Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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_NODES_H_ |
| 18 | #define ART_COMPILER_OPTIMIZING_NODES_H_ |
| 19 | |
| 20 | #include "utils/allocation.h" |
Nicolas Geoffray | 0e33643 | 2014-02-26 18:24:38 +0000 | [diff] [blame] | 21 | #include "utils/arena_bit_vector.h" |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 22 | #include "utils/growable_array.h" |
| 23 | |
| 24 | namespace art { |
| 25 | |
| 26 | class HBasicBlock; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 27 | class HEnvironment; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 28 | class HInstruction; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 29 | class HIntConstant; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 30 | class HGraphVisitor; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 31 | class HPhi; |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 32 | class LocationSummary; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 33 | |
| 34 | static const int kDefaultNumberOfBlocks = 8; |
| 35 | static const int kDefaultNumberOfSuccessors = 2; |
| 36 | static const int kDefaultNumberOfPredecessors = 2; |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 37 | static const int kDefaultNumberOfBackEdges = 1; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 38 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 39 | class HInstructionList { |
| 40 | public: |
| 41 | HInstructionList() : first_instruction_(nullptr), last_instruction_(nullptr) {} |
| 42 | |
| 43 | void AddInstruction(HInstruction* instruction); |
| 44 | void RemoveInstruction(HInstruction* instruction); |
| 45 | |
| 46 | private: |
| 47 | HInstruction* first_instruction_; |
| 48 | HInstruction* last_instruction_; |
| 49 | |
| 50 | friend class HBasicBlock; |
| 51 | friend class HInstructionIterator; |
| 52 | |
| 53 | DISALLOW_COPY_AND_ASSIGN(HInstructionList); |
| 54 | }; |
| 55 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 56 | // Control-flow graph of a method. Contains a list of basic blocks. |
| 57 | class HGraph : public ArenaObject { |
| 58 | public: |
| 59 | explicit HGraph(ArenaAllocator* arena) |
| 60 | : arena_(arena), |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 61 | blocks_(arena, kDefaultNumberOfBlocks), |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 62 | dominator_order_(arena, kDefaultNumberOfBlocks), |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 63 | maximum_number_of_out_vregs_(0), |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 64 | number_of_vregs_(0), |
| 65 | number_of_in_vregs_(0), |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 66 | current_instruction_id_(0) { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 67 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 68 | ArenaAllocator* GetArena() const { return arena_; } |
| 69 | const GrowableArray<HBasicBlock*>* GetBlocks() const { return &blocks_; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 70 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 71 | HBasicBlock* GetEntryBlock() const { return entry_block_; } |
| 72 | HBasicBlock* GetExitBlock() const { return exit_block_; } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 73 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 74 | void SetEntryBlock(HBasicBlock* block) { entry_block_ = block; } |
| 75 | void SetExitBlock(HBasicBlock* block) { exit_block_ = block; } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 76 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 77 | void AddBlock(HBasicBlock* block); |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 78 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 79 | void BuildDominatorTree(); |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 80 | void TransformToSSA(); |
| 81 | void SimplifyCFG(); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 82 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 83 | int GetNextInstructionId() { |
| 84 | return current_instruction_id_++; |
| 85 | } |
| 86 | |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 87 | uint16_t GetMaximumNumberOfOutVRegs() const { |
| 88 | return maximum_number_of_out_vregs_; |
| 89 | } |
| 90 | |
| 91 | void UpdateMaximumNumberOfOutVRegs(uint16_t new_value) { |
| 92 | maximum_number_of_out_vregs_ = std::max(new_value, maximum_number_of_out_vregs_); |
| 93 | } |
| 94 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 95 | void SetNumberOfVRegs(uint16_t number_of_vregs) { |
| 96 | number_of_vregs_ = number_of_vregs; |
| 97 | } |
| 98 | |
| 99 | uint16_t GetNumberOfVRegs() const { |
| 100 | return number_of_vregs_; |
| 101 | } |
| 102 | |
| 103 | void SetNumberOfInVRegs(uint16_t value) { |
| 104 | number_of_in_vregs_ = value; |
| 105 | } |
| 106 | |
| 107 | uint16_t GetNumberOfInVRegs() const { |
| 108 | return number_of_in_vregs_; |
| 109 | } |
