RFR: 8373633: C2: Use interface receiver type to improve CHA decisions [v2]

[Vladimir Ivanov]

On Mon, 15 Dec 2025 16:25:00 GMT, Roland Westrelin <roland at openjdk.org> wrote:

>> Vladimir Ivanov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
>> 
>>  - addtional case
>>  - Merge branch 'master' into cha.intf.recv
>>  - Use receiver type to improve CHA decisions
>
> src/hotspot/share/opto/callGenerator.cpp line 529:
> 
>> 527:                                         allow_inline,
>> 528:                                         _prof_factor,
>> 529:                                         nullptr /*receiver_type*/,
> 
> Is there no benefit to passing `receiver_type` here?

Good point. After thinking more about it, I see some corner cases when it may be useful. Fixed.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/28811#discussion_r2733978428