Mon, 25 May 2020 14:24:27 +0800
8244407: JVM crashes after transformation in C2 IdealLoopTree::split_fall_in
Reviewed-by: thartmann, kvn, andrew
Contributed-by: zhouyong44@huawei.com
1 /*
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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
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12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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23 */
25 #ifndef SHARE_VM_OPTO_PHASE_HPP
26 #define SHARE_VM_OPTO_PHASE_HPP
28 #include "libadt/port.hpp"
29 #include "runtime/timer.hpp"
31 class Compile;
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 Remove_Useless_And_Renumber_Live, // First, remove useless nodes from the graph. Then, renumber live nodes.
47 Optimistic, // Optimistic analysis phase
48 GVN, // Pessimistic global value numbering phase
49 Ins_Select, // Instruction selection phase
50 CFG, // Build a CFG
51 BlockLayout, // Linear ordering of blocks
52 Register_Allocation, // Register allocation, duh
53 LIVE, // Dragon-book LIVE range problem
54 StringOpts, // StringBuilder related optimizations
55 Interference_Graph, // Building the IFG
56 Coalesce, // Coalescing copies
57 Ideal_Loop, // Find idealized trip-counted loops
58 Macro_Expand, // Expand macro nodes
59 Peephole, // Apply peephole optimizations
60 last_phase
61 };
62 protected:
63 enum PhaseNumber _pnum; // Phase number (for stat gathering)
65 #ifndef PRODUCT
66 static int _total_bytes_compiled;
68 // accumulated timers
69 static elapsedTimer _t_totalCompilation;
70 static elapsedTimer _t_methodCompilation;
71 static elapsedTimer _t_stubCompilation;
72 #endif
74 // The next timers used for LogCompilation
75 static elapsedTimer _t_parser;
76 static elapsedTimer _t_optimizer;
77 public:
78 // ConnectionGraph can't be Phase since it is used after EA done.
79 static elapsedTimer _t_escapeAnalysis;
80 static elapsedTimer _t_connectionGraph;
81 protected:
82 static elapsedTimer _t_idealLoop;
83 static elapsedTimer _t_ccp;
84 static elapsedTimer _t_matcher;
85 static elapsedTimer _t_registerAllocation;
86 static elapsedTimer _t_output;
88 #ifndef PRODUCT
89 static elapsedTimer _t_graphReshaping;
90 static elapsedTimer _t_scheduler;
91 static elapsedTimer _t_blockOrdering;
92 static elapsedTimer _t_macroEliminate;
93 static elapsedTimer _t_macroExpand;
94 static elapsedTimer _t_peephole;
95 static elapsedTimer _t_postalloc_expand;
96 static elapsedTimer _t_codeGeneration;
97 static elapsedTimer _t_registerMethod;
98 static elapsedTimer _t_temporaryTimer1;
99 static elapsedTimer _t_temporaryTimer2;
100 static elapsedTimer _t_idealLoopVerify;
102 // Subtimers for _t_optimizer
103 static elapsedTimer _t_iterGVN;
104 static elapsedTimer _t_iterGVN2;
105 static elapsedTimer _t_incrInline;
106 static elapsedTimer _t_renumberLive;
108 // Subtimers for _t_registerAllocation
109 static elapsedTimer _t_ctorChaitin;
110 static elapsedTimer _t_buildIFGphysical;
111 static elapsedTimer _t_computeLive;
112 static elapsedTimer _t_regAllocSplit;
113 static elapsedTimer _t_postAllocCopyRemoval;
114 static elapsedTimer _t_mergeMultidefs;
115 static elapsedTimer _t_fixupSpills;
117 // Subtimers for _t_output
118 static elapsedTimer _t_instrSched;
119 static elapsedTimer _t_buildOopMaps;
120 #endif
121 public:
122 Compile * C;
123 Phase( PhaseNumber pnum );
124 #ifndef PRODUCT
125 static void print_timers();
126 #endif
127 };
129 #endif // SHARE_VM_OPTO_PHASE_HPP