01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package org.apache.harmony.drlvm.tests.regression.h3121;
19:
20: import junit.framework.TestCase;
21:
22: /* The test checks that the JIT correctly optimizes virtual calls
23: * when the receiver is of interface type. Loops are needed to force
24: * JIT recompilation. The method vc() contains both an interface call
25: * and a virtual call, an attempt to devirtualize a virtual call caused
26: * segfault in the ValueProfileCollector (Harmony-3121 issue).
27: */
28: public class H3121 extends TestCase {
29:
30: Intf io = new IntfClass();
31: Object o = new Object();
32:
33: public void test() {
34: boolean b = false;
35: for (int i = 0; i < 10000000; i++) {
36: b = vc();
37: }
38: System.out.println("Test passed");
39: }
40:
41: public boolean vc() {
42: io.fake();
43: return io.equals(o);
44: }
45: }
46:
47: interface Intf {
48: public void fake();
49: }
50:
51: class IntfClass implements Intf {
52: public void fake() {
53: for (int i = 0; i < 100; i++) {
54: }
55: }
56: }
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