SwiftCompilerSources: add bridging to hasFeature

Author: eeckstein

SwiftCompilerSources/Sources/Optimizer/PassManager/Options.swift

@@ -29,7 +29,11 @@ struct Options {
   }
 
   var enableEmbeddedSwift: Bool {
-    _bridged.enableEmbeddedSwift()
+    _bridged.hasFeature(.Embedded)
+  }
+
+  func hasFeature(_ feature: BridgedPassContext.Feature) -> Bool {
+    _bridged.hasFeature(feature)
   }
 
   enum AssertConfiguration {

include/swift/SILOptimizer/OptimizerBridging.h

@@ -169,6 +169,12 @@ struct BridgedPassContext {
     Lowered
   };
 
+  /// Enumeration describing all of the named features.
+  enum class Feature {
+#define LANGUAGE_FEATURE(FeatureName, SENumber, Description, Option) FeatureName,
+#include "swift/Basic/Features.def"
+  };
+
   SWIFT_IMPORT_UNSAFE BridgedOwnedString getModuleDescription() const;
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedChangeNotificationHandler asNotificationHandler() const;
   BRIDGED_INLINE SILStage getSILStage() const;
@@ -301,7 +307,7 @@ struct BridgedPassContext {
   };
 
   BRIDGED_INLINE bool enableStackProtection() const;
-  BRIDGED_INLINE bool enableEmbeddedSwift() const;
+  BRIDGED_INLINE bool hasFeature(Feature feature) const;
   BRIDGED_INLINE bool enableMoveInoutStackProtection() const;
   BRIDGED_INLINE AssertConfiguration getAssertConfiguration() const;
   bool enableSimplificationFor(BridgedInstruction inst) const;

include/swift/SILOptimizer/OptimizerBridgingImpl.h

@@ -414,9 +414,9 @@ bool BridgedPassContext::enableStackProtection() const {
   return mod->getOptions().EnableStackProtection;
 }
 
-bool BridgedPassContext::enableEmbeddedSwift() const {
+bool BridgedPassContext::hasFeature(Feature feature) const {
   swift::SILModule *mod = invocation->getPassManager()->getModule();
-  return mod->getASTContext().LangOpts.hasFeature(swift::Feature::Embedded);
+  return mod->getASTContext().LangOpts.hasFeature((swift::Feature)feature);
 }
 
 bool BridgedPassContext::enableMoveInoutStackProtection() const {