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[X86][SSE] Combine EXTRACT_VECTOR_ELT with combineExtractWithShuffle before XFormVExtractWithShuffleIntoLoad
combineExtractWithShuffle can handle more complex shuffles/bitcasts than we can with the equivalent code in XFormVExtractWithShuffleIntoLoad. Mainly a compile time improvement now (combineExtractWithShuffle combines will have always failed late on inside XFormVExtractWithShuffleIntoLoad), and will let us merge combineExtractVectorElt_SSE in a future commit. llvm-svn: 317481
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@ -30485,10 +30485,10 @@ static SDValue combineExtractWithShuffle(SDNode *N, SelectionDAG &DAG,
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static SDValue combineExtractVectorElt(SDNode *N, SelectionDAG &DAG,
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TargetLowering::DAGCombinerInfo &DCI,
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const X86Subtarget &Subtarget) {
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if (SDValue NewOp = XFormVExtractWithShuffleIntoLoad(N, DAG, DCI))
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if (SDValue NewOp = combineExtractWithShuffle(N, DAG, DCI, Subtarget))
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return NewOp;
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if (SDValue NewOp = combineExtractWithShuffle(N, DAG, DCI, Subtarget))
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if (SDValue NewOp = XFormVExtractWithShuffleIntoLoad(N, DAG, DCI))
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return NewOp;
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SDValue InputVector = N->getOperand(0);
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