8279225: [arm32] C1 longs comparison operation destroys argument registers

[shipilev]

Clean backport to fix ARM32 and get parity with 11.0.5-oracle.

Additional testing:

• java/math/BigDecimal/DivideMcTests.java with -XX:+TieredCompilation on ARM32 fails before the patch, passes with it

---

Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8279225: [arm32] C1 longs comparison operation destroys argument registers

Reviewing

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Checkout this PR locally:
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$ git checkout pull/743

Update a local copy of the PR:
$ git checkout pull/743
$ git pull https://git.openjdk.java.net/jdk11u-dev pull/743/head

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$ git pr checkout 743

View PR using the GUI difftool:
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https://git.openjdk.java.net/jdk11u-dev/pull/743.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:

8279225: [arm32] C1 longs comparison operation destroys argument registers

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 1 new commit pushed to the master branch:

• be7343d: 8277342: vmTestbase/nsk/stress/strace/strace004.java fails with SIGSEGV in InstanceKlass::jni_id_for

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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[mlbridge]

Webrevs

• 00: Full (44f2c357)

[shipilev]

Got the push approval.

/integrate

[openjdk]

Going to push as commit e1ee008.
Since your change was applied there have been 6 commits pushed to the master branch:

• 7e7043e: 8276623: JDK-8275650 accidentally pushed "out" file
• 914fb55: 8279379: GHA: Print tests that are in error
• a96e70c: 8275536: Add test to check that File::lastModified returns same time stamp as Files.getLastModifiedTime
• 2ccf515: 8274658: ISO 4217 Amendment 170 Update
• fb39476: 8239502: [TEST_BUG] Test javax/swing/text/FlowView/6318524/bug6318524.java never fails
• be7343d: 8277342: vmTestbase/nsk/stress/strace/strace004.java fails with SIGSEGV in InstanceKlass::jni_id_for

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit e1ee008.

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