Mercurial > hg > truffle
annotate graal/GraalCompiler/src/com/sun/c1x/graph/ProfileInformationStub.java @ 2683:026b21a81651
Merge.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Mon, 16 May 2011 17:26:47 +0200 |
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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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1 /* |
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2 * Copyright (c) 2011, 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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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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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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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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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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Refactoring of BlockMap so that it doesn't create BlockBegin objects, but maintains its own Block data structure
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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.sun.c1x.graph; |
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24 |
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25 import static com.sun.cri.bytecode.Bytecodes.*; |
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26 |
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27 import com.sun.c1x.*; |
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28 import com.sun.cri.bytecode.*; |
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29 import com.sun.cri.ri.*; |
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30 |
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31 /** |
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32 * A temporary placeholder to bring in profile information to Graal, until we have a definitive interface. |
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33 * That allows us to mark dependencies in code that will need fixup in the future. |
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34 * |
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35 * TODO this class and the signature of its methods i temporary |
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36 */ |
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37 public class ProfileInformationStub { |
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38 |
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39 public static boolean trappedFrequently(RiMethod method, int bci) { |
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40 |
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41 // TODO: Currently, the runtime system does not support deoptimization when a call trhows an exception, |
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42 // so mark is a trapping so that explicit exception handler edges are generated. |
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43 switch (Bytes.beU1(method.code(), bci)) { |
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44 case INVOKESTATIC: |
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45 case INVOKESPECIAL: |
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46 case INVOKEVIRTUAL: |
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47 case INVOKEINTERFACE: { |
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48 return true; |
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49 } |
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50 } |
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51 |
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52 if (C1XOptions.StressImplicitExceptions && canTrap(method.code()[bci])) { |
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53 return true; |
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54 } |
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55 |
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56 return false; |
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57 } |
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58 |
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59 } |