8255026: C2: Miscellaneous cleanups in Compile and PhaseIdealLoop code

[iwanowww]

Miscellaneous cleanups in Compile and PhaseIdealLoop code.

Compile:

• inline node lists

• remove empty Compile::register_library_intrinsics()

• introduce Compile::remove_useless_nodes(GrowableArray<Node*>& node_list, Unique_Node_List& useful)

PhaseIdealLoop:

• unify logging and IGVN logic

• refactor logging code

Testing: tier1 - tier5

---

Progress

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

Testing

	Linux x64	Windows x64	macOS x64
Build	✔️ (5/5 passed)	✔️ (2/2 passed)	✔️ (2/2 passed)
Test (tier1)	✔️ (9/9 passed)	✔️ (9/9 passed)	✔️ (9/9 passed)

Issue

• JDK-8255026: C2: Miscellaneous cleanups in Compile and PhaseIdealLoop code

Reviewers

• Tobias Hartmann (@TobiHartmann - Reviewer)
• Nils Eliasson (@neliasso - Reviewer)
• Claes Redestad (@cl4es - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/749/head:pull/749
$ git checkout pull/749

[bridgekeeper]

👋 Welcome back vlivanov! 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]

@iwanowww The following label will be automatically applied to this pull request:

• hotspot-compiler

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[mlbridge]

Webrevs

• 00: Full (ae259d5)

[TobiHartmann]

Nice cleanup! Looks good to me.

[openjdk]

@iwanowww 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:

8255026: C2: Miscellaneous cleanups in Compile and PhaseIdealLoop code

Reviewed-by: thartmann, neliasso, redestad

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 26 new commits pushed to the master branch:

• 294e070: 8254998: C2: assert(!n->as_Loop()->is_transformed_long_loop()) failure with -XX:StressLongCountedLoop=1
• 3ee0380: 8234393: [macos] printing ignores printer tray
• 3f9c8a3: 8254966: Remove unused code from Matcher
• 21e67e5: 8225790: Two NestedDialogs tests fail on Ubuntu
• 017d151: 8254842: [JVMCI] copy thread name when attaching libgraal thread to HotSpot
• 5d1397f: 8254282: Add Linux x86_32 builds to submit workflow
• 7ba6a6b: 8251158: Implementation of JEP 387: Elastic Metaspace
• 5fedfa7: 8251271: C2: Compile::_for_igvn list is corrupted after RenumberLiveNodes
• 98ec4a6: 8254805: compiler/debug/TestStressCM.java is still failing
• 355f44d: 8254994: [x86] C1 StubAssembler::call_RT, "call_offset might not be initialized"
• ... and 16 more: https://git.openjdk.java.net/jdk/compare/60f63ec811d834d9f1a7468a5552ffa12568b765...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.

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

[neliasso]

Looks good.

[iwanowww]

Thanks for the reviews, Tobias, Nils, and Claes.

[iwanowww]

/integrate

[openjdk]

@iwanowww Since your change was applied there have been 71 commits pushed to the master branch:

• c107178: 8253964: [Graal] UnschedulableGraphTest#test01fails with expected:<4> but was:<3>
• bd45191: 8255065: Zero: accessor_entry misses the IRIW case
• 2a06335: 8254785: compiler/graalunit/HotspotTest.java failed with "missing Graal intrinsics for: java/lang/StringLatin1.indexOfChar([BIII)I"
• 1b7ddeb: 8254976: Re-enable swing jtreg tests which were broken due to samevm mode
• 2e510e0: 8255043: Incorrectly styled copyright text
• 6bd05b1: 8255074: sun.nio.fs.WindowsPath::getPathForWin32Calls synchronizes on String object
• 9e9f5e6: 8017179: [macosx] list1 and list2 vistble item isn't desired
• 2ee2b4a: 8231454: File lock in Windows on a loaded jar due to a leak in Introspector::getBeanInfo
• 42a6ead: 8254884: Make sure jvm does not crash with Arm SVE and Vector API
• e5870cf: 8252133: The java/awt/GraphicsDevice/DisplayModes/CycleDMImage.java fails if metal pipeline is active
• ... and 61 more: https://git.openjdk.java.net/jdk/compare/60f63ec811d834d9f1a7468a5552ffa12568b765...master

Your commit was automatically rebased without conflicts.

Pushed as commit 27230fa.

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