81   if (C.isNullValue())  in isSignTest()
864       isa<Constant>(RHS) && cast<Constant>(RHS)->isNullValue() &&  in foldGEPICmp()
1150   if (AP2.isNullValue())  in foldICmpShrConstConst()
1209   if (AP2.isNullValue())  in foldICmpShlConstConst()
1728   if (Shift->hasOneUse() && C1.isNullValue() && Cmp.isEquality() &&  in foldICmpAndShift()
1752   if (isICMP_NE && Cmp.getType()->isVectorTy() && C1.isNullValue() &&  in foldICmpAndConstConst()
1765   if (Cmp.isEquality() && C1.isNullValue()) {  in foldICmpAndConstConst()
1815   if (!Cmp.isSigned() && C1.isNullValue() && And->getOperand(0)->hasOneUse() &&  in foldICmpAndConstConst()
1902   if (And->hasOneUse() && C.isNullValue() && match(Y, m_APInt(C2))) {  in foldICmpAndConstant()
1953   if (!Cmp.isEquality() || !C.isNullValue() || !Or->hasOneUse())  in foldICmpOrConstant()
2004   if (Cmp.isEquality() && !MulC->isNullValue()) {  in foldICmpMulConstant()
2006     if (Mul->hasNoSignedWrap() && C.srem(*MulC).isNullValue()) {  in foldICmpMulConstant()
2011     if (Mul->hasNoUnsignedWrap() && C.urem(*MulC).isNullValue()) {  in foldICmpMulConstant()
2231       C.isNullValue())  in foldICmpShrConstant()
2319   if (C.isNullValue()) {  in foldICmpShrConstant()
2358   if (!C.isNullValue() || !match(SRem->getOperand(1), m_Power2(DivisorC)))  in foldICmpSRemConstant()
2438   if (C2->isNullValue() || C2->isOneValue() ||  in foldICmpDivConstant()
2479     if (C.isNullValue()) {       // (X / pos) op 0  in foldICmpDivConstant()
2500     if (C.isNullValue()) { // (X / neg) op 0  in foldICmpDivConstant()
2611     if (Pred == ICmpInst::ICMP_SGT && C.isNullValue())  in foldICmpSubConstant()
2615     if (Pred == ICmpInst::ICMP_SLT && C.isNullValue())  in foldICmpSubConstant()
3058     if (C.isNullValue() && BO->hasOneUse()) {  in foldICmpBinOpEqualityWithConstant()
3072     } else if (C.isNullValue()) {  in foldICmpBinOpEqualityWithConstant()
3093       } else if (C.isNullValue()) {  in foldICmpBinOpEqualityWithConstant()
3106       } else if (C.isNullValue()) {  in foldICmpBinOpEqualityWithConstant()
3135     if (C.isNullValue()) {  in foldICmpBinOpEqualityWithConstant()
3156     if (C.isNullValue() || C.isMinSignedValue())  in foldICmpEqIntrinsicWithConstant()
3194     bool IsZero = C.isNullValue();  in foldICmpEqIntrinsicWithConstant()
3204     if (C.isNullValue()) {  in foldICmpEqIntrinsicWithConstant()
3213     if (C.isNullValue()) {  in foldICmpEqIntrinsicWithConstant()
3308     if (RHSC->isNullValue() &&  in foldICmpInstWithConstantNotInt()
3333       } else if (RHSC->isNullValue()) {  in foldICmpInstWithConstantNotInt()
3382     if (RHSC->isNullValue() &&  in foldICmpInstWithConstantNotInt()
3698           (NewShAmtSplat->isNullValue() ||  in foldShiftIntoShiftInAnotherHandOfAndInICmp()
4149       if (match(BO0->getOperand(1), m_APInt(C)) && !C->isNullValue() &&  in foldICmpBinOp()