Method ShouldSplitLoop

source/opt/loop_fission.cpp:444–453

}

bool LoopFissionPass::ShouldSplitLoop(const Loop& loop, IRContext* c) {
  LivenessAnalysis* analysis = c->GetLivenessAnalysis();

  RegisterLiveness::RegionRegisterLiveness liveness{};

  Function* function = loop.GetHeaderBlock()->GetParent();
  analysis->Get(function)->ComputeLoopRegisterPressure(loop, &liveness);

  return split_criteria_(liveness);
}

Pass::Status LoopFissionPass::Process() {
  bool changed = false;