135   BasicBlock *getDiamondTail(BasicBlock *BB);
136   bool isDiamondHead(BasicBlock *BB);
141   LoadInst *canHoistFromBlock(BasicBlock *BB, LoadInst *LI);
142   void hoistInstruction(BasicBlock *BB, Instruction *HoistCand,
145   bool hoistLoad(BasicBlock *BB, LoadInst *HoistCand, LoadInst *ElseInst);
146   bool mergeLoads(BasicBlock *BB);
148   StoreInst *canSinkFromBlock(BasicBlock *BB, StoreInst *SI);
149   PHINode *getPHIOperand(BasicBlock *BB, StoreInst *S0, StoreInst *S1);
152   bool sinkStore(BasicBlock *BB, StoreInst *SinkCand, StoreInst *ElseInst);
153   bool mergeStores(BasicBlock *BB);
199 BasicBlock *MergedLoadStoreMotion::getDiamondTail(BasicBlock *BB) {  in getDiamondTail()  argument
200   assert(isDiamondHead(BB) && "Basic block is not head of a diamond");  in getDiamondTail()
201   BranchInst *BI = (BranchInst *)(BB->getTerminator());  in getDiamondTail()
210 bool MergedLoadStoreMotion::isDiamondHead(BasicBlock *BB) {  in isDiamondHead()  argument
211   if (!BB)  in isDiamondHead()
213   if (!isa<BranchInst>(BB->getTerminator()))  in isDiamondHead()
215   if (BB->getTerminator()->getNumSuccessors() != 2)  in isDiamondHead()
218   BranchInst *BI = (BranchInst *)(BB->getTerminator());  in isDiamondHead()
288 void MergedLoadStoreMotion::hoistInstruction(BasicBlock *BB,  in hoistInstruction()  argument
291   DEBUG(dbgs() << " Hoist Instruction into BB \n"; BB->dump();  in hoistInstruction()
295   assert(HoistCand->getParent() != BB);  in hoistInstruction()
302   Instruction *HoistPt = BB->getTerminator();  in hoistInstruction()
333 bool MergedLoadStoreMotion::hoistLoad(BasicBlock *BB, LoadInst *L0,  in hoistLoad()  argument
342     DEBUG(dbgs() << "Hoist Instruction into BB \n"; BB->dump();  in hoistLoad()
345     hoistInstruction(BB, A0, A1);  in hoistLoad()
346     hoistInstruction(BB, L0, L1);  in hoistLoad()
358 bool MergedLoadStoreMotion::mergeLoads(BasicBlock *BB) {  in mergeLoads()  argument
360   assert(isDiamondHead(BB));  in mergeLoads()
361   BranchInst *BI = dyn_cast<BranchInst>(BB->getTerminator());  in mergeLoads()
381       bool Res = hoistLoad(BB, L0, L1);  in mergeLoads()
439 PHINode *MergedLoadStoreMotion::getPHIOperand(BasicBlock *BB, StoreInst *S0,  in getPHIOperand()  argument
447                             &BB->front());  in getPHIOperand()
461 bool MergedLoadStoreMotion::sinkStore(BasicBlock *BB, StoreInst *S0,  in sinkStore()  argument
469     DEBUG(dbgs() << "Sink Instruction into BB \n"; BB->dump();  in sinkStore()
473     BasicBlock::iterator InsertPt = BB->getFirstInsertionPt();  in sinkStore()
487     PHINode *NewPN = getPHIOperand(BB, S0, S1);  in sinkStore()
577     BasicBlock *BB = &*FI++;  in runOnFunction()  local
581     if (isDiamondHead(BB)) {  in runOnFunction()
582       Changed |= mergeLoads(BB);  in runOnFunction()
583       Changed |= mergeStores(getDiamondTail(BB));  in runOnFunction()