248     } else if (InsertElementInst *IE = dyn_cast<InsertElementInst>(I)) {  in visitExtractElementInst()  local
250       if (IE->getOperand(2) == EI.getOperand(1))  in visitExtractElementInst()
251         return ReplaceInstUsesWith(EI, IE->getOperand(1));  in visitExtractElementInst()
254       if (isa<Constant>(IE->getOperand(2)) && isa<Constant>(EI.getOperand(1))) {  in visitExtractElementInst()
256         EI.setOperand(0, IE->getOperand(0));  in visitExtractElementInst()
529 Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {  in visitInsertElementInst()  argument
530   Value *VecOp    = IE.getOperand(0);  in visitInsertElementInst()
531   Value *ScalarOp = IE.getOperand(1);  in visitInsertElementInst()
532   Value *IdxOp    = IE.getOperand(2);  in visitInsertElementInst()
536     ReplaceInstUsesWith(IE, VecOp);  in visitInsertElementInst()
542       unsigned NumInsertVectorElts = IE.getType()->getNumElements();  in visitInsertElementInst()
550         return ReplaceInstUsesWith(IE, VecOp);  in visitInsertElementInst()
553         return ReplaceInstUsesWith(IE, UndefValue::get(IE.getType()));  in visitInsertElementInst()
558         return ReplaceInstUsesWith(IE, VecOp);  in visitInsertElementInst()
562       if (!IE.hasOneUse() || !isa<InsertElementInst>(IE.user_back())) {  in visitInsertElementInst()
564         ShuffleOps LR = CollectShuffleElements(&IE, Mask, nullptr);  in visitInsertElementInst()
568         if (LR.first != &IE && LR.second != &IE) {  in visitInsertElementInst()
582   if (Value *V = SimplifyDemandedVectorElts(&IE, AllOnesEltMask, UndefElts)) {  in visitInsertElementInst()
583     if (V != &IE)  in visitInsertElementInst()
584       return ReplaceInstUsesWith(IE, V);  in visitInsertElementInst()
585     return &IE;  in visitInsertElementInst()