RFR: 8344355: Register corruption in MacroAssembler::lookup_secondary_supers_table_var: x86-64 only [v2]

Tue Nov 26 19:26:42 UTC 2024

On Tue, 26 Nov 2024 11:00:18 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> This bug only affects x86-64 machines without a `popcnt` instruction, which basically means pre-SSE4.2 machines. This means that x86-64 processors made around 2010 are affected.
>> 
>> My thanks to everyone who was was involved in bisecting this, particularly Martin Bucholz who seems to be the only one testing on such old hardware.
>
> Andrew Haley has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8344355: Register corruption in MacroAssembler::lookup_secondary_supers_table_var: x86-64 only

Marked as reviewed by vlivanov (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/22365#pullrequestreview-2462500134