8317452: [JVMCI] Export symbols used by lightweight locking to JVMCI compilers.

[rkennke]

Backport of openjdk/jdk@9718f49

Eases subsequent backports and makes JVMCI compatible with future Graal LW locking impl.

Unclean because of context diff in vmStructs_jvmci.cpp, otherwise straightforward.

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Progress

• Change must not contain extraneous whitespace
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Issue

• JDK-8317452: [JVMCI] Export symbols used by lightweight locking to JVMCI compilers. (Enhancement - P4)

Reviewers

• Aleksey Shipilev (@shipilev - Committer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/74/head:pull/74
$ git checkout pull/74

Update a local copy of the PR:
$ git checkout pull/74
$ git pull https://git.openjdk.org/lilliput-jdk17u.git pull/74/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 74

View PR using the GUI difftool:
$ git pr show -t 74

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/lilliput-jdk17u/pull/74.diff

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[bridgekeeper]

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[openjdk]

@rkennke 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:

8317452: [JVMCI] Export symbols used by lightweight locking to JVMCI compilers.

Reviewed-by: shade

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[openjdk]

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

[mlbridge]

Webrevs

• 00: Full (61f15bf7)

[shipilev]

Looks reasonable.

[shipilev]

I was a bit concerned this subtly changes the observable VM behavior by JVMCI compilers, but it looks like the flag is already develop, and so cannot really affect release binaries.

[rkennke]

Thanks!

/integrate

[openjdk]

Going to push as commit 46c75ee.

[openjdk]

@rkennke Pushed as commit 46c75ee.

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