1 files changed, 49 insertions, 0 deletions
diff --git a/test/573-checker-checkcast-regression/src/Main.java b/test/573-checker-checkcast-regression/src/Main.java
new file mode 100644
index 0000000000..473a2b164e
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+++ b/test/573-checker-checkcast-regression/src/Main.java
@@ -0,0 +1,49 @@
+/*
+ * 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.
+ */
+
+public class Main {
+
+  public static void main(String[] args) {
+    Object[] array = { new Integer(1), new Integer(2), new Integer(3) };
+    int result = test(array, 0, 2);
+    System.out.println(result);
+  }
+
+  // This test method uses two integers (`index1` and `index2`) to
+  // force the register allocator to use some high registers (R8-R15)
+  // on x86-64 in the code generated for the first CheckCast (which
+  // converts `new_array` to an `Object[]`), so as to produce code
+  // containing a conditional jump whose offset does not fit in a
+  // NearLabel when using Baker's read barrier fast path (because
+  // x86-64 instructions using these high registers have a larger
+  // encoding).
+  //
+  // The intent of this artifical constraint is to ensure the initial
+  // failure is properly tested by this regression test.
+
+  /// CHECK-START: int Main.test(java.lang.Object, int, int) register (after)
+  /// CHECK-DAG:     CheckCast check_kind:array_object_check
+  /// CHECK-DAG:     CheckCast check_kind:exact_check
+  /// CHECK-DAG:     CheckCast check_kind:exact_check
+
+  static public int test(Object new_array, int index1, int index2) {
+    Object[] objectArray = (Object[]) new_array;
+    Integer integer1 = (Integer) objectArray[index1];
+    Integer integer2 = (Integer) objectArray[index2];
+    return integer1.intValue() + integer2.intValue();
+  }
+
+}