47   if (CV->isNullValue()) return Constant::getNullValue(DstTy);  in BitCastConstantVector()
259     if (RHS->isNullValue())  in ExtractConstantBytes()
534   if (V->isNullValue() && !DestTy->isX86_MMXTy() &&  in ConstantFoldCastInstruction()
553         if (!CE->getOperand(i)->isNullValue()) {  in ConstantFoldCastInstruction()
621     if (V->isNullValue())       // Is it an integral null value?  in ConstantFoldCastInstruction()
626     if (V->isNullValue())  in ConstantFoldCastInstruction()
633           CE->getOperand(0)->isNullValue()) {  in ConstantFoldCastInstruction()
647                    CE->getOperand(1)->isNullValue()) {  in ConstantFoldCastInstruction()
728   if (Cond->isNullValue()) return V2;  in ConstantFoldSelectInstruction()
748         V = Cond->isNullValue() ? V2Element : V1Element;  in ConstantFoldSelectInstruction()
784   if (Val->isNullValue())  // ee(zero, x) -> zero  in ConstantFoldExtractElementInstruction()
1133         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1136         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1141         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1144         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1539       if (V2->isNullValue() &&  in evaluateICmpRelation()
1569             if (!CE1->getOperand(i)->isNullValue())  in evaluateICmpRelation()
1593                    !CE1->getOperand(1)->isNullValue() &&  in evaluateICmpRelation()
1649               if (!CE1->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1657               if (!CE2->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1713   if (C1->isNullValue()) {  in ConstantFoldCompareInstruction()
1723   } else if (C2->isNullValue()) {  in ConstantFoldCompareInstruction()
1988         (C1->isNullValue() && !C2->isNullValue())) {  in ConstantFoldCompareInstruction()
2006   if (cast<Constant>(Idxs[0])->isNullValue()) return true;  in isInBoundsIndices()
2013     if (!cast<Constant>(Idxs[i])->isNullValue())  in isInBoundsIndices()
2055   if ((Idxs.size() == 1 && Idx0->isNullValue()))  in ConstantFoldGetElementPtrImpl()
2068   if (C->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2071       if (!cast<Constant>(Idxs[i])->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2117       if (Idx0->isNullValue())  in ConstantFoldGetElementPtrImpl()
2132         if (!Idx0->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2168     if (CE->isCast() && Idxs.size() > 1 && Idx0->isNullValue()) {  in ConstantFoldGetElementPtrImpl()