RFR: 8375536: PPC64: Implement special MachNodes for floating point CMove [v5]

[Richard Reingruber]

On Fri, 30 Jan 2026 08:22:47 GMT, David Briemann <dbriemann at openjdk.org> wrote:

> > Very nice and clean now. Thanks for putting the work into it. Cheers, Richard.
> 
> Thank you @reinrich for your very thorough review. I didn't find a way to use $$cop$constant on PPC but the code now should be much better to understand.

I think it doesn't work. Not even on aarch64. It translates to a virtual call of `MachOper::constant()` but adlc does not seem to override the method for `Bool` operands. Anyways, thanks for trying :)

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PR Comment: https://git.openjdk.org/jdk/pull/29281#issuecomment-3822692292