RFR: 8350940: RISC-V: remove unnecessary assert_different_registers in minmax_fp [v2]

[Hamlin Li]

> Hi,
> Can you help to review this simple change?
> Seems to me it's not necessary to assert_different_registers between dst/src1/src2 in minmax_fp.
> 
> Thanks

Hamlin Li has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:

 - merge master
 - initial commit

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Changes: https://git.openjdk.org/jdk/pull/23842/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23842&range=01
  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/23842.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23842/head:pull/23842

PR: https://git.openjdk.org/jdk/pull/23842