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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_HYDROGEN_CHECK_ELIMINATION_H_ | 5 #ifndef V8_HYDROGEN_CHECK_ELIMINATION_H_ |
6 #define V8_HYDROGEN_CHECK_ELIMINATION_H_ | 6 #define V8_HYDROGEN_CHECK_ELIMINATION_H_ |
7 | 7 |
8 #include "hydrogen.h" | 8 #include "hydrogen.h" |
9 #include "hydrogen-alias-analysis.h" | 9 #include "hydrogen-alias-analysis.h" |
10 | 10 |
11 namespace v8 { | 11 namespace v8 { |
12 namespace internal { | 12 namespace internal { |
13 | 13 |
14 | 14 |
15 // Remove CheckMaps instructions through flow- and branch-sensitive analysis. | 15 // Remove CheckMaps instructions through flow- and branch-sensitive analysis. |
16 class HCheckEliminationPhase : public HPhase { | 16 class HCheckEliminationPhase : public HPhase { |
17 public: | 17 public: |
18 explicit HCheckEliminationPhase(HGraph* graph) | 18 explicit HCheckEliminationPhase(HGraph* graph) |
19 : HPhase("H_Check Elimination", graph), aliasing_() { | 19 : HPhase("H_Check Elimination", graph), aliasing_(), |
| 20 string_maps_(kStringMapsSize, zone()) { |
| 21 // Compute the set of string maps. |
| 22 #define ADD_STRING_MAP(type, size, name, Name) \ |
| 23 string_maps_.Add(Unique<Map>::CreateImmovable( \ |
| 24 graph->isolate()->factory()->name##_map()), zone()); |
| 25 STRING_TYPE_LIST(ADD_STRING_MAP) |
| 26 #undef ADD_STRING_MAP |
| 27 ASSERT_EQ(kStringMapsSize, string_maps_.size()); |
20 #ifdef DEBUG | 28 #ifdef DEBUG |
21 redundant_ = 0; | 29 redundant_ = 0; |
22 removed_ = 0; | 30 removed_ = 0; |
23 removed_cho_ = 0; | 31 removed_cho_ = 0; |
| 32 removed_cit_ = 0; |
24 narrowed_ = 0; | 33 narrowed_ = 0; |
25 loads_ = 0; | 34 loads_ = 0; |
26 empty_ = 0; | 35 empty_ = 0; |
27 compares_true_ = 0; | 36 compares_true_ = 0; |
28 compares_false_ = 0; | 37 compares_false_ = 0; |
29 transitions_ = 0; | 38 transitions_ = 0; |
30 #endif | 39 #endif |
31 } | 40 } |
32 | 41 |
33 void Run(); | 42 void Run(); |
34 | 43 |
35 friend class HCheckTable; | 44 friend class HCheckTable; |
36 | 45 |
37 private: | 46 private: |
| 47 const UniqueSet<Map>* string_maps() const { return &string_maps_; } |
| 48 |
38 void PrintStats(); | 49 void PrintStats(); |
39 | 50 |
40 HAliasAnalyzer* aliasing_; | 51 HAliasAnalyzer* aliasing_; |
| 52 #define COUNT(type, size, name, Name) + 1 |
| 53 static const int kStringMapsSize = 0 STRING_TYPE_LIST(COUNT); |
| 54 #undef COUNT |
| 55 UniqueSet<Map> string_maps_; |
41 #ifdef DEBUG | 56 #ifdef DEBUG |
42 int redundant_; | 57 int redundant_; |
43 int removed_; | 58 int removed_; |
44 int removed_cho_; | 59 int removed_cho_; |
| 60 int removed_cit_; |
45 int narrowed_; | 61 int narrowed_; |
46 int loads_; | 62 int loads_; |
47 int empty_; | 63 int empty_; |
48 int compares_true_; | 64 int compares_true_; |
49 int compares_false_; | 65 int compares_false_; |
50 int transitions_; | 66 int transitions_; |
51 #endif | 67 #endif |
52 }; | 68 }; |
53 | 69 |
54 | 70 |
55 } } // namespace v8::internal | 71 } } // namespace v8::internal |
56 | 72 |
57 #endif // V8_HYDROGEN_CHECK_ELIMINATION_H_ | 73 #endif // V8_HYDROGEN_CHECK_ELIMINATION_H_ |
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