2860   return Op.getOpcode() == ISD::SUB && isNullConstant(Op.getOperand(0)) &&  in isCMN()
2915   } else if (isNullConstant(RHS) && !isUnsignedIntSetCC(CC)) {  in emitComparison()
3007     if (isNullConstant(SubOp0) && (CC == ISD::SETEQ || CC == ISD::SETNE)) {  in emitConditionalComparison()
8151       if (isNullConstant(TVal.getOperand(0))) {  in LowerSELECT_CC()
9186     if (!isNullConstant(Op))  in LowerAsmOperandForConstraint()
14770   if (!isNullConstant(CSel0.getOperand(0)) ||  in performANDORCSELCombine()
14772       !isNullConstant(CSel1.getOperand(0)) ||  in performANDORCSELCombine()
15054       !isNullConstant(N->getOperand(1)))  in performFirstTrueTestVectorCombine()
15795   return Op.getOpcode() == ISD::SUB && isNullConstant(Op.getOperand(0));  in isNegatedInteger()
15905   if (isOneConstant(OpLHS) && isNullConstant(OpRHS))  in getCSETCondCode()
15907   if (isNullConstant(OpLHS) && isOneConstant(OpRHS))  in getCSETCondCode()
15924     if (!isNullConstant(CmpOp.getOperand(0)))  in foldOverflowCheck()
15944   if (!isNullConstant(RHS))  in foldADCToCINC()
17063     if (!isNullConstant(EltVal) && !isNullFPConstant(EltVal))  in replaceZeroVectorStore()
18225   if (isNullConstant(LHS))  in performBRCONDCombine()
18228   if (!isNullConstant(RHS))  in performBRCONDCombine()
18270   if (!isNullConstant(Zero) || !isNullConstant(SUBS.getOperand(1)))  in foldCSELofCTTZ()
18369       isNullConstant(LHS->getOperand(0)) && isOneConstant(LHS->getOperand(1)) &&  in performSETCCCombine()
18385   if (Cond == ISD::SETNE && isNullConstant(RHS) &&  in performSETCCCombine()
18401       (Cond == ISD::SETEQ || Cond == ISD::SETNE) && isNullConstant(RHS) &&  in performSETCCCombine()
19341   if (!isNullConstant(InsertIdx))  in removeRedundantInsertVectorElt()
19354   if (!isNullConstant(ExtractIdx))  in removeRedundantInsertVectorElt()