207   BasicBlock* new_header = bb->SplitBasicBlock(context, new_header_id, iter);  in SplitLoopHeader()  local
208   context->AnalyzeDefUse(new_header->GetLabelInst());  in SplitLoopHeader()
211   RegisterBlock(new_header);  in SplitLoopHeader()
214   context->set_instr_block(new_header->GetLabelInst(), new_header);  in SplitLoopHeader()
215   new_header->ForEachInst([new_header, context](Instruction* inst) {  in SplitLoopHeader()
216     context->set_instr_block(inst, new_header);  in SplitLoopHeader()
220   bb->ForEachPhiInst([latch_block, bb, new_header, context](Instruction* phi) {  in SplitLoopHeader()
260     new_header->begin()->InsertBefore(std::move(phi_owner));  in SplitLoopHeader()
261     context->set_instr_block(phi, new_header);  in SplitLoopHeader()
272                                   {SPV_OPERAND_TYPE_ID, {new_header->id()}}}));  in SplitLoopHeader()
275   label2preds_[new_header->id()].push_back(bb->id());  in SplitLoopHeader()
285   label2preds_[new_header->id()].push_back(latch_block->id());  in SplitLoopHeader()
299     loop->SetHeaderBlock(new_header);  in SplitLoopHeader()
313   return new_header;  in SplitLoopHeader()