4 files changed, 109 insertions, 0 deletions
diff --git a/test/641-checker-arraycopy/build b/test/641-checker-arraycopy/build
new file mode 100644
index 0000000000..9abc61897a
--- /dev/null
+++ b/test/641-checker-arraycopy/build
@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Copyright 2017 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.
+
+# make us exit on a failure
+set -e
+
+# Don't use jack for this test, to ensure we don't use
+# the typed System.arraycopy versions directly.
+export USE_JACK=false
+
+./default-build
diff --git a/test/641-checker-arraycopy/expected.txt b/test/641-checker-arraycopy/expected.txt
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/641-checker-arraycopy/expected.txt
diff --git a/test/641-checker-arraycopy/info.txt b/test/641-checker-arraycopy/info.txt
new file mode 100644
index 0000000000..1a1111e145
--- /dev/null
+++ b/test/641-checker-arraycopy/info.txt
@@ -0,0 +1,2 @@
+Checker test for testing the arraycopy optimization in
+instruction simplifier.
diff --git a/test/641-checker-arraycopy/src/Main.java b/test/641-checker-arraycopy/src/Main.java
new file mode 100644
index 0000000000..f0fcf28d23
--- /dev/null
+++ b/test/641-checker-arraycopy/src/Main.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2017 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 {
+
+  // Note that this is testing we haven't intrinsified the byte[] arraycopy version.
+  // Once we eventually start doing it, we will need to re-adjust this test.
+
+  /// CHECK-START-X86: void Main.typedCopy(java.lang.Object, byte[]) disassembly (after)
+  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
+  /// CHECK-NOT:    call
+  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
+  /// CHECK:        call
+  /// CHECK: ReturnVoid
+  public static void typedCopy(Object o, byte[] foo) {
+    System.arraycopy(o, 1, o, 0, 1);
+    System.arraycopy(foo, 1, foo, 0, 1);
+  }
+
+  public static void untypedCopy(Object o, Object foo) {
+    System.arraycopy(o, 1, o, 0, 1);
+    System.arraycopy(foo, 1, foo, 0, 1);
+  }
+
+  // Test that we still do the optimization after inlining.
+
+  /// CHECK-START-X86: void Main.untypedCopyCaller(java.lang.Object, byte[]) disassembly (after)
+  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
+  /// CHECK-NOT:    call
+  /// CHECK: InvokeStaticOrDirect method_name:java.lang.System.arraycopy intrinsic:SystemArrayCopy
+  /// CHECK:        call
+  /// CHECK: ReturnVoid
+  public static void untypedCopyCaller(Object o, byte[] array) {
+    untypedCopy(o, array);
+  }
+
+  public static void assertEquals(Object one, Object two) {
+    if (one != two) {
+      throw new Error("Expected " + one + ", got " + two);
+    }
+  }
+
+  public static void main(String[] args) {
+    // Simple sanity checks.
+    byte[] a = new byte[2];
+    Object[] o = new Object[2];
+
+    o[0] = a;
+    o[1] = o;
+    a[0] = 1;
+    a[1] = 2;
+
+    untypedCopyCaller(o, a);
+    assertEquals(o[0], o);
+    assertEquals(o[1], o);
+    assertEquals(a[0], (byte)2);
+    assertEquals(a[1], (byte)2);
+
+    o[0] = a;
+    o[1] = o;
+    a[0] = 1;
+    a[1] = 2;
+
+    typedCopy(o, a);
+    assertEquals(o[0], o);
+    assertEquals(o[1], o);
+    assertEquals(a[0], (byte)2);
+    assertEquals(a[1], (byte)2);
+  }
+}