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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiRegister.java @ 4558:3706975946e4

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Make graph dumping a bit more robust when there is no method, enable debug in the startCompiler method, add context and scope for snippets installation Made IGV display graphs even if some edges are problematic When schedule failed don't use it
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 10 Feb 2012 02:22:23 +0100
parents aaac4894175c
children 12c63380e7ff
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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.oracle.max.cri.ci;
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24
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25 import java.io.*;
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26 import java.util.*;
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27
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28 /**
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29 * Represents a target machine register.
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30 */
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31 public final class CiRegister implements Comparable<CiRegister>, Serializable {
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32
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33 /**
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34 *
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35 */
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36 private static final long serialVersionUID = -7213269157816016300L;
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37
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38 /**
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39 * Invalid register.
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40 */
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41 public static final CiRegister None = new CiRegister(-1, -1, 0, "noreg");
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42
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43 /**
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44 * Frame pointer of the current method. All spill slots and outgoing stack-based arguments
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45 * are addressed relative to this register.
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46 */
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47 public static final CiRegister Frame = new CiRegister(-2, -2, 0, "framereg", RegisterFlag.CPU);
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48
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49 public static final CiRegister CallerFrame = new CiRegister(-3, -3, 0, "callerframereg", RegisterFlag.CPU);
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50
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51 /**
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52 * The identifier for this register that is unique across all the registers in a {@link CiArchitecture}.
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53 * A valid register has {@code number > 0}.
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54 */
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55 public final int number;
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56
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57 /**
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58 * The mnemonic of this register.
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59 */
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60 public final String name;
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61
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62 /**
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63 * The actual encoding in a target machine instruction for this register, which may or
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64 * may not be the same as {@link #number}.
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65 */
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66 public final int encoding;
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67
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68 /**
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69 * The size of the stack slot used to spill the value of this register.
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70 */
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71 public final int spillSlotSize;
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72
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73 /**
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74 * The set of {@link RegisterFlag} values associated with this register.
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75 */
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76 private final int flags;
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77
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78 /**
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79 * An array of {@link CiRegisterValue} objects, for this register, with one entry
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80 * per {@link CiKind}, indexed by {@link CiKind#ordinal}.
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81 */
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82 private final CiRegisterValue[] values;
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83
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84 /**
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85 * Attributes that characterize a register in a useful way.
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86 *
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87 */
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88 public enum RegisterFlag {
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89 /**
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90 * Denotes an integral (i.e. non floating point) register.
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91 */
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92 CPU,
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93
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94 /**
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95 * Denotes a register whose lowest order byte can be addressed separately.
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96 */
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97 Byte,
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98
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99 /**
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100 * Denotes a floating point register.
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101 */
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102 FPU;
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103
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104 public final int mask = 1 << (ordinal() + 1);
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105 }
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106
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107 /**
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108 * Creates a {@code CiRegister} instance.
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109 *
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110 * @param number unique identifier for the register
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111 * @param encoding the target machine encoding for the register
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112 * @param spillSlotSize the size of the stack slot used to spill the value of the register
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113 * @param name the mnemonic name for the register
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114 * @param flags the set of {@link RegisterFlag} values for the register
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115 */
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116 public CiRegister(int number, int encoding, int spillSlotSize, String name, RegisterFlag... flags) {
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117 this.number = number;
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118 this.name = name;
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119 this.spillSlotSize = spillSlotSize;
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120 this.flags = createMask(flags);
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121 this.encoding = encoding;
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122
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123 values = new CiRegisterValue[CiKind.VALUES.length];
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124 for (CiKind kind : CiKind.VALUES) {
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125 values[kind.ordinal()] = new CiRegisterValue(kind, this);
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126 }
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127 }
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128
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129 private static int createMask(RegisterFlag... flags) {
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130 int result = 0;
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131 for (RegisterFlag f : flags) {
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132 result |= f.mask;
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133 }
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134 return result;
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135 }
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136
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137 public boolean isSet(RegisterFlag f) {
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138 return (flags & f.mask) != 0;
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139 }
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140
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141 /**
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142 * Gets this register as a {@linkplain CiRegisterValue value} with a specified kind.
