88     Value *foldIVUser(Instruction *UseInst, Instruction *IVOperand);
90     bool eliminateIdentitySCEV(Instruction *UseInst, Instruction *IVOperand);
97     bool eliminateIVUser(Instruction *UseInst, Instruction *IVOperand);
98     bool makeIVComparisonInvariant(ICmpInst *ICmp, Instruction *IVOperand);
99     void eliminateIVComparison(ICmpInst *ICmp, Instruction *IVOperand);
100     void simplifyIVRemainder(BinaryOperator *Rem, Instruction *IVOperand,
106     bool strengthenBinaryOp(BinaryOperator *BO, Instruction *IVOperand);
108                                         Instruction *IVOperand);
109     bool strengthenRightShift(BinaryOperator *BO, Instruction *IVOperand);
134 Value *SimplifyIndvar::foldIVUser(Instruction *UseInst, Instruction *IVOperand) {  in foldIVUser()  argument
146     if (IVOperand != UseInst->getOperand(OperIdx) ||  in foldIVUser()
152     if (!isa<BinaryOperator>(IVOperand)  in foldIVUser()
153         || !isa<ConstantInt>(IVOperand->getOperand(1)))  in foldIVUser()
156     IVSrc = IVOperand->getOperand(0);  in foldIVUser()
186   LLVM_DEBUG(dbgs() << "INDVARS: Eliminated IV operand: " << *IVOperand  in foldIVUser()
197   if (IVOperand->use_empty())  in foldIVUser()
198     DeadInsts.emplace_back(IVOperand);  in foldIVUser()
203                                                Instruction *IVOperand) {  in makeIVComparisonInvariant()  argument
209   if (IVOperand != ICmp->getOperand(0)) {  in makeIVComparisonInvariant()
211     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in makeIVComparisonInvariant()
236       Rewriter.expandCodeFor(InvariantLHS, IVOperand->getType(), PHTerm);  in makeIVComparisonInvariant()
238       Rewriter.expandCodeFor(InvariantRHS, IVOperand->getType(), PHTerm);  in makeIVComparisonInvariant()
250                                            Instruction *IVOperand) {  in eliminateIVComparison()  argument
254   if (IVOperand != ICmp->getOperand(0)) {  in eliminateIVComparison()
256     assert(IVOperand == ICmp->getOperand(1) && "Can't find IVOperand");  in eliminateIVComparison()
278   } else if (makeIVComparisonInvariant(ICmp, IVOperand)) {  in eliminateIVComparison()
366                                          Instruction *IVOperand,  in simplifyIVRemainder()  argument
373   bool UsedAsNumerator = IVOperand == NValue;  in simplifyIVRemainder()
595                                      Instruction *IVOperand) {  in eliminateIVUser()  argument
597     eliminateIVComparison(ICmp, IVOperand);  in eliminateIVUser()
603       simplifyIVRemainder(Bin, IVOperand, IsSRem);  in eliminateIVUser()
623   if (eliminateIdentitySCEV(UseInst, IVOperand))  in eliminateIVUser()
687   Instruction *IVOperand = cast<Instruction>(UseInst->getOperand(0));  in replaceFloatIVWithIntegerIV()  local
689   const SCEV *IV = SE->getSCEV(IVOperand);  in replaceFloatIVWithIntegerIV()
708       if (IVOperand->getType() != CI->getType()) {  in replaceFloatIVWithIntegerIV()
710         StringRef Name = IVOperand->getName();  in replaceFloatIVWithIntegerIV()
713         if (SE->getTypeSizeInBits(IVOperand->getType()) >  in replaceFloatIVWithIntegerIV()
715           Conv = Builder.CreateTrunc(IVOperand, CI->getType(), Name + ".trunc");  in replaceFloatIVWithIntegerIV()
718           Conv = Builder.CreateZExt(IVOperand, CI->getType(), Name + ".zext");  in replaceFloatIVWithIntegerIV()
720           Conv = Builder.CreateSExt(IVOperand, CI->getType(), Name + ".sext");  in replaceFloatIVWithIntegerIV()
723         Conv = IVOperand;  in replaceFloatIVWithIntegerIV()
740                                            Instruction *IVOperand) {  in eliminateIdentitySCEV()  argument
742       UseInst->getType() != IVOperand->getType())  in eliminateIdentitySCEV()
746   if (UseSCEV != SE->getSCEV(IVOperand))  in eliminateIdentitySCEV()
768     if (!DT || !DT->dominates(IVOperand, UseInst))  in eliminateIdentitySCEV()
771   if (!LI->replacementPreservesLCSSAForm(UseInst, IVOperand))  in eliminateIdentitySCEV()
775   if (!impliesPoison(IVOperand, UseInst)) {  in eliminateIdentitySCEV()
777     if (!SE->canReuseInstruction(UseSCEV, IVOperand, DropPoisonGeneratingInsts))  in eliminateIdentitySCEV()
787   UseInst->replaceAllUsesWith(IVOperand);  in eliminateIdentitySCEV()
795                                         Instruction *IVOperand) {  in strengthenBinaryOp()  argument
797           strengthenOverflowingOperation(BO, IVOperand)) ||  in strengthenBinaryOp()
798          (isa<ShlOperator>(BO) && strengthenRightShift(BO, IVOperand));  in strengthenBinaryOp()
804                                                     Instruction *IVOperand) {  in strengthenOverflowingOperation()  argument
828                                           Instruction *IVOperand) {  in strengthenRightShift()  argument
831     ConstantRange IVRange = SE->getUnsignedRange(SE->getSCEV(IVOperand));  in strengthenRightShift()
835                 m_AShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C))) ||  in strengthenRightShift()
837                 m_LShr(m_Shl(m_Value(), m_Specific(IVOperand)), m_APInt(C)))) {  in strengthenRightShift()
957     Instruction *IVOperand = UseOper.second;  in simplifyUsers()  local
958     for (unsigned N = 0; IVOperand; ++N) {  in simplifyUsers()
962       Value *NewOper = foldIVUser(UseInst, IVOperand);  in simplifyUsers()
965       IVOperand = dyn_cast<Instruction>(NewOper);  in simplifyUsers()
967     if (!IVOperand)  in simplifyUsers()
970     if (eliminateIVUser(UseInst, IVOperand)) {  in simplifyUsers()
971       pushIVUsers(IVOperand, Simplified, SimpleIVUsers);  in simplifyUsers()
976       if (strengthenBinaryOp(BO, IVOperand)) {  in simplifyUsers()
979         pushIVUsers(IVOperand, Simplified, SimpleIVUsers);  in simplifyUsers()
986       pushIVUsers(IVOperand, Simplified, SimpleIVUsers);  in simplifyUsers()