67   bool isTopOfStack(BasicBlock *BB);
71   void push(BasicBlock *BB, Value *Saved);
75   bool hasKill(const BasicBlock *BB);
89   bool closeControlFlow(BasicBlock *BB);
153 /// Is BB the last block saved on the stack ?
154 bool SIAnnotateControlFlow::isTopOfStack(BasicBlock *BB) {  in isTopOfStack()  argument
155   return !Stack.empty() && Stack.back().first == BB;  in isTopOfStack()
163 /// Push a BB and saved value to the control flow stack
164 void SIAnnotateControlFlow::push(BasicBlock *BB, Value *Saved) {  in push()  argument
165   Stack.push_back(std::pair(BB, Saved));  in push()
187 bool SIAnnotateControlFlow::hasKill(const BasicBlock *BB) {  in hasKill()  argument
188   for (const Instruction &I : *BB) {  in hasKill()
274   BasicBlock *BB = Term->getParent();  in handleLoop()  local
275   llvm::Loop *L = LI->getLoopFor(BB);  in handleLoop()
289     if (Pred == BB) // Remember the value of the previous iteration.  in handleLoop()
292     // of the loop at BB, it should not reset or change "Broken", which keeps  in handleLoop()
293     // track of the number of threads exited the loop at BB.  in handleLoop()
294     else if (L->contains(Pred) && DT->dominates(Pred, BB))  in handleLoop()
308 bool SIAnnotateControlFlow::closeControlFlow(BasicBlock *BB) {  in closeControlFlow()  argument
309   llvm::Loop *L = LI->getLoopFor(BB);  in closeControlFlow()
311   assert(Stack.back().first == BB);  in closeControlFlow()
313   if (L && L->getHeader() == BB) {  in closeControlFlow()
321     for (BasicBlock *Pred : predecessors(BB)) {  in closeControlFlow()
326     BB = SplitBlockPredecessors(BB, Preds, "endcf.split", DT, LI, nullptr,  in closeControlFlow()
331   BasicBlock::iterator FirstInsertionPt = BB->getFirstInsertionPt();  in closeControlFlow()
335     if (!DT->dominates(DefBB, BB)) {  in closeControlFlow()
337       FirstInsertionPt = SplitEdge(DefBB, BB, DT, LI)->getFirstInsertionPt();  in closeControlFlow()
363     BasicBlock *BB = *I;  in runOnFunction()  local
364     BranchInst *Term = dyn_cast<BranchInst>(BB->getTerminator());  in runOnFunction()
367       if (isTopOfStack(BB))  in runOnFunction()
368         Changed |= closeControlFlow(BB);  in runOnFunction()
374       if (isTopOfStack(BB))  in runOnFunction()
375         Changed |= closeControlFlow(BB);  in runOnFunction()
377       if (DT->dominates(Term->getSuccessor(1), BB))  in runOnFunction()
382     if (isTopOfStack(BB)) {  in runOnFunction()
384       if (Phi && Phi->getParent() == BB && isElse(Phi) && !hasKill(BB)) {  in runOnFunction()
390       Changed |= closeControlFlow(BB);  in runOnFunction()