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[release/10.0] Downgrade dotnet-optimization dependencies to LKG#128345

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May 19, 2026
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[release/10.0] Downgrade dotnet-optimization dependencies to LKG#128345
hoyosjs merged 1 commit into
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hoyosjs:juhoyosa/downgrade-opt-package

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@hoyosjs hoyosjs commented May 18, 2026

Fixes #127687

Servicing branches do not create optimization data packages. There were no optimization builds until february and we didn't notice the channel assignment in the optimization repo was wrong, so bits were flowing to places where changes weren't expected. Roll back to the LKG that is trained against .NET 10. Risk is low - this is the data used for 10.0.0.

Copilot AI review requested due to automatic review settings May 18, 2026 23:16
@github-actions github-actions Bot added the area-codeflow for labeling automated codeflow label May 18, 2026
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Pull request overview

Mechanical downgrade of dotnet-optimization dependencies on the release/10.0 branch from prerelease.26126.1 to the LKG version prerelease.26080.1 (SHA bc6c6a6b3ae72cfa214ec44b992a60aca978f176), reverting all six MIBC/PGO packages to consistent versions.

Changes:

  • Downgrade six optimization.* dependency versions in Version.Details.xml and update corresponding SHAs.
  • Mirror the same version downgrade in Version.Details.props.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File Description
eng/Version.Details.xml Downgrades all six optimization dependency entries (MIBC runtimes for win-x64/x86/arm64, linux-x64/arm64, and PGO.CoreCLR) to 26080.1 with matching SHA.
eng/Version.Details.props Updates the corresponding <optimization*PackageVersion> properties to 26080.1 to stay in sync.

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LGTM

@JulieLeeMSFT
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@hoyosjs, please check test failure. If not relevant to this PR, we can merge.

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hoyosjs commented May 19, 2026

/ba-g these legs don't use the PGO data that regressed.

@hoyosjs hoyosjs enabled auto-merge (squash) May 19, 2026 23:23
@hoyosjs hoyosjs merged commit d8f92c8 into dotnet:release/10.0 May 19, 2026
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@hoyosjs hoyosjs deleted the juhoyosa/downgrade-opt-package branch May 19, 2026 23:23
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5 participants