Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/lir/LIRAssembler.java @ 2660:9f557e940180
Removed exception optimization that immediately unwinds if it is guaranteed that there is no local exception handler.
Reason to remove the optimization: In case of a local exception handler that has been really executed, we need a type check on the exception object and a conditional jump from the throw anyway.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 11 May 2011 16:40:22 +0200 |
parents | 91d3952f7eb7 |
children | 0ea5f12e873a |
rev | line source |
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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.lir; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.sun.c1x.*; |
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28 import com.sun.c1x.asm.*; |
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29 import com.sun.c1x.debug.*; |
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30 import com.sun.c1x.gen.*; |
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31 import com.sun.c1x.ir.*; |
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32 import com.sun.c1x.lir.FrameMap.StackBlock; |
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33 import com.sun.c1x.util.*; |
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34 import com.sun.cri.ci.*; |
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35 import com.sun.cri.ci.CiTargetMethod.Mark; |
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36 import com.sun.cri.ri.*; |
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37 import com.sun.cri.xir.CiXirAssembler.XirMark; |
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38 |
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39 /** |
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40 * The {@code LIRAssembler} class definition. |
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41 * |
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42 * @author Marcelo Cintra |
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43 * @author Thomas Wuerthinger |
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44 * @author Ben L. Titzer |
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45 */ |
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46 public abstract class LIRAssembler { |
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47 |
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48 public final C1XCompilation compilation; |
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49 public final AbstractAssembler asm; |
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50 public final FrameMap frameMap; |
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51 public int registerRestoreEpilogueOffset = -1; |
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52 |
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53 protected final List<SlowPath> xirSlowPath; |
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54 protected final List<BlockBegin> branchTargetBlocks; |
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55 |
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56 private int lastDecodeStart; |
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57 |
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58 protected static class SlowPath { |
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59 public final LIRXirInstruction instruction; |
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60 public final Label[] labels; |
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61 public final Map<XirMark, Mark> marks; |
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62 |
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63 public SlowPath(LIRXirInstruction instruction, Label[] labels, Map<XirMark, Mark> marks) { |
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64 this.instruction = instruction; |
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65 this.labels = labels; |
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66 this.marks = marks; |
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67 } |
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68 } |
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69 |
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70 public LIRAssembler(C1XCompilation compilation) { |
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71 this.compilation = compilation; |
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72 this.asm = compilation.masm(); |
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73 this.frameMap = compilation.frameMap(); |
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74 this.branchTargetBlocks = new ArrayList<BlockBegin>(); |
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75 this.xirSlowPath = new ArrayList<SlowPath>(); |
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76 } |
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77 |
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78 protected RiMethod method() { |
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79 return compilation.method; |
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80 } |
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81 |
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82 protected void addSlowPath(SlowPath sp) { |
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83 xirSlowPath.add(sp); |
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84 } |
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85 |
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86 public void emitLocalStubs() { |
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87 for (SlowPath sp : xirSlowPath) { |
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88 emitSlowPath(sp); |
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89 } |
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90 |
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91 // No more code may be emitted after this point |
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92 } |
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93 |
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94 protected int codePos() { |
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95 return asm.codeBuffer.position(); |
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96 } |
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97 |
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98 public abstract void emitTraps(); |
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99 |
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100 public void emitExceptionEntries() { |
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101 if (asm.exceptionInfoList == null) { |
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102 return; |
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103 } |
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104 for (ExceptionInfo ilist : asm.exceptionInfoList) { |
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105 List<ExceptionHandler> handlers = ilist.exceptionHandlers; |
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106 |
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107 for (ExceptionHandler handler : handlers) { |
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108 assert handler.lirOpId() != -1 : "handler not processed by LinearScan"; |
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109 assert handler.entryCode() == null || handler.entryCode().instructionsList().get(handler.entryCode().instructionsList().size() - 1).code == LIROpcode.Branch : "last operation must be branch"; |
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110 |
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111 if (handler.entryCodeOffset() == -1) { |
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112 // entry code not emitted yet |
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113 if (handler.entryCode() != null && handler.entryCode().instructionsList().size() > 1) { |
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114 handler.setEntryCodeOffset(codePos()); |
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115 if (C1XOptions.CommentedAssembly) { |
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116 asm.blockComment("Exception adapter block"); |
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117 } |
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118 emitLirList(handler.entryCode()); |
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119 } else { |
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120 handler.setEntryCodeOffset(handler.entryBlock().exceptionHandlerPco()); |
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121 } |
