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[Dependency Scanning] Resolve cross-import overlays relative to defining interface for prebuilt binary Swift dependencies

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When the dependency scanner picks a pre-built binary module candidate for a given dependency, it needs to be able to attempt to resolve its cross-import overlays relative to the textual interface that the binary module was built from. For example, if a collection of binary modules are located in, and resolved as dependencies from, a pre-built module directory, the scanner must lookup their corresponding cross-import overlays relative to the defining interface as read out from the binary module's MODULE_INTERFACE_PATH. https://github.com/swiftlang/swift/pull/70817 ensures that binary modules serialize the path to their defining textual interface.

Resolves rdar://130778577
This commit is contained in:
Artem Chikin
2024-07-02 15:50:55 -07:00
committed by artemcm
parent 1fde4c1267
commit 2464f87f8f
9 changed files with 134 additions and 27 deletions
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13
lib/Serialization/ModuleFileSharedCore.cpp
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@@ -1785,6 +1785,19 @@ bool ModuleFileSharedCore::hasSourceInfo() const {
return !!DeclUSRsTable;
}
std::string ModuleFileSharedCore::resolveModuleDefiningFilePath(const StringRef SDKPath) const {
if (!ModuleInterfacePath.empty()) {
std::string interfacePath = ModuleInterfacePath.str();
if (llvm::sys::path::is_relative(interfacePath)) {
SmallString<128> absoluteInterfacePath(SDKPath);
llvm::sys::path::append(absoluteInterfacePath, interfacePath);
return absoluteInterfacePath.str().str();
} else
return interfacePath;
} else
return ModuleInputBuffer->getBufferIdentifier().str();
}
ModuleLoadingBehavior
ModuleFileSharedCore::getTransitiveLoadingBehavior(
const Dependency &dependency,