RFR: 8351645: C2: Assertion failures in Expand/CompressBits idealizations with TOP [v2]

[Emanuel Peter]

On Wed, 11 Jun 2025 10:22:13 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> Bugfix patch adds missing safe type access checks in Expand/Compress Ideal transforms. Problem occues during IGVN cleanups after partial peeling of loop.
>> 
>> Test mentioned in the bug report has been included along with the patch.
>> 
>> Kindly review.
>> 
>> Best Regards,
>> Jatin
>
> Jatin Bhateja has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:
> 
>   8351645: C2: ExpandBitsNode::Ideal hits assert because of TOP input

@jatin-bhateja Thanks for the ping! The tests are all passing, perfect :)

Thank you for your work, approved!

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

Marked as reviewed by epeter (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25586#pullrequestreview-2930750944