RFR: 8325438: Add exhaustive tests for Math.round intrinsics [v9]

[Hamlin Li]

On Tue, 9 Apr 2024 08:53:56 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> If it takes longer than a few seconds, there's something wrong with your computer or your compiler. It's only 4G tests. I get
>> 
>> 
>>           6,255.47 msec task-clock:u                     #    1.057 CPUs utilized             
>>     19,681,407,235      cycles:u                         #    3.146 GHz                         (95.55%)
>>    110,397,691,854      instructions:u                   #    5.61  insn per cycle              (95.55%)
>
> Ah, maybe you're right, I was using qemu for arm test.
> Let me try it later on a real arm machine later.

An update, I ran a modified Float test on a AWS `c7gn.2xlarge` EC2 instance (with 8 vCPU, 16G mem), and it tooks more than 20 minutes to finish. So it seems too long for an automatic test?

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PR Review Comment: https://git.openjdk.org/jdk/pull/17753#discussion_r1557635552