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annotate graal/Compiler/src/com/sun/c1x/debug/BlockPrinter.java @ 2507:9ec15d6914ca

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Pull over of compiler from maxine repository.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:43:22 +0200
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2507
9ec15d6914ca Pull over of compiler from maxine repository.
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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.debug;
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24
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25 import com.sun.c1x.graph.*;
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26 import com.sun.c1x.ir.*;
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27 import com.sun.c1x.util.*;
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28 import com.sun.c1x.value.*;
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29
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30 /**
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31 * Prints a listing for a {@linkplain BlockBegin block}.
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32 *
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33 * @author Doug Simon
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34 */
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35 public class BlockPrinter implements BlockClosure {
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36
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37 private final InstructionPrinter ip;
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38 private final boolean cfgOnly;
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39 private final boolean liveOnly;
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40
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41 public BlockPrinter(IR ir, InstructionPrinter ip, boolean cfgOnly, boolean liveOnly) {
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42 this.ip = ip;
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43 this.cfgOnly = cfgOnly;
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44 this.liveOnly = liveOnly;
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45 }
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46
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47 public void apply(BlockBegin block) {
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48 if (cfgOnly) {
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49 ip.printInstruction(block);
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50 ip.out().println();
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51 } else {
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52 printBlock(block, liveOnly);
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53 }
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54 }
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55
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56 public void printBlock(BlockBegin block, boolean liveOnly) {
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57 ip.printInstruction(block);
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58 LogStream out = ip.out();
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59 out.println();
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60 printFrameState(block.stateBefore(), out);
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61 out.println();
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62
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63 out.println("inlining depth " + block.stateBefore().scope().level);
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64
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65 ip.printInstructionListingHeader();
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66
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67 for (Instruction i = block.next(); i != null; i = i.next()) {
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68 if (!liveOnly || i.isLive()) {
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69 ip.printInstructionListing(i);
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70 }
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71 }
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72 out.println();
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73
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74 }
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75
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76 private static void printFrameState(FrameState newFrameState, LogStream out) {
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77 int startPosition = out.position();
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78 if (newFrameState.stackEmpty()) {
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79 out.print("empty stack");
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80 } else {
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81 out.print("stack [");
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82 int i = 0;
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83 while (i < newFrameState.stackSize()) {
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84 if (i > 0) {
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85 out.print(", ");
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86 }
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87 Value value = newFrameState.stackAt(i);
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88 out.print(i + ":" + Util.valueString(value));
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89 if (value == null) {
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90 i++;
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91 } else {
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92 i += value.kind.sizeInSlots();
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93 if (value instanceof Phi) {
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94 Phi phi = (Phi) value;
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95 if (phi.operand() != null) {
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96 out.print(" ");
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97 out.print(phi.operand().toString());
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98 }
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99 }
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100 }
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101 }
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102 out.print(']');
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103 }
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104 if (newFrameState.locksSize() != 0) {
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105 // print out the lines on the line below this
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106 // one at the same indentation level.
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107 out.println();
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108 out.fillTo(startPosition, ' ');
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109 out.print("locks [");
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110 for (int i = 0; i < newFrameState.locksSize(); i++) {
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111 Value value = newFrameState.lockAt(i);
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112 if (i > 0) {
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113 out.print(", ");
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114 }
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115 out.print(i + ":");
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116 if (value == null) {
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117 // synchronized methods push null on the lock stack
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118 out.print("this");
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119 } else {
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120 out.print(Util.valueString(value));
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121 }
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122 }
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123 out.print("]");
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124 }
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125 }
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126 }