RFR: 8352635: Improve inferencing of Float16 operations with constant inputs [v5]

[Jatin Bhateja]

On Wed, 11 Jun 2025 14:15:00 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Suggestion:
>> Suggestion:
>> 
>>       // 1. conF must lie within Float16 value range, otherwise we would have rounding issues:
>>       //    Doing the operation in float32 and then rounding is not the same as
>>       //    rounding first and doing the operation in float16.
>
> Do you have tests where the constant is in float16? Which one?

We have a test point "testExactFP16ConstantPatterns" for in-range constants
https://github.com/openjdk/jdk/pull/24179/files#diff-3f8786f9f62662eda4b4a5c76c01fa04534c94d870d496501bfc20434ad45579R405

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PR Review Comment: https://git.openjdk.org/jdk/pull/24179#discussion_r2144880546