ART: Add regression test
This adds a test for CL I624c0f91676d9baaada6f33be9d7091f68d57535.
Change-Id: Ib9ea1400082ad03c4355983d95268e084c0b6a6e
diff --git a/test/522-checker-regression-monitor-exit/expected.txt b/test/522-checker-regression-monitor-exit/expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/522-checker-regression-monitor-exit/expected.txt
diff --git a/test/522-checker-regression-monitor-exit/info.txt b/test/522-checker-regression-monitor-exit/info.txt
new file mode 100644
index 0000000..7cfc963
--- /dev/null
+++ b/test/522-checker-regression-monitor-exit/info.txt
@@ -0,0 +1,3 @@
+Regression test for removal of monitor-exit due to lack of specified side-effects.
+The test invokes a synchronized version of Object.hashCode in multiple threads.
+If monitor-exit is removed, the following threads will get stuck and timeout.
\ No newline at end of file
diff --git a/test/522-checker-regression-monitor-exit/smali/Test.smali b/test/522-checker-regression-monitor-exit/smali/Test.smali
new file mode 100644
index 0000000..c8e9198
--- /dev/null
+++ b/test/522-checker-regression-monitor-exit/smali/Test.smali
@@ -0,0 +1,40 @@
+#
+# Copyright (C) 2015 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 public LTest;
+
+.super Ljava/lang/Object;
+
+## CHECK-START: int Test.synchronizedHashCode(java.lang.Object) dead_code_elimination (before)
+## CHECK: MonitorOperation [<<Param:l\d+>>] kind:enter
+## CHECK: MonitorOperation [<<Param>>] kind:exit
+
+## CHECK-START: int Test.synchronizedHashCode(java.lang.Object) dead_code_elimination (after)
+## CHECK: MonitorOperation [<<Param:l\d+>>] kind:enter
+## CHECK: MonitorOperation [<<Param>>] kind:exit
+
+.method public static synchronizedHashCode(Ljava/lang/Object;)I
+ .registers 2
+
+ monitor-enter p0
+ invoke-virtual {p0}, Ljava/lang/Object;->hashCode()I
+ move-result v0
+
+ # Must not get removed by DCE.
+ monitor-exit p0
+
+ return v0
+
+.end method
diff --git a/test/522-checker-regression-monitor-exit/src/Main.java b/test/522-checker-regression-monitor-exit/src/Main.java
new file mode 100644
index 0000000..c85ac96
--- /dev/null
+++ b/test/522-checker-regression-monitor-exit/src/Main.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.TimeoutException;
+
+public class Main {
+
+ // Workaround for b/18051191.
+ class InnerClass {}
+
+ private static class HashCodeQuery implements Callable<Integer> {
+ public HashCodeQuery(Object obj) {
+ m_obj = obj;
+ }
+
+ public Integer call() {
+ Integer result;
+ try {
+ Class<?> c = Class.forName("Test");
+ Method m = c.getMethod("synchronizedHashCode", new Class[] { Object.class });
+ result = (Integer) m.invoke(null, m_obj);
+ } catch (Exception e) {
+ System.err.println("Hash code query exception");
+ e.printStackTrace();
+ result = -1;
+ }
+ return result;
+ }
+
+ private Object m_obj;
+ private int m_index;
+ }
+
+ public static void main(String args[]) throws Exception {
+ Object obj = new Object();
+ int numThreads = 10;
+
+ ExecutorService pool = Executors.newFixedThreadPool(numThreads);
+
+ List<HashCodeQuery> queries = new ArrayList<HashCodeQuery>(numThreads);
+ for (int i = 0; i < numThreads; ++i) {
+ queries.add(new HashCodeQuery(obj));
+ }
+
+ try {
+ List<Future<Integer>> results = pool.invokeAll(queries, 5, TimeUnit.SECONDS);
+
+ int hash = obj.hashCode();
+ for (int i = 0; i < numThreads; ++i) {
+ int result = results.get(i).get();
+ if (hash != result) {
+ throw new Error("Query #" + i + " wrong. Expected " + hash + ", got " + result);
+ }
+ }
+ pool.shutdown();
+ } catch (CancellationException ex) {
+ System.err.println("Job timeout");
+ System.exit(1);
+ }
+ }
+}