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

[Xin Liu]

On Wed, 16 Dec 2020 18:38:37 GMT, Dan <github.com+7991079+danlemmond at openjdk.org> wrote:

> _break_at_compile is no longer in use and can be safely removed.
> No new code, and Tier1 tests succeed after code is removed.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8255216

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.

-------------

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