16   else_environment_ = environment()->CopyForConditional();  in If()
25   then_environment_ = environment();  in Else()
32   then_environment_->Merge(environment());  in End()
38   loop_environment_ = environment()->CopyForLoop(assigned, is_osr);  in BeginLoop()
39   continue_environment_ = environment()->CopyAsUnreachable();  in BeginLoop()
40   break_environment_ = environment()->CopyAsUnreachable();  in BeginLoop()
46   continue_environment_->Merge(environment());  in Continue()
47   environment()->MarkAsUnreachable();  in Continue()
52   break_environment_->Merge(environment());  in Break()
53   environment()->MarkAsUnreachable();  in Break()
58   continue_environment_->Merge(environment());  in EndBody()
64   loop_environment_->Merge(environment());  in EndLoop()
91     environment()->Push(*extra_value_to_rename);  in ExitLoop()
93   environment()->PrepareForLoopExit(loop_environment_->GetControlDependency(),  in ExitLoop()
96     *extra_value_to_rename = environment()->Pop();  in ExitLoop()
101   body_environment_ = environment()->CopyAsUnreachable();  in BeginSwitch()
102   label_environment_ = environment()->CopyAsUnreachable();  in BeginSwitch()
103   break_environment_ = environment()->CopyAsUnreachable();  in BeginSwitch()
109   label_environment_ = environment()->CopyForConditional();  in BeginLabel()
111   body_environments_[index] = environment();  in BeginLabel()
122   label_environment_ = environment()->CopyAsUnreachable();  in DefaultAt()
123   body_environments_[index] = environment();  in DefaultAt()
129   environment()->Merge(body_environment_);  in BeginCase()
134   break_environment_->Merge(environment());  in Break()
135   environment()->MarkAsUnreachable();  in Break()
139 void SwitchBuilder::EndCase() { body_environment_ = environment(); }  in EndCase()
144   break_environment_->Merge(environment());  in EndSwitch()
150   break_environment_ = environment()->CopyAsUnreachable();  in BeginBlock()
155   break_environment_->Merge(environment());  in Break()
156   environment()->MarkAsUnreachable();  in Break()
181   break_environment_->Merge(environment());  in EndBlock()