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annotate graal/GraalCompiler/src/com/sun/c1x/lir/LIRDebugInfo.java @ 2707:7ed72769d51a

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exception handling related changes: * changed blockPredecessors to list of Instructions, instead of Blocks * removed explicit predecessor management in BlockBegin, now using predecessors from Graph structure * replaced generated LIR exception entries with exception dispatch chains in IR * added Unwind and ExceptionDispatch instructions * removed ExceptionEntry flag in BlockBegin and all code depending on it * removed exceptionHandler list from Instruction, replaced by exception Edge on Invoke and Throw * replaced list of ExceptionHandlers with single exception edge in debug info misc: * changed GraphvizPrinter layout (smaller ports on large nodes) * removed defunct run config
author Lukas Stadler <lukas.stadler@jku.at>
date Wed, 18 May 2011 18:09:20 +0200
parents 16b9a8b5ad39
children a0dd2b907806
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2009, 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
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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.sun.c1x.lir;
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24
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25 import java.util.*;
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26
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27 import com.sun.c1x.*;
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28 import com.sun.c1x.ir.*;
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29 import com.sun.c1x.value.*;
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30 import com.sun.cri.ci.*;
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31
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32 /**
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33 * This class represents debugging and deoptimization information attached to a LIR instruction.
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34 */
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35 public class LIRDebugInfo {
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36
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37 public abstract static class ValueLocator {
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38 public abstract CiValue getLocation(Value value);
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39 }
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40
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41 public final FrameState state;
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42 public final BlockBegin exceptionEdge;
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43 public CiDebugInfo debugInfo;
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44
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45 public LIRDebugInfo(FrameState state, BlockBegin exceptionEdge) {
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46 assert state != null;
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47 this.state = state;
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48 this.exceptionEdge = exceptionEdge;
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49 }
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50
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51 private LIRDebugInfo(LIRDebugInfo info) {
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52 this.state = info.state;
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53 this.exceptionEdge = info.exceptionEdge;
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54 }
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55
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56 public LIRDebugInfo copy() {
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57 return new LIRDebugInfo(this);
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58 }
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59
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60 public void setOop(CiValue location, C1XCompilation compilation, CiBitMap frameRefMap, CiBitMap regRefMap) {
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61 CiTarget target = compilation.target;
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62 if (location.isAddress()) {
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63 CiAddress stackLocation = (CiAddress) location;
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64 assert stackLocation.index.isIllegal();
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65 if (stackLocation.base == CiRegister.Frame.asValue()) {
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66 int offset = stackLocation.displacement;
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67 assert offset % target.wordSize == 0 : "must be aligned";
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68 int stackMapIndex = offset / target.wordSize;
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69 setBit(frameRefMap, stackMapIndex);
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70 }
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71 } else if (location.isStackSlot()) {
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72 CiStackSlot stackSlot = (CiStackSlot) location;
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73 assert !stackSlot.inCallerFrame();
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74 assert target.spillSlotSize == target.wordSize;
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75 setBit(frameRefMap, stackSlot.index());
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76 } else {
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77 assert location.isRegister() : "objects can only be in a register";
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78 CiRegisterValue registerLocation = (CiRegisterValue) location;
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79 int reg = registerLocation.reg.number;
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80 assert reg >= 0 : "object cannot be in non-object register " + registerLocation.reg;
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81 assert reg < target.arch.registerReferenceMapBitCount;
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82 setBit(regRefMap, reg);
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83 }
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84 }
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85
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86 public CiDebugInfo debugInfo() {
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87 assert debugInfo != null : "debug info not allocated yet";
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88 return debugInfo;
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89 }
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90
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91 public boolean hasDebugInfo() {
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92 return debugInfo != null;
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93 }
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94
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95 public static void setBit(CiBitMap refMap, int bit) {
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96 assert !refMap.get(bit) : "Ref map entry " + bit + " is already set.";
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97 refMap.set(bit);
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98 }
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99
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100 @Override
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101 public String toString() {
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102 return state.toString();
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103 }
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104 }