RFR: 8369448: C2 SuperWord: refactor VTransform to do move_unordered_reduction_out_of_loop during VTransform::optimize [v6]

[Emanuel Peter]

On Mon, 13 Oct 2025 13:10:56 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Emanuel Peter 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 15 additional commits since the last revision:
>> 
>>  - Merge branch 'master' into JDK-8369448-VTransform-reduction-out-of-loop
>>  - prettify code
>>  - for Christian part 3
>>  - for Christian part 2
>>  - for Christian part 1
>>  - For Vladimir K7
>>  - documentation
>>  - better tracing
>>  - rm scalar_opcode
>>  - a few todos
>>  - ... and 5 more: https://git.openjdk.org/jdk/compare/b928c84e...5c0e11a5
>
> Update looks good, thanks for carefully addressing my suggestions and the offline discussion! And good work to finally getting to the cost model PR next :-)

@chhagedorn Thanks for the review and comments! I merged with master, and will do a last round of testing before integration.

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PR Comment: https://git.openjdk.org/jdk/pull/27704#issuecomment-3397651409