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annotate test/compiler/types/TestSpeculationFailedHigherEqual.java @ 20698:57490e455c30

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Merge
author lana
date Thu, 11 Dec 2014 13:39:41 -0800
parents 8f28240318a2
children 92aa6797d639
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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17671
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test
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26 * @bug 8027422
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27 * @summary type methods shouldn't always operate on speculative part
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28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:TypeProfileLevel=222 -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestSpeculationFailedHigherEqual
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29 *
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30 */
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31
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32 public class TestSpeculationFailedHigherEqual {
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33
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34 static class A {
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35 void m() {}
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36 int i;
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37 }
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38
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39 static class C extends A {
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40 }
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41
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42 static C c;
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43
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44 static A m1(A a, boolean cond) {
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45 // speculative type for a is C not null
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46 if (cond ) {
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47 a = c;
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48 }
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49 // speculative type for a is C (may be null)
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50 int i = a.i;
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51 return a;
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52 }
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53
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54 static public void main(String[] args) {
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55 C c = new C();
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56 TestSpeculationFailedHigherEqual.c = c;
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57 for (int i = 0; i < 20000; i++) {
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58 m1(c, i%2 == 0);
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59 }
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60
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61 System.out.println("TEST PASSED");
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62 }
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63 }