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annotate graal/com.oracle.graal.lir.hsail/src/com/oracle/graal/lir/hsail/HSAILControlFlow.java @ 11757:ec058ce90a3d

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pylint fixes
author Mick Jordan <mick.jordan@oracle.com>
date Mon, 23 Sep 2013 21:35:12 -0700
parents 395d34c10e26
children d7f8dd4fe876
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1 /*
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2 * Copyright (c) 2013, 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.graal.lir.hsail;
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24
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25 import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*;
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26
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27 import com.oracle.graal.api.meta.*;
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28 import com.oracle.graal.asm.hsail.*;
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29 import com.oracle.graal.graph.*;
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30 import com.oracle.graal.lir.*;
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31 import com.oracle.graal.lir.asm.*;
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32 import com.oracle.graal.nodes.calc.*;
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33
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34 /**
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35 * Implementation of control flow instructions.
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36 */
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37 public class HSAILControlFlow {
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38
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39 public static class ReturnOp extends HSAILLIRInstruction {
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40
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41 @Use({REG, ILLEGAL}) protected Value x;
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42
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43 public ReturnOp(Value x) {
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44 this.x = x;
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45 }
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46
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47 @Override
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48 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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49 if (tasm.frameContext != null) {
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50 tasm.frameContext.leave(tasm);
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51 }
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52 masm.exit();
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53 }
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54 }
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55
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56
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57 public static class ForeignCallNoArgOp extends HSAILLIRInstruction {
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58
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59 @Def({REG}) protected Value out;
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60 String callName;
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61
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62 public ForeignCallNoArgOp(String callName, Value out) {
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63 this.out = out;
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64 this.callName = callName;
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65 }
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66
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67 @Override
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68 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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69 masm.emitComment("//ForeignCall to " + callName + " would have gone here");
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70 }
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71 }
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72
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73 public static class ForeignCall1ArgOp extends ForeignCallNoArgOp {
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74
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75 @Use({REG, ILLEGAL}) protected Value arg1;
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76
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77 public ForeignCall1ArgOp(String callName, Value out, Value arg1) {
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78 super(callName, out);
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79 this.arg1 = arg1;
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80 }
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81 }
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82
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83
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84 public static class CompareBranchOp extends HSAILLIRInstruction implements StandardOp.BranchOp {
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85
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86 @Opcode protected final HSAILCompare opcode;
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87 @Use({REG, CONST}) protected Value x;
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88 @Use({REG, CONST}) protected Value y;
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89 @Def({REG}) protected Value z;
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90 protected Condition condition;
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91 protected LabelRef destination;
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92 protected boolean unordered = false;
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93 @Def({REG}) protected Value result;
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94
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95 public CompareBranchOp(HSAILCompare opcode, Condition condition, Value x, Value y, Value z, Value result, LabelRef destination) {
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96 this.condition = condition;
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97 this.opcode = opcode;
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98 this.x = x;
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99 this.y = y;
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100 this.z = z;
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101 this.result = result;
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102 this.destination = destination;
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103 }
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104
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105 @Override
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106 public LabelRef destination() {
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107 return destination;
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108 }
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109
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110 @Override
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111 public void negate(LabelRef newDestination) {
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112 destination = newDestination;
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113 condition = condition.negate();
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114 }
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115
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116 @Override
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117 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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118 HSAILCompare.emit(tasm, masm, condition, x, y, z, unordered);
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119 masm.cbr(masm.nameOf(destination.label()));
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120 }
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121 }
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122
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123 public static class FloatCompareBranchOp extends CompareBranchOp {
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124
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125 public FloatCompareBranchOp(HSAILCompare opcode, Condition condition, Value x, Value y, Value z, Value result, LabelRef destination, boolean unordered) {
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126 super(opcode, condition, x, y, z, result, destination);
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127 this.unordered = unordered;
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128 }
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129
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130 @Override
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131 public void negate(LabelRef newDestination) {
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132 destination = newDestination;
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133 condition = condition.negate();
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134 unordered = !unordered;
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135 }
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136
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137 @Override
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138 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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139 HSAILCompare.emit(tasm, masm, condition, x, y, z, unordered);
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140 masm.cbr(masm.nameOf(destination.label()));
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141 }
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142 }
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143
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144 public static class DoubleCompareBranchOp extends CompareBranchOp {
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145
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146 public DoubleCompareBranchOp(HSAILCompare opcode, Condition condition, Value x, Value y, Value z, Value result, LabelRef destination, boolean unordered) {