| 110 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 111 | GrowableArray<HBasicBlock*>* GetDominatorOrder() { |
| 112 | return &dominator_order_; |
| 113 | } |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 114 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 115 | private: |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 116 | HBasicBlock* FindCommonDominator(HBasicBlock* first, HBasicBlock* second) const; |
| 117 | void VisitBlockForDominatorTree(HBasicBlock* block, |
| 118 | HBasicBlock* predecessor, |
| 119 | GrowableArray<size_t>* visits); |
| 120 | void FindBackEdges(ArenaBitVector* visited) const; |
| 121 | void VisitBlockForBackEdges(HBasicBlock* block, |
| 122 | ArenaBitVector* visited, |
| 123 | ArenaBitVector* visiting) const; |
| 124 | void RemoveDeadBlocks(const ArenaBitVector& visited) const; |
| 125 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 126 | ArenaAllocator* const arena_; |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 127 | |
| 128 | // List of blocks in insertion order. |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 129 | GrowableArray<HBasicBlock*> blocks_; |
| 130 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 131 | // List of blocks to perform a pre-order dominator tree traversal. |
| 132 | GrowableArray<HBasicBlock*> dominator_order_; |
| 133 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 134 | HBasicBlock* entry_block_; |
| 135 | HBasicBlock* exit_block_; |
| 136 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 137 | // The maximum number of virtual registers arguments passed to a HInvoke in this graph. |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 138 | uint16_t maximum_number_of_out_vregs_; |
| 139 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 140 | // The number of virtual registers in this method. Contains the parameters. |
| 141 | uint16_t number_of_vregs_; |
| 142 | |
| 143 | // The number of virtual registers used by parameters of this method. |
| 144 | uint16_t number_of_in_vregs_; |
| 145 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 146 | // The current id to assign to a newly added instruction. See HInstruction.id_. |
| 147 | int current_instruction_id_; |
| 148 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 149 | DISALLOW_COPY_AND_ASSIGN(HGraph); |
| 150 | }; |
| 151 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 152 | class HLoopInformation : public ArenaObject { |
| 153 | public: |
| 154 | HLoopInformation(HBasicBlock* header, HGraph* graph) |
| 155 | : header_(header), |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 156 | back_edges_(graph->GetArena(), kDefaultNumberOfBackEdges) { } |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 157 | |
| 158 | void AddBackEdge(HBasicBlock* back_edge) { |
| 159 | back_edges_.Add(back_edge); |
| 160 | } |
| 161 | |
| 162 | int NumberOfBackEdges() const { |
| 163 | return back_edges_.Size(); |
| 164 | } |
| 165 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 166 | void SetPreHeader(HBasicBlock* block); |
| 167 | |
| 168 | HBasicBlock* GetPreHeader() const { |
| 169 | return pre_header_; |
| 170 | } |
| 171 | |
| 172 | const GrowableArray<HBasicBlock*>* GetBackEdges() const { |
| 173 | return &back_edges_; |
| 174 | } |
| 175 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 176 | private: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 177 | HBasicBlock* pre_header_; |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 178 | HBasicBlock* header_; |
| 179 | GrowableArray<HBasicBlock*> back_edges_; |
| 180 | |
| 181 | DISALLOW_COPY_AND_ASSIGN(HLoopInformation); |
| 182 | }; |
| 183 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 184 | // A block in a method. Contains the list of instructions represented |
| 185 | // as a double linked list. Each block knows its predecessors and |
| 186 | // successors. |
| 187 | class HBasicBlock : public ArenaObject { |
| 188 | public: |
| 189 | explicit HBasicBlock(HGraph* graph) |
| 190 | : graph_(graph), |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 191 | predecessors_(graph->GetArena(), kDefaultNumberOfPredecessors), |
| 192 | successors_(graph->GetArena(), kDefaultNumberOfSuccessors), |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 193 | loop_information_(nullptr), |
| 194 | dominator_(nullptr), |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 195 | block_id_(-1) { } |
| 196 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 197 | const GrowableArray<HBasicBlock*>* GetPredecessors() const { |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 198 | return &predecessors_; |
| 199 | } |
| 200 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 201 | const GrowableArray<HBasicBlock*>* GetSuccessors() const { |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 202 | return &successors_; |
| 203 | } |
| 204 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 205 | void AddBackEdge(HBasicBlock* back_edge) { |
