lib/CodeGen/CodeGenFunction.cpp

145     if (CurBB->empty() || ReturnBlock.getBlock()->use_empty()) {
146       ReturnBlock.getBlock()->replaceAllUsesWith(CurBB);
147       delete ReturnBlock.getBlock();
149       EmitBlock(ReturnBlock.getBlock());
156   if (ReturnBlock.getBlock()->hasOneUse()) {
158       dyn_cast<llvm::BranchInst>(*ReturnBlock.getBlock()->use_begin());
160         BI->getSuccessor(0) == ReturnBlock.getBlock()) {
168       delete ReturnBlock.getBlock();
177   EmitBlock(ReturnBlock.getBlock());
1089   llvm::BasicBlock *BB = getJumpDestForLabel(L).getBlock();