType() == MVT::ppcf128 && !LegalTypes) { if (N0.getValueType() == MVT::ppcf128 && !LegalTypes) {
APInt SignBit = APInt::getSignBit(VT.getSizeInBits() / 2); APInt SignBit = APInt::getSignBit(VT.getSizeInBits() / 2);
SDValue Cst = DAG.getNode(ISD::BITCAST, SDLoc(N0.getOperand(0)), VT, SDValue Cst = DAG.getBitcast(VT, N0.getOperand(0));
N0.getOperand(0));
AddToWorklist(Cst.getNode()); AddToWorklist(Cst.getNode());
SDValue X = DAG.getNode(ISD::BITCAST, SDLoc(N0.getOperand(1)), VT, SDValue X = DAG.getBitcast(VT, N0.getOperand(1));
N0.getOperand(1));
AddToWorklist(X.getNode()); AddToWorklist(X.getNode());
SDValue XorResult = DAG.getNode(ISD::XOR, SDLoc(N0), VT, Cst, X); SDValue XorResult = DAG.getNode(ISD::XOR, SDLoc(N0), VT, Cst, X);
AddToWorklist(XorResult.getNode()); AddToWorklist(XorResult.getNode());
@ -8969,9 +8967,7 @@ static SDValue FoldIntToFPToInt(SDNode *N, SelectionDAG &DAG) {
} }
if (VT.getScalarSizeInBits() < SrcVT.getScalarSizeInBits()) if (VT.getScalarSizeInBits() < SrcVT.getScalarSizeInBits())
return DAG.getNode(ISD::TRUNCATE, SDLoc(N), VT, Src); return DAG.getNode(ISD::TRUNCATE, SDLoc(N), VT, Src);
if (SrcVT == VT) return DAG.getBitcast(VT, Src);
return Src;
return DAG.getNode(ISD::BITCAST, SDLoc(N), VT, Src);
} }
return SDValue(); return SDValue();
} }