RFR: 8285973: x86_64: Improve fp comparison and cmove for eq/ne [v2]

Fri May 20 22:52:47 UTC 2022

On Fri, 20 May 2022 22:22:43 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> I see that you swapped `src, dst` in `match()` but `format` is sill incorrect and the code is confusing.
>
> I agree with @vnkozlov that this needs explanation. Could you please add comments here with IR and example code generated for both the eq case and ne case? You have some explanation in the PR description but not in the code. The description needs to be in the code as well for maintenance.

Right, I missed that. Then you can use `expand %{` to avoid duplication (keep format).

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PR: https://git.openjdk.java.net/jdk/pull/8525