1 /* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_OPTO_PHASE_HPP 26 #define SHARE_VM_OPTO_PHASE_HPP 27 28 #include "libadt/port.hpp" 29 #include "runtime/timer.hpp" 30 31 class Compile; 32 33 //------------------------------Phase------------------------------------------ 34 // Most optimizations are done in Phases. Creating a phase does any long 35 // running analysis required, and caches the analysis in internal data 36 // structures. Later the analysis is queried using transform() calls to 37 // guide transforming the program. When the Phase is deleted, so is any 38 // cached analysis info. This basic Phase class mostly contains timing and 39 // memory management code. 40 class Phase : public StackObj { 41 public: 42 enum PhaseNumber { 43 Compiler, // Top-level compiler phase 44 Parser, // Parse bytecodes 45 Remove_Useless, // Remove useless nodes 46 Optimistic, // Optimistic analysis phase 47 GVN, // Pessimistic global value numbering phase 48 Ins_Select, // Instruction selection phase 49 CFG, // Build a CFG 50 BlockLayout, // Linear ordering of blocks 51 Register_Allocation, // Register allocation, duh 52 LIVE, // Dragon-book LIVE range problem 53 StringOpts, // StringBuilder related optimizations 54 Interference_Graph, // Building the IFG 55 Coalesce, // Coalescing copies 56 Ideal_Loop, // Find idealized trip-counted loops 57 Macro_Expand, // Expand macro nodes 58 Peephole, // Apply peephole optimizations 59 last_phase 60 }; 61 protected: 62 enum PhaseNumber _pnum; // Phase number (for stat gathering) 63 64 #ifndef PRODUCT 65 static int _total_bytes_compiled; 66 67 // accumulated timers 68 static elapsedTimer _t_totalCompilation; 69 static elapsedTimer _t_methodCompilation; 70 static elapsedTimer _t_stubCompilation; 71 #endif 72 73 // The next timers used for LogCompilation 74 static elapsedTimer _t_parser; 75 static elapsedTimer _t_escapeAnalysis; 76 static elapsedTimer _t_optimizer; 77 static elapsedTimer _t_idealLoop; 78 static elapsedTimer _t_ccp; 79 static elapsedTimer _t_matcher; 80 static elapsedTimer _t_registerAllocation; 81 static elapsedTimer _t_output; 82 83 #ifndef PRODUCT 84 static elapsedTimer _t_graphReshaping; 85 static elapsedTimer _t_scheduler; 86 static elapsedTimer _t_blockOrdering; 87 static elapsedTimer _t_macroExpand; 88 static elapsedTimer _t_peephole; 89 static elapsedTimer _t_codeGeneration; 90 static elapsedTimer _t_registerMethod; 91 static elapsedTimer _t_temporaryTimer1; 92 static elapsedTimer _t_temporaryTimer2; 93 static elapsedTimer _t_idealLoopVerify; 94 95 // Subtimers for _t_optimizer 96 static elapsedTimer _t_iterGVN; 97 static elapsedTimer _t_iterGVN2; 98 99 // Subtimers for _t_registerAllocation 100 static elapsedTimer _t_ctorChaitin; 101 static elapsedTimer _t_buildIFGphysical; 102 static elapsedTimer _t_computeLive; 103 static elapsedTimer _t_regAllocSplit; 104 static elapsedTimer _t_postAllocCopyRemoval; 105 static elapsedTimer _t_fixupSpills; 106 107 // Subtimers for _t_output 108 static elapsedTimer _t_instrSched; 109 static elapsedTimer _t_buildOopMaps; 110 #endif 111 public: 112 Compile * C; 113 Phase( PhaseNumber pnum ); 114 #ifndef PRODUCT 115 static void print_timers(); 116 #endif 117 }; 118 119 #endif // SHARE_VM_OPTO_PHASE_HPP