Ejemplos de TerminatorInst::setDebugLoc en C++ (Cpp)

Ejemplo n.º 1

Archivo: BasicBlockUtils.cpp Proyecto: BNieuwenhuizen/llvm

TerminatorInst *
llvm::SplitBlockAndInsertIfThen(Value *Cond, Instruction *SplitBefore,
                                bool Unreachable, MDNode *BranchWeights,
                                DominatorTree *DT, LoopInfo *LI) {
  BasicBlock *Head = SplitBefore->getParent();
  BasicBlock *Tail = Head->splitBasicBlock(SplitBefore->getIterator());
  TerminatorInst *HeadOldTerm = Head->getTerminator();
  LLVMContext &C = Head->getContext();
  BasicBlock *ThenBlock = BasicBlock::Create(C, "", Head->getParent(), Tail);
  TerminatorInst *CheckTerm;
  if (Unreachable)
    CheckTerm = new UnreachableInst(C, ThenBlock);
  else
    CheckTerm = BranchInst::Create(Tail, ThenBlock);
  CheckTerm->setDebugLoc(SplitBefore->getDebugLoc());
  BranchInst *HeadNewTerm =
    BranchInst::Create(/*ifTrue*/ThenBlock, /*ifFalse*/Tail, Cond);
  HeadNewTerm->setMetadata(LLVMContext::MD_prof, BranchWeights);
  ReplaceInstWithInst(HeadOldTerm, HeadNewTerm);

  if (DT) {
    if (DomTreeNode *OldNode = DT->getNode(Head)) {
      std::vector<DomTreeNode *> Children(OldNode->begin(), OldNode->end());

      DomTreeNode *NewNode = DT->addNewBlock(Tail, Head);
      for (DomTreeNode *Child : Children)
        DT->changeImmediateDominator(Child, NewNode);

      // Head dominates ThenBlock.
      DT->addNewBlock(ThenBlock, Head);
    }
  }

  if (LI) {
    if (Loop *L = LI->getLoopFor(Head)) {
      L->addBasicBlockToLoop(ThenBlock, *LI);
      L->addBasicBlockToLoop(Tail, *LI);
    }
  }

  return CheckTerm;
}