RFR: 8286104: use aggressive liveness for unstable_if traps [v12]

[Xin Liu]

On Mon, 20 Jun 2022 07:29:27 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Xin Liu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   monior change for code style.
>
> src/hotspot/share/opto/parse.hpp line 607:
> 
>> 605: 
>> 606: // Specialized uncommon_trap of unstable_if, we have 2 optimizations for them:
>> 607: //   1. suppress trivial Unstable_If traps
> 
> Where is this done?

hi, @TobiHartmann 
Could you take a look at the new revision?  the 2nd PR is based on the first one.
https://urldefense.com/v3/__https://github.com/openjdk/jdk/pull/9255__;!!ACWV5N9M2RV99hQ!LsM4Xnz01EfZZLEjD_bZiPrQOghESj6aOlkKL50y4RDmAzf2Qsr5z9SYq6IccJ5lgvh67fRh_LBbdb5Rmt7vu-3jMJU$ 

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PR: https://git.openjdk.org/jdk/pull/8545