upload android base code part3

android/art/test/603-checker-instanceof/src/Main.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+class SuperClass {
+}
+
+class ChildClass extends SuperClass {
+}
+
+public class Main {
+
+  /// CHECK-START:    void Main.main(java.lang.String[]) builder (after)
+  /// CHECK:          BoundType  klass:SuperClass can_be_null:false exact:false
+
+  /// CHECK-START:    void Main.main(java.lang.String[]) builder (after)
+  /// CHECK-NOT:      BoundType  klass:SuperClass can_be_null:false exact:true
+  public static void main(String[] args) {
+    Object obj = new ChildClass();
+
+    // We need a fixed point iteration to hit the bogus type update
+    // of 'obj' below, so create a loop that updates the type of 'obj'.
+    for (int i = 1; i < 1; i++) {
+      obj = new Object();
+    }
+
+    if (obj instanceof SuperClass) {
+      // We used to wrongly type obj as an exact SuperClass from this point,
+      // meaning we were statically determining that the following instanceof
+      // would always fail.
+      if (!(obj instanceof ChildClass)) {
+        throw new Error("Expected a ChildClass, got " + obj.getClass());
+      }
+    }
+  }
+}