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147 super(opcode, condition, x, y, z, result, destination);
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148 this.unordered = unordered;
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149 }
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150
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151 @Override
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152 public void negate(LabelRef newDestination) {
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153 destination = newDestination;
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154 condition = condition.negate();
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155 unordered = !unordered;
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156 }
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157
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158 @Override
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159 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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160 HSAILCompare.emit(tasm, masm, condition, x, y, z, unordered);
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161 masm.cbr(masm.nameOf(destination.label()));
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162 }
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163 }
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164
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165 public static class BranchOp extends HSAILLIRInstruction implements StandardOp.BranchOp {
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166
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167 protected Condition condition;
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168 protected LabelRef destination;
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169 @Def({REG}) protected Value result;
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170
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171 public BranchOp(Condition condition, Value result, LabelRef destination) {
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172 this.condition = condition;
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173 this.destination = destination;
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174 this.result = result;
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175 }
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176
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177 @Override
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178 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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179 masm.cbr(masm.nameOf(destination.label()));
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180 }
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181
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182 @Override
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183 public LabelRef destination() {
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184 return destination;
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185 }
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186
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187 @Override
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188 public void negate(LabelRef newDestination) {
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189 destination = newDestination;
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190 condition = condition.negate();
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191 }
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192 }
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193
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194 public static class FloatBranchOp extends BranchOp {
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195
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196 public FloatBranchOp(Condition condition, Value result, LabelRef destination) {
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197 super(condition, result, destination);
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198 }
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199
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200 @Override
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201 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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202 masm.cbr(masm.nameOf(destination.label()));
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203 }
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204 }
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205
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206 public static class CondMoveOp extends HSAILLIRInstruction {
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207
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208 @Opcode protected final HSAILCompare opcode;
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209 @Def({REG, HINT}) protected Value result;
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210 @Alive({REG}) protected Value trueValue;
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211 @Use({REG, STACK, CONST}) protected Value falseValue;
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212 @Use({REG, STACK, CONST}) protected Value left;
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213 @Use({REG, STACK, CONST}) protected Value right;
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214 protected final Condition condition;
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215
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216 public CondMoveOp(HSAILCompare opcode, Variable left, Variable right, Variable result, Condition condition, Variable trueValue, Value falseValue) {
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217 this.opcode = opcode;
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218 this.result = result;
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219 this.left = left;
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220 this.right = right;
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221 this.condition = condition;
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222 this.trueValue = trueValue;
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223 this.falseValue = falseValue;
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224 }
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225
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226 @Override
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227 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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228 HSAILCompare.emit(tasm, masm, condition, left, right, right, false);
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229 cmove(tasm, masm, result, false, trueValue, falseValue);
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230 }
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231 }
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232
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233 public static class FloatCondMoveOp extends CondMoveOp {
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234
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235 private final boolean unorderedIsTrue;
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236
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237 public FloatCondMoveOp(HSAILCompare opcode, Variable left, Variable right, Variable result, Condition condition, boolean unorderedIsTrue, Variable trueValue, Value falseValue) {
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238 super(opcode, left, right, result, condition, trueValue, falseValue);
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239 this.unorderedIsTrue = unorderedIsTrue;
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240 }
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241
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242 @Override
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243 public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
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244 HSAILCompare.emit(tasm, masm, condition, left, right, right, unorderedIsTrue);
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245 cmove(tasm, masm, result, false, trueValue, falseValue);
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246 }
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247 }
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248
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249 @SuppressWarnings("unused")
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250 private static void cmove(TargetMethodAssembler tasm, HSAILAssembler masm, Value result, boolean unorderedIsTrue, Value trueValue, Value falseValue) {
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251 // Check that we don't overwrite an input operand before it is used.
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252 assert (result.getKind() == trueValue.getKind() && result.getKind() == falseValue.getKind());
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253 int width;
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254 switch (result.getKind()) {
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255 /**
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256 * We don't need to pass the cond to the assembler. We will always use $c0 as the control
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257 * register.
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258 */
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259 case Float:
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260 case Int:
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261 width = 32;
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262 break;
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263 case Double:
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264 case Long:
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265 width = 64;
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266 break;
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267 default:
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268 throw GraalInternalError.shouldNotReachHere();
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269 }
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270 masm.cmovCommon(result, trueValue, falseValue, width);
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271 }
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272 }