RFR: 8349138: Optimize Math.copySign API for Intel e-core targets [v2]

[Jatin Bhateja]

On Sat, 1 Feb 2025 22:19:57 GMT, Jasmine Karthikeyan <jkarthikeyan at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Adding IR framework verification test
>
> src/hotspot/cpu/x86/x86.ad line 6769:
> 
>> 6767: 
>> 6768: instruct copySignF_reg_avx(regF dst, regF src, regF xtmp1, regF xtmp2) %{
>> 6769:   predicate(!VM_Version::supports_avx512vl());
> 
> Suggestion:
> 
>   predicate(UseAVX > 0 && !VM_Version::supports_avx512vl());
> 
> Just to be a bit more explicit (and same for the one below).

Its already handled by match_rule_supported contraint.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23386#discussion_r1939268134