901 Instruction *InstCombiner::FoldICmpShrCst(ICmpInst &ICI, BinaryOperator *Shr,  in FoldICmpShrCst()  argument
916     if (ICI.isSigned() != (Shr->getOpcode() == Instruction::AShr))  in FoldICmpShrCst()
922     if (Shr->getOpcode() == Instruction::AShr &&  in FoldICmpShrCst()
923         (!Shr->isExact() || ShAmtVal == TypeBits - 1))  in FoldICmpShrCst()
927     Worklist.Add(Shr);  in FoldICmpShrCst()
930       ConstantInt::get(Shr->getType(), APInt::getOneBitSet(TypeBits, ShAmtVal));  in FoldICmpShrCst()
933       Shr->getOpcode() == Instruction::AShr ?  in FoldICmpShrCst()
934       Builder->CreateSDiv(Shr->getOperand(0), DivCst, "", Shr->isExact()) :  in FoldICmpShrCst()
935       Builder->CreateUDiv(Shr->getOperand(0), DivCst, "", Shr->isExact());  in FoldICmpShrCst()
958   if (Shr->getOpcode() == Instruction::LShr)  in FoldICmpShrCst()
973   if (Shr->hasOneUse() && Shr->isExact())  in FoldICmpShrCst()
974     return new ICmpInst(ICI.getPredicate(), Shr->getOperand(0), ShiftedCmpRHS);  in FoldICmpShrCst()
976   if (Shr->hasOneUse()) {  in FoldICmpShrCst()
981     Value *And = Builder->CreateAnd(Shr->getOperand(0),  in FoldICmpShrCst()
982                                     Mask, Shr->getName()+".mask");  in FoldICmpShrCst()