84     if (isa<ConstantInt>(V) || isa<ConstantFP>(V))  in FoldBitCast()
132   if (isa<PoisonValue>(V))  in ConstantFoldCastInstruction()
135   if (isa<UndefValue>(V)) {  in ConstantFoldCastInstruction()
162   if ((isa<ConstantVector>(V) || isa<ConstantDataVector>(V)) &&  in ConstantFoldCastInstruction()
285       if (isa<PoisonValue>(Cond)) {  in ConstantFoldSelectInstruction()
289       } else if (isa<UndefValue>(Cond)) {  in ConstantFoldSelectInstruction()
290         V = isa<UndefValue>(V1Element) ? V1Element : V2Element;  in ConstantFoldSelectInstruction()
292         if (!isa<ConstantInt>(Cond)) break;  in ConstantFoldSelectInstruction()
303   if (isa<PoisonValue>(Cond))  in ConstantFoldSelectInstruction()
306   if (isa<UndefValue>(Cond)) {  in ConstantFoldSelectInstruction()
307     if (isa<UndefValue>(V1)) return V1;  in ConstantFoldSelectInstruction()
313   if (isa<PoisonValue>(V1))  in ConstantFoldSelectInstruction()
315   if (isa<PoisonValue>(V2))  in ConstantFoldSelectInstruction()
321     if (isa<PoisonValue>(C))  in ConstantFoldSelectInstruction()
326     if (isa<ConstantExpr>(C))  in ConstantFoldSelectInstruction()
329     if (isa<ConstantInt>(C) || isa<GlobalVariable>(C) || isa<ConstantFP>(C) ||  in ConstantFoldSelectInstruction()
330         isa<ConstantPointerNull>(C) || isa<Function>(C))  in ConstantFoldSelectInstruction()
339   if (isa<UndefValue>(V1) && NotPoison(V2)) return V2;  in ConstantFoldSelectInstruction()
340   if (isa<UndefValue>(V2) && NotPoison(V1)) return V1;  in ConstantFoldSelectInstruction()
351   if (isa<PoisonValue>(Val) || isa<UndefValue>(Idx))  in ConstantFoldExtractElementInstruction()
355   if (isa<UndefValue>(Val))  in ConstantFoldExtractElementInstruction()
412   if (isa<UndefValue>(Idx))  in ConstantFoldInsertElementInstruction()
417   if (isa<ConstantAggregateZero>(Val) && Elt->isNullValue())  in ConstantFoldInsertElementInstruction()
425   if (isa<ScalableVectorType>(Val->getType()))  in ConstantFoldInsertElementInstruction()
456       ElementCount::get(MaskNumElts, isa<ScalableVectorType>(V1VTy));  in ConstantFoldShuffleVectorInstruction()
480   if (isa<ScalableVectorType>(V1VTy))  in ConstantFoldShuffleVectorInstruction()
557   bool IsScalableVector = isa<ScalableVectorType>(C->getType());  in ConstantFoldUnaryInstruction()
559       (!C->getType()->isVectorTy() || IsScalableVector) && isa<UndefValue>(C);  in ConstantFoldUnaryInstruction()
573   assert(!isa<ConstantInt>(C) && "Unexpected Integer UnaryOp");  in ConstantFoldUnaryInstruction()
628   if (isa<PoisonValue>(C1) || isa<PoisonValue>(C2))  in ConstantFoldBinaryInstruction()
633   bool IsScalableVector = isa<ScalableVectorType>(C1->getType());  in ConstantFoldBinaryInstruction()
636       (isa<UndefValue>(C1) || isa<UndefValue>(C2));  in ConstantFoldBinaryInstruction()
640       if (isa<UndefValue>(C1) && isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
649       if (isa<UndefValue>(C1) && isa<UndefValue>(C2)) // undef & undef -> undef  in ConstantFoldBinaryInstruction()
654       if (isa<UndefValue>(C1) && isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
682       if (isa<UndefValue>(C1) && isa<UndefValue>(C2)) // undef | undef -> undef  in ConstantFoldBinaryInstruction()
687       if (isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
693       if (isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
700       if (isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
706       if (match(C1, m_NegZeroFP()) && isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
714       if (isa<UndefValue>(C1) && isa<UndefValue>(C2))  in ConstantFoldBinaryInstruction()
758             isa<GlobalValue>(CE1->getOperand(0))) {  in ConstantFoldBinaryInstruction()
776             if (isa<Function>(GV) && !DL.getFunctionPtrAlign())  in ConstantFoldBinaryInstruction()
778           } else if (isa<GlobalVariable>(GV)) {  in ConstantFoldBinaryInstruction()
799   } else if (isa<ConstantInt>(C1)) {  in ConstantFoldBinaryInstruction()
945       if (!isa<ConstantExpr>(T) || cast<ConstantExpr>(T)->getOpcode() != Opcode)  in ConstantFoldBinaryInstruction()
948   } else if (isa<ConstantExpr>(C2)) {  in ConstantFoldBinaryInstruction()
1004   if (!isa<GlobalAlias>(GV1) && !isa<GlobalAlias>(GV2))  in areGlobalsPotentiallyEqual()
1030     if (isa<ConstantExpr>(V))  in evaluateICmpRelation()
1032     if (isa<GlobalValue>(V))  in evaluateICmpRelation()
1034     if (isa<BlockAddress>(V))  in evaluateICmpRelation()
1053     } else if (isa<ConstantPointerNull>(V2)) {  in evaluateICmpRelation()
1061     } else if (isa<BlockAddress>(V2)) {  in evaluateICmpRelation()
1063     } else if (isa<ConstantPointerNull>(V2)) {  in evaluateICmpRelation()
1069       if (!GV->hasExternalWeakLinkage() && !isa<GlobalAlias>(GV) &&  in evaluateICmpRelation()
1084       if (isa<ConstantPointerNull>(V2)) {  in evaluateICmpRelation()
1105         if (isa<GlobalValue>(CE1Op0) && isa<GlobalValue>(CE2Op0)) {  in evaluateICmpRelation()
1142   if (isa<PoisonValue>(C1) || isa<PoisonValue>(C2))  in ConstantFoldCompareInstruction()
1145   if (isa<UndefValue>(C1) || isa<UndefValue>(C2)) {  in ConstantFoldCompareInstruction()
1178       if (isa<ConstantInt>(C2))  in ConstantFoldCompareInstruction()
1188   if (isa<ConstantInt>(C1) && isa<ConstantInt>(C2)) {  in ConstantFoldCompareInstruction()
1192   } else if (isa<ConstantFP>(C1) && isa<ConstantFP>(C2)) {  in ConstantFoldCompareInstruction()
1207     if (isa<ScalableVectorType>(C1VTy))  in ConstantFoldCompareInstruction()
1327     if ((!isa<ConstantExpr>(C1) && isa<ConstantExpr>(C2)) ||  in ConstantFoldCompareInstruction()
1347   if (isa<PoisonValue>(C))  in ConstantFoldGetElementPtr()
1350   if (isa<UndefValue>(C))  in ConstantFoldGetElementPtr()
1360       return IdxC->isNullValue() || isa<UndefValue>(IdxC);  in ConstantFoldGetElementPtr()