Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ART_COMPILER_OPTIMIZING_REFERENCE_TYPE_PROPAGATION_H_ |
| 18 | #define ART_COMPILER_OPTIMIZING_REFERENCE_TYPE_PROPAGATION_H_ |
| 19 | |
Vladimir Marko | 2aaa4b5 | 2015-09-17 17:03:26 +0100 | [diff] [blame] | 20 | #include "base/arena_containers.h" |
Calin Juravle | acf735c | 2015-02-12 15:25:22 +0000 | [diff] [blame] | 21 | #include "driver/dex_compilation_unit.h" |
| 22 | #include "handle_scope-inl.h" |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 23 | #include "nodes.h" |
Mathieu Chartier | 3398c78 | 2016-09-30 10:27:43 -0700 | [diff] [blame] | 24 | #include "obj_ptr.h" |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 25 | #include "optimization.h" |
Calin Juravle | b1498f6 | 2015-02-16 13:13:29 +0000 | [diff] [blame] | 26 | #include "optimizing_compiler_stats.h" |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 27 | |
| 28 | namespace art { |
| 29 | |
| 30 | /** |
| 31 | * Propagates reference types to instructions. |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 32 | */ |
Calin Juravle | 6c0c4f2 | 2015-06-12 15:40:42 +0000 | [diff] [blame] | 33 | class ReferenceTypePropagation : public HOptimization { |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 34 | public: |
Calin Juravle | a5ae3c3 | 2015-07-28 14:40:50 +0000 | [diff] [blame] | 35 | ReferenceTypePropagation(HGraph* graph, |
Vladimir Marko | 456307a | 2016-04-19 14:12:13 +0000 | [diff] [blame] | 36 | Handle<mirror::DexCache> hint_dex_cache, |
Mathieu Chartier | e8a3c57 | 2016-10-11 16:52:17 -0700 | [diff] [blame] | 37 | VariableSizedHandleScope* handles, |
Nicolas Geoffray | d9994f0 | 2016-02-11 17:35:55 +0000 | [diff] [blame] | 38 | bool is_first_run, |
Calin Juravle | 2e76830 | 2015-07-28 14:41:11 +0000 | [diff] [blame] | 39 | const char* name = kReferenceTypePropagationPassName); |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 40 | |
Vladimir Marko | be10e8e | 2016-01-22 12:09:44 +0000 | [diff] [blame] | 41 | // Visit a single instruction. |
| 42 | void Visit(HInstruction* instruction); |
| 43 | |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 44 | void Run() OVERRIDE; |
| 45 | |
David Brazdil | 94ab38f | 2016-06-21 17:48:19 +0100 | [diff] [blame] | 46 | // Returns true if klass is admissible to the propagation: non-null and resolved. |
| 47 | // For an array type, we also check if the component type is admissible. |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 48 | static bool IsAdmissible(mirror::Class* klass) REQUIRES_SHARED(Locks::mutator_lock_) { |
David Brazdil | 94ab38f | 2016-06-21 17:48:19 +0100 | [diff] [blame] | 49 | return klass != nullptr && |
| 50 | klass->IsResolved() && |
| 51 | (!klass->IsArrayClass() || IsAdmissible(klass->GetComponentType())); |
| 52 | } |
| 53 | |
Andreas Gampe | 7c3952f | 2015-02-19 18:21:24 -0800 | [diff] [blame] | 54 | static constexpr const char* kReferenceTypePropagationPassName = "reference_type_propagation"; |
| 55 | |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 56 | private: |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 57 | class HandleCache { |
| 58 | public: |
Mathieu Chartier | e8a3c57 | 2016-10-11 16:52:17 -0700 | [diff] [blame] | 59 | explicit HandleCache(VariableSizedHandleScope* handles) : handles_(handles) { } |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 60 | |
| 61 | template <typename T> |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 62 | MutableHandle<T> NewHandle(T* object) REQUIRES_SHARED(Locks::mutator_lock_) { |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 63 | return handles_->NewHandle(object); |
| 64 | } |
| 65 | |
Mathieu Chartier | 3398c78 | 2016-09-30 10:27:43 -0700 | [diff] [blame] | 66 | template <typename T> |
| 67 | MutableHandle<T> NewHandle(ObjPtr<T> object) REQUIRES_SHARED(Locks::mutator_lock_) { |
| 68 | return handles_->NewHandle(object); |
| 69 | } |
| 70 | |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 71 | ReferenceTypeInfo::TypeHandle GetObjectClassHandle(); |
