1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @bug 6700100 8156760
27 * @summary small instance clone as loads/stores
28 * @library /
29 *
30 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
31 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*
32 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores
33 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
34 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*
35 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:+StressArrayCopyMacroNode
36 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores
37 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
38 *                   -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m*
39 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:-ReduceInitialCardMarks
40 *                   compiler.arraycopy.TestInstanceCloneAsLoadsStores
41 */
42
43package compiler.arraycopy;
44
45public class TestInstanceCloneAsLoadsStores extends TestInstanceCloneUtils {
46
47    // Should be compiled as loads/stores
48    static Object m1(D src) throws CloneNotSupportedException {
49        return src.clone();
50    }
51
52    // Should be compiled as adds of src (dest allocation eliminated)
53    static int m2(D src) throws CloneNotSupportedException {
54        D dest = (D)src.clone();
55        return dest.i1 + dest.i2 + ((int)dest.i3) + dest.i4 + dest.i5;
56    }
57
58    // Should be compiled as arraycopy stub call (object too large)
59    static int m3(E src) throws CloneNotSupportedException {
60        E dest = (E)src.clone();
61        return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 +
62            dest.i6 + dest.i7 + dest.i8 + dest.i9;
63    }
64
65    // Need profiling on src's type to be able to know number of
66    // fields. Cannot clone as loads/stores if compile doesn't use it.
67    static Object m4(A src) throws CloneNotSupportedException {
68        return src.clone();
69    }
70
71    // Same as above but should optimize out dest allocation
72    static int m5(A src) throws CloneNotSupportedException {
73        A dest = (A)src.clone();
74        return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5;
75    }
76
77    // Check that if we have no fields to clone we do fine
78    static Object m6(F src) throws CloneNotSupportedException {
79        return src.clone();
80    }
81
82    // With virtual call to clone: clone inlined from profling which
83    // gives us exact type of src so we can clone it with
84    // loads/stores.
85    static G m7(G src) throws CloneNotSupportedException {
86        return (G)src.myclone();
87    }
88
89    // Virtual call to clone but single target: exact type unknown,
90    // clone intrinsic uses profiling to determine exact type and
91    // clone with loads/stores.
92    static J m8(J src) throws CloneNotSupportedException {
93        return (J)src.myclone();
94    }
95
96    public static void main(String[] args) throws Exception {
97
98        TestInstanceCloneAsLoadsStores test = new TestInstanceCloneAsLoadsStores();
99
100        test.doTest(d, "m1");
101        test.doTest(d, "m2");
102        test.doTest(e, "m3");
103        test.doTest(a, "m4");
104        test.doTest(a, "m5");
105        test.doTest(f, "m6");
106        test.doTest(g, "m7");
107        test.doTest(k, "m8");
108
109        if (!test.success) {
110            throw new RuntimeException("some tests failed");
111        }
112
113    }
114}
115