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1 /* |
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2 * Copyright (c) 2010, 2012, 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 * Example of an add function that gets specialized to doubles |
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26 * if run with --optimize flag set |
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27 */ |
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28 |
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29 function add(a,b) { |
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30 return a + b; |
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31 } |
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32 |
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33 |
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34 function bench() { |
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35 var sum = 1; |
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36 for (var x = 0 ; x < 10e8/2 ; x ++) { |
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37 sum *= add(x,x + 1); |
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38 } |
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39 return sum; |
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40 } |
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41 |
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42 print("doing first run"); |
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43 var d = new Date; |
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44 print(bench()); |
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45 d = new Date - d; |
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46 print("first run took " + d + " ms"); |
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47 |
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48 // invalidate add, replace it with something else |
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49 add = function(a,b) { |
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50 return b + a; |
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51 } |
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52 |
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53 print("doing second run"); |
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54 var d = new Date; |
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55 print(bench()); |
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56 d = new Date - d; |
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57 print("second run took " + d + " ms"); |
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58 |