78     Value *foldIVUser(Instruction *UseInst, Instruction *IVOperand);
80     bool eliminateIdentitySCEV(Instruction *UseInst, Instruction *IVOperand);
85     bool eliminateIVUser(Instruction *UseInst, Instruction *IVOperand);
86     bool makeIVComparisonInvariant(ICmpInst *ICmp, Value *IVOperand);
87     void eliminateIVComparison(ICmpInst *ICmp, Value *IVOperand);
88     void simplifyIVRemainder(BinaryOperator *Rem, Value *IVOperand,
94     bool strengthenOverflowingOperation(BinaryOperator *OBO, Value *IVOperand);
95     bool strengthenRightShift(BinaryOperator *BO, Value *IVOperand);
107 Value *SimplifyIndvar::foldIVUser(Instruction *UseInst, Instruction *IVOperand) {  in foldIVUser()  argument
119     if (IVOperand != UseInst->getOperand(OperIdx) ||  in foldIVUser()
125     if (!isa<BinaryOperator>(IVOperand)  in foldIVUser()
126         || !isa<ConstantInt>(IVOperand->getOperand(1)))  in foldIVUser()
129     IVSrc = IVOperand->getOperand(0);  in foldIVUser()
158   LLVM_DEBUG(dbgs() << "INDVARS: Eliminated IV operand: " << *IVOperand  in foldIVUser()
169   if (IVOperand->use_empty())  in foldIVUser()
170     DeadInsts.emplace_back(IVOperand);  in foldIVUser()
175                                                Value *IVOperand) {  in makeIVComparisonInvariant()  argument
178   if (IVOperand != ICmp->getOperand(0)) {  in makeIVComparisonInvariant()
180     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in makeIVComparisonInvariant()
194   auto *PN = dyn_cast<PHINode>(IVOperand);  in makeIVComparisonInvariant()
244 void SimplifyIndvar::eliminateIVComparison(ICmpInst *ICmp, Value *IVOperand) {  in eliminateIVComparison()  argument
248   if (IVOperand != ICmp->getOperand(0)) {  in eliminateIVComparison()
250     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in eliminateIVComparison()
271   } else if (makeIVComparisonInvariant(ICmp, IVOperand)) {  in eliminateIVComparison()
355 void SimplifyIndvar::simplifyIVRemainder(BinaryOperator *Rem, Value *IVOperand,  in simplifyIVRemainder()  argument
362   bool UsedAsNumerator = IVOperand == NValue;  in simplifyIVRemainder()
623                                      Instruction *IVOperand) {  in eliminateIVUser()  argument
625     eliminateIVComparison(ICmp, IVOperand);  in eliminateIVUser()
631       simplifyIVRemainder(Bin, IVOperand, IsSRem);  in eliminateIVUser()
647   if (eliminateIdentitySCEV(UseInst, IVOperand))  in eliminateIVUser()
689                                            Instruction *IVOperand) {  in eliminateIdentitySCEV()  argument
691       (UseInst->getType() != IVOperand->getType()) ||  in eliminateIdentitySCEV()
692       (SE->getSCEV(UseInst) != SE->getSCEV(IVOperand)))  in eliminateIdentitySCEV()
714     if (!DT || !DT->dominates(IVOperand, UseInst))  in eliminateIdentitySCEV()
717   if (!LI->replacementPreservesLCSSAForm(UseInst, IVOperand))  in eliminateIdentitySCEV()
722   UseInst->replaceAllUsesWith(IVOperand);  in eliminateIdentitySCEV()
732                                                     Value *IVOperand) {  in strengthenOverflowingOperation()  argument
795                                           Value *IVOperand) {  in strengthenRightShift()  argument
800     ConstantRange IVRange = SE->getUnsignedRange(SE->getSCEV(IVOperand));  in strengthenRightShift()
804                 m_AShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C))) ||  in strengthenRightShift()
806                 m_LShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C)))) {  in strengthenRightShift()
919     Instruction *IVOperand = UseOper.second;  in simplifyUsers()  local
920     for (unsigned N = 0; IVOperand; ++N) {  in simplifyUsers()
923       Value *NewOper = foldIVUser(UseInst, IVOperand);  in simplifyUsers()
926       IVOperand = dyn_cast<Instruction>(NewOper);  in simplifyUsers()
928     if (!IVOperand)  in simplifyUsers()
931     if (eliminateIVUser(UseInst, IVOperand)) {  in simplifyUsers()
932       pushIVUsers(IVOperand, L, Simplified, SimpleIVUsers);  in simplifyUsers()
938            strengthenOverflowingOperation(BO, IVOperand)) ||  in simplifyUsers()
939           (isa<ShlOperator>(BO) && strengthenRightShift(BO, IVOperand))) {  in simplifyUsers()
942         pushIVUsers(IVOperand, L, Simplified, SimpleIVUsers);  in simplifyUsers()