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122 |
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123 assert handler.entryCodeOffset() != -1 : "must be set now"; |
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124 } |
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125 } |
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126 } |
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127 } |
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128 |
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129 public void emitCode(List<BlockBegin> hir) { |
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130 if (C1XOptions.PrintLIR && !TTY.isSuppressed()) { |
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131 LIRList.printLIR(hir); |
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132 } |
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133 |
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134 for (BlockBegin b : hir) { |
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135 emitBlock(b); |
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136 } |
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137 |
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138 assert checkNoUnboundLabels(); |
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139 } |
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140 |
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141 void emitBlock(BlockBegin block) { |
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142 if (block.checkBlockFlag(BlockBegin.BlockFlag.BackwardBranchTarget)) { |
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143 emitAlignment(); |
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144 } |
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145 |
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146 // if this block is the start of an exception handler, record the |
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147 // PC offset of the first instruction for later construction of |
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148 // the ExceptionHandlerTable |
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149 if (block.checkBlockFlag(BlockBegin.BlockFlag.ExceptionEntry)) { |
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150 block.setExceptionHandlerPco(codePos()); |
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151 } |
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152 |
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153 if (C1XOptions.PrintLIRWithAssembly) { |
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154 block.printWithoutPhis(TTY.out()); |
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155 } |
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156 |
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157 assert block.lir() != null : "must have LIR"; |
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158 if (C1XOptions.CommentedAssembly) { |
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159 String st = String.format(" block B%d [%d, %d]", block.blockID, block.bci(), block.end().bci()); |
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160 asm.blockComment(st); |
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161 } |
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162 |
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163 emitLirList(block.lir()); |
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164 } |
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165 |
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166 void emitLirList(LIRList list) { |
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167 doPeephole(list); |
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168 |
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169 for (LIRInstruction op : list.instructionsList()) { |
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170 if (C1XOptions.CommentedAssembly) { |
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171 // Only print out branches |
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172 if (op.code == LIROpcode.Branch) { |
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173 asm.blockComment(op.toStringWithIdPrefix()); |
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174 } |
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175 } |
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176 if (C1XOptions.PrintLIRWithAssembly && !TTY.isSuppressed()) { |
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177 // print out the LIR operation followed by the resulting assembly |
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178 TTY.println(op.toStringWithIdPrefix()); |
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179 TTY.println(); |
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180 } |
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181 |
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182 op.emitCode(this); |
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183 |
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184 if (C1XOptions.PrintLIRWithAssembly) { |
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185 printAssembly(asm); |
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186 } |
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187 } |
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188 } |
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189 |
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190 private void printAssembly(AbstractAssembler asm) { |
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191 byte[] currentBytes = asm.codeBuffer.copyData(lastDecodeStart, asm.codeBuffer.position()); |
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192 if (currentBytes.length > 0) { |
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193 String disasm = compilation.runtime.disassemble(currentBytes, lastDecodeStart); |
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194 if (disasm.length() != 0) { |
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195 TTY.println(disasm); |
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196 } else { |
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197 TTY.println("Code [+%d]: %d bytes", lastDecodeStart, currentBytes.length); |
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198 Util.printBytes(lastDecodeStart, currentBytes, C1XOptions.PrintAssemblyBytesPerLine); |
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199 } |
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200 } |
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201 lastDecodeStart = asm.codeBuffer.position(); |
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202 } |
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203 |
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204 boolean checkNoUnboundLabels() { |
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205 for (int i = 0; i < branchTargetBlocks.size() - 1; i++) { |
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206 if (!branchTargetBlocks.get(i).label().isBound()) { |
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207 TTY.println(String.format("label of block B%d is not bound", branchTargetBlocks.get(i).blockID)); |
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208 assert false : "unbound label"; |
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209 } |
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210 } |
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211 |
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212 return true; |
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213 } |
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214 |
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215 void emitCall(LIRCall op) { |
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216 verifyOopMap(op.info); |
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217 |
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218 switch (op.code) { |
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219 case DirectCall: |
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220 emitCallAlignment(op.code); |
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221 // fall through |
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222 case ConstDirectCall: |
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223 if (op.marks != null) { |
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224 op.marks.put(XirMark.CALLSITE, asm.recordMark(null, new Mark[0])); |
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225 } |
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226 emitDirectCall(op.target, op.info); |
