Transforms/InstCombine/InstCombineSimplifyDemanded.cpp

1033     uint64_t LHSVWidth =
1035     APInt LeftDemanded(LHSVWidth, 0), RightDemanded(LHSVWidth, 0);
1040           assert(MaskVal < LHSVWidth * 2 &&
1042           if (MaskVal < LHSVWidth)
1045             RightDemanded.setBit(MaskVal - LHSVWidth);
1050     APInt UndefElts4(LHSVWidth, 0);
1055     APInt UndefElts3(LHSVWidth, 0);
1068       } else if (MaskVal < LHSVWidth) {
1074         if (UndefElts3[MaskVal - LHSVWidth]) {