8280872: Reorder code cache segments to improve code density

[eastig]

A backport of reordering code cache segments from
[non-nmethod, non-profiled, profiled]
to
[profiled, non-nmethod, non-profiled]

AArch64 limits branch ranges to 128MB. Far jumps uses three instructions.
With the new order the aarch64 backend does not need far jumps to non-nmethods
for CodeCache sizes from 128M to 240MB.

The risk of changes is low. It only causes generated code reduction.

Tested with fastdebug and release builds:

• gtest: Passed
• tier1: Passed
• tier2: Passed

---

Progress

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

Issue

• JDK-8280872: Reorder code cache segments to improve code density

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev pull/743/head:pull/743
$ git checkout pull/743

Update a local copy of the PR:
$ git checkout pull/743
$ git pull https://git.openjdk.org/jdk17u-dev pull/743/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 743

View PR using the GUI difftool:
$ git pr show -t 743

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk17u-dev/pull/743.diff

[bridgekeeper]

👋 Welcome back eastigeevich! 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.

[openjdk]

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

[mlbridge]

Webrevs

• 00: Full (81862329)

[openjdk]

@eastig 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:

8280872: Reorder code cache segments to improve code density

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 51 new commits pushed to the master branch:

• d7a3a9e: 8284752: Zero does not build on Mac OS X due to missing os::current_thread_enable_wx implementation
• b38b6d5: 8222323: ChildAlwaysOnTopTest.java fails with "RuntimeException: Failed to unset alwaysOnTop"
• 62eb5ae: 8293826: Closed test fails after JDK-8276108 on aarch64
• eea78cf: 6829250: Reg test: java/awt/Toolkit/ScreenInsetsTest/ScreenInsetsTest.java fails in Windows
• 2fbc5cb: 8290711: assert(false) failed: infinite loop in PhaseIterGVN::optimize
• 51107ab: 8257722: Improve "keytool -printcert -jarfile" output
• 6624f71: 8292586: simplify cleanups in NTLMAuthSequence getCredentialsHandle
• ce949ba: 8276904: Optional.toString() is unnecessarily expensive
• ca8e16d: 8284732: FFI_GO_CLOSURES macro not defined but required for zero build on Mac OS X
• 0657a3a: 8280511: AArch64: Combine shift and negate to a single instruction
• ... and 41 more: https://git.openjdk.org/jdk17u-dev/compare/0c551b6c01bed302a2fbd1271773c3e231920ddd...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.

➡️ 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).

[eastig]

/integrate

[openjdk]

@eastig
Your change (at version 8186232) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit d4d2e34.
Since your change was applied there have been 51 commits pushed to the master branch:

• d7a3a9e: 8284752: Zero does not build on Mac OS X due to missing os::current_thread_enable_wx implementation
• b38b6d5: 8222323: ChildAlwaysOnTopTest.java fails with "RuntimeException: Failed to unset alwaysOnTop"
• 62eb5ae: 8293826: Closed test fails after JDK-8276108 on aarch64
• eea78cf: 6829250: Reg test: java/awt/Toolkit/ScreenInsetsTest/ScreenInsetsTest.java fails in Windows
• 2fbc5cb: 8290711: assert(false) failed: infinite loop in PhaseIterGVN::optimize
• 51107ab: 8257722: Improve "keytool -printcert -jarfile" output
• 6624f71: 8292586: simplify cleanups in NTLMAuthSequence getCredentialsHandle
• ce949ba: 8276904: Optional.toString() is unnecessarily expensive
• ca8e16d: 8284732: FFI_GO_CLOSURES macro not defined but required for zero build on Mac OS X
• 0657a3a: 8280511: AArch64: Combine shift and negate to a single instruction
• ... and 41 more: https://git.openjdk.org/jdk17u-dev/compare/0c551b6c01bed302a2fbd1271773c3e231920ddd...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @eastig Pushed as commit d4d2e34.

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