[Dependency Scanning] Ignore -ffile-compilation-dir when Determining Swift Module Variants
#79270
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@swift-ci Please smoke test |
artemcm
approved these changes
Feb 10, 2025
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Currently, the Swift dependency scanner knows about a fixed list of
clangcommand line options it can ignore when computing a Swift module's cache hash. This PR adds-ffile-compilation-dirsince it is not necessary for the Swift module to vary when the only difference in the relevant command line arguments is a different-ffile-compilation-dir.rdar://144256093