8371920: [TEST] Enable CMove tests on other platforms

[Hamlin-Li]

Hi,
Can you help to review this patch?

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 #28309 (comment).

Thanks!

Test

In progress... (I'm using github CI to run the tests.)

---

Progress

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Issue

• JDK-8371920: [TEST] Enable CMove tests on other platforms (Enhancement - P4)

Reviewing

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