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8248552: C2 crashes with SIGFPE due to division by zero #166

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@omikhaltsova omikhaltsova commented Apr 2, 2021

I'd like to backport JDK-8248552 to jdk13u for parity with jdk11u.
The original patch applied cleanly.
Tested with the test attached to the corresponding issue and the test added in this patch.


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

  • JDK-8248552: C2 crashes with SIGFPE due to division by zero

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Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk13u-dev pull/166/head:pull/166
$ git checkout pull/166

Update a local copy of the PR:
$ git checkout pull/166
$ git pull https://git.openjdk.java.net/jdk13u-dev pull/166/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 166

View PR using the GUI difftool:
$ git pr show -t 166

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk13u-dev/pull/166.diff

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bridgekeeper bot commented Apr 2, 2021

👋 Welcome back omikhaltcova! 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 openjdk bot changed the title Backport 417e8e449df569f593b82ecd640fa01b6b762832 8248552: C2 crashes with SIGFPE due to division by zero Apr 2, 2021
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openjdk bot commented Apr 2, 2021

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

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openjdk bot commented Apr 2, 2021

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

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

8248552: C2 crashes with SIGFPE due to division by zero

Bail out in PhaseIdealLoop:split_thru_phi when trying to split a Div or ModNode iv phi whose zero check was removed but could potentially still be zero based on type information.

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:

  • fa1b985: 8256682: JDK-8202343 is incomplete

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.

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➡️ 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).

@openjdk openjdk bot added the ready Pull request is ready to be integrated label Apr 2, 2021
@omikhaltsova omikhaltsova marked this pull request as ready for review Apr 2, 2021
@openjdk openjdk bot added the rfr Pull request is ready for review label Apr 2, 2021
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omikhaltsova commented Apr 2, 2021

/integrate

@openjdk openjdk bot added the sponsor Pull request is ready to be sponsored label Apr 2, 2021
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openjdk bot commented Apr 2, 2021

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Your change (at version efe702d) is now ready to be sponsored by a Committer.

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yan-too commented Apr 2, 2021

/sponsor

@openjdk openjdk bot closed this Apr 2, 2021
@openjdk openjdk bot added integrated Pull request has been integrated and removed sponsor Pull request is ready to be sponsored ready Pull request is ready to be integrated rfr Pull request is ready for review labels Apr 2, 2021
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openjdk bot commented Apr 2, 2021

@yan-too @omikhaltsova Since your change was applied there has been 1 commit pushed to the master branch:

  • fa1b985: 8256682: JDK-8202343 is incomplete

Your commit was automatically rebased without conflicts.

Pushed as commit 079ecdb.

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

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mlbridge bot commented Apr 2, 2021

Webrevs

@omikhaltsova omikhaltsova deleted the backport-417e8e44 branch May 20, 2021
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