29   for (auto bi = func->begin(); bi != func->end();) {  in MergeBlocks()  local
31     auto ii = bi->end();  in MergeBlocks()
35       ++bi;  in MergeBlocks()
41       ++bi;  in MergeBlocks()
45     bool pred_is_merge = IsMerge(&*bi);  in MergeBlocks()
49       ++bi;  in MergeBlocks()
53     Instruction* merge_inst = bi->GetMergeInst();  in MergeBlocks()
54     bool pred_is_header = IsHeader(&*bi);  in MergeBlocks()
60         ++bi;  in MergeBlocks()
74         ++bi;  in MergeBlocks()
81     auto sbi = bi;  in MergeBlocks()
90       context()->set_instr_block(&inst, &*bi);  in MergeBlocks()
94     bi->AddInstructions(&*sbi);  in MergeBlocks()
103         merge_inst->InsertBefore(bi->terminator());  in MergeBlocks()
106     context()->ReplaceAllUsesWith(lab_id, bi->id());  in MergeBlocks()