RFR: 8287835: Add support for additional float/double to integral conversion for x86 [v3]

[Sandhya Viswanathan]

On Sun, 5 Jun 2022 01:44:34 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Sandhya Viswanathan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   cleanup predicate for f2x
>
> I assume it is support for "vector conversion".
> 
> Please, add IR framework test.

@vnkozlov I have implemented your review comments. The only item remaining is to add IR framework test.

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PR: https://git.openjdk.java.net/jdk/pull/9032