| 206 | if (loop_information_ == nullptr) { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 207 | loop_information_ = new (graph_->GetArena()) HLoopInformation(this, graph_); |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 208 | } |
| 209 | loop_information_->AddBackEdge(back_edge); |
| 210 | } |
| 211 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 212 | HGraph* GetGraph() const { return graph_; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 213 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 214 | int GetBlockId() const { return block_id_; } |
| 215 | void SetBlockId(int id) { block_id_ = id; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 216 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 217 | HBasicBlock* GetDominator() const { return dominator_; } |
| 218 | void SetDominator(HBasicBlock* dominator) { dominator_ = dominator; } |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 219 | |
| 220 | int NumberOfBackEdges() const { |
| 221 | return loop_information_ == nullptr |
| 222 | ? 0 |
| 223 | : loop_information_->NumberOfBackEdges(); |
| 224 | } |
| 225 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 226 | HInstruction* GetFirstInstruction() const { return instructions_.first_instruction_; } |
| 227 | HInstruction* GetLastInstruction() const { return instructions_.last_instruction_; } |
| 228 | HInstructionList const* GetInstructions() const { return &instructions_; } |
| 229 | HInstructionList const* GetPhis() const { return &phis_; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 230 | |
| 231 | void AddSuccessor(HBasicBlock* block) { |
| 232 | successors_.Add(block); |
| 233 | block->predecessors_.Add(this); |
| 234 | } |
| 235 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 236 | void RemovePredecessor(HBasicBlock* block, bool remove_in_successor = true) { |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 237 | predecessors_.Delete(block); |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 238 | if (remove_in_successor) { |
| 239 | block->successors_.Delete(this); |
| 240 | } |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 243 | void AddInstruction(HInstruction* instruction); |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 244 | void RemoveInstruction(HInstruction* instruction); |
| 245 | void AddPhi(HPhi* phi); |
| 246 | void RemovePhi(HPhi* phi); |
| 247 | |
| 248 | bool IsLoopHeader() const { |
| 249 | return loop_information_ != nullptr; |
| 250 | } |
| 251 | |
| 252 | HLoopInformation* GetLoopInformation() const { |
| 253 | return loop_information_; |
| 254 | } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 255 | |
| 256 | private: |
| 257 | HGraph* const graph_; |
| 258 | GrowableArray<HBasicBlock*> predecessors_; |
| 259 | GrowableArray<HBasicBlock*> successors_; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 260 | HInstructionList instructions_; |
| 261 | HInstructionList phis_; |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 262 | HLoopInformation* loop_information_; |
| 263 | HBasicBlock* dominator_; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 264 | int block_id_; |
| 265 | |
| 266 | DISALLOW_COPY_AND_ASSIGN(HBasicBlock); |
| 267 | }; |
| 268 | |
| 269 | #define FOR_EACH_INSTRUCTION(M) \ |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 270 | M(Add) \ |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 271 | M(Equal) \ |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 272 | M(Exit) \ |
| 273 | M(Goto) \ |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 274 | M(If) \ |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 275 | M(IntConstant) \ |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 276 | M(InvokeStatic) \ |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 277 | M(LoadLocal) \ |
| 278 | M(Local) \ |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 279 | M(LongConstant) \ |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 280 | M(NewInstance) \ |
Nicolas Geoffray | b55f835 | 2014-04-07 15:26:35 +0100 | [diff] [blame] | 281 | M(Not) \ |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 282 | M(ParameterValue) \ |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 283 | M(Phi) \ |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 284 | M(Return) \ |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 285 | M(ReturnVoid) \ |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 286 | M(StoreLocal) \ |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 287 | M(Sub) \ |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 288 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 289 | #define FORWARD_DECLARATION(type) class H##type; |
| 290 | FOR_EACH_INSTRUCTION(FORWARD_DECLARATION) |
| 291 | #undef FORWARD_DECLARATION |
| 292 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 293 | #define DECLARE_INSTRUCTION(type) \ |
| 294 | virtual void Accept(HGraphVisitor* visitor); \ |
