6024   return ((Val == SM_SentinelUndef) || (Val == CmpVal));  in isUndefOrEqual()
6031     return (M == SM_SentinelUndef) || (M == CmpVal);  in isUndefOrEqual()
6037   return ((Val == SM_SentinelUndef) || (Val == SM_SentinelZero));  in isUndefOrZero()
6044                       [](int M) { return M == SM_SentinelUndef; });  in isUndefInRange()
6079     return M == SM_SentinelZero || M == SM_SentinelUndef;  in isAnyZeroOrUndef()
6086   return (Val == SM_SentinelUndef) || isInRange(Val, Low, Hi);  in isUndefOrInRange()
6156     if (M0 == SM_SentinelUndef && M1 == SM_SentinelUndef) {  in canWidenShuffleElements()
6157       WidenedMask[i / 2] = SM_SentinelUndef;  in canWidenShuffleElements()
6163     if (M0 == SM_SentinelUndef && M1 >= 0 && (M1 % 2) == 1) {  in canWidenShuffleElements()
6167     if (M1 == SM_SentinelUndef && M0 >= 0 && (M0 % 2) == 0) {  in canWidenShuffleElements()
6174       if ((M0 == SM_SentinelZero || M0 == SM_SentinelUndef) &&  in canWidenShuffleElements()
6175           (M1 == SM_SentinelZero || M1 == SM_SentinelUndef)) {  in canWidenShuffleElements()
6184     if (M0 != SM_SentinelUndef && (M0 % 2) == 0 && (M0 + 1) == M1) {  in canWidenShuffleElements()
6208       if (Mask[i] != SM_SentinelUndef && Zeroable[i])  in canWidenShuffleElements()
8062       if (SM_SentinelUndef == M)  in getTargetShuffleAndZeroables()
8134       Mask[i] = SM_SentinelUndef;  in resolveTargetShuffleFromZeroables()
8149     if (SM_SentinelUndef == M)  in resolveZeroablesFromTargetShuffle()
8169   Mask.resize(NumElts, SM_SentinelUndef);  in createShuffleMaskFromVSELECT()
8415       Mask.append(NumSizeInBytes, SM_SentinelUndef);  in getFauxShuffleMask()
8614           M = SM_SentinelUndef;  in resolveTargetShuffleInputsAndMask()
8748     if (Elt == SM_SentinelUndef)  in getShuffleScalarElt()
11426     Mask.append(NumElems - Mask.size(), SM_SentinelUndef);  in LowerBUILD_VECTOR()
11691     assert(Mask[i] == SM_SentinelUndef || Mask[i] >= 0);  in isRepeatedShuffleMask()
11739   RepeatedMask.assign(LaneSize, SM_SentinelUndef);  in isRepeatedTargetShuffleMask()
11743     if (Mask[i] == SM_SentinelUndef)  in isRepeatedTargetShuffleMask()
11759     if (RepeatedMask[i % LaneSize] == SM_SentinelUndef)  in isRepeatedTargetShuffleMask()
11900     if (MaskIdx == SM_SentinelUndef || MaskIdx == ExpectedIdx)  in isTargetShuffleEquivalent()
12144     Undef1 &= (SM_SentinelUndef == M1);  in matchShuffleWithUNPCK()
12145     Undef2 &= (SM_SentinelUndef == M2);  in matchShuffleWithUNPCK()
12185           (M == SM_SentinelUndef))  in matchShuffleWithUNPCK()
12760     if (M == SM_SentinelUndef)  in matchShuffleAsBlend()
13130     SmallVector<int, 64> PermMask(NumElts, SM_SentinelUndef);  in lowerShuffleAsByteRotateAndPermute()
13382     assert((M == SM_SentinelUndef || (0 <= M && M < (2*NumElts))) &&  in matchShuffleAsElementRotate()
13762     if (M == SM_SentinelUndef)  in matchShuffleAsEXTRQ()
14897         Mask[0] == SM_SentinelUndef ? DAG.getUNDEF(MVT::v2f64) : V1,  in lowerV2F64Shuffle()
14898         Mask[1] == SM_SentinelUndef ? DAG.getUNDEF(MVT::v2f64) : V1,  in lowerV2F64Shuffle()
16786     SmallVector<int, 16> InLaneMask(NumElts, SM_SentinelUndef);  in lowerShuffleAsLanePermuteAndPermute()
16788     SmallVector<int, 16> CrossLaneMaskLarge(NumSublanes, SM_SentinelUndef);  in lowerShuffleAsLanePermuteAndPermute()
17512         SmallVector<int, 8>((unsigned)NumSubLaneElts, SM_SentinelUndef));  in lowerShuffleAsRepeatedMaskAndLanePermute()