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227 break; |
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228 case IndirectCall: |
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229 emitCallAlignment(op.code); |
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230 if (op.marks != null) { |
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231 op.marks.put(XirMark.CALLSITE, asm.recordMark(null, new Mark[0])); |
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232 } |
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233 emitIndirectCall(op.target, op.info, op.targetAddress()); |
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234 break; |
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235 case NativeCall: { |
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236 emitNativeCall((String) op.target, op.info, op.targetAddress()); |
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237 break; |
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238 } |
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239 case TemplateCall: { |
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240 emitTemplateCall(op.targetAddress()); |
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241 break; |
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242 } |
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243 default: |
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244 throw Util.shouldNotReachHere(); |
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245 } |
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246 } |
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247 |
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248 void emitOpLabel(LIRLabel op) { |
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249 asm.bind(op.label()); |
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250 } |
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251 |
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252 void emitOp1(LIROp1 op) { |
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253 switch (op.code) { |
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254 case Move: |
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255 if (op.moveKind() == LIROp1.LIRMoveKind.Volatile) { |
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256 emitVolatileMove(op.operand(), op.result(), op.kind, op.info); |
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257 } else { |
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258 moveOp(op.operand(), op.result(), op.kind, op.info, op.moveKind() == LIROp1.LIRMoveKind.Unaligned); |
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259 } |
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260 break; |
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261 case Prefetchr: |
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262 emitReadPrefetch(op.operand()); |
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263 break; |
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264 case Prefetchw: |
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265 emitReadPrefetch(op.operand()); |
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266 break; |
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267 case Return: |
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268 emitReturn(op.operand()); |
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269 break; |
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270 case Neg: |
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271 emitNegate((LIRNegate) op); |
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272 break; |
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273 case Lea: |
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274 emitLea(op.operand(), op.result()); |
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275 break; |
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276 case NullCheck: |
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277 assert op.operand().isRegister(); |
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278 if (C1XOptions.NullCheckUniquePc) { |
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279 asm.nop(); |
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280 } |
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281 asm.recordImplicitException(codePos(), op.info); |
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282 asm.nullCheck(op.operand().asRegister()); |
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283 break; |
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284 case Lsb: |
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285 emitSignificantBitOp(false, op.operand(), op.result()); |
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286 break; |
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287 case Msb: |
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288 emitSignificantBitOp(true, op.operand(), op.result()); |
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289 break; |
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290 default: |
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291 throw Util.shouldNotReachHere(); |
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292 } |
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293 } |
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294 |
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295 public void emitOp0(LIROp0 op) { |
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296 switch (op.code) { |
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297 case Label: |
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298 throw Util.shouldNotReachHere(); |
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299 case OsrEntry: |
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300 emitOsrEntry(); |
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301 break; |
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302 case Here: |
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303 emitHere(op.result(), op.info, false); |
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304 break; |
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305 case Info: |
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306 emitHere(op.result(), op.info, true); |
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307 break; |
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308 case Pause: |
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309 emitPause(); |
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310 break; |
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311 case Breakpoint: |
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312 emitBreakpoint(); |
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313 break; |
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314 default: |
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315 throw Util.shouldNotReachHere(); |
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316 } |
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317 } |
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318 |
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319 protected void emitOp2(LIROp2 op) { |
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320 switch (op.code) { |
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321 case Cmp: |
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322 emitCompare(op.condition(), op.operand1(), op.operand2(), op); |
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323 break; |
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324 |
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325 case Cmpl2i: |
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326 case Cmpfd2i: |
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327 case Ucmpfd2i: |
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328 emitCompare2Int(op.code, op.operand1(), op.operand2(), op.result(), op); |
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329 break; |
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330 |
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331 case Cmove: |
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332 emitConditionalMove(op.condition(), op.operand1(), op.operand2(), op.result()); |
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333 break; |
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334 |
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335 case Shl: |
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336 case Shr: |
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337 case Ushr: |
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338 if (op.operand2().isConstant()) { |
