Mercurial > hg > truffle
annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiTypeProfile.java @ 4266:e2499e6d8aa7
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author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 11 Jan 2012 16:31:46 +0100 |
parents | aaac4894175c |
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1 /* |
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2 * Copyright (c) 2011, 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 package com.oracle.max.cri.ri; |
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24 |
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25 import java.io.*; |
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26 |
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27 /** |
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28 * This profile object represents the type profile of one call site, cast or instanceof instruction. The precision of |
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29 * the supplied values may vary, but a runtime that provides this information should be aware that it will be used to |
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30 * guide performance-critical decisions like speculative inlining, etc. |
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31 */ |
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32 public class RiTypeProfile implements Serializable { |
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33 |
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34 /** |
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35 * |
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36 */ |
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37 private static final long serialVersionUID = -6877016333706838441L; |
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38 |
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39 /** |
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40 * How often the instruction was executed, which may be used to judge the maturity of this profile. |
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41 */ |
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42 public int count; |
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43 |
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44 /** |
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45 * An estimation of how many different receiver types were encountered. This may or may not be the same as |
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46 * probabilities.length/types.length, as the runtime may store probabilities for a limited number of receivers. |
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47 */ |
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48 public int morphism; |
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49 |
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50 /** |
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51 * A list of receivers for which the runtime has recorded probability information. This array needs to have the same |
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52 * length as {@link RiTypeProfile#probabilities}. |
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53 */ |
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54 public RiResolvedType[] types; |
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55 |
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56 /** |
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57 * The estimated probabilities of the different receivers. This array needs to have the same length as |
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58 * {@link RiTypeProfile#types}. |
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59 */ |
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60 public float[] probabilities; |
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61 } |