17648     if (Mask[i] == SM_SentinelUndef || ZeroLane[i & 1])  in matchShuffleWithSHUFPD()
19081     assert((M == SM_SentinelUndef || (0 <= M && M < NumElts)) &&  in lower1BitShuffleAsKSHIFTR()
25476     SmallVector<int, 16> HiMask(NumSrcElts, SM_SentinelUndef);  in LowerEXTEND_VECTOR_INREG()
25507     SmallVector<int, 16> Mask(InNumElts, SM_SentinelUndef);  in LowerEXTEND_VECTOR_INREG()
29983         ShuffleMask.push_back(SM_SentinelUndef);  in LowerShift()
32687       SmallVector<int, 16> ShufMask(NumElts, SM_SentinelUndef);  in ReplaceNodeResults()
37042           if (M == SM_SentinelUndef) {  in computeKnownBitsForTargetNode()
37192           if (M == SM_SentinelUndef) {  in ComputeNumSignBitsForTargetNode()
37436         if (M == SM_SentinelUndef)  in matchUnaryPermuteShuffle()
37547       V1 = (SM_SentinelUndef == Mask[0] ? DAG.getUNDEF(MVT::v4f32) : V1);  in matchBinaryShuffle()
37623       if (M == SM_SentinelUndef)  in matchBinaryShuffle()
37671           if (M == SM_SentinelUndef)  in matchBinaryShuffle()
37818           S0 = (SM_SentinelUndef == M0 ? -1 : 0);  in matchBinaryPermuteShuffle()
37819           S1 = (SM_SentinelUndef == M1 ? -1 : 1);  in matchBinaryPermuteShuffle()
37822           S0 = (SM_SentinelUndef == M0 ? -1 : M0 & 3);  in matchBinaryPermuteShuffle()
37823           S1 = (SM_SentinelUndef == M1 ? -1 : M1 & 3);  in matchBinaryPermuteShuffle()
37826           S0 = (SM_SentinelUndef == M0 ? -1 : M0 & 3);  in matchBinaryPermuteShuffle()
37827           S1 = (SM_SentinelUndef == M1 ? -1 : M1 & 3);  in matchBinaryPermuteShuffle()
38451       if (M == SM_SentinelUndef) {  in combineX86ShuffleChain()
38499       if (M == SM_SentinelUndef) {  in combineX86ShuffleChain()
38534       if (M == SM_SentinelUndef) {  in combineX86ShuffleChain()
38566       if (M == SM_SentinelUndef) {  in combineX86ShuffleChain()
38697   WideMask.append((Scale - 1) * NumMaskElts, SM_SentinelUndef);  in combineX86ShuffleChainWithExtract()
38779           if (M == SM_SentinelUndef)  in canonicalizeShuffleMaskWithHorizOp()
38805             return M == SM_SentinelUndef;  in canonicalizeShuffleMaskWithHorizOp()
38905         Lo = (WideMask128[0] == SM_SentinelUndef ? Undef : Lo);  in canonicalizeShuffleMaskWithHorizOp()
38906         Hi = (WideMask128[1] == SM_SentinelUndef ? Undef : Hi);  in canonicalizeShuffleMaskWithHorizOp()
38958     if (M == SM_SentinelUndef) {  in combineX86ShufflesConstants()
39099     OpMask.assign(NumElts, SM_SentinelUndef);  in combineX86ShufflesRecursively()
39123     OpMask.append((NumSubVecs - 1) * OpMaskSize, SM_SentinelUndef);  in combineX86ShufflesRecursively()
39209     Mask.resize(MaskWidth, SM_SentinelUndef);  in combineX86ShufflesRecursively()
39263   if (all_of(Mask, [](int Idx) { return Idx == SM_SentinelUndef; }))  in combineX86ShufflesRecursively()
39889                                         SM_SentinelUndef);  in combineTargetShuffle()
41551       OpMask[i] = SM_SentinelUndef;  in SimplifyDemandedVectorEltsForTargetNode()
41598     SmallVector<int, 64> DemandedMask(NumElts, SM_SentinelUndef);  in SimplifyDemandedVectorEltsForTargetNode()
43547           Mask[i] = SM_SentinelUndef;  in combineExtractWithShuffle()
43577   if (ExtractIdx == SM_SentinelUndef)  in combineExtractWithShuffle()
48060       SmallVector<int, 16> ShuffleMask(NumElts * Scale, SM_SentinelUndef);  in combineAnd()
49768   PostShuffleMask.append(NumElts, SM_SentinelUndef);  in isHorizontalBinOp()
54480       if (ScaledMask[SubVecIdx] == SM_SentinelUndef)  in combineEXTRACT_SUBVECTOR()