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

[Sandhya Viswanathan]

On Mon, 6 Jun 2022 22:15:44 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
>
> Looks good. Will wait IR test before testing and approval.

@vnkozlov I have added the IR framework test case. Please take a look.

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