RFR: 8376113: PPC64: Implement special MachNodes for floating point Min / Max

[Martin Doerr]

On Thu, 22 Jan 2026 14:27:12 GMT, David Briemann <dbriemann at openjdk.org> wrote:

> Add mach nodes MinF, MaxF, MinD, MaxD for PPC.

Please also test it on Power8 (or with -XX:PowerArchitecturePPC64=8). I think we need to add a check to `Matcher::match_rule_supported` like in x86.ad.

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PR Comment: https://git.openjdk.org/jdk/pull/29361#issuecomment-3784734862