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comparison test/compiler/intrinsics/bmi/TestBlsiI.java @ 17778:a48e16541e6b

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8035857: Add tests to verify correctness of operations with BMI1 and LZCNT instructions Reviewed-by: iveresov, kvn, iignatyev Contributed-by: filipp.zhinkin@oracle.com
author iignatyev
date Sat, 22 Mar 2014 00:26:48 +0400
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17777:460f312abe11 17778:a48e16541e6b
1 /*
2 * Copyright (c) 2014, 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 8031321
28 * @summary Verify that results of computations are the same w/
29 * and w/o usage of BLSI instruction
30 * @library /testlibrary /testlibrary/whitebox
31 * @build TestBlsiI BMITestRunner Expr
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
34 * -XX:+WhiteBoxAPI TestBlsiI
35 */
36
37 import sun.hotspot.cpuinfo.CPUInfo;
38
39 public class TestBlsiI {
40
41 public static void main(String args[]) throws Throwable {
42 if (!CPUInfo.hasFeature("bmi1")) {
43 System.out.println("CPU does not support bmi1 feature. " +
44 "Test skipped.");
45 return;
46 }
47
48 BMITestRunner.runTests(BlsiIExpr.class, args,
49 "-XX:+UseBMI1Instructions");
50 BMITestRunner.runTests(BlsiICommutativeExpr.class, args,
51 "-XX:+UseBMI1Instructions");
52 }
53
54 public static class BlsiIExpr extends Expr.BMIUnaryIntExpr {
55
56 public int intExpr(int src) {
57 return -src & src;
58 }
59
60 public int intExpr(Expr.MemI src) {
61 return -src.value & src.value;
62 }
63
64 }
65
66 public static class BlsiICommutativeExpr extends Expr.BMIUnaryIntExpr {
67
68 public int intExpr(int src) {
69 return src & -src;
70 }
71
72 public int intExpr(Expr.MemI src) {
73 return src.value & -src.value;
74 }
75
76 }
77
78 }