[6.2][CAS] Allow uncached job from CAS based dependency scanning #82069
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cachemeifyoucan
commented
Jun 6, 2025
cachemeifyoucan
commented
- Explanation: Add a new option to allow swift compiler to load modules from CAS but skip caching and load source file from disk. This allows uncached build to quickly iterate on the current module without full dependency scanning every run.
- Scope: The new option is added for preview support when swift caching is enabled so preview can share the same build dependency as the rest of the build.
- Issues: rdar://152441866
- Original PRs: [CAS] Allow uncached job from CAS based dependency scanning #81990
- Risk: Low. A new option added to support preview when swift caching build is enabled.
- Testing: Unit test
- Reviewers: @benlangmuir
Create a path that swift-frontend can execute an uncached job from modules built with CAS based explicit module build. The new flag -import-module-from-cas will allow an uncached build to load module from CAS, and combined with source file from real file system to build the current module. This allows quick iterations that bypasses CAS, without full dependency scanning every time in between. rdar://152441866
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@swift-ci please test |
cachemeifyoucan
changed the title
akyrtzi
approved these changes
Jun 6, 2025
nkcsgexi
approved these changes
Jun 6, 2025
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@swift-ci please test macOS platform |
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