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annotate test/compiler/intrinsics/mathexact/GVNTest.java @ 17726:085b304a1cc5

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8027754: Enable loop optimizations for loops with MathExact inside Reviewed-by: kvn, iveresov
author rbackman
date Thu, 23 Jan 2014 12:08:28 +0100
parents 9949533a8623
children 4ca6dc0799b6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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 8028207
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27 * @summary Verify that GVN doesn't mess up the two addExacts
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28 * @compile GVNTest.java
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29 * @run main GVNTest
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30 *
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31 */
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32
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33 public class GVNTest {
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34 public static int result = 0;
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35 public static int value = 93;
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36 public static void main(String[] args) {
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37 for (int i = 0; i < 50000; ++i) {
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38 result = runTest(value + i);
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39 result = runTest(value + i);
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40 result = runTest(value + i);
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41 result = runTest(value + i);
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42 result = runTest(value + i);
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43 }
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44 }
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45
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46 public static int runTest(int value) {
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47 int v = value + value;
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48 int sum = 0;
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49 if (v < 4032) {
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50 for (int i = 0; i < 1023; ++i) {
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51 sum += Math.addExact(value, value);
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52 }
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53 } else {
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54 for (int i = 0; i < 321; ++i) {
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55 sum += Math.addExact(value, value);
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56 }
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57 }
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58 return sum + v;
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59 }
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60 }