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[DAGCombine] Remove repeated variables. NFCI.

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llvm-svn: 359915
This commit is contained in:
Simon Pilgrim 2019-05-03 18:20:28 +00:00
parent c2e7102241
commit 9bba12d9eb
1 changed files with 3 additions and 8 deletions
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11
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -3817,7 +3817,6 @@ SDValue DAGCombiner::visitMULHU(SDNode *N) {
// fold (mulhu x, (1 << c)) -> x >> (bitwidth - c)
if (isConstantOrConstantVector(N1, /*NoOpaques*/ true) &&
DAG.isKnownToBeAPowerOfTwo(N1) && hasOperation(ISD::SRL, VT)) {
SDLoc DL(N);
unsigned NumEltBits = VT.getScalarSizeInBits();
SDValue LogBase2 = BuildLogBase2(N1, DL);
SDValue SRLAmt = DAG.getNode(
@ -8293,11 +8292,10 @@ SDValue DAGCombiner::visitVSELECT(SDNode *N) {
// This is OK if we don't care about what happens if either operand is a
// NaN.
//
if (N0.hasOneUse() && isLegalToCombineMinNumMaxNum(
DAG, N0.getOperand(0), N0.getOperand(1), TLI)) {
ISD::CondCode CC = cast<CondCodeSDNode>(N0.getOperand(2))->get();
if (N0.hasOneUse() && isLegalToCombineMinNumMaxNum(DAG, N0.getOperand(0),
N0.getOperand(1), TLI)) {
if (SDValue FMinMax = combineMinNumMaxNum(
DL, VT, N0.getOperand(0), N0.getOperand(1), N1, N2, CC, TLI, DAG))
DL, VT, N0.getOperand(0), N0.getOperand(1), N1, N2, CC, TLI, DAG))
return FMinMax;
}
@ -10078,7 +10076,6 @@ SDValue DAGCombiner::visitTRUNCATE(SDNode *N) {
// trunc (select c, a, b) -> select c, (trunc a), (trunc b)
if (N0.getOpcode() == ISD::SELECT && N0.hasOneUse()) {
EVT SrcVT = N0.getValueType();
if ((!LegalOperations || TLI.isOperationLegal(ISD::SELECT, SrcVT)) &&
TLI.isTruncateFree(SrcVT, VT)) {
SDLoc SL(N0);
@ -19485,7 +19482,6 @@ SDValue DAGCombiner::BuildReciprocalEstimate(SDValue Op, SDNodeFlags Flags) {
AddToWorklist(Est.getNode());
if (Iterations) {
EVT VT = Op.getValueType();
SDLoc DL(Op);
SDValue FPOne = DAG.getConstantFP(1.0, DL, VT);
@ -19641,7 +19637,6 @@ SDValue DAGCombiner::buildSqrtEstimateImpl(SDValue Op, SDNodeFlags Flags,
if (!Reciprocal) {
// The estimate is now completely wrong if the input was exactly 0.0 or
// possibly a denormal. Force the answer to 0.0 for those cases.
EVT VT = Op.getValueType();
SDLoc DL(Op);
EVT CCVT = getSetCCResultType(VT);
ISD::NodeType SelOpcode = VT.isVector() ? ISD::VSELECT : ISD::SELECT;