RFR: 8323429: Missing C2 optimization for FP min/max when both inputs are same [v2]

[Galder Zamarreño]

On Tue, 16 Apr 2024 06:56:57 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Galder Zamarreño has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Small IR test fixes
>>   
>>   * Fixed bug ID number.
>>   * Added test summary.
>>   * Removed unnecessary @requires.
>>   * Added @Check methods to verify optimizations return the expected result.
>
> Thanks for the update, looks good! I'll submit some testing.

@chhagedorn I've made the `failOn` change and pushed a commit.

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PR Comment: https://git.openjdk.org/jdk/pull/18738#issuecomment-2061001578