SIL: add Type.isHeapObjectReferenceType

Author: eeckstein

SwiftCompilerSources/Sources/SIL/Type.swift

@@ -92,6 +92,9 @@ public struct Type : TypeProperties, CustomStringConvertible, NoReflectionChildr
     bridged.isExactSuperclassOf(type.bridged)
   }
 
+  /// True if this type references a "ref" type that has a single pointer representation.
+  public var isHeapObjectReferenceType: Bool { bridged.isHeapObjectReferenceType() }
+
   public func loweredInstanceTypeOfMetatype(in function: Function) -> Type {
     return canonicalType.instanceTypeOfMetatype.loweredType(in: function)
   }

include/swift/SIL/SILBridging.h

@@ -290,6 +290,7 @@ struct BridgedType {
   BRIDGED_INLINE bool isEscapable(BridgedFunction f) const;
   BRIDGED_INLINE bool isExactSuperclassOf(BridgedType t) const;
   BRIDGED_INLINE bool isMarkedAsImmortal() const;
+  BRIDGED_INLINE bool isHeapObjectReferenceType() const;
   BRIDGED_INLINE bool isAddressableForDeps(BridgedFunction f) const;
   BRIDGED_INLINE SWIFT_IMPORT_UNSAFE BridgedASTType getRawLayoutSubstitutedLikeType() const;
   BRIDGED_INLINE SWIFT_IMPORT_UNSAFE BridgedASTType getRawLayoutSubstitutedCountType() const;

include/swift/SIL/SILBridgingImpl.h

@@ -398,6 +398,10 @@ bool BridgedType::isMarkedAsImmortal() const {
   return unbridged().isMarkedAsImmortal();
 }
 
+bool BridgedType::isHeapObjectReferenceType() const {
+  return unbridged().isHeapObjectReferenceType();
+}
+
 bool BridgedType::isAddressableForDeps(BridgedFunction f) const {
   return unbridged().isAddressableForDeps(*f.getFunction());
 }