RFR: 8255216: ciEnv::_break_at_compile isn't in use

[Tobias Hartmann]

On Thu, 17 Dec 2020 18:35:53 GMT, Dan <github.com+7991079+danlemmond at openjdk.org> wrote:

>> src/hotspot/share/compiler/compileBroker.cpp line 2227:
>> 
>>> 2225:   }
>>> 2226: 
>>> 2227:   should_break = directive->BreakAtExecuteOption || task->check_break_at_flags();
>> 
>> CompileTask::check_break_at_flags is dead code too,  and CIBreakAtOSR, CIBreakAt
>> they are all defunct right now.
>
> I wasn't sure whether or not we wanted to roll the removal of all dead code into this issue or just _break_at_compile. The JBS issue specifically mentions _break_at_compile so that's what I removed here - can expand to do other stuff if you think it's a good idea.

I think it's fine to remove all that dead code with this issue

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PR: https://git.openjdk.java.net/jdk/pull/1806