49   if (CV->isNullValue()) return Constant::getNullValue(DstTy);  in BitCastConstantVector()
258     if (RHS->isNullValue())  in ExtractConstantBytes()
536   if (V->isNullValue() && !DestTy->isX86_MMXTy())  in ConstantFoldCastInstruction()
554         if (!CE->getOperand(i)->isNullValue()) {  in ConstantFoldCastInstruction()
622     if (V->isNullValue())       // Is it an integral null value?  in ConstantFoldCastInstruction()
627     if (V->isNullValue())  in ConstantFoldCastInstruction()
634           CE->getOperand(0)->isNullValue()) {  in ConstantFoldCastInstruction()
648                    CE->getOperand(1)->isNullValue()) {  in ConstantFoldCastInstruction()
729   if (Cond->isNullValue()) return V2;  in ConstantFoldSelectInstruction()
749         V = Cond->isNullValue() ? V2Element : V1Element;  in ConstantFoldSelectInstruction()
785   if (Val->isNullValue())  // ee(zero, x) -> zero  in ConstantFoldExtractElementInstruction()
1120         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1123         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1128         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1131         assert(!CI2->isNullValue() && "Div by zero handled above");  in ConstantFoldBinaryInstruction()
1522       if (V2->isNullValue() &&  in evaluateICmpRelation()
1552             if (!CE1->getOperand(i)->isNullValue())  in evaluateICmpRelation()
1576                    !CE1->getOperand(1)->isNullValue() &&  in evaluateICmpRelation()
1632               if (!CE1->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1640               if (!CE2->getOperand(i)->isNullValue()) {  in evaluateICmpRelation()
1696   if (C1->isNullValue()) {  in ConstantFoldCompareInstruction()
1706   } else if (C2->isNullValue()) {  in ConstantFoldCompareInstruction()
1971         (C1->isNullValue() && !C2->isNullValue())) {  in ConstantFoldCompareInstruction()
1990   if (cast<Constant>(Idxs[0])->isNullValue()) return true;  in isInBoundsIndices()
1997     if (!cast<Constant>(Idxs[i])->isNullValue())  in isInBoundsIndices()
2039   if ((Idxs.size() == 1 && Idx0->isNullValue()))  in ConstantFoldGetElementPtrImpl()
2050   if (C->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2053       if (!cast<Constant>(Idxs[i])->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2097       if (Idx0->isNullValue())  in ConstantFoldGetElementPtrImpl()
2112         if (!Idx0->isNullValue()) {  in ConstantFoldGetElementPtrImpl()
2148     if (CE->isCast() && Idxs.size() > 1 && Idx0->isNullValue()) {  in ConstantFoldGetElementPtrImpl()