8290451: Incorrect result when switching to C2 OSR compilation from C1

[yan-too]

Clean backport of a C2 change for parity with LTS releases. Compiler tests do pass.

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Progress

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

Issue

• JDK-8290451: Incorrect result when switching to C2 OSR compilation from C1

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk15u-dev pull/309/head:pull/309
$ git checkout pull/309

Update a local copy of the PR:
$ git checkout pull/309
$ git pull https://git.openjdk.org/jdk15u-dev pull/309/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 309

View PR using the GUI difftool:
$ git pr show -t 309

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk15u-dev/pull/309.diff

[bridgekeeper]

👋 Welcome back yan! 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.

[openjdk]

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

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

8290451: Incorrect result when switching to C2 OSR compilation from C1

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:

• ea36dfe: 8296496: Overzealous check in sizecalc.h prevents large memory allocation

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.

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

[mlbridge]

Webrevs

• 00: Full (3ececf72)

[yan-too]

/integrate

[openjdk]

Going to push as commit 8dbca0d.
Since your change was applied there have been 2 commits pushed to the master branch:

• 7750a23: 8296957: One more cast in SAFE_SIZE_NEW_ARRAY2
• ea36dfe: 8296496: Overzealous check in sizecalc.h prevents large memory allocation

Your commit was automatically rebased without conflicts.

[openjdk]

@yan-too Pushed as commit 8dbca0d.

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