RFR: 8287835: Add support for additional float/double to integral conversion for x86 [v2]

[Sandhya Viswanathan]

On Mon, 6 Jun 2022 19:04:56 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Sandhya Viswanathan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Review comments resolution and cleanup
>
> src/hotspot/cpu/x86/x86.ad line 1871:
> 
>> 1869:       break;
>> 1870:     case Op_VectorCastD2X:
>> 1871:       if (((UseAVX <= 2) || (!VM_Version::supports_avx512vl())) &&
> 
> Which asm instructions are required avx512vl? I don't see asserts in `assembler_x86.cpp`

avx512vl support is needed only for vectors < 512 bit. I have corrected this in the predicate.

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