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annotate graal/GraalCompiler/src/com/sun/c1x/debug/InstructionPrinter.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/debug/InstructionPrinter.java@9ec15d6914ca
children e1b3db8031ee
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2507
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1 /*
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2 * Copyright (c) 2009, 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.sun.c1x.debug;
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24
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25 import static com.sun.c1x.debug.InstructionPrinter.InstructionLineColumn.*;
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26
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27 import com.sun.c1x.ir.*;
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28
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29 /**
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30 * A {@link ValueVisitor} for {@linkplain #printInstruction(Value) printing}
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31 * an {@link Instruction} as an expression or statement.
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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 InstructionPrinter {
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36
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37
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38 /**
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39 * The columns printed in a tabulated instruction
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40 * {@linkplain InstructionPrinter#printInstructionListing(Value) listing}.
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41 */
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42 public enum InstructionLineColumn {
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43 /**
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44 * The instruction's bytecode index.
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45 */
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46 BCI(2, "bci"),
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47
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48 /**
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49 * The instruction's use count.
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50 */
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51 USE(7, "use"),
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52
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53 /**
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54 * The instruction as a {@linkplain com.sun.c1x.util.Util#valueString(com.sun.c1x.ir.Value) value}.
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55 */
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56 VALUE(12, "tid"),
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57
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58 /**
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59 * The instruction formatted as an expression or statement.
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60 */
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61 INSTRUCTION(19, "instr"),
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62
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63 END(60, "");
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64
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65 final int position;
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66 final String label;
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67
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68 private InstructionLineColumn(int position, String label) {
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69 this.position = position;
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70 this.label = label;
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71 }
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72
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73 /**
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74 * Prints this column's label to a given stream after padding the stream with '_' characters
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75 * until its {@linkplain LogStream#position() position} is equal to this column's position.
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76 * @param out the print stream
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77 */
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78 public void printLabel(LogStream out) {
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79 out.fillTo(position + out.indentationLevel(), '_');
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80 out.print(label);
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81 }
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82
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83 /**
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84 * Prints space characters to a given stream until its {@linkplain LogStream#position() position}
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85 * is equal to this column's position.
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86 * @param out the print stream
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87 */
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88 public void advance(LogStream out) {
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89 out.fillTo(position + out.indentationLevel(), ' ');
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90 }
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91 }
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92
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93 private final LogStream out;
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94
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95 public InstructionPrinter(LogStream out) {
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96 this.out = out;
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97 }
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98
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99 public LogStream out() {
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100 return out;
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101 }
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102
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103 /**
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104 * Prints a given instruction as an expression or statement.
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105 *
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106 * @param instruction the instruction to print
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107 */
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108 public void printInstruction(Value instruction) {
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109 instruction.print(out);
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110 }
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111
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112
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113 /**
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114 * Prints a header for the tabulated data printed by {@link #printInstructionListing(Value)}.
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115 */
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116 public void printInstructionListingHeader() {
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117 BCI.printLabel(out);
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118 USE.printLabel(out);
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119 VALUE.printLabel(out);
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120 INSTRUCTION.printLabel(out);
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121 END.printLabel(out);
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122 out.println();
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123 }
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124
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125 /**
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126 * Prints an instruction listing on one line. The instruction listing is composed of the
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127 * columns specified by {@link InstructionLineColumn}.
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128 *
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129 * @param instruction the instruction to print
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130 */
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131 public void printInstructionListing(Value instruction) {
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132 if (instruction.isLive()) {
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133 out.print('.');
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134 }
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135
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136 int indentation = out.indentationLevel();
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137 out.fillTo(BCI.position + indentation, ' ').
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138 print(instruction instanceof Instruction ? ((Instruction) instruction).bci() : 0).
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139 fillTo(USE.position + indentation, ' ').
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140 print("0").
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141 fillTo(VALUE.position + indentation, ' ').
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142 print(instruction).
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143 fillTo(INSTRUCTION.position + indentation, ' ');
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144 printInstruction(instruction);
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145 String flags = instruction.flagsToString();
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146 if (!flags.isEmpty()) {
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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147 out.print(" [flags: " + flags + "]");
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148 }
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149 if (instruction instanceof StateSplit) {
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150 out.print(" [state: " + ((StateSplit) instruction).stateBefore() + "]");
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151 }
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152 out.println();
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153 }
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154 }