Updating llvm-project swift/main branch

Development Announcements
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We will be performing an update to the swift/main branch for apple/llvm-project repository.

We will be verifying the update on Swift CI with following platforms.

  • macOS
  • Ubuntu 18.04, 20.04
  • CentOS 7, 8
  • Amazon Linux 2

For those supporting other platforms if you would like to test against the swift/main merge before it lands please check out the following branches:

swift
rebranch

llvm-project
stable/20210726

Update Checkout Scheme:
./utils/update-checkout --scheme rebranch

Automergers

Swift will have an automerger from main into rebranch to keep the branch in sync.

Branch Detail

Swift rebranch was created from next on July 26th 2021.
LLVM Project stable/20210726 were created from next on July 26th 2021.

I will update this topic before we perform the operation.

More detail about Simplifying the apple/llvm-project branches

Toolchain size increased after rebranch merge
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Planning on doing the rebranch merge on Monday Sept 27th 2021.

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Pull request created to merge changes into apple/swift:main from rebranch branch
https://github.com/apple/swift/pull/39473

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swift: main branch updated, please use llvm-project: stable/20210726 with swift: main.

Thank you!

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