Mercurial > hg > truffle
comparison test/compiler/6443505/Test6443505.java @ 9154:886d1fd67dc3
6443505: Ideal() function for CmpLTMask
Summary: Repair wrong code generation, added new matching rule
Reviewed-by: kvn, twisti
author | drchase |
---|---|
date | Fri, 12 Apr 2013 19:14:47 -0700 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
9153:bc63dd2539a4 | 9154:886d1fd67dc3 |
---|---|
1 /* | |
2 * Copyright (c) 2013, 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 /** | |
26 * @test | |
27 * @bug 6443505 | |
28 * @summary Some cases for CmpLTMask missed; also wrong code. | |
29 * | |
30 * @run main/othervm -Xcomp -XX:CompileOnly="Test6443505.compiled" Test6443505 | |
31 */ | |
32 | |
33 public class Test6443505 { | |
34 | |
35 public static void main(String[] args) throws InterruptedException { | |
36 test(Integer.MIN_VALUE, 0); | |
37 test(0, Integer.MIN_VALUE); | |
38 test(Integer.MIN_VALUE, -1); | |
39 test(-1, Integer.MIN_VALUE); | |
40 test(Integer.MIN_VALUE, 1); | |
41 test(1, Integer.MIN_VALUE); | |
42 | |
43 test(Integer.MAX_VALUE, 0); | |
44 test(0, Integer.MAX_VALUE); | |
45 test(Integer.MAX_VALUE, -1); | |
46 test(-1, Integer.MAX_VALUE); | |
47 test(Integer.MAX_VALUE, 1); | |
48 test(1, Integer.MAX_VALUE); | |
49 | |
50 test(Integer.MIN_VALUE, Integer.MAX_VALUE); | |
51 test(Integer.MAX_VALUE, Integer.MIN_VALUE); | |
52 | |
53 test(1, -1); | |
54 test(1, 0); | |
55 test(1, 1); | |
56 test(-1, -1); | |
57 test(-1, 0); | |
58 test(-1, 1); | |
59 test(0, -1); | |
60 test(0, 0); | |
61 test(0, 1); | |
62 } | |
63 | |
64 public static void test(int a, int b) throws InterruptedException { | |
65 int C = compiled(4, a, b); | |
66 int I = interpreted(4, a, b); | |
67 if (C != I) { | |
68 System.err.println("#1 C = " + C + ", I = " + I); | |
69 System.err.println("#1 C != I, FAIL"); | |
70 System.exit(97); | |
71 } | |
72 | |
73 C = compiled(a, b, q, 4); | |
74 I = interpreted(a, b, q, 4); | |
75 if (C != I) { | |
76 System.err.println("#2 C = " + C + ", I = " + I); | |
77 System.err.println("#2 C != I, FAIL"); | |
78 System.exit(97); | |
79 } | |
80 | |
81 } | |
82 | |
83 static int q = 4; | |
84 | |
85 // If improperly compiled, uses carry/borrow bit, which is wrong. | |
86 // with -XX:+PrintOptoAssembly, look for cadd_cmpLTMask | |
87 static int compiled(int p, int x, int y) { | |
88 return (x < y) ? q + (x - y) : (x - y); | |
89 } | |
90 | |
91 // interpreted reference | |
92 static int interpreted(int p, int x, int y) { | |
93 return (x < y) ? q + (x - y) : (x - y); | |
94 } | |
95 | |
96 // Test new code with a range of cases | |
97 // with -XX:+PrintOptoAssembly, look for and_cmpLTMask | |
98 static int compiled(int x, int y, int q, int p) { | |
99 return (x < y) ? p + q : q; | |
100 } | |
101 | |
102 // interpreted reference | |
103 static int interpreted(int x, int y, int q, int p) { | |
104 return (x < y) ? p + q : q; | |
105 } | |
106 | |
107 } |