Mercurial > hg > graal-compiler
annotate graal/GraalCompiler/src/com/sun/c1x/ir/IRScope.java @ 2546:e1b3db8031ee
Removed liveness marking.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 21:54:31 +0200 |
parents | 16b9a8b5ad39 |
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rev | line source |
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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.ir; |
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24 |
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25 import com.sun.c1x.value.*; |
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26 import com.sun.cri.ci.*; |
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27 import com.sun.cri.ri.*; |
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28 |
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29 /** |
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30 * The {@code IRScope} class represents an inlining context in the compilation |
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31 * of a method. |
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32 * |
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33 * @author Ben L. Titzer |
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34 */ |
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35 public class IRScope { |
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36 |
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37 public final IRScope caller; |
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38 public final RiMethod method; |
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39 public final int level; |
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40 CiCodePos callerCodePos; |
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41 |
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42 /** |
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43 * The frame state at the call site of this scope's caller or {@code null} |
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44 * if this is not a nested scope. |
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45 */ |
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46 public final FrameState callerState; |
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47 |
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48 /** |
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49 * The maximum number of locks held in this scope at any one time |
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50 * (c.f. maxStack and maxLocals of the Code attribute in a class file). |
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51 */ |
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52 int maxLocks; |
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53 |
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54 CiBitMap storesInLoops; |
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55 |
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56 public IRScope(IRScope caller, FrameState callerState, RiMethod method, int osrBCI) { |
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57 this.caller = caller; |
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58 this.callerState = callerState; |
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59 this.method = method; |
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60 this.level = caller == null ? 0 : 1 + caller.level; |
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61 } |
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62 |
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63 /** |
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64 * Updates the maximum number of locks held in this scope at any one time. |
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65 * |
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66 * @param locks a lock count that will replace the current {@linkplain #maxLocks() max locks} for this scope if it is greater |
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67 */ |
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68 public void updateMaxLocks(int locks) { |
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69 if (locks > maxLocks) { |
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70 maxLocks = locks; |
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71 } |
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72 } |
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73 |
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74 /** |
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75 * Gets the number of locks in this IR scope. |
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76 * @return the number of locks |
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77 */ |
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78 public final int maxLocks() { |
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79 return maxLocks; |
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80 } |
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81 |
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82 /** |
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83 * Gets the bytecode index of the call site that called this method. |
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84 * @return the call site's bytecode index |
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85 */ |
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86 public final int callerBCI() { |
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87 return callerState == null ? -1 : callerState.bci; |
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88 } |
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89 |
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90 /** |
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91 * Returns whether this IR scope is the top scope (i.e. has no caller). |
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92 * @return {@code true} if this inlining scope has no parent |
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93 */ |
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94 public final boolean isTopScope() { |
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95 return caller == null; |
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96 } |
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97 |
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98 /** |
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99 * Gets the phi bitmap for this IR scope. The phi bitmap stores |
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100 * whether a phi instruction is required for each local variable. |
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101 * @return the phi bitmap for this IR scope |
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102 */ |
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103 public final CiBitMap getStoresInLoops() { |
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104 return storesInLoops; |
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105 } |
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106 |
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107 public final void setStoresInLoops(CiBitMap storesInLoops) { |
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108 this.storesInLoops = storesInLoops; |
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109 } |
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110 |
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111 @Override |
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112 public String toString() { |
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113 if (caller == null) { |
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114 return "root-scope: " + method; |
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115 } else { |
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116 return "inlined-scope: " + method + " [caller bci: " + callerState.bci + "]"; |
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117 } |
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118 } |
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119 |
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120 public CiCodePos callerCodePos() { |
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121 if (caller != null && callerCodePos == null) { |
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122 callerCodePos = caller.toCodePos(callerBCI()); |
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123 } |
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124 return callerCodePos; |
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125 } |
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126 |
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127 public CiCodePos toCodePos(int bci) { |
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Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
128 return new CiCodePos(callerCodePos(), method, bci); |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
129 } |
9ec15d6914ca
Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff
changeset
|
130 } |