[SIL] bridge Argument.isReborrow

Author: atrick

SwiftCompilerSources/Sources/SIL/Argument.swift

@@ -28,6 +28,8 @@ public class Argument : Value, Hashable {
   public var index: Int {
     return parentBlock.arguments.firstIndex(of: self)!
   }
+
+  public var isReborrow: Bool { bridged.isReborrow() }
 
   public static func ==(lhs: Argument, rhs: Argument) -> Bool {
     lhs === rhs
@@ -109,6 +111,12 @@ public struct Phi {
     incomingOperands.lazy.map { $0.value }
   }
 
+  public var isReborrow: Bool { value.isReborrow }
+
+  public var endsLifetime: Bool {
+    value.ownership == .owned || value.isReborrow
+  }
+
   public static func ==(lhs: Phi, rhs: Phi) -> Bool {
     lhs.value === rhs.value
   }

include/swift/SIL/SILBridging.h

@@ -730,6 +730,7 @@ struct BridgedArgument {
   SWIFT_IMPORT_UNSAFE BRIDGED_INLINE BridgedBasicBlock getParent() const;
   BRIDGED_INLINE BridgedArgumentConvention getConvention() const;
   BRIDGED_INLINE bool isSelf() const;
+  BRIDGED_INLINE bool isReborrow() const;
 };
 
 struct OptionalBridgedArgument {

include/swift/SIL/SILBridgingImpl.h

@@ -368,6 +368,10 @@ bool BridgedArgument::isSelf() const {
   return fArg->isSelf();
 }
 
+bool BridgedArgument::isReborrow() const {
+  return getArgument()->isReborrow();
+}
+
 //===----------------------------------------------------------------------===//
 //                            BridgedSubstitutionMap
 //===----------------------------------------------------------------------===//