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Frontend: add a front-end option to specify module names for which we prefer to loading via interfaces

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ABI checker imports Swift frameworks by using Swift interfaces for various
reasons. The existing way of controlling preferred importing mechanism is by
setting an environment variable (SWIFT_FORCE_MODULE_LOADING), which may lead
to performance issues because the stdlib could also be loaded in this way.

This patch adds a new front-end option to specify module names for
which we prefer to importing via Swift interface. The option currently is only
accessible via swift-api-digester.

rdar://54559888
This commit is contained in:
Xi Ge
2019-08-27 17:39:15 -07:00
parent e9d22f25f7
commit 1e656662d9
9 changed files with 64 additions and 7 deletions
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6
lib/Serialization/SerializedModuleLoader.cpp
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@@ -104,8 +104,10 @@ Optional<bool> forEachModuleSearchPath(
// Defined out-of-line so that we can see ~ModuleFile.
SerializedModuleLoaderBase::SerializedModuleLoaderBase(
ASTContext &ctx, DependencyTracker *tracker, ModuleLoadingMode loadMode)
: ModuleLoader(tracker), Ctx(ctx), LoadMode(loadMode) {}
ASTContext &ctx, DependencyTracker *tracker, ModuleLoadingMode loadMode,
ArrayRef<std::string> PreferInterfaceForModules)
: ModuleLoader(tracker), Ctx(ctx), LoadMode(loadMode),
PreferInterfaceForModules(PreferInterfaceForModules) {}
SerializedModuleLoaderBase::~SerializedModuleLoaderBase() = default;
SerializedModuleLoader::~SerializedModuleLoader() = default;