8357551: RISC-V: support CMoveF/D vectorization

[Hamlin-Li]

Previous one: #25341
check also: #28231

Test

Jtreg

in progress...

Performance

check the performance data in #25341 on riscv.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8357551: RISC-V: support CMoveF/D vectorization (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/28230/head:pull/28230
$ git checkout pull/28230

Update a local copy of the PR:
$ git checkout pull/28230
$ git pull https://git.openjdk.org/jdk.git pull/28230/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 28230

View PR using the GUI difftool:
$ git pr show -t 28230

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/28230.diff

[bridgekeeper]

👋 Welcome back mli! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

⚠️ @Hamlin-Li This pull request contains merges that bring in commits not present in the target repository. Since this is not a "merge style" pull request, these changes will be squashed when this pull request in integrated. If this is your intention, then please ignore this message. If you want to preserve the commit structure, you must change the title of this pull request to Merge <project>:<branch> where <project> is the name of another project in the OpenJDK organization (for example Merge jdk:master).

[openjdk]

@Hamlin-Li The following labels will be automatically applied to this pull request:

• core-libs
• hotspot

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing lists. If you would like to change these labels, use the /label pull request command.