70     Value *foldIVUser(Instruction *UseInst, Instruction *IVOperand);
72     bool eliminateIVUser(Instruction *UseInst, Instruction *IVOperand);
91 Value *SimplifyIndvar::foldIVUser(Instruction *UseInst, Instruction *IVOperand) {  in foldIVUser()  argument
95   switch (UseInst->getOpcode()) {  in foldIVUser()
102     if (IVOperand != UseInst->getOperand(OperIdx) ||  in foldIVUser()
103         !isa<ConstantInt>(UseInst->getOperand(1)))  in foldIVUser()
116     ConstantInt *D = cast<ConstantInt>(UseInst->getOperand(1));  in foldIVUser()
117     if (UseInst->getOpcode() == Instruction::LShr) {  in foldIVUser()
119       uint32_t BitWidth = cast<IntegerType>(UseInst->getType())->getBitWidth();  in foldIVUser()
123       D = ConstantInt::get(UseInst->getContext(),  in foldIVUser()
129   if (!SE->isSCEVable(UseInst->getType()))  in foldIVUser()
133   if (SE->getSCEV(UseInst) != FoldedExpr)  in foldIVUser()
137         << " -> " << *UseInst << '\n');  in foldIVUser()
139   UseInst->setOperand(OperIdx, IVSrc);  in foldIVUser()
140   assert(SE->getSCEV(UseInst) == FoldedExpr && "bad SCEV with folded oper");  in foldIVUser()
239 bool SimplifyIndvar::eliminateIVUser(Instruction *UseInst,  in eliminateIVUser()  argument
241   if (ICmpInst *ICmp = dyn_cast<ICmpInst>(UseInst)) {  in eliminateIVUser()
245   if (BinaryOperator *Rem = dyn_cast<BinaryOperator>(UseInst)) {  in eliminateIVUser()
254   if (!SE->isSCEVable(UseInst->getType()) ||  in eliminateIVUser()
255       (UseInst->getType() != IVOperand->getType()) ||  in eliminateIVUser()
256       (SE->getSCEV(UseInst) != SE->getSCEV(IVOperand)))  in eliminateIVUser()
259   DEBUG(dbgs() << "INDVARS: Eliminated identity: " << *UseInst << '\n');  in eliminateIVUser()
261   UseInst->replaceAllUsesWith(IVOperand);  in eliminateIVUser()
264   DeadInsts.push_back(UseInst);  in eliminateIVUser()
365     if (Instruction *UseInst = dyn_cast<Instruction>(U.getUser())) {  in splitOverflowIntrinsic()  local
366       BasicBlock *UseBB = UseInst->getParent();  in splitOverflowIntrinsic()
367       if (PHINode *PHI = dyn_cast<PHINode>(UseInst))  in splitOverflowIntrinsic()
463     Instruction *UseInst = UseOper.first;  in simplifyUsers()  local
466     if (UseInst == CurrIV) continue;  in simplifyUsers()
469       UseInst = splitOverflowIntrinsic(UseInst, V->getDomTree());  in simplifyUsers()
470       if (!UseInst)  in simplifyUsers()