225     } else if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(I)) {  in visitExtractElementInst()  local
229         int SrcIdx = SVI->getMaskValue(Elt->getZExtValue());  in visitExtractElementInst()
232           SVI->getOperand(0)->getType()->getVectorNumElements();  in visitExtractElementInst()
237           Src = SVI->getOperand(0);  in visitExtractElementInst()
240           Src = SVI->getOperand(1);  in visitExtractElementInst()
904 static bool isShuffleExtractingFromLHS(ShuffleVectorInst &SVI,  in isShuffleExtractingFromLHS()  argument
907       cast<VectorType>(SVI.getOperand(0)->getType())->getNumElements();  in isShuffleExtractingFromLHS()
919 Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {  in visitShuffleVectorInst()  argument
920   Value *LHS = SVI.getOperand(0);  in visitShuffleVectorInst()
921   Value *RHS = SVI.getOperand(1);  in visitShuffleVectorInst()
922   SmallVector<int, 16> Mask = SVI.getShuffleMask();  in visitShuffleVectorInst()
923   Type *Int32Ty = Type::getInt32Ty(SVI.getContext());  in visitShuffleVectorInst()
928   if (isa<UndefValue>(SVI.getOperand(2)))  in visitShuffleVectorInst()
929     return replaceInstUsesWith(SVI, UndefValue::get(SVI.getType()));  in visitShuffleVectorInst()
931   unsigned VWidth = cast<VectorType>(SVI.getType())->getNumElements();  in visitShuffleVectorInst()
935   if (Value *V = SimplifyDemandedVectorElts(&SVI, AllOnesEltMask, UndefElts)) {  in visitShuffleVectorInst()
936     if (V != &SVI)  in visitShuffleVectorInst()
937       return replaceInstUsesWith(SVI, V);  in visitShuffleVectorInst()
938     LHS = SVI.getOperand(0);  in visitShuffleVectorInst()
939     RHS = SVI.getOperand(1);  in visitShuffleVectorInst()
951                       ? LHS : UndefValue::get(SVI.getType());  in visitShuffleVectorInst()
952       return replaceInstUsesWith(SVI, Result);  in visitShuffleVectorInst()
972     SVI.setOperand(0, SVI.getOperand(1));  in visitShuffleVectorInst()
973     SVI.setOperand(1, UndefValue::get(RHS->getType()));  in visitShuffleVectorInst()
974     SVI.setOperand(2, ConstantVector::get(Elts));  in visitShuffleVectorInst()
975     LHS = SVI.getOperand(0);  in visitShuffleVectorInst()
976     RHS = SVI.getOperand(1);  in visitShuffleVectorInst()
986     if (isLHSID) return replaceInstUsesWith(SVI, LHS);  in visitShuffleVectorInst()
987     if (isRHSID) return replaceInstUsesWith(SVI, RHS);  in visitShuffleVectorInst()
992     return replaceInstUsesWith(SVI, V);  in visitShuffleVectorInst()
1024   if (isShuffleExtractingFromLHS(SVI, Mask)) {  in visitShuffleVectorInst()
1035     for (User *U : SVI.users())  in visitShuffleVectorInst()
1062                                          SVI.getName() + ".extract");  in visitShuffleVectorInst()
1072               : Builder->CreateBitCast(V, CastSrcTy, SVI.getName() + ".bc");  in visitShuffleVectorInst()
1076           NewBC, ConstantInt::get(Int32Ty, BegIdx), SVI.getName() + ".extract");  in visitShuffleVectorInst()
1136     return MadeChange ? &SVI : nullptr;  in visitShuffleVectorInst()
1176     return MadeChange ? &SVI : nullptr;  in visitShuffleVectorInst()
1270   if (isLHSID && VWidth == LHSOp0Width) return replaceInstUsesWith(SVI, newLHS);  in visitShuffleVectorInst()
1271   if (isRHSID && VWidth == RHSOp0Width) return replaceInstUsesWith(SVI, newRHS);  in visitShuffleVectorInst()
1273   return MadeChange ? &SVI : nullptr;  in visitShuffleVectorInst()