RFR: 8294588: Auto vectorize half precision floating point conversion APIs [v5]

[Smita Kamath]

On Tue, 6 Dec 2022 23:23:09 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Smita Kamath has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Addressed review comment
>
> src/hotspot/cpu/x86/vm_version_x86.cpp line 959:
> 
>> 957:     _features &= ~CPU_AVX;
>> 958:     _features &= ~CPU_VZEROUPPER;
>> 959:     _features &= ~CPU_F16C;
> 
> Is `is_knights_family()` supports `f16c`?  We switch off some avx512 features for it. But it looks like `f16c` is not connected to `avx512`.

Hi Vladimir, you're correct that f16c is not connected to avx512.

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PR: https://git.openjdk.org/jdk/pull/11471