Branch cut V8 9.1

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Michael Hablich

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Apr 1, 2021, 9:00:55 AM4/1/21
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Hi,

it is time again. If you have any questions regarding the release, please ping this thread.

Tuesday 2021-04-06: API adoption freeze starting
V8 will branch on Thursday for the upcoming Beta phase for Chrome 91. On the 2021-04-08 one of the latest Canaries will be selected to be the branch backup candidate in case of any issues on the branch day.
In order to make this synchronization as painless as possible for V8 and Blink please don't make API changes which make the revert more difficult and don't adopt API changes. When in doubt, ask hablich@ or vahl@.

Thursday 2021-04-08: Create 9.1 branch
Create the 9.0 branch based on one of the latest V8 version. The auto-roller is closed (maybe over the weekend). Keep in mind that this means we are not integrating with Chromium (much less test coverage). If you happen to work on an important fix, please make sure that the fix is on 9.1 too! See information on merging & patching for the details.

Latest Monday 2021-04-12: Back to normal and API adoption freeze is lifted
Auto-roller is running again and we are back to normal business.

Cheers,
Michael

Lutz Vahl

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Apr 8, 2021, 7:45:21 AM4/8/21
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Hi,

we have officially branched to be prepared for the upcoming Chrome version 91. The base of the branch is currently rolled into Chromium. It is based on one of the latest Chrome Canaries.

Integration into Chromium is stopped until Chromium has branched too.

V8 branch: branch-heads/9.1
V8 Version: 9.1.269
Ref to be used in Chromium: https://chromium.googlesource.com/v8/v8/+/refs/heads/9.1-lkgr

If your CL is not included in 9.1.269 you might consider merging it into the branch branch-heads/9.1. In that case please apply the label Merge-Request-9.1 to the bug the CL is fixing. See https://v8.dev/docs/merge-patch for more information on merging.

Cheers,
 Lutz

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