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143 * @param kind the specified kind
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parents:
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144 * @return the {@link CiRegisterValue}
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parents:
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145 */
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parents:
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146 public CiRegisterValue asValue(CiKind kind) {
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147 return values[kind.ordinal()];
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148 }
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149
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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150 /**
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151 * Gets this register as a {@linkplain CiRegisterValue value} with no particular kind.
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152 * @return a {@link CiRegisterValue} with {@link CiKind#Illegal} kind.
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153 */
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154 public CiRegisterValue asValue() {
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155 return asValue(CiKind.Illegal);
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156 }
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157
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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158 /**
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159 * Determines if this is a valid register.
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parents:
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160 * @return {@code true} iff this register is valid
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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161 */
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parents:
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162 public boolean isValid() {
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163 return number >= 0;
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164 }
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165
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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166 /**
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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167 * Determines if this a floating point register.
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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168 */
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169 public boolean isFpu() {
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170 return isSet(RegisterFlag.FPU);
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171 }
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172
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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173 /**
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174 * Determines if this a general purpose register.
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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175 */
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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176 public boolean isCpu() {
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177 return isSet(RegisterFlag.CPU);
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178 }
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179
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180 /**
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181 * Determines if this register has the {@link RegisterFlag#Byte} attribute set.
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182 * @return {@code true} iff this register has the {@link RegisterFlag#Byte} attribute set.
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183 */
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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184 public boolean isByte() {
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185 return isSet(RegisterFlag.Byte);
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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186 }
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187
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188 /**
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189 * Categorizes a set of registers by {@link RegisterFlag}.
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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190 *
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191 * @param registers a list of registers to be categorized
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192 * @return a map from each {@link RegisterFlag} constant to the list of registers for which the flag is
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193 * {@linkplain #isSet(RegisterFlag) set}
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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194 */
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195 public static EnumMap<RegisterFlag, CiRegister[]> categorize(CiRegister[] registers) {
4142
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parents: 3733
diff changeset
196 EnumMap<RegisterFlag, CiRegister[]> result = new EnumMap<>(RegisterFlag.class);
3733
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197 for (RegisterFlag flag : RegisterFlag.values()) {
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diff changeset
198 ArrayList<CiRegister> list = new ArrayList<>();
3733
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199 for (CiRegister r : registers) {
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200 if (r.isSet(flag)) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
201 list.add(r);
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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202 }
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203 }
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diff changeset
204 result.put(flag, list.toArray(new CiRegister[list.size()]));
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205 }
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206 return result;
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207 }
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208
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parents:
diff changeset
209 /**
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parents:
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210 * Gets the maximum register {@linkplain #number number} in a given set of registers.
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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211 *
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parents:
diff changeset
212 * @param registers the set of registers to process
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213 * @return the maximum register number for any register in {@code registers}
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
214 */
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parents:
diff changeset
215 public static int maxRegisterNumber(CiRegister[] registers) {
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parents:
diff changeset
216 int max = Integer.MIN_VALUE;
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parents:
diff changeset
217 for (CiRegister r : registers) {
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parents:
diff changeset
218 if (r.number > max) {
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diff changeset
219 max = r.number;
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220 }
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diff changeset
221 }
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diff changeset
222 return max;
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parents:
diff changeset
223 }
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diff changeset
224
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parents:
diff changeset
225 /**
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parents:
diff changeset
226 * Gets the maximum register {@linkplain #encoding encoding} in a given set of registers.
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parents:
diff changeset
227 *
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parents:
diff changeset
228 * @param registers the set of registers to process
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parents:
diff changeset
229 * @return the maximum register encoding for any register in {@code registers}
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
230 */
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
231 public static int maxRegisterEncoding(CiRegister[] registers) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
232 int max = Integer.MIN_VALUE;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
233 for (CiRegister r : registers) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
234 if (r.encoding > max) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
235 max = r.encoding;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
236 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
237 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
238 return max;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
239 }
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parents:
diff changeset
240
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
241 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 public String toString() {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
243 return name;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
244 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
245
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
246 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
247 public int compareTo(CiRegister o) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
248 if (number < o.number) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
249 return -1;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
250 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
251 if (number > o.number) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
252 return 1;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
253 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
254 return 0;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
255 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
256
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
257 }