RFR: 8255216: Change _directive->BreakAtCompileOption to env()->break_at_compile() [v6]

[Vladimir Kozlov]

On Thu, 21 Jan 2021 07:56:14 GMT, Dan <github.com+7991079+danlemmond at openjdk.org> wrote:

>> _break_at_compile was no longer in use after changes to compile.cpp.
>> Change compile.cpp and c1_Compilation.cpp to use env()->break_at_compile() instead
>> to make that code no longer dead.
>> No new code, and Tier1 tests succeed after code is removed.
>> 
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8255216
>
> Dan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove additional _directive->BreakAtCompileOption calls
>   
>   Repurpose to env()->break_at_compile()

Good.

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Marked as reviewed by kvn (Reviewer).

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