8270533: AArch64: size_fits_all_mem_uses should return false if its output is a CAS

[apavlyutkin]

I'd like to backport JDK-8190753 to jdk15u.

The fix prevents using a result of Shift-n-Add operation as an input for CAS operation that takes only register operands for Aarch64

The original patch applied cleanly

Testing: original patch does not have verification tests. Regression: arm64 / 20.04 LTS / hotspot_all

---

Progress

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

Issue

• JDK-8270533: AArch64: size_fits_all_mem_uses should return false if its output is a CAS

Reviewers

• Andrew Haley (@theRealAph - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk15u-dev pull/128/head:pull/128
$ git checkout pull/128

Update a local copy of the PR:
$ git checkout pull/128
$ git pull https://git.openjdk.java.net/jdk15u-dev pull/128/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 128

View PR using the GUI difftool:
$ git pr show -t 128

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk15u-dev/pull/128.diff

[apavlyutkin]

/covered

[bridgekeeper]

👋 Welcome back apavlyutkin! 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.

[bridgekeeper]

You are already a known contributor!

[openjdk]

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

[openjdk]

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

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

8270533: AArch64: size_fits_all_mem_uses should return false if its output is a CAS

Reviewed-by: aph

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 41 new commits pushed to the master branch:

• 76109b5: 8275766: (tz) Update Timezone Data to 2021e
• 48f53ef: 8266949: Check possibility to disable OperationTimedOut on Unix
• d17731b: 8260589: Crash in JfrTraceIdLoadBarrier::load(_jclass*)
• 87f3b0e: 8196100: javax/swing/text/JTextComponent/5074573/bug5074573.java fails
• 8716863: 8273790: Potential cyclic dependencies between Gregorian and CalendarSystem
• b056995: 8253421: Initialize JFR trace-IDs with zero
• 8719fc4: 8270893: IndexOutOfBoundsException while reading large TIFF file
• ca60952: 8274779: HttpURLConnection: HttpClient and HttpsClient incorrectly check request method when set to POST
• d38d207: 8190753: (zipfs): Accessing a large entry (> 2^31 bytes) leads to a negative initial size for ByteArrayOutputStream
• 0e6a183: 8274407: (tz) Update Timezone Data to 2021c
• ... and 31 more: https://git.openjdk.java.net/jdk15u-dev/compare/ade1c31fe3e3e2e26f6b987d506456e3101f7231...master

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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change. Possible candidates are the reviewers of this PR (@theRealAph) but any other Committer may sponsor as well.

➡️ 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 (72a33117)

[apavlyutkin]

/integrate

[openjdk]

@apavlyutkin
Your change (at version 72a3311) is now ready to be sponsored by a Committer.

[yan-too]

/sponsor

[openjdk]

Going to push as commit c234390.
Since your change was applied there have been 42 commits pushed to the master branch:

• 4753c72: 8273826: Correct Manifest file name and NPE checks
• 76109b5: 8275766: (tz) Update Timezone Data to 2021e
• 48f53ef: 8266949: Check possibility to disable OperationTimedOut on Unix
• d17731b: 8260589: Crash in JfrTraceIdLoadBarrier::load(_jclass*)
• 87f3b0e: 8196100: javax/swing/text/JTextComponent/5074573/bug5074573.java fails
• 8716863: 8273790: Potential cyclic dependencies between Gregorian and CalendarSystem
• b056995: 8253421: Initialize JFR trace-IDs with zero
• 8719fc4: 8270893: IndexOutOfBoundsException while reading large TIFF file
• ca60952: 8274779: HttpURLConnection: HttpClient and HttpsClient incorrectly check request method when set to POST
• d38d207: 8190753: (zipfs): Accessing a large entry (> 2^31 bytes) leads to a negative initial size for ByteArrayOutputStream
• ... and 32 more: https://git.openjdk.java.net/jdk15u-dev/compare/ade1c31fe3e3e2e26f6b987d506456e3101f7231...master

Your commit was automatically rebased without conflicts.

[openjdk]

@yan-too @apavlyutkin Pushed as commit c234390.

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