46   if (CV->isNullValue()) return Constant::getNullValue(DstTy);  in BitCastConstantVector()
260     if (RHS->isNullValue())  in ExtractConstantBytes()
365   if (V->isNullValue() && !DestTy->isX86_MMXTy() && !DestTy->isX86_AMXTy() &&  in ConstantFoldCastInstruction()
391         if (!CE->getOperand(i)->isNullValue()) {  in ConstantFoldCastInstruction()
460     if (V->isNullValue())       // Is it an integral null value?  in ConstantFoldCastInstruction()
465     if (V->isNullValue())  in ConstantFoldCastInstruction()
524   if (Cond->isNullValue()) return V2;  in ConstantFoldSelectInstruction()
547         V = Cond->isNullValue() ? V2Element : V1Element;  in ConstantFoldSelectInstruction()
682   if (isa<ConstantAggregateZero>(Val) && Elt->isNullValue())  in ConstantFoldInsertElementInstruction()
736     if (Elt->isNullValue()) {  in ConstantFoldShuffleVectorInstruction()
1218       if (Instruction::isIntDivRem(Opcode) && C2Splat->isNullValue())  in ConstantFoldBinaryInstruction()
1241         if (Instruction::isIntDivRem(Opcode) && RHS->isNullValue())  in ConstantFoldBinaryInstruction()
1527       if (V2->isNullValue() && CE1->getType()->isIntOrPtrTy()) {  in evaluateICmpRelation()
1620   if (C1->isNullValue()) {  in ConstantFoldCompareInstruction()
1632   } else if (C2->isNullValue()) {  in ConstantFoldCompareInstruction()
1903         (C1->isNullValue() && !C2->isNullValue())) {  in ConstantFoldCompareInstruction()
1921   if (cast<Constant>(Idxs[0])->isNullValue()) return true;  in isInBoundsIndices()
1936     if (!cast<Constant>(Idxs[i])->isNullValue())  in isInBoundsIndices()
1967   if (Idx0->isNullValue()) {  in foldGEPOfGEP()
2055       return IdxC->isNullValue() || isa<UndefValue>(IdxC);  in ConstantFoldGetElementPtr()
2064   if (C->isNullValue()) {  in ConstantFoldGetElementPtr()
2067       if (!isa<UndefValue>(Idx) && !cast<Constant>(Idx)->isNullValue()) {  in ConstantFoldGetElementPtr()
2112     if (CE->isCast() && Idxs.size() > 1 && Idx0->isNullValue()) {  in ConstantFoldGetElementPtr()