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[AArch64] Factor out N->getOperand()s; format. NFCI.

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llvm-svn: 232458
This commit is contained in:
Ahmed Bougacha 2015-03-17 03:19:18 +00:00
parent db6558cba4
commit 1aeb2c59b4
1 changed files with 12 additions and 13 deletions
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25
lib/Target/AArch64/AArch64ISelLowering.cpp
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@ -7176,21 +7176,21 @@ static SDValue performBitcastCombine(SDNode *N,
static SDValue performConcatVectorsCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
SDLoc dl(N);
EVT VT = N->getValueType(0);
SDValue N0 = N->getOperand(0), N1 = N->getOperand(1);
// Wait 'til after everything is legalized to try this. That way we have
// legal vector types and such.
if (DCI.isBeforeLegalizeOps())
return SDValue();
SDLoc dl(N);
EVT VT = N->getValueType(0);
// If we see a (concat_vectors (v1x64 A), (v1x64 A)) it's really a vector
// splat. The indexed instructions are going to be expecting a DUPLANE64, so
// canonicalise to that.
if (N->getOperand(0) == N->getOperand(1) && VT.getVectorNumElements() == 2) {
if (N0 == N1 && VT.getVectorNumElements() == 2) {
assert(VT.getVectorElementType().getSizeInBits() == 64);
return DAG.getNode(AArch64ISD::DUPLANE64, dl, VT,
WidenVector(N->getOperand(0), DAG),
return DAG.getNode(AArch64ISD::DUPLANE64, dl, VT, WidenVector(N0, DAG),
DAG.getConstant(0, MVT::i64));
}
@ -7203,10 +7203,9 @@ static SDValue performConcatVectorsCombine(SDNode *N,
// becomes
// (bitconvert (concat_vectors (v4i16 (bitconvert LHS)), RHS))
SDValue Op1 = N->getOperand(1);
if (Op1->getOpcode() != ISD::BITCAST)
if (N1->getOpcode() != ISD::BITCAST)
return SDValue();
SDValue RHS = Op1->getOperand(0);
SDValue RHS = N1->getOperand(0);
MVT RHSTy = RHS.getValueType().getSimpleVT();
// If the RHS is not a vector, this is not the pattern we're looking for.
if (!RHSTy.isVector())
@ -7216,10 +7215,10 @@ static SDValue performConcatVectorsCombine(SDNode *N,
MVT ConcatTy = MVT::getVectorVT(RHSTy.getVectorElementType(),
RHSTy.getVectorNumElements() * 2);
return DAG.getNode(
ISD::BITCAST, dl, VT,
DAG.getNode(ISD::CONCAT_VECTORS, dl, ConcatTy,
DAG.getNode(ISD::BITCAST, dl, RHSTy, N->getOperand(0)), RHS));
return DAG.getNode(ISD::BITCAST, dl, VT,
DAG.getNode(ISD::CONCAT_VECTORS, dl, ConcatTy,
DAG.getNode(ISD::BITCAST, dl, RHSTy, N0),
RHS));
}
static SDValue tryCombineFixedPointConvert(SDNode *N,