Integrated: 8370519: C2: Hit MemLimit when running with +VerifyLoopOptimizations

[Roland Westrelin]

On Mon, 1 Dec 2025 15:40:00 GMT, Roland Westrelin <roland at openjdk.org> wrote:

> For this failure memory stats are:
> 
> 
> Total Usage: 1095525816 
>     --- Arena Usage by Arena Type and compilation phase, at arena usage peak of 1095525816 ---
>         Phase                         Total        ra      node      comp      type    states   reglive  regsplit   regmask superword     cienv        ha     other
>         none                        5976032    331560   5402064    197512     33712     10200         0         0       984         0         0         0         0
>         parse                       2716464     65456   1145480    196408   1112752         0         0         0         0         0    196368         0         0
>         optimizer                     98184         0     32728         0     65456         0         0         0         0         0         0         0         0
>         connectionGraph               32728         0         0     32728         0         0         0         0         0         0         0         0         0
>         iterGVN                       32728         0     32728         0         0         0         0         0         0         0         0         0         0
>         idealLoop                 918189632         0  38687056 872824784    392776         0         0         0         0         0   6285016         0         0
>         idealLoopVerify             2228144         0         0   2228144         0         0         0         0         0         0         0         0         0
>         macroExpand                   32728         0     32728         0         0         0         0         0         0         0         0         0         0
>         graphReshape                  32728         0     32728         0         0         0         0         0         0         0         0         0         0
>         matcher                    20135944   3369848   9033208   7536400     65456    131032         0         0         0         0         0         0         0
>         postselect_cleanup           294872    294872         0         0         0         0         0         0         0         0         0         0         0
>         scheduler                    752944    196488    556456         0         0         0         0         0         0         0         0         0         0
>         regalloc                     388736    388736         0         0         0         0         0         0         0         0         0         0         0
>         ctorChaitin                  160032    ...

This pull request has now been integrated.

Changeset: 176422b8
Author:    Roland Westrelin <roland at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/176422b885d2d045dd44b61b7fcdcb01be2d00a7
Stats:     171 lines in 4 files changed: 147 ins; 14 del; 10 mod

8370519: C2: Hit MemLimit when running with +VerifyLoopOptimizations

Co-authored-by: Benoît Maillard <bmaillard at openjdk.org>
Reviewed-by: mhaessig, bmaillard, epeter

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PR: https://git.openjdk.org/jdk/pull/28581