RFR: 8289552: Make intrinsic conversions between bit representations of half precision values and floats [v5]

[Smita Kamath]

On Thu, 25 Aug 2022 03:15:52 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> Smita Kamath has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updated copyright comment
>
> src/hotspot/cpu/x86/x86_64.ad line 11330:
> 
>> 11328:   ins_pipe( pipe_slow );
>> 11329: %}
>> 11330: 
> 
> For HF2F, good to also add optimized rule with LoadS to benefit from vcvtph2ps memory src form of instruction.
> match(Set dst (ConvHF2F ( LoadS mem)));

Hi @sviswa7 , with this rule, I dont see additional performance gain. So I have not added it in the latest update.

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PR: https://git.openjdk.org/jdk/pull/9781