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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_HYDROGEN_BCE_H_ | 28 #ifndef V8_A64_INSTRUMENT_A64_H_ |
29 #define V8_HYDROGEN_BCE_H_ | 29 #define V8_A64_INSTRUMENT_A64_H_ |
30 | 30 |
31 #include "hydrogen.h" | 31 #include "globals.h" |
| 32 #include "utils.h" |
| 33 #include "a64/decoder-a64.h" |
| 34 #include "a64/constants-a64.h" |
| 35 #include "a64/instrument-a64.h" |
32 | 36 |
33 namespace v8 { | 37 namespace v8 { |
34 namespace internal { | 38 namespace internal { |
35 | 39 |
| 40 const int kCounterNameMaxLength = 256; |
| 41 const uint64_t kDefaultInstrumentationSamplingPeriod = 1 << 22; |
36 | 42 |
37 class BoundsCheckBbData; | |
38 class BoundsCheckKey; | |
39 class BoundsCheckTable : private ZoneHashMap { | |
40 public: | |
41 explicit BoundsCheckTable(Zone* zone); | |
42 | 43 |
43 INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone)); | 44 enum InstrumentState { |
44 INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone)); | 45 InstrumentStateDisable = 0, |
45 INLINE(void Delete(BoundsCheckKey* key)); | 46 InstrumentStateEnable = 1 |
46 | |
47 private: | |
48 DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable); | |
49 }; | 47 }; |
50 | 48 |
51 | 49 |
52 class HBoundsCheckEliminationPhase : public HPhase { | 50 enum CounterType { |
53 public: | 51 Gauge = 0, // Gauge counters reset themselves after reading. |
54 explicit HBoundsCheckEliminationPhase(HGraph* graph) | 52 Cumulative = 1 // Cumulative counters keep their value after reading. |
55 : HPhase("H_Bounds checks elimination", graph), table_(zone()) { } | |
56 | |
57 void Run() { | |
58 EliminateRedundantBoundsChecks(graph()->entry_block()); | |
59 } | |
60 | |
61 private: | |
62 void EliminateRedundantBoundsChecks(HBasicBlock* bb); | |
63 BoundsCheckBbData* PreProcessBlock(HBasicBlock* bb); | |
64 void PostProcessBlock(HBasicBlock* bb, BoundsCheckBbData* data); | |
65 | |
66 BoundsCheckTable table_; | |
67 | |
68 DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase); | |
69 }; | 53 }; |
70 | 54 |
71 | 55 |
| 56 class Counter { |
| 57 public: |
| 58 Counter(const char* name, CounterType type = Gauge); |
| 59 |
| 60 void Increment(); |
| 61 void Enable(); |
| 62 void Disable(); |
| 63 bool IsEnabled(); |
| 64 uint64_t count(); |
| 65 const char* name(); |
| 66 CounterType type(); |
| 67 |
| 68 private: |
| 69 char name_[kCounterNameMaxLength]; |
| 70 uint64_t count_; |
| 71 bool enabled_; |
| 72 CounterType type_; |
| 73 }; |
| 74 |
| 75 |
| 76 class Instrument: public DecoderVisitor { |
| 77 public: |
| 78 explicit Instrument(const char* datafile = NULL, |
| 79 uint64_t sample_period = kDefaultInstrumentationSamplingPeriod); |
| 80 ~Instrument(); |
| 81 |
| 82 // Declare all Visitor functions. |
| 83 #define DECLARE(A) void Visit##A(Instruction* instr); |
| 84 VISITOR_LIST(DECLARE) |
| 85 #undef DECLARE |
| 86 |
| 87 private: |
| 88 void Update(); |
| 89 void Enable(); |
| 90 void Disable(); |
| 91 void DumpCounters(); |
| 92 void DumpCounterNames(); |
| 93 void DumpEventMarker(unsigned marker); |
| 94 void HandleInstrumentationEvent(unsigned event); |
| 95 Counter* GetCounter(const char* name); |
| 96 |
| 97 void InstrumentLoadStore(Instruction* instr); |
| 98 void InstrumentLoadStorePair(Instruction* instr); |
| 99 |
| 100 std::list<Counter*> counters_; |
| 101 |
| 102 FILE *output_stream_; |
| 103 uint64_t sample_period_; |
| 104 }; |
| 105 |
72 } } // namespace v8::internal | 106 } } // namespace v8::internal |
73 | 107 |
74 #endif // V8_HYDROGEN_BCE_H_ | 108 #endif // V8_A64_INSTRUMENT_A64_H_ |
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