1 /*
2 * Copyright (c) 1997, 2013, 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 "runtime/timer.hpp"
29
30 class Compile;
31
32 //------------------------------Phase------------------------------------------
33 // Most optimizations are done in Phases. Creating a phase does any long
34 // running analysis required, and caches the analysis in internal data
35 // structures. Later the analysis is queried using transform() calls to
36 // guide transforming the program. When the Phase is deleted, so is any
37 // cached analysis info. This basic Phase class mostly contains timing and
38 // memory management code.
39 class Phase : public StackObj {
40 public:
41 enum PhaseNumber {
42 Compiler, // Top-level compiler phase
43 Parser, // Parse bytecodes
44 Remove_Useless, // Remove useless nodes
45 Optimistic, // Optimistic analysis phase
46 GVN, // Pessimistic global value numbering phase
47 Ins_Select, // Instruction selection phase
48 CFG, // Build a CFG
49 BlockLayout, // Linear ordering of blocks
50 Register_Allocation, // Register allocation, duh
51 LIVE, // Dragon-book LIVE range problem
52 StringOpts, // StringBuilder related optimizations
53 Interference_Graph, // Building the IFG
54 Coalesce, // Coalescing copies
55 Ideal_Loop, // Find idealized trip-counted loops
56 Macro_Expand, // Expand macro nodes
57 Peephole, // Apply peephole optimizations
58 last_phase
59 };
60 protected:
61 enum PhaseNumber _pnum; // Phase number (for stat gathering)
62
63 #ifndef PRODUCT
64 static int _total_bytes_compiled;
65
66 // accumulated timers
67 static elapsedTimer _t_totalCompilation;
68 static elapsedTimer _t_methodCompilation;
69 static elapsedTimer _t_stubCompilation;
70 #endif
71
72 // The next timers used for LogCompilation
73 static elapsedTimer _t_parser;
74 static elapsedTimer _t_optimizer;
75 public:
76 // ConnectionGraph can't be Phase since it is used after EA done.
77 static elapsedTimer _t_escapeAnalysis;
78 static elapsedTimer _t_connectionGraph;
79 protected:
80 static elapsedTimer _t_idealLoop;
81 static elapsedTimer _t_ccp;
82 static elapsedTimer _t_matcher;
83 static elapsedTimer _t_registerAllocation;
84 static elapsedTimer _t_output;
85
86 #ifndef PRODUCT
87 static elapsedTimer _t_graphReshaping;
88 static elapsedTimer _t_scheduler;
89 static elapsedTimer _t_blockOrdering;
90 static elapsedTimer _t_macroEliminate;
91 static elapsedTimer _t_macroExpand;
92 static elapsedTimer _t_peephole;
93 static elapsedTimer _t_postalloc_expand;
94 static elapsedTimer _t_codeGeneration;
95 static elapsedTimer _t_registerMethod;
96 static elapsedTimer _t_temporaryTimer1;
97 static elapsedTimer _t_temporaryTimer2;
98 static elapsedTimer _t_idealLoopVerify;
99
100 // Subtimers for _t_optimizer
101 static elapsedTimer _t_iterGVN;
102 static elapsedTimer _t_iterGVN2;
103 static elapsedTimer _t_incrInline;
104
105 // Subtimers for _t_registerAllocation
106 static elapsedTimer _t_ctorChaitin;
107 static elapsedTimer _t_buildIFGphysical;
108 static elapsedTimer _t_computeLive;
109 static elapsedTimer _t_regAllocSplit;
110 static elapsedTimer _t_postAllocCopyRemoval;
111 static elapsedTimer _t_fixupSpills;
112
113 // Subtimers for _t_output
114 static elapsedTimer _t_instrSched;
115 static elapsedTimer _t_buildOopMaps;
116 #endif
117 public:
118 Compile * C;
119 Phase( PhaseNumber pnum );
120 #ifndef PRODUCT
121 static void print_timers();
122 #endif
123 };
124
125 #endif // SHARE_VM_OPTO_PHASE_HPP