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()
1667                                                ModifyDT &ModifiedDT) {  in combineToUAddWithOverflow()
1696   ModifiedDT = ModifyDT::ModifyInstDT;  in combineToUAddWithOverflow()
1701                                                ModifyDT &ModifiedDT) {  in combineToUSubWithOverflow()
1759   ModifiedDT = ModifyDT::ModifyInstDT;  in combineToUSubWithOverflow()
1947 bool CodeGenPrepare::optimizeCmp(CmpInst *Cmp, ModifyDT &ModifiedDT) {  in optimizeCmp()
2261                                   const DataLayout *DL, ModifyDT &ModifiedDT,  in despeculateCountZeros()
2336   ModifiedDT = ModifyDT::ModifyBBDT;  in despeculateCountZeros()
2340 bool CodeGenPrepare::optimizeCallInst(CallInst *CI, ModifyDT &ModifiedDT) {  in optimizeCallInst()
2557                                                 ModifyDT &ModifiedDT) {  in dupRetToEnableTailCallOpts()
2655     ModifiedDT = ModifyDT::ModifyBBDT;  in dupRetToEnableTailCallOpts()
8183 bool CodeGenPrepare::optimizeInst(Instruction *I, ModifyDT &ModifiedDT) {  in optimizeInst()
8386 bool CodeGenPrepare::optimizeBlock(BasicBlock &BB, ModifyDT &ModifiedDT) {  in optimizeBlock()
8392     ModifiedDT = ModifyDT::NotModifyDT;  in optimizeBlock()
8395       if (ModifiedDT != ModifyDT::NotModifyDT) {  in optimizeBlock()
8408   } while (ModifiedDT == ModifyDT::ModifyInstDT);  in optimizeBlock()
8628 bool CodeGenPrepare::splitBranchCondition(Function &F, ModifyDT &ModifiedDT) {  in splitBranchCondition()
8797     ModifiedDT = ModifyDT::ModifyBBDT;  in splitBranchCondition()