48   if (CV->isNullValue()) return Constant::getNullValue(DstTy);  in BitCastConstantVector()
259     if (RHS->isNullValue())  in ExtractConstantBytes()
531   if (V->isNullValue() && !DestTy->isX86_MMXTy() &&  in ConstantFoldCastInstruction()
557         if (!CE->getOperand(i)->isNullValue()) {  in ConstantFoldCastInstruction()
623     if (V->isNullValue())       // Is it an integral null value?  in ConstantFoldCastInstruction()
628     if (V->isNullValue())  in ConstantFoldCastInstruction()
635           CE->getOperand(0)->isNullValue()) {  in ConstantFoldCastInstruction()
658                    CE->getOperand(1)->isNullValue()) {  in ConstantFoldCastInstruction()
734   if (Cond->isNullValue()) return V2;  in ConstantFoldSelectInstruction()
754         V = Cond->isNullValue() ? V2Element : V1Element;  in ConstantFoldSelectInstruction()
790   if (Val->isNullValue())  // ee(zero, x) -> zero  in ConstantFoldExtractElementInstruction()
1230       if (Instruction::isIntDivRem(Opcode) && RHS->isNullValue())  in ConstantFoldBinaryInstruction()
1560       if (V2->isNullValue() && CE1->getType()->isIntOrPtrTy()) {  in evaluateICmpRelation()
1589             if (!CE1->getOperand(i)->isNullValue())  in evaluateICmpRelation()
1613                    !CE1->getOperand(1)->isNullValue() &&  in evaluateICmpRelation()
1669               if (!CE1->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1677               if (!CE2->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1734   if (C1->isNullValue()) {  in ConstantFoldCompareInstruction()
1746   } else if (C2->isNullValue()) {  in ConstantFoldCompareInstruction()
2013         (C1->isNullValue() && !C2->isNullValue())) {  in ConstantFoldCompareInstruction()
2031   if (cast<Constant>(Idxs[0])->isNullValue()) return true;  in isInBoundsIndices()
2046     if (!cast<Constant>(Idxs[i])->isNullValue())  in isInBoundsIndices()
2081   if (Idxs.size() == 1 && (Idx0->isNullValue() || isa<UndefValue>(Idx0)))  in ConstantFoldGetElementPtr()
2087   if (C->isNullValue()) {  in ConstantFoldGetElementPtr()
2091           !cast<Constant>(Idxs[i])->isNullValue()) {  in ConstantFoldGetElementPtr()
2149       if (Idx0->isNullValue())  in ConstantFoldGetElementPtr()
2169         if (!Idx0->isNullValue()) {  in ConstantFoldGetElementPtr()
2195         if (IRIndex && *IRIndex == CE->getNumOperands() - 2 && !Idx0->isNullValue())  in ConstantFoldGetElementPtr()
2214     if (CE->isCast() && Idxs.size() > 1 && Idx0->isNullValue()) {  in ConstantFoldGetElementPtr()