RFR: 8350835: C2 SuperWord: assert/wrong result when using Float.float16ToFloat with byte instead of short input [v2]

[Sandhya Viswanathan]

On Thu, 13 Mar 2025 07:37:17 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Sandhya Viswanathan has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   review comments
>
> test/hotspot/jtreg/compiler/vectorization/TestFloat16ToFloatConv.java line 113:
> 
>> 111: 
>> 112:     @Test
>> 113:     // Not vectorized due to JDK-8350835
> 
> That's very non-descriptive. Actually, that is the current bug, so this is not even a future RFE that intends to fix it.
> Can you please say why it is not vectorizing now, and what might be possible conditions when it would be ok to vectorize in the future? Could we even file an RFE for this?

Added descriptive comments. RFE filed at https://bugs.openjdk.org/browse/JDK-8352093.

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

PR Review Comment: https://git.openjdk.org/jdk/pull/23939#discussion_r1996470360