141   BasicBlock *Preheader = L.getLoopPreheader();  in parseLoopStructure()  local
142   if (!Preheader) {  in parseLoopStructure()
394   const DataLayout &DL = Preheader->getModule()->getDataLayout();  in parseLoopStructure()
396   Instruction *Ins = Preheader->getTerminator();  in parseLoopStructure()
514     const LoopStructure &LS, BasicBlock *Preheader, Value *ExitSubloopAt,  in changeIterationSpaceEnd()  argument
595   BranchInst *PreheaderJump = cast<BranchInst>(Preheader->getTerminator());  in changeIterationSpaceEnd()
649     NewPHI->addIncoming(PN.getIncomingValueForBlock(Preheader), Preheader);  in changeIterationSpaceEnd()
657   RRI.IndVarEnd->addIncoming(IndVarStart, Preheader);  in changeIterationSpaceEnd()
681   BasicBlock *Preheader = BasicBlock::Create(Ctx, Tag, &F, LS.Header);  in createPreheader()  local
682   BranchInst::Create(LS.Header, Preheader);  in createPreheader()
684   LS.Header->replacePhiUsesWith(OldPreheader, Preheader);  in createPreheader()
686   return Preheader;  in createPreheader()
721   BasicBlock *Preheader = OriginalLoop.getLoopPreheader();  in run()  local
722   assert(Preheader != nullptr && "precondition!");  in run()
724   OriginalPreheader = Preheader;  in run()
725   MainLoopPreheader = Preheader;  in run()
811     Preheader->getTerminator()->replaceUsesOfWith(MainLoopStructure.Header,  in run()
815         createPreheader(MainLoopStructure, Preheader, "mainloop");  in run()
816     PreLoopRRI = changeIterationSpaceEnd(PreLoop.Structure, Preheader,  in run()
827         createPreheader(PostLoop.Structure, Preheader, "postloop");  in run()
835       MainLoopPreheader != Preheader ? MainLoopPreheader : nullptr;  in run()