245   bool isProfitableToTransform(const Loop &L, LoopStructure &LS);
594   changeIterationSpaceEnd(const LoopStructure &LS, BasicBlock *Preheader,
600   BasicBlock *createPreheader(const LoopStructure &LS, BasicBlock *OldPreheader,
608       LoopStructure &LS, BasicBlock *ContinuationBlockAndPreheader,
645                   const LoopStructure &LS, ScalarEvolution &SE,  in LoopConstrainer()  argument
649         Range(R), MainLoopStructure(LS) {}  in LoopConstrainer()
1195     const LoopStructure &LS, BasicBlock *Preheader, Value *ExitSubloopAt,  in changeIterationSpaceEnd()  argument
1270   BasicBlock *BBInsertLocation = LS.Latch->getNextNode();  in changeIterationSpaceEnd()
1271   RRI.ExitSelector = BasicBlock::Create(Ctx, Twine(LS.Tag) + ".exit.selector",  in changeIterationSpaceEnd()
1273   RRI.PseudoExit = BasicBlock::Create(Ctx, Twine(LS.Tag) + ".pseudo.exit", &F,  in changeIterationSpaceEnd()
1277   bool Increasing = LS.IndVarIncreasing;  in changeIterationSpaceEnd()
1278   bool IsSignedPredicate = LS.IsSignedPredicate;  in changeIterationSpaceEnd()
1295   Value *IndVarStart = NoopOrExt(LS.IndVarStart);  in changeIterationSpaceEnd()
1298   B.CreateCondBr(EnterLoopCond, LS.Header, RRI.PseudoExit);  in changeIterationSpaceEnd()
1301   LS.LatchBr->setSuccessor(LS.LatchBrExitIdx, RRI.ExitSelector);  in changeIterationSpaceEnd()
1302   B.SetInsertPoint(LS.LatchBr);  in changeIterationSpaceEnd()
1303   Value *IndVarBase = NoopOrExt(LS.IndVarBase);  in changeIterationSpaceEnd()
1306   Value *CondForBranch = LS.LatchBrExitIdx == 1  in changeIterationSpaceEnd()
1310   LS.LatchBr->setCondition(CondForBranch);  in changeIterationSpaceEnd()
1317   Value *LoopExitAt = NoopOrExt(LS.LoopExitAt);  in changeIterationSpaceEnd()
1319   B.CreateCondBr(IterationsLeft, RRI.PseudoExit, LS.LatchExit);  in changeIterationSpaceEnd()
1327   for (PHINode &PN : LS.Header->phis()) {  in changeIterationSpaceEnd()
1332     NewPHI->addIncoming(PN.getIncomingValueForBlock(LS.Latch),  in changeIterationSpaceEnd()
1344   LS.LatchExit->replacePhiUsesWith(LS.Latch, RRI.ExitSelector);  in changeIterationSpaceEnd()
1350     LoopStructure &LS, BasicBlock *ContinuationBlock,  in rewriteIncomingValuesForPHIs()  argument
1353   for (PHINode &PN : LS.Header->phis())  in rewriteIncomingValuesForPHIs()
1357   LS.IndVarStart = RRI.IndVarEnd;  in rewriteIncomingValuesForPHIs()
1360 BasicBlock *LoopConstrainer::createPreheader(const LoopStructure &LS,  in createPreheader()  argument
1363   BasicBlock *Preheader = BasicBlock::Create(Ctx, Tag, &F, LS.Header);  in createPreheader()
1364   BranchInst::Create(LS.Header, Preheader);  in createPreheader()
1366   LS.Header->replacePhiUsesWith(OldPreheader, Preheader);  in createPreheader()
1854                                                         LoopStructure &LS) {  in isProfitableToTransform()  argument
1859     uint64_t hFreq = BFI.getBlockFreq(LS.Header).getFrequency();  in isProfitableToTransform()
1873       BPI->getEdgeProbability(LS.Latch, LS.LatchBrExitIdx);  in isProfitableToTransform()
1928   LoopStructure LS = MaybeLoopStructure.getValue();  in run()  local
1929   if (!isProfitableToTransform(*L, LS))  in run()
1932       cast<SCEVAddRecExpr>(SE.getMinusSCEV(SE.getSCEV(LS.IndVarBase), SE.getSCEV(LS.IndVarStep)));  in run()
1943       LS.IsSignedPredicate ? IntersectSignedRange : IntersectUnsignedRange;  in run()
1948                                                 LS.IsSignedPredicate);  in run()
1954             !MaybeSafeIterRange.getValue().isEmpty(SE, LS.IsSignedPredicate) &&  in run()
1965   LoopConstrainer LC(*L, LI, LPMAddNewLoop, LS, SE, DT,  in run()