288 enum ModifyDT {  enum
428   bool optimizeBlock(BasicBlock &BB, ModifyDT &ModifiedDT);
429   bool optimizeInst(Instruction *I, ModifyDT &ModifiedDT);
434   bool optimizeCallInst(CallInst *CI, ModifyDT &ModifiedDT);
446   bool dupRetToEnableTailCallOpts(BasicBlock *BB, ModifyDT &ModifiedDT);
467   bool splitBranchCondition(Function &F, ModifyDT &ModifiedDT);
473   bool optimizeCmp(CmpInst *Cmp, ModifyDT &ModifiedDT);
474   bool combineToUSubWithOverflow(CmpInst *Cmp, ModifyDT &ModifiedDT);
475   bool combineToUAddWithOverflow(CmpInst *Cmp, ModifyDT &ModifiedDT);
629   ModifyDT ModifiedDT = ModifyDT::NotModifyDT;  in _run()
656       ModifyDT ModifiedDTOnIteration = ModifyDT::NotModifyDT;  in _run()
659       if (ModifiedDTOnIteration == ModifyDT::ModifyBBDT)  in _run()
680         if (ModifiedDTOnIteration != ModifyDT::NotModifyDT)  in _run()
1664                                                ModifyDT &ModifiedDT) {  in combineToUAddWithOverflow()
1693   ModifiedDT = ModifyDT::ModifyInstDT;  in combineToUAddWithOverflow()
1698                                                ModifyDT &ModifiedDT) {  in combineToUSubWithOverflow()
1756   ModifiedDT = ModifyDT::ModifyInstDT;  in combineToUSubWithOverflow()
1977 bool CodeGenPrepare::optimizeCmp(CmpInst *Cmp, ModifyDT &ModifiedDT) {  in optimizeCmp()
2294                                   const DataLayout *DL, ModifyDT &ModifiedDT,  in despeculateCountZeros()
2369   ModifiedDT = ModifyDT::ModifyBBDT;  in despeculateCountZeros()
2373 bool CodeGenPrepare::optimizeCallInst(CallInst *CI, ModifyDT &ModifiedDT) {  in optimizeCallInst()
2624                                                 ModifyDT &ModifiedDT) {  in dupRetToEnableTailCallOpts()
2749     ModifiedDT = ModifyDT::ModifyBBDT;  in dupRetToEnableTailCallOpts()
8297 bool CodeGenPrepare::optimizeInst(Instruction *I, ModifyDT &ModifiedDT) {  in optimizeInst()
8501 bool CodeGenPrepare::optimizeBlock(BasicBlock &BB, ModifyDT &ModifiedDT) {  in optimizeBlock()
8507     ModifiedDT = ModifyDT::NotModifyDT;  in optimizeBlock()
8510       if (ModifiedDT != ModifyDT::NotModifyDT) {  in optimizeBlock()
8523   } while (ModifiedDT == ModifyDT::ModifyInstDT);  in optimizeBlock()
8745 bool CodeGenPrepare::splitBranchCondition(Function &F, ModifyDT &ModifiedDT) {  in splitBranchCondition()
8915     ModifiedDT = ModifyDT::ModifyBBDT;  in splitBranchCondition()