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[X86][SSE] Pulled common variables to top of matchUnaryPermuteVectorShuffle. NFCI.
llvm-svn: 306847
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@ -27107,6 +27107,9 @@ static bool matchUnaryPermuteVectorShuffle(MVT MaskVT, ArrayRef<int> Mask,
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unsigned &Shuffle, MVT &ShuffleVT,
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unsigned &PermuteImm) {
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unsigned NumMaskElts = Mask.size();
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unsigned InputSizeInBits = MaskVT.getSizeInBits();
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unsigned MaskScalarSizeInBits = InputSizeInBits / NumMaskElts;
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MVT MaskEltVT = MVT::getIntegerVT(MaskScalarSizeInBits);
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bool ContainsZeros = false;
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APInt Zeroable(NumMaskElts, false);
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@ -27122,7 +27125,7 @@ static bool matchUnaryPermuteVectorShuffle(MVT MaskVT, ArrayRef<int> Mask,
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if (AllowIntDomain && ((MaskVT.is128BitVector() && Subtarget.hasSSE2()) ||
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(MaskVT.is256BitVector() && Subtarget.hasAVX2()))) {
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int ShiftAmt = matchVectorShuffleAsShift(ShuffleVT, Shuffle,
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MaskVT.getScalarSizeInBits(), Mask,
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MaskScalarSizeInBits, Mask,
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0, Zeroable, Subtarget);
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if (0 < ShiftAmt) {
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PermuteImm = (unsigned)ShiftAmt;
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@ -27138,10 +27141,6 @@ static bool matchUnaryPermuteVectorShuffle(MVT MaskVT, ArrayRef<int> Mask,
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return SM_SentinelUndef <= M && M < (int)NumMaskElts;
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}) && "Expected unary shuffle");
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unsigned InputSizeInBits = MaskVT.getSizeInBits();
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unsigned MaskScalarSizeInBits = InputSizeInBits / Mask.size();
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MVT MaskEltVT = MVT::getIntegerVT(MaskScalarSizeInBits);
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// Handle PSHUFLW/PSHUFHW repeated patterns.
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if (MaskScalarSizeInBits == 16) {
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SmallVector<int, 4> RepeatedMask;
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