Mercurial > hg > graal-compiler
annotate graal/Compiler/src/com/sun/c1x/lir/LIROp1.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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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 com.sun.c1x.util.*; |
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26 import com.sun.cri.ci.*; |
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27 |
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28 /** |
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29 * The {@code LIROp1} class definition. The LIROp1 instruction has only one input operand. |
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30 * |
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31 * @author Marcelo Cintra |
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32 */ |
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33 public class LIROp1 extends LIRInstruction { |
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34 |
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35 public enum LIRMoveKind { |
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36 Normal, Volatile, Unaligned |
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37 } |
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38 |
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39 public final CiKind kind; // the operand type |
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40 public final LIRMoveKind moveKind; // flag that indicate the kind of move |
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41 |
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42 /** |
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43 * Constructs a new LIROp1 instruction. |
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44 * |
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45 * @param opcode the instruction's opcode |
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46 * @param opr the first input operand |
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47 * @param result the operand that holds the result of this instruction |
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48 * @param kind the kind of this instruction |
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49 * @param info the object holding information needed to emit debug information |
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50 */ |
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51 public LIROp1(LIROpcode opcode, CiValue opr, CiValue result, CiKind kind, LIRDebugInfo info) { |
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52 super(opcode, result, info, false, 0, 0, opr); |
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53 this.kind = kind; |
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54 this.moveKind = LIRMoveKind.Normal; |
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55 assert isInRange(opcode, LIROpcode.BeginOp1, LIROpcode.EndOp1) : "The " + opcode + " is not a valid LIROp1 opcode"; |
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56 } |
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57 |
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58 /** |
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59 * Constructs a new LIROp1 instruction. |
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60 * |
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61 * @param opcode the instruction's opcode |
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62 * @param opr the first input operand |
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63 * @param result the operand that holds the result of this instruction |
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64 * @param kind the kind of this instruction |
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65 */ |
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66 public LIROp1(LIROpcode opcode, CiValue opr, CiValue result, CiKind kind) { |
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67 this(opcode, opr, result, kind, null); |
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68 } |
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69 |
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70 /** |
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71 * Constructs a new LIROp1 instruction. |
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72 * |
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73 * @param opcode the instruction's opcode |
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74 * @param opr the first input operand |
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75 * @param result the operand that holds the result of this instruction |
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76 */ |
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77 public LIROp1(LIROpcode opcode, CiValue opr, CiValue result) { |
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78 this(opcode, opr, result, CiKind.Illegal); |
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79 } |
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80 |
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81 /** |
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82 * Constructs a new LIROp1 instruction. |
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83 * |
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84 * @param opcode the instruction's opcode |
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85 * @param opr the first input operand |
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86 */ |
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87 public LIROp1(LIROpcode opcode, CiValue opr) { |
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88 this(opcode, opr, CiValue.IllegalValue); |
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89 } |
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90 |
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91 /** |
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92 * Constructs a new LIROp1 instruction. |
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93 * |
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94 * @param moveKind the kind of move the instruction represents |
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95 * @param operand the single input operand |
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96 * @param result the operand that holds the result of this instruction |
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97 * @param kind the kind of this instruction |
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98 * @param info the object holding information needed to emit debug information |
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99 */ |
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100 public LIROp1(LIRMoveKind moveKind, CiValue operand, CiValue result, CiKind kind, LIRDebugInfo info) { |
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101 super(LIROpcode.Move, result, info, false, 0, 0, operand); |
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102 this.kind = kind; |
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103 this.moveKind = moveKind; |
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104 } |
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105 |
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106 /** |
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107 * Constructs a new LIROp1 instruction. |
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108 * |
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109 * @param opcode the instruction's opcode |
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110 * @param opr the first input operand |
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111 * @param info the object holding information needed to emit debug information |
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112 */ |
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113 public LIROp1(LIROpcode opcode, CiValue opr, LIRDebugInfo info) { |
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114 super(opcode, CiValue.IllegalValue, info, false, 0, 0, opr); |
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115 this.kind = CiKind.Illegal; |
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116 this.moveKind = LIRMoveKind.Normal; |
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117 assert isInRange(opcode, LIROpcode.BeginOp1, LIROpcode.EndOp1) : "The " + opcode + " is not a valid LIROp1 opcode"; |
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118 } |
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119 |
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120 /** |
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121 * Gets the input operand of this instruction. |
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122 * |
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123 * @return opr the input operand. |
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124 */ |
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125 public CiValue operand() { |
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126 return operand(0); |
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127 } |
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128 |
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129 /** |
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130 * Gets the kind of move of this instruction. |
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131 * |
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132 * @return flags the constant that represents the move kind. |
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133 */ |
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134 public LIRMoveKind moveKind() { |
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135 assert code == LIROpcode.Move : "The opcode must be of type LIROpcode.Move in LIROp1"; |
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136 return moveKind; |
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137 } |
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138 |
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139 @Override |
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140 public void emitCode(LIRAssembler masm) { |
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141 masm.emitOp1(this); |
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142 } |
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143 |
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144 @Override |
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145 public String name() { |
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146 if (code == LIROpcode.Move) { |
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147 switch (moveKind()) { |
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148 case Normal: |
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149 return "move"; |
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150 case Unaligned: |
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151 return "unaligned move"; |
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152 case Volatile: |
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153 return "volatile_move"; |
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154 default: |
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155 throw Util.shouldNotReachHere(); |
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156 } |
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157 } else { |
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158 return super.name(); |
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159 } |
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160 } |
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161 |
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162 @Override |
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163 public boolean verify() { |
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164 switch (code) { |
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165 case Move: |
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166 assert (operand().isLegal()) && (result().isLegal()) : "Operand and result must be valid in a LIROp1 move instruction."; |
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167 break; |
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168 case NullCheck: |
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169 assert operand().isVariableOrRegister() : "Operand must be a register in a LIROp1 null check instruction."; |
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170 break; |
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171 case Return: |
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172 assert operand().isVariableOrRegister() || operand().isIllegal() : "Operand must be (register | illegal) in a LIROp1 return instruction."; |
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173 break; |
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174 } |
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175 return true; |
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176 } |
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177 } |