8300109: RISC-V: Improve code generation for MinI/MaxI nodes

[DingliZhang]

Please review this backport to riscv-port-jdk17u.
Backport of JDK-8300109. Applies cleanly.

Testing:

• Tier1 passed without new failure on unmacthed (release).

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8300109: RISC-V: Improve code generation for MinI/MaxI nodes

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/riscv-port-jdk17u.git pull/25/head:pull/25
$ git checkout pull/25

Update a local copy of the PR:
$ git checkout pull/25
$ git pull https://git.openjdk.org/riscv-port-jdk17u.git pull/25/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 25

View PR using the GUI difftool:
$ git pr show -t 25

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/riscv-port-jdk17u/pull/25.diff

[bridgekeeper]

👋 Welcome back dzhang! A progress list of the required criteria for merging this PR into riscv-port 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 backport pull request has now been updated with issue from the original commit.

[openjdk]

@DingliZhang This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8300109: RISC-V: Improve code generation for MinI/MaxI nodes

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been no new commits pushed to the riscv-port branch. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you prefer to avoid any potential automatic rebasing, please check the documentation for the /integrate command for further details.

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➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[mlbridge]

Webrevs

• 00: Full (08b885d1)