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339 emitShiftOp(op.code, op.operand1(), ((CiConstant) op.operand2()).asInt(), op.result()); |
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340 } else { |
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341 emitShiftOp(op.code, op.operand1(), op.operand2(), op.result(), op.tmp()); |
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342 } |
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343 break; |
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344 |
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345 case Add: |
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346 case Sub: |
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347 case Mul: |
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348 case Div: |
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349 case Rem: |
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350 emitArithOp(op.code, op.operand1(), op.operand2(), op.result(), op.info); |
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351 break; |
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352 |
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353 case Abs: |
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354 case Sqrt: |
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355 case Sin: |
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356 case Tan: |
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357 case Cos: |
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358 case Log: |
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359 case Log10: |
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360 emitIntrinsicOp(op.code, op.operand1(), op.operand2(), op.result(), op); |
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361 break; |
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362 |
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363 case LogicAnd: |
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364 case LogicOr: |
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365 case LogicXor: |
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366 emitLogicOp(op.code, op.operand1(), op.operand2(), op.result()); |
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367 break; |
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368 |
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369 case Throw: |
2660
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370 emitThrow(op.operand1(), op.operand2(), op.info); |
2507
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371 break; |
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372 |
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373 default: |
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374 throw Util.shouldNotReachHere(); |
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375 } |
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376 } |
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377 |
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378 public void moveOp(CiValue src, CiValue dest, CiKind kind, LIRDebugInfo info, boolean unaligned) { |
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379 if (src.isRegister()) { |
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380 if (dest.isRegister()) { |
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381 assert info == null : "no patching and info allowed here"; |
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382 reg2reg(src, dest); |
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383 } else if (dest.isStackSlot()) { |
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384 assert info == null : "no patching and info allowed here"; |
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385 reg2stack(src, dest, kind); |
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386 } else if (dest.isAddress()) { |
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387 reg2mem(src, dest, kind, info, unaligned); |
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388 } else { |
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389 throw Util.shouldNotReachHere(); |
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390 } |
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391 |
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392 } else if (src.isStackSlot()) { |
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393 assert info == null : "no patching and info allowed here"; |
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394 if (dest.isRegister()) { |
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395 stack2reg(src, dest, kind); |
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396 } else if (dest.isStackSlot()) { |
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397 stack2stack(src, dest, kind); |
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398 } else { |
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399 throw Util.shouldNotReachHere(); |
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400 } |
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401 |
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402 } else if (src.isConstant()) { |
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403 if (dest.isRegister()) { |
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404 const2reg(src, dest, info); // patching is possible |
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405 } else if (dest.isStackSlot()) { |
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406 assert info == null : "no patching and info allowed here"; |
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407 const2stack(src, dest); |
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408 } else if (dest.isAddress()) { |
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409 const2mem(src, dest, kind, info); |
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410 } else { |
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411 throw Util.shouldNotReachHere(); |
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412 } |
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413 |
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414 } else if (src.isAddress()) { |
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415 if (dest.isStackSlot()) { |
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416 assert info == null && !unaligned; |
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417 mem2stack(src, dest, kind); |
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418 } else if (dest.isAddress()) { |
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419 assert info == null && !unaligned; |
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420 mem2mem(src, dest, kind); |
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421 } else { |
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422 mem2reg(src, dest, kind, info, unaligned); |
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423 } |
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424 |
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425 } else { |
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426 throw Util.shouldNotReachHere(src.toString() + ", dest=" + dest.toString() + ", " + kind); |
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427 } |
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428 } |
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429 |
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430 public void verifyOopMap(LIRDebugInfo info) { |
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431 if (C1XOptions.VerifyPointerMaps) { |
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432 // TODO: verify oops |
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433 Util.shouldNotReachHere(); |
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434 } |
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435 } |
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436 |
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437 protected abstract int initialFrameSizeInBytes(); |
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438 |
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439 protected abstract void doPeephole(LIRList list); |
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440 |
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441 protected abstract void emitSlowPath(SlowPath sp); |
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442 |
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443 public abstract void emitDeoptizationStub(LIRGenerator.DeoptimizationStub stub); |
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444 |
