[kernel] Add support for cloning Vector nodes and ClosureCreation

pkg/kernel/lib/clone.dart

Index: pkg/kernel/lib/clone.dart
diff --git a/pkg/kernel/lib/clone.dart b/pkg/kernel/lib/clone.dart
index a0db5fa2b2ac1703d1a2a5aef1e2821924dab7f2..6ad1936bb5e48445e1ef44aa75c86065605f24d9 100644
--- a/pkg/kernel/lib/clone.dart
+++ b/pkg/kernel/lib/clone.dart
@@ -227,6 +227,30 @@ class CloneVisitor extends TreeVisitor {
     return new Let(newVariable, clone(node.body));
   }
 
+  visitVectorCreation(VectorCreation node) {
+    return new VectorCreation(node.length);
+  }
+
+  visitClosureCreation(ClosureCreation node) {
+    return new ClosureCreation.byReference(
+        node.topLevelFunctionReference,
+        cloneOptional(node.contextVector),
+        visitOptionalType(node.functionType));
+  }
+
+  visitVectorSet(VectorSet node) {
+    return new VectorSet(
+        clone(node.vectorExpression), node.index, clone(node.value));
+  }
+
+  visitVectorGet(VectorGet node) {
+    return new VectorGet(clone(node.vectorExpression), node.index);
+  }
+
+  visitVectorCopy(VectorCopy node) {
+    return new VectorCopy(clone(node.vectorExpression));
+  }
+
   // Statements
   visitInvalidStatement(InvalidStatement node) {
     return new InvalidStatement();