Mercurial > hg > truffle
annotate test/compiler/types/TestSpeculationFailedHigherEqual.java @ 14383:5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
Summary: type methods shouldn't always operate on speculative part
Reviewed-by: kvn, twisti
author | roland |
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date | Fri, 24 Jan 2014 09:31:53 +0100 |
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children | 45b0159f30f2 |
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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:+UnlockExperimentalVMOptions -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 } |