[5.10 🍒][Dependency Scanning] Process implicit imports of the source module first, emulating implicit builds #68678
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Cherry-pick of #68677
• Release: Swift 5.10
• Explanation: In case import resolution order somehow sometimes matters, it's prudent to process/resolve/locate implicitly-imported modules first.
• Scope of Issue: Some projects which rely on import order-dependent behavior for Clang module resolution may be affected and see different behavior with explicit module builds.
• Risk: Minimal, this changes explicit module dependency scanning code-path only to match the behavior currently exercise by implicit module builds
• Origination: Explicit Module Build feature development. Scanner's default order of module resolution unintentionally differed from implicit module flow.
Resolves rdar://113917657