This is a backport PR for branch 43-x-y
MarshallOfSound

#51829: build: consume Electron-generated PGO profiles in release builds (43-x-y)

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Created: Jun 1, 2026, 4:56:00 PM
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Target: 43-x-y

Manual backport of #51815 to 43-x-y.

  • Wires 43-x-y release builds to consume the Electron-generated PGO profiles collected on this branch (run 26778369197: 8/8 platforms + V8 builtins, Chromium 150)
  • State files point at the 4261f685ba-stamped profiles uploaded from that run
  • Identical mechanics to main: state files + gclient download hooks + a Chromium patch that resolves profiles through the standard chrome_pgo_phase = 2 machinery

Notes: Improved runtime performance.

Backport Information

Original PR Author
MarshallOfSound
Original PR Status
Merged
Original PR Merged At
Jun 1, 2026, 11:39:38 PM
Original PR Link
GitHubView on GitHub

Semver Impact

Major
Breaking changes
Minor
New features
Patch
Bug fixes
None
Docs, tests, etc.

Semantic Versioning helps users understand the impact of updates:

  • Major (X.y.z): Breaking changes that may require code modifications
  • Minor (x.Y.z): New features that maintain backward compatibility
  • Patch (x.y.Z): Bug fixes that don't change the API
  • None: Changes that don't affect using facing parts of Electron