| 72 | ReferenceTypeInfo::TypeHandle GetClassClassHandle(); |
| 73 | ReferenceTypeInfo::TypeHandle GetStringClassHandle(); |
| 74 | ReferenceTypeInfo::TypeHandle GetThrowableClassHandle(); |
| 75 | |
| 76 | private: |
Mathieu Chartier | e8a3c57 | 2016-10-11 16:52:17 -0700 | [diff] [blame] | 77 | VariableSizedHandleScope* handles_; |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 78 | |
| 79 | ReferenceTypeInfo::TypeHandle object_class_handle_; |
| 80 | ReferenceTypeInfo::TypeHandle class_class_handle_; |
| 81 | ReferenceTypeInfo::TypeHandle string_class_handle_; |
| 82 | ReferenceTypeInfo::TypeHandle throwable_class_handle_; |
| 83 | }; |
| 84 | |
| 85 | class RTPVisitor; |
| 86 | |
Calin Juravle | b1498f6 | 2015-02-16 13:13:29 +0000 | [diff] [blame] | 87 | void VisitPhi(HPhi* phi); |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 88 | void VisitBasicBlock(HBasicBlock* block); |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 89 | void UpdateBoundType(HBoundType* bound_type) REQUIRES_SHARED(Locks::mutator_lock_); |
| 90 | void UpdatePhi(HPhi* phi) REQUIRES_SHARED(Locks::mutator_lock_); |
Calin Juravle | 61d544b | 2015-02-23 16:46:57 +0000 | [diff] [blame] | 91 | void BoundTypeForIfNotNull(HBasicBlock* block); |
Calin Juravle | b1498f6 | 2015-02-16 13:13:29 +0000 | [diff] [blame] | 92 | void BoundTypeForIfInstanceOf(HBasicBlock* block); |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 93 | void ProcessWorklist(); |
Calin Juravle | b1498f6 | 2015-02-16 13:13:29 +0000 | [diff] [blame] | 94 | void AddToWorklist(HInstruction* instr); |
| 95 | void AddDependentInstructionsToWorklist(HInstruction* instr); |
| 96 | |
| 97 | bool UpdateNullability(HInstruction* instr); |
| 98 | bool UpdateReferenceTypeInfo(HInstruction* instr); |
| 99 | |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 100 | static void UpdateArrayGet(HArrayGet* instr, HandleCache* handle_cache) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 101 | REQUIRES_SHARED(Locks::mutator_lock_); |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 102 | |
Calin Juravle | b1498f6 | 2015-02-16 13:13:29 +0000 | [diff] [blame] | 103 | ReferenceTypeInfo MergeTypes(const ReferenceTypeInfo& a, const ReferenceTypeInfo& b) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 104 | REQUIRES_SHARED(Locks::mutator_lock_); |
Calin Juravle | acf735c | 2015-02-12 15:25:22 +0000 | [diff] [blame] | 105 | |
Calin Juravle | cdfed3d | 2015-10-26 14:05:01 +0000 | [diff] [blame] | 106 | void ValidateTypes(); |
| 107 | |
Vladimir Marko | 456307a | 2016-04-19 14:12:13 +0000 | [diff] [blame] | 108 | // Note: hint_dex_cache_ is usually, but not necessarily, the dex cache associated with |
| 109 | // graph_->GetDexFile(). Since we may look up also in other dex files, it's used only |
| 110 | // as a hint, to reduce the number of calls to the costly ClassLinker::FindDexCache(). |
| 111 | Handle<mirror::DexCache> hint_dex_cache_; |
Vladimir Marko | 7d1fbf3 | 2016-01-26 15:01:12 +0000 | [diff] [blame] | 112 | HandleCache handle_cache_; |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 113 | |
Vladimir Marko | 2aaa4b5 | 2015-09-17 17:03:26 +0100 | [diff] [blame] | 114 | ArenaVector<HInstruction*> worklist_; |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 115 | |
Nicolas Geoffray | d9994f0 | 2016-02-11 17:35:55 +0000 | [diff] [blame] | 116 | // Whether this reference type propagation is the first run we are doing. |
| 117 | const bool is_first_run_; |
Calin Juravle | 2e76830 | 2015-07-28 14:41:11 +0000 | [diff] [blame] | 118 | |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 119 | static constexpr size_t kDefaultWorklistSize = 8; |
| 120 | |
Aart Bik | 8b3f9b2 | 2016-04-06 11:22:12 -0700 | [diff] [blame] | 121 | friend class ReferenceTypePropagationTest; |
| 122 | |
Calin Juravle | 10e244f | 2015-01-26 18:54:32 +0000 | [diff] [blame] | 123 | DISALLOW_COPY_AND_ASSIGN(ReferenceTypePropagation); |
| 124 | }; |
| 125 | |
| 126 | } // namespace art |
| 127 | |
| 128 | #endif // ART_COMPILER_OPTIMIZING_REFERENCE_TYPE_PROPAGATION_H_ |