Mercurial > hg > truffle
annotate src/share/vm/opto/phase.hpp @ 9126:bc26f978b0ce
HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly
don't use the (wrong) cached value, but ask the runtime on each request.
Fixes regression on xml.* benchmarks @ specjvm2008. The problem was:
After the constructor of Object was deoptimized due to an assumption violation,
it was recompiled again after some time. However, on recompilation, the value
of hasFinalizeSubclass for the class was not updated and it was compiled again
with a, now wrong, assumption, which then triggers deoptimization again.
This was repeated until it hit the recompilation limit (defined by
PerMethodRecompilationCutoff), and therefore only executed by the interpreter
from now on, causing the performance regression.
| author | Bernhard Urban <bernhard.urban@jku.at> |
|---|---|
| date | Mon, 15 Apr 2013 19:54:58 +0200 |
| parents | ee138854b3a6 |
| children | 6f3fd5150b67 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 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 | |
| 0 | 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 | |
| 418 | 50 BlockLayout, // Linear ordering of blocks |
| 0 | 51 Register_Allocation, // Register allocation, duh |
| 52 LIVE, // Dragon-book LIVE range problem | |
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53 StringOpts, // StringBuilder related optimizations |
| 0 | 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_optimizer; | |
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76 public: |
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77 // ConnectionGraph can't be Phase since it is used after EA done. |
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78 static elapsedTimer _t_escapeAnalysis; |
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79 static elapsedTimer _t_connectionGraph; |
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80 protected: |
| 0 | 81 static elapsedTimer _t_idealLoop; |
| 82 static elapsedTimer _t_ccp; | |
| 83 static elapsedTimer _t_matcher; | |
| 84 static elapsedTimer _t_registerAllocation; | |
| 85 static elapsedTimer _t_output; | |
| 86 | |
| 87 #ifndef PRODUCT | |
| 88 static elapsedTimer _t_graphReshaping; | |
| 89 static elapsedTimer _t_scheduler; | |
| 418 | 90 static elapsedTimer _t_blockOrdering; |
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91 static elapsedTimer _t_macroEliminate; |
| 0 | 92 static elapsedTimer _t_macroExpand; |
| 93 static elapsedTimer _t_peephole; | |
| 94 static elapsedTimer _t_codeGeneration; | |
| 95 static elapsedTimer _t_registerMethod; | |
| 96 static elapsedTimer _t_temporaryTimer1; | |
| 97 static elapsedTimer _t_temporaryTimer2; | |
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98 static elapsedTimer _t_idealLoopVerify; |
| 0 | 99 |
| 100 // Subtimers for _t_optimizer | |
| 101 static elapsedTimer _t_iterGVN; | |
| 102 static elapsedTimer _t_iterGVN2; | |
| 103 | |
| 104 // Subtimers for _t_registerAllocation | |
| 105 static elapsedTimer _t_ctorChaitin; | |
| 106 static elapsedTimer _t_buildIFGphysical; | |
| 107 static elapsedTimer _t_computeLive; | |
| 108 static elapsedTimer _t_regAllocSplit; | |
| 109 static elapsedTimer _t_postAllocCopyRemoval; | |
| 110 static elapsedTimer _t_fixupSpills; | |
| 111 | |
| 112 // Subtimers for _t_output | |
| 113 static elapsedTimer _t_instrSched; | |
| 114 static elapsedTimer _t_buildOopMaps; | |
| 115 #endif | |
| 116 public: | |
| 117 Compile * C; | |
| 118 Phase( PhaseNumber pnum ); | |
| 119 #ifndef PRODUCT | |
| 120 static void print_timers(); | |
| 121 #endif | |
| 122 }; | |
| 1972 | 123 |
| 124 #endif // SHARE_VM_OPTO_PHASE_HPP |