RFR: 8341976: C2: use_mem_state != load->find_exact_control(load->in(0)) assert failure [v7]

[Roland Westrelin]

On Wed, 2 Apr 2025 07:23:49 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Roland Westrelin 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 16 additional commits since the last revision:
>> 
>>  - review
>>  - Merge branch 'master' into JDK-8341976
>>  - review
>>  - review
>>  - Merge branch 'master' into JDK-8341976
>>  - -XX:+TraceLoopOpts fix
>>  - review
>>  - more
>>  -  Merge branch 'master' into JDK-8341976
>>  - more
>>  - ... and 6 more: https://git.openjdk.org/jdk/compare/90c6006f...9b21648d
>
> test/hotspot/jtreg/compiler/arraycopy/TestSunkLoadAntiDependency.java line 28:
> 
>> 26:  * @bug 8341976
>> 27:  * @summary C2: use_mem_state != load->find_exact_control(load->in(0)) assert failure
>> 28:  * @run main/othervm -XX:-BackgroundCompilation TestSunkLoadAntiDependency
> 
> Would it make sense to have a run without any flags?

@eme64 I made that change in new commit

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PR Review Comment: https://git.openjdk.org/jdk/pull/23465#discussion_r2027128101