Decorative comments in OwnershipUtils

Author: atrick

include/swift/SIL/OwnershipUtils.h

@@ -66,6 +66,12 @@ struct BorrowedValue;
 /// Returns true if v is an address or trivial.
 bool isValueAddressOrTrivial(SILValue v);
 
+//===----------------------------------------------------------------------===//
+//                            Forwarding Utilities
+//
+// TODO: encapsulate in a ForwardingInstruction abstraction
+//===----------------------------------------------------------------------===//
+
 /// Is the opcode that produces \p value capable of forwarding guaranteed
 /// values?
 ///
@@ -108,6 +114,10 @@ inline bool isForwardingConsume(SILValue value) {
   return canOpcodeForwardOwnedValues(value);
 }
 
+//===----------------------------------------------------------------------===//
+//                        Ownership Def-Use Utilities
+//===----------------------------------------------------------------------===//
+
 bool hasPointerEscape(BorrowedValue value);
 
 /// Find leaf "use points" of \p guaranteedValue that determine its lifetime