439 struct LoopStructure {  struct
467   LoopStructure() = default;
469   template <typename M> LoopStructure map(M Map) const {  in map()  argument
470     LoopStructure Result;  in map()
486   static Optional<LoopStructure> parseLoopStructure(ScalarEvolution &,
509     LoopStructure Structure;
579   changeIterationSpaceEnd(const LoopStructure &LS, BasicBlock *Preheader,
585   BasicBlock *createPreheader(const LoopStructure &LS, BasicBlock *OldPreheader,
593       LoopStructure &LS, BasicBlock *ContinuationBlockAndPreheader,
625   LoopStructure MainLoopStructure;
630                   const LoopStructure &LS, ScalarEvolution &SE,  in LoopConstrainer()
744 Optional<LoopStructure>
745 LoopStructure::parseLoopStructure(ScalarEvolution &SE,  in parseLoopStructure()
1028   LoopStructure Result;  in parseLoopStructure()
1174     const LoopStructure &LS, BasicBlock *Preheader, Value *ExitSubloopAt,  in changeIterationSpaceEnd()
1321     LoopStructure &LS, BasicBlock *ContinuationBlock,  in rewriteIncomingValuesForPHIs()
1332 BasicBlock *LoopConstrainer::createPreheader(const LoopStructure &LS,  in createPreheader()
1805   Optional<LoopStructure> MaybeLoopStructure =  in run()
1806       LoopStructure::parseLoopStructure(SE, BPI, *L, FailureReason);  in run()
1812   LoopStructure LS = MaybeLoopStructure.getValue();  in run()