80     Value *foldIVUser(Instruction *UseInst, Instruction *IVOperand);
82     bool eliminateIdentitySCEV(Instruction *UseInst, Instruction *IVOperand);
88     bool eliminateIVUser(Instruction *UseInst, Instruction *IVOperand);
89     bool makeIVComparisonInvariant(ICmpInst *ICmp, Value *IVOperand);
90     void eliminateIVComparison(ICmpInst *ICmp, Value *IVOperand);
91     void simplifyIVRemainder(BinaryOperator *Rem, Value *IVOperand,
97     bool strengthenOverflowingOperation(BinaryOperator *OBO, Value *IVOperand);
98     bool strengthenRightShift(BinaryOperator *BO, Value *IVOperand);
128 Value *SimplifyIndvar::foldIVUser(Instruction *UseInst, Instruction *IVOperand) {  in foldIVUser()  argument
140     if (IVOperand != UseInst->getOperand(OperIdx) ||  in foldIVUser()
146     if (!isa<BinaryOperator>(IVOperand)  in foldIVUser()
147         || !isa<ConstantInt>(IVOperand->getOperand(1)))  in foldIVUser()
150     IVSrc = IVOperand->getOperand(0);  in foldIVUser()
179   LLVM_DEBUG(dbgs() << "INDVARS: Eliminated IV operand: " << *IVOperand  in foldIVUser()
190   if (IVOperand->use_empty())  in foldIVUser()
191     DeadInsts.emplace_back(IVOperand);  in foldIVUser()
196                                                Value *IVOperand) {  in makeIVComparisonInvariant()  argument
199   if (IVOperand != ICmp->getOperand(0)) {  in makeIVComparisonInvariant()
201     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in makeIVComparisonInvariant()
212   auto *PN = dyn_cast<PHINode>(IVOperand);  in makeIVComparisonInvariant()
265 void SimplifyIndvar::eliminateIVComparison(ICmpInst *ICmp, Value *IVOperand) {  in eliminateIVComparison()  argument
269   if (IVOperand != ICmp->getOperand(0)) {  in eliminateIVComparison()
271     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in eliminateIVComparison()
292   } else if (makeIVComparisonInvariant(ICmp, IVOperand)) {  in eliminateIVComparison()
376 void SimplifyIndvar::simplifyIVRemainder(BinaryOperator *Rem, Value *IVOperand,  in simplifyIVRemainder()  argument
383   bool UsedAsNumerator = IVOperand == NValue;  in simplifyIVRemainder()
602                                      Instruction *IVOperand) {  in eliminateIVUser()  argument
604     eliminateIVComparison(ICmp, IVOperand);  in eliminateIVUser()
610       simplifyIVRemainder(Bin, IVOperand, IsSRem);  in eliminateIVUser()
630   if (eliminateIdentitySCEV(UseInst, IVOperand))  in eliminateIVUser()
679                                            Instruction *IVOperand) {  in eliminateIdentitySCEV()  argument
681       (UseInst->getType() != IVOperand->getType()) ||  in eliminateIdentitySCEV()
682       (SE->getSCEV(UseInst) != SE->getSCEV(IVOperand)))  in eliminateIdentitySCEV()
704     if (!DT || !DT->dominates(IVOperand, UseInst))  in eliminateIdentitySCEV()
707   if (!LI->replacementPreservesLCSSAForm(UseInst, IVOperand))  in eliminateIdentitySCEV()
712   UseInst->replaceAllUsesWith(IVOperand);  in eliminateIdentitySCEV()
722                                                     Value *IVOperand) {  in strengthenOverflowingOperation()  argument
748                                           Value *IVOperand) {  in strengthenRightShift()  argument
753     ConstantRange IVRange = SE->getUnsignedRange(SE->getSCEV(IVOperand));  in strengthenRightShift()
757                 m_AShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C))) ||  in strengthenRightShift()
759                 m_LShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C)))) {  in strengthenRightShift()
872     Instruction *IVOperand = UseOper.second;  in simplifyUsers()  local
873     for (unsigned N = 0; IVOperand; ++N) {  in simplifyUsers()
876       Value *NewOper = foldIVUser(UseInst, IVOperand);  in simplifyUsers()
879       IVOperand = dyn_cast<Instruction>(NewOper);  in simplifyUsers()
881     if (!IVOperand)  in simplifyUsers()
884     if (eliminateIVUser(UseInst, IVOperand)) {  in simplifyUsers()
885       pushIVUsers(IVOperand, L, Simplified, SimpleIVUsers);  in simplifyUsers()
891            strengthenOverflowingOperation(BO, IVOperand)) ||  in simplifyUsers()
892           (isa<ShlOperator>(BO) && strengthenRightShift(BO, IVOperand))) {  in simplifyUsers()
895         pushIVUsers(IVOperand, L, Simplified, SimpleIVUsers);  in simplifyUsers()