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annotate test/compiler/6973329/Test.java @ 1693:6c9cc03d8726

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6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86 Summary: Recompile without subsuming loads if RA try to clone a node with anti_dependence. Reviewed-by: never
author kvn
date Wed, 11 Aug 2010 10:48:20 -0700
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1693
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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1 /*
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2 * Copyright (c) 2010, 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
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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6 * under the terms of the GNU General Public License version 2 only, as
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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7 * published by the Free Software Foundation.
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8 *
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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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
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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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
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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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
6c9cc03d8726 6973329: C2 with Zero based COOP produces code with broken anti-dependency on x86
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24 /**
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25 * @test
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26 * @bug 6973329
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27 * @summary C2 with Zero based COOP produces code with broken anti-dependency on x86
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28 *
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29 * @run main/othervm -Xbatch -Xcomp -XX:CompileOnly=Test Test
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30 */
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31
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32 class A {
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33 A next;
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34 int n;
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35
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36 public int get_n() {
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37 return n+1;
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38 }
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39 }
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40 public class Test {
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41
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42 A a;
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43
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44 void test (A new_next) {
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45 A prev_next = a.next;
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46 a.next = new_next;
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47 if (prev_next == null) {
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48 a.n = a.get_n();
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49 }
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50 }
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51
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52 public static void main(String args[]) {
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53 Test t = new Test();
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54 t.a = new A();
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55 t.a.n = 1;
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56 t.test(new A());
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57 if (t.a.n != 2) {
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58 System.out.println("Wrong value: " + t.a.n + " expected: 2");
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59 System.exit(97);
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60 }
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61 }
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62 }
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