Swift SIL: add Function.isSpecialization

Author: eeckstein

SwiftCompilerSources/Sources/SIL/Function.swift

@@ -45,7 +45,9 @@ final public class Function : CustomStringConvertible, HasShortDescription, Hash
   public var isConvertPointerToPointerArgument: Bool { bridged.isConvertPointerToPointerArgument() }
 
   public var specializationLevel: Int { bridged.specializationLevel() }
-  
+
+  public var isSpecialization: Bool { bridged.isSpecialization() }
+
   public var hasOwnership: Bool { bridged.hasOwnership() }
 
   public var hasLoweredAddresses: Bool { bridged.hasLoweredAddresses() }

include/swift/SIL/SILBridging.h

@@ -510,6 +510,7 @@ struct BridgedFunction {
   BRIDGED_INLINE void setLinkage(BridgedLinkage linkage) const;
   BRIDGED_INLINE void setIsSerialized(bool isSerialized) const;
   BRIDGED_INLINE bool conformanceMatchesActorIsolation(BridgedConformance conformance) const;
+  BRIDGED_INLINE bool isSpecialization() const;
   bool isTrapNoReturn() const;
   bool isConvertPointerToPointerArgument() const;
   bool isAutodiffVJP() const;

include/swift/SIL/SILBridgingImpl.h

@@ -838,6 +838,10 @@ bool BridgedFunction::conformanceMatchesActorIsolation(BridgedConformance confor
   return swift::matchesActorIsolation(conformance.unbridged(), getFunction());
 }
 
+bool BridgedFunction::isSpecialization() const {
+  return getFunction()->isSpecialization();
+}
+
 bool BridgedFunction::isResilientNominalDecl(BridgedDeclObj decl) const {
   return decl.getAs<swift::NominalTypeDecl>()->isResilient(getFunction()->getModule().getSwiftModule(),
                                                            getFunction()->getResilienceExpansion());