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445 protected abstract void emitAlignment(); |
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446 |
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447 protected abstract void emitBreakpoint(); |
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448 |
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449 protected abstract void emitLea(CiValue src, CiValue dst); |
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450 |
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451 protected abstract void emitNegate(LIRNegate negate); |
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452 |
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453 protected abstract void emitHere(CiValue dst, LIRDebugInfo info, boolean infoOnly); |
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454 |
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455 protected abstract void emitMonitorAddress(int monitor, CiValue dst); |
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456 |
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457 protected abstract void emitPause(); |
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458 |
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459 protected abstract void emitStackAllocate(StackBlock src, CiValue dst); |
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460 |
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461 protected abstract void emitReturn(CiValue inOpr); |
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462 |
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463 protected abstract void emitReadPrefetch(CiValue inOpr); |
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464 |
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465 protected abstract void emitVolatileMove(CiValue inOpr, CiValue result, CiKind kind, LIRDebugInfo info); |
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466 |
2660
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467 protected abstract void emitThrow(CiValue inOpr1, CiValue inOpr2, LIRDebugInfo info); |
2507
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468 |
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469 protected abstract void emitLogicOp(LIROpcode code, CiValue inOpr1, CiValue inOpr2, CiValue dst); |
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470 |
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471 protected abstract void emitIntrinsicOp(LIROpcode code, CiValue inOpr1, CiValue inOpr2, CiValue dst, LIROp2 op); |
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472 |
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473 protected abstract void emitArithOp(LIROpcode code, CiValue inOpr1, CiValue inOpr2, CiValue dst, LIRDebugInfo info); |
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474 |
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475 protected abstract void emitShiftOp(LIROpcode code, CiValue inOpr1, CiValue inOpr2, CiValue dst, CiValue tmpOpr); |
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476 |
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477 protected abstract void emitShiftOp(LIROpcode code, CiValue inOpr1, int asJint, CiValue dst); |
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478 |
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479 protected abstract void emitSignificantBitOp(boolean most, CiValue inOpr1, CiValue dst); |
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480 |
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481 protected abstract void emitConditionalMove(Condition condition, CiValue inOpr1, CiValue inOpr2, CiValue dst); |
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482 |
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483 protected abstract void emitCompare2Int(LIROpcode code, CiValue inOpr1, CiValue inOpr2, CiValue dst, LIROp2 op); |
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484 |
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485 protected abstract void emitCompare(Condition condition, CiValue inOpr1, CiValue inOpr2, LIROp2 op); |
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486 |
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487 protected abstract void emitBranch(LIRBranch branch); |
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488 |
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489 protected abstract void emitTableSwitch(LIRTableSwitch tableSwitch); |
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490 |
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491 protected abstract void emitConvert(LIRConvert convert); |
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492 |
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493 protected abstract void emitOp3(LIROp3 op3); |
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494 |
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495 protected abstract void emitCompareAndSwap(LIRCompareAndSwap compareAndSwap); |
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496 |
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497 protected abstract void emitXir(LIRXirInstruction xirInstruction); |
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498 |
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499 protected abstract void emitIndirectCall(Object target, LIRDebugInfo info, CiValue callAddress); |
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500 |
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501 protected abstract void emitDirectCall(Object target, LIRDebugInfo info); |
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502 |
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503 protected abstract void emitNativeCall(String symbol, LIRDebugInfo info, CiValue callAddress); |
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504 |
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505 protected abstract void emitTemplateCall(CiValue address); |
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506 |
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507 protected abstract void emitCallAlignment(LIROpcode code); |
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|
508 |
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509 protected abstract void emitMemoryBarriers(int barriers); |
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510 |
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511 protected abstract void emitOsrEntry(); |
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512 |
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513 protected abstract void reg2stack(CiValue src, CiValue dest, CiKind kind); |
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514 |
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515 protected abstract void reg2mem(CiValue src, CiValue dest, CiKind kind, LIRDebugInfo info, boolean unaligned); |
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516 |
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517 protected abstract void mem2reg(CiValue src, CiValue dest, CiKind kind, LIRDebugInfo info, boolean unaligned); |
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518 |
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519 protected abstract void const2mem(CiValue src, CiValue dest, CiKind kind, LIRDebugInfo info); |
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520 |
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521 protected abstract void const2stack(CiValue src, CiValue dest); |
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522 |
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523 protected abstract void const2reg(CiValue src, CiValue dest, LIRDebugInfo info); |
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524 |
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525 protected abstract void mem2stack(CiValue src, CiValue dest, CiKind kind); |
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526 |
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527 protected abstract void mem2mem(CiValue src, CiValue dest, CiKind kind); |
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528 |
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529 protected abstract void stack2stack(CiValue src, CiValue dest, CiKind kind); |
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530 |
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531 protected abstract void stack2reg(CiValue src, CiValue dest, CiKind kind); |
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532 |
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533 protected abstract void reg2reg(CiValue src, CiValue dest); |
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534 |
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535 } |