4354   return isNullConstant(Elt) || isNullFPConstant(Elt);  in isZeroNode()
12270         isa<ConstantSDNode>(CondElt) ? i + (isNullConstant(CondElt) ? Size : 0)  in lowerVSELECTtoVectorShuffle()
12337     if (isNullConstant(Op.getOperand(1)))  in LowerEXTRACT_VECTOR_ELT_SSE4()
12360          isNullConstant(Op.getOperand(1))) &&  in LowerEXTRACT_VECTOR_ELT_SSE4()
14861   if (isNullConstant(Op1))  in EmitCmp()
15587       isNullConstant(Op1) &&  in LowerSETCC()
15601   if ((isOneConstant(Op1) || isNullConstant(Op1)) &&  in LowerSETCC()
15608       bool Invert = (CC == ISD::SETNE) ^ isNullConstant(Op1);  in LowerSETCC()
15629     if (!isNullConstant(Op1)) {  in LowerSETCC()
15833       isNullConstant(Cond.getOperand(1).getOperand(1))) {  in LowerSELECT()
15846       if (isNullConstant(Y) &&  in LowerSELECT()
15870       if (!isNullConstant(Op2))  in LowerSELECT()
15968         (isNullConstant(Op1) || isNullConstant(Op2))) {  in LowerSELECT()
16543         isNullConstant(Cond.getOperand(1)) &&  in LowerBRCOND()
26262       isNullConstant(N0.getOperand(1))) {  in combineBitcast()
27139     if (!isNullConstant(Cond->getOperand(1)))  in checkBoolTestAndOrSetCCCombine()
28933   bool LoadFirstElt = !isNullConstant(MaskBV->getOperand(0));  in combineMaskedLoadConstantMask()
28934   bool LoadLastElt = !isNullConstant(MaskBV->getOperand(NumElts - 1));  in combineMaskedLoadConstantMask()
30297     if (isNullConstant(LHS.getOperand(0)) && LHS.hasOneUse()) {  in combineSetCC()
30304     if (isNullConstant(RHS.getOperand(0)) && RHS.hasOneUse()) {  in combineSetCC()
30876     if (isNullConstant(ExtractedV.getOperand(1))) {  in combineVZext()