Seed Debug Roslyn compiler caches from rolling builds - #135130
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Add rolling-only Debug CoreCLR builds for cache-enabled Unix PR legs and isolate their Roslyn cache entries from Release builds. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 6b47078d-4fe1-4db0-93fd-264f9a651be7
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Azure Pipelines: Successfully started running 5 pipeline(s). 11 pipeline(s) were filtered out due to trigger conditions. There may be pipelines that require an authorized user to comment /azp run to run. |
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Tagging subscribers to this area: @dotnet/runtime-infrastructure |
sbomer
approved these changes
Oct 2, 2026
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Copilot review overview
🟢 Approval recommended
The rolling jobs and cache-key changes consistently match the existing pipeline configuration.
Review effort: Balanced
Findings: None
What changed in this PR
Adds rolling Debug builds to seed configuration-specific Roslyn caches for matching PR jobs.
Changes:
- Adds Debug cache-seeding jobs for three Unix platforms.
- Separates Debug and Release cache keys while retaining v1 fallback.
| File | Description |
|---|---|
eng/pipelines/runtime.yml |
Adds rolling-only Debug build legs. |
eng/pipelines/coreclr/templates/setup-roslyn-cache.yml |
Versions and partitions Roslyn caches by configuration. |
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/ba-g failures are unrelated |
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Summary
CoreCLR_AllSubsetsbuilds for Linux x64, Linux musl x64, and macOS arm64, matching the corresponding PR build arguments.Measurements
The earlier Roslyn cache validation in #133748 measured
libs.testsat 4m53s with the cache versus 6m32s without it (25.25% faster). Debug-specific hit rates cannot be measured until the first rolling Debug build seeds its cache.Note
This pull request description was generated with GitHub Copilot.