8209380: ARM: cleanup maybe-uninitialized and reorder compiler warnings

[RealCLanger]

Please review the backport of JDK-8209380. It is another prereq to get the upcoming GitHub Actions workflow green. The patch applies cleanly and follow up JDK-8209193 is already in 11u.
If it weren't integrated, the GHA crossbuild of hotspot for arm would fail.

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Progress

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

Issue

• JDK-8209380: ARM: cleanup maybe-uninitialized and reorder compiler warnings

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk11u-dev pull/186/head:pull/186
$ git checkout pull/186

Update a local copy of the PR:
$ git checkout pull/186
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/186/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 186

View PR using the GUI difftool:
$ git pr show -t 186

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk11u-dev/pull/186.diff

[bridgekeeper]

👋 Welcome back clanger! A progress list of the required criteria for merging this PR into pr/185 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.

[mlbridge]

Webrevs

• 01: Full - Incremental (46d2c8b3)
• 00: Full (a62c240e)

[openjdk-notifier]

The dependent pull request has now been integrated, and the target branch of this pull request has been updated. This means that changes from the dependent pull request can start to show up as belonging to this pull request, which may be confusing for reviewers. To remedy this situation, simply merge the latest changes from the new target branch into this pull request by running commands similar to these in the local repository for your personal fork:

git checkout 8257913
git fetch https://git.openjdk.java.net/jdk11u-dev master
git merge FETCH_HEAD
# if there are conflicts, follow the instructions given by git merge
git commit -m "Merge master"
git push

[openjdk]

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

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

8209380: ARM: cleanup maybe-uninitialized and reorder compiler warnings

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 master 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.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[RealCLanger]

/integrate

[openjdk]

Going to push as commit 90d30cc.

[openjdk]

@RealCLanger Pushed as commit 90d30cc.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.