RFR: 8280126: C2: detect and remove dead irreducible loops [v2]

Thu Jan 12 10:34:17 UTC 2023

On Wed, 11 Jan 2023 18:01:47 GMT, Vladimir Kozlov <kvn 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 two additional commits since the last revision:
>> 
>>  - Merge branch 'master' into JDK-8280126
>>  - 8280126: C2: detect and remove dead irreducible loops
>
> src/hotspot/share/opto/loopnode.cpp line 5280:
> 
>> 5278:           region->loop_status() == RegionNode::LoopStatus::Reducible) {
>> 5279:         failure = true;
>> 5280: #ifdef ASSERT
> 
> No need this.

👍

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

PR: https://git.openjdk.org/jdk/pull/11764