RFR: 8347422: Crash during safepoint handler execution with -XX:+UseAPX [v2]

[Sandhya Viswanathan]

On Fri, 17 Jan 2025 02:32:08 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> This bug fix patch fixes an internal error seen during safepoint handler execution.
>> The problem occurs due to missing handling for REX2 prefixed polling test instruction.
>> 
>> Manually verified the patch with the -XX:+SafepointALot runtime flag.
>> 
>> Best Regards,
>> Jatin
>> PS: Patch will be opened for review after some validation.
>
> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review comments resolution.

LGTM

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Marked as reviewed by sviswanathan (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/23035#pullrequestreview-2559407294