RFR: 8371920: [TEST] Enable CMove tests on other platforms [v2]

[Hamlin Li]

> Hi,
> Can you help to review this patch?
> 
> [JDK-8357551](https://bugs.openjdk.org/browse/JDK-8357551) add support of CMoveF/D vectorization, at the same time it also adds some tests for scalar CMove on riscv.
> It's good to enable these tests on other platforms, like x86/aarch64 or maybe others.
> 
> At the same time, this pr also move these tests under `compiler/c2/cmove`, as suggested here https://github.com/openjdk/jdk/pull/28309#discussion_r2598664764.
> 
> Thanks!
> 
> ## Test
> In progress... (I'm using github CI to run the tests.)

Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:

  riscv + aarch64

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28702/files
  - new: https://git.openjdk.org/jdk/pull/28702/files/c901dece..7848a1bf

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28702&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28702&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28702.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28702/head:pull/28702

PR: https://git.openjdk.org/jdk/pull/28702