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Fix a bug while generating target specific VPERMIL masks: skip
undef mask elements. This fixes PR10529. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136450 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3488,8 +3488,12 @@ static unsigned getShuffleVPERMILPSImmediate(SDNode *N) {
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int NumLanes = VT.getSizeInBits()/128;
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unsigned Mask = 0;
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for (int i = 0; i < NumElts/NumLanes /* lane size */; ++i)
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Mask |= SVOp->getMaskElt(i) << (i*2);
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for (int i = 0; i < NumElts/NumLanes /* lane size */; ++i) {
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int MaskElt = SVOp->getMaskElt(i);
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if (MaskElt < 0)
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continue;
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Mask |= MaskElt << (i*2);
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}
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return Mask;
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}
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@ -3506,8 +3510,12 @@ static unsigned getShuffleVPERMILPDImmediate(SDNode *N) {
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unsigned Mask = 0;
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int LaneSize = NumElts/NumLanes;
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for (int l = 0; l < NumLanes; ++l)
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for (int i = l*LaneSize; i < LaneSize*(l+1); ++i)
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Mask |= (SVOp->getMaskElt(i)-l*LaneSize) << i;
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for (int i = l*LaneSize; i < LaneSize*(l+1); ++i) {
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int MaskElt = SVOp->getMaskElt(i);
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if (MaskElt < 0)
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continue;
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Mask |= (MaskElt-l*LaneSize) << i;
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}
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return Mask;
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}
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