SwiftCompilerSources: improve MarkDependenceInst.

Author: atrick

SwiftCompilerSources/Sources/SIL/Builder.swift

@@ -414,8 +414,9 @@ public struct Builder {
     return notifyNew(endMutation.getAs(EndCOWMutationInst.self))
   }
 
-  public func createMarkDependence(value: Value, base: Value, kind: MarkDependenceInst.Kind) -> MarkDependenceInst {
-    let markDependence = bridged.createMarkDependence(value.bridged, base.bridged, kind)
+  public func createMarkDependence(value: Value, base: Value, kind: MarkDependenceInst.DependenceKind) -> MarkDependenceInst {
+    let markDependence = bridged.createMarkDependence(value.bridged, base.bridged,
+                                                      BridgedInstruction.MarkDependenceKind(rawValue: kind.rawValue)!)
     return notifyNew(markDependence.getAs(MarkDependenceInst.self))
   }
 }

SwiftCompilerSources/Sources/SIL/Instruction.swift

@@ -923,13 +923,18 @@ class GetAsyncContinuationAddrInst : SingleValueInstruction, UnaryInstruction {}
 
 final public
 class MarkDependenceInst : SingleValueInstruction, ForwardingInstruction {
-  public typealias Kind = BridgedInstruction.MarkDependenceKind
-
+  public enum DependenceKind: Int32 {
+    case Unresolved = 0
+    case Escaping = 1
+    case NonEscaping = 2
+  }
   public var valueOperand: Operand { operands[0] }
   public var baseOperand: Operand { operands[1] }
   public var value: Value { return valueOperand.value }
   public var base: Value { return baseOperand.value }
-  public var dependenceKind: Kind { bridged.MarkDependenceInst_dependenceKind() }
+  public var dependenceKind: DependenceKind {
+    DependenceKind(rawValue: bridged.MarkDependenceInst_dependenceKind().rawValue)!
+  }
   public var isNonEscaping: Bool { dependenceKind == .NonEscaping }
   public var isUnresolved: Bool { dependenceKind == .Unresolved }
 }