8295469: S390X: Optimized builds are broken

[shipilev]

Fixes S390X optimized builds.

Additional testing:

• Linux S390X {fastdebug, release, optimized} builds

---

Progress

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

Issue

• JDK-8295469: S390X: Optimized builds are broken

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev pull/1466/head:pull/1466
$ git checkout pull/1466

Update a local copy of the PR:
$ git checkout pull/1466
$ git pull https://git.openjdk.org/jdk11u-dev pull/1466/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1466

View PR using the GUI difftool:
$ git pr show -t 1466

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/1466.diff

[bridgekeeper]

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

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

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

8295469: S390X: Optimized builds are broken

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.

[mlbridge]

Webrevs

• 00: Full (25d30b7e)

[shipilev]

Got the push approval.

/integrate

[openjdk]

Going to push as commit 37d3bbd.
Since your change was applied there has been 1 commit pushed to the master branch:

• a2b2a22: 8288445: AArch64: C2 compilation fails with guarantee(!true || (true && (shift != 0))) failed: impossible encoding

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit 37d3bbd.

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