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1 /*
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2 * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 class Compile;
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26
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27 //------------------------------Phase------------------------------------------
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28 // Most optimizations are done in Phases. Creating a phase does any long
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29 // running analysis required, and caches the analysis in internal data
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30 // structures. Later the analysis is queried using transform() calls to
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31 // guide transforming the program. When the Phase is deleted, so is any
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32 // cached analysis info. This basic Phase class mostly contains timing and
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33 // memory management code.
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34 class Phase : public StackObj {
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35 public:
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36 enum PhaseNumber {
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37 Compiler, // Top-level compiler phase
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38 Parser, // Parse bytecodes
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39 Remove_Useless, // Remove useless nodes
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40 Optimistic, // Optimistic analysis phase
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41 GVN, // Pessimistic global value numbering phase
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42 Ins_Select, // Instruction selection phase
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43 Copy_Elimination, // Copy Elimination
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44 Dead_Code_Elimination, // DCE and compress Nodes
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45 Conditional_Constant, // Conditional Constant Propagation
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46 CFG, // Build a CFG
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47 DefUse, // Build Def->Use chains
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48 Register_Allocation, // Register allocation, duh
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49 LIVE, // Dragon-book LIVE range problem
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50 Interference_Graph, // Building the IFG
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51 Coalesce, // Coalescing copies
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52 Conditional_CProp, // Conditional Constant Propagation
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53 Ideal_Loop, // Find idealized trip-counted loops
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54 Macro_Expand, // Expand macro nodes
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55 Peephole, // Apply peephole optimizations
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56 last_phase
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57 };
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58 protected:
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59 enum PhaseNumber _pnum; // Phase number (for stat gathering)
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60
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61 #ifndef PRODUCT
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62 static int _total_bytes_compiled;
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63
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64 // accumulated timers
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65 static elapsedTimer _t_totalCompilation;
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66 static elapsedTimer _t_methodCompilation;
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67 static elapsedTimer _t_stubCompilation;
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68 #endif
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69
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70 // The next timers used for LogCompilation
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71 static elapsedTimer _t_parser;
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72 static elapsedTimer _t_escapeAnalysis;
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73 static elapsedTimer _t_optimizer;
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74 static elapsedTimer _t_idealLoop;
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75 static elapsedTimer _t_ccp;
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76 static elapsedTimer _t_matcher;
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77 static elapsedTimer _t_registerAllocation;
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78 static elapsedTimer _t_output;
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79
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80 #ifndef PRODUCT
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81 static elapsedTimer _t_graphReshaping;
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82 static elapsedTimer _t_scheduler;
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83 static elapsedTimer _t_removeEmptyBlocks;
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84 static elapsedTimer _t_macroExpand;
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85 static elapsedTimer _t_peephole;
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86 static elapsedTimer _t_codeGeneration;
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87 static elapsedTimer _t_registerMethod;
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88 static elapsedTimer _t_temporaryTimer1;
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89 static elapsedTimer _t_temporaryTimer2;
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90
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91 // Subtimers for _t_optimizer
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92 static elapsedTimer _t_iterGVN;
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93 static elapsedTimer _t_iterGVN2;
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94
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95 // Subtimers for _t_registerAllocation
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96 static elapsedTimer _t_ctorChaitin;
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97 static elapsedTimer _t_buildIFGphysical;
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98 static elapsedTimer _t_computeLive;
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99 static elapsedTimer _t_regAllocSplit;
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100 static elapsedTimer _t_postAllocCopyRemoval;
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101 static elapsedTimer _t_fixupSpills;
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102
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103 // Subtimers for _t_output
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104 static elapsedTimer _t_instrSched;
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105 static elapsedTimer _t_buildOopMaps;
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106 #endif
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107 public:
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108 Compile * C;
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109 Phase( PhaseNumber pnum );
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110 #ifndef PRODUCT
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111 static void print_timers();
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112 #endif
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113 };
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