70     Value *foldIVUser(Instruction *UseInst, Instruction *IVOperand);
72     bool eliminateIdentitySCEV(Instruction *UseInst, Instruction *IVOperand);
74     bool eliminateIVUser(Instruction *UseInst, Instruction *IVOperand);
93 Value *SimplifyIndvar::foldIVUser(Instruction *UseInst, Instruction *IVOperand) {  in foldIVUser()  argument
97   switch (UseInst->getOpcode()) {  in foldIVUser()
104     if (IVOperand != UseInst->getOperand(OperIdx) ||  in foldIVUser()
105         !isa<ConstantInt>(UseInst->getOperand(1)))  in foldIVUser()
118     ConstantInt *D = cast<ConstantInt>(UseInst->getOperand(1));  in foldIVUser()
119     if (UseInst->getOpcode() == Instruction::LShr) {  in foldIVUser()
121       uint32_t BitWidth = cast<IntegerType>(UseInst->getType())->getBitWidth();  in foldIVUser()
125       D = ConstantInt::get(UseInst->getContext(),  in foldIVUser()
131   if (!SE->isSCEVable(UseInst->getType()))  in foldIVUser()
135   if (SE->getSCEV(UseInst) != FoldedExpr)  in foldIVUser()
139         << " -> " << *UseInst << '\n');  in foldIVUser()
141   UseInst->setOperand(OperIdx, IVSrc);  in foldIVUser()
142   assert(SE->getSCEV(UseInst) == FoldedExpr && "bad SCEV with folded oper");  in foldIVUser()
286 bool SimplifyIndvar::eliminateIVUser(Instruction *UseInst,  in eliminateIVUser()  argument
288   if (ICmpInst *ICmp = dyn_cast<ICmpInst>(UseInst)) {  in eliminateIVUser()
292   if (BinaryOperator *Rem = dyn_cast<BinaryOperator>(UseInst)) {  in eliminateIVUser()
300   if (eliminateIdentitySCEV(UseInst, IVOperand))  in eliminateIVUser()
307 bool SimplifyIndvar::eliminateIdentitySCEV(Instruction *UseInst,  in eliminateIdentitySCEV()  argument
309   if (!SE->isSCEVable(UseInst->getType()) ||  in eliminateIdentitySCEV()
310       (UseInst->getType() != IVOperand->getType()) ||  in eliminateIdentitySCEV()
311       (SE->getSCEV(UseInst) != SE->getSCEV(IVOperand)))  in eliminateIdentitySCEV()
330   if (isa<PHINode>(UseInst))  in eliminateIdentitySCEV()
333     if (!DT || !DT->dominates(IVOperand, UseInst))  in eliminateIdentitySCEV()
336   if (!LI->replacementPreservesLCSSAForm(UseInst, IVOperand))  in eliminateIdentitySCEV()
339   DEBUG(dbgs() << "INDVARS: Eliminated identity: " << *UseInst << '\n');  in eliminateIdentitySCEV()
341   UseInst->replaceAllUsesWith(IVOperand);  in eliminateIdentitySCEV()
344   DeadInsts.emplace_back(UseInst);  in eliminateIdentitySCEV()
445     if (Instruction *UseInst = dyn_cast<Instruction>(U.getUser())) {  in splitOverflowIntrinsic()  local
446       BasicBlock *UseBB = UseInst->getParent();  in splitOverflowIntrinsic()
447       if (PHINode *PHI = dyn_cast<PHINode>(UseInst))  in splitOverflowIntrinsic()
543     Instruction *UseInst = UseOper.first;  in simplifyUsers()  local
546     if (UseInst == CurrIV) continue;  in simplifyUsers()
549       UseInst = splitOverflowIntrinsic(UseInst, V->getDomTree());  in simplifyUsers()
550       if (!UseInst)  in simplifyUsers()