RFR: 8289552: Make intrinsic conversions between bit representations of half precision values and floats [v11]

[Quan Anh Mai]

On Fri, 30 Sep 2022 10:04:34 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

>> Smita Kamath has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Addressed review comment to update test case
>
> src/hotspot/cpu/x86/x86.ad line 3674:
> 
>> 3672: %}
>> 3673: 
>> 3674: instruct convF2HF_mem_reg(memory mem, regF src, kReg ktmp, rRegI rtmp) %{
> 
> You can use `kmovwl` instead which will relax the avx512bw constraint, however, you will need avx512vl for `evcvtps2ph`. Thanks.

Rethink about it, you can get 0x01 by right shifting k0 to the right - `kshiftrw(ktmp, k0, 15)`

-------------

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