| 295 | virtual const char* DebugName() const { return #type; } \ |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 296 | virtual H##type* As##type() { return this; } \ |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 297 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 298 | template <typename T> |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 299 | class HUseListNode : public ArenaObject { |
| 300 | public: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 301 | HUseListNode(T* user, size_t index, HUseListNode* tail) |
| 302 | : user_(user), index_(index), tail_(tail) { } |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 303 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 304 | HUseListNode* GetTail() const { return tail_; } |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 305 | T* GetUser() const { return user_; } |
| 306 | size_t GetIndex() const { return index_; } |
| 307 | |
| 308 | void SetTail(HUseListNode<T>* node) { tail_ = node; } |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 309 | |
| 310 | private: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 311 | T* const user_; |
| 312 | const size_t index_; |
| 313 | HUseListNode<T>* tail_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 314 | |
| 315 | DISALLOW_COPY_AND_ASSIGN(HUseListNode); |
| 316 | }; |
| 317 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 318 | class HInstruction : public ArenaObject { |
| 319 | public: |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 320 | HInstruction() |
| 321 | : previous_(nullptr), |
| 322 | next_(nullptr), |
| 323 | block_(nullptr), |
| 324 | id_(-1), |
| 325 | uses_(nullptr), |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 326 | env_uses_(nullptr), |
| 327 | environment_(nullptr), |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 328 | locations_(nullptr) { } |
| 329 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 330 | virtual ~HInstruction() { } |
| 331 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 332 | HInstruction* GetNext() const { return next_; } |
| 333 | HInstruction* GetPrevious() const { return previous_; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 334 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 335 | HBasicBlock* GetBlock() const { return block_; } |
| 336 | void SetBlock(HBasicBlock* block) { block_ = block; } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 337 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 338 | virtual size_t InputCount() const = 0; |
| 339 | virtual HInstruction* InputAt(size_t i) const = 0; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 340 | |
| 341 | virtual void Accept(HGraphVisitor* visitor) = 0; |
| 342 | virtual const char* DebugName() const = 0; |
| 343 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 344 | virtual Primitive::Type GetType() const { return Primitive::kPrimVoid; } |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 345 | virtual void SetRawInputAt(size_t index, HInstruction* input) = 0; |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 346 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 347 | virtual bool NeedsEnvironment() const { return false; } |
| 348 | |
| 349 | void AddUseAt(HInstruction* user, size_t index) { |
| 350 | uses_ = new (block_->GetGraph()->GetArena()) HUseListNode<HInstruction>(user, index, uses_); |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 351 | } |
| 352 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 353 | void AddEnvUseAt(HEnvironment* user, size_t index) { |
| 354 | env_uses_ = new (block_->GetGraph()->GetArena()) HUseListNode<HEnvironment>( |
| 355 | user, index, env_uses_); |
| 356 | } |
| 357 | |
| 358 | void RemoveUser(HInstruction* user, size_t index); |
| 359 | |
| 360 | HUseListNode<HInstruction>* GetUses() const { return uses_; } |
| 361 | HUseListNode<HEnvironment>* GetEnvUses() const { return env_uses_; } |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 362 | |
| 363 | bool HasUses() const { return uses_ != nullptr; } |
| 364 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 365 | int GetId() const { return id_; } |
| 366 | void SetId(int id) { id_ = id; } |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 367 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 368 | void SetEnvironment(HEnvironment* environment) { environment_ = environment; } |
| 369 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 370 | LocationSummary* GetLocations() const { return locations_; } |
| 371 | void SetLocations(LocationSummary* locations) { locations_ = locations; } |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 372 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 373 | void ReplaceWith(HInstruction* instruction); |
| 374 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 375 | #define INSTRUCTION_TYPE_CHECK(type) \ |
| 376 | virtual H##type* As##type() { return nullptr; } |
| 377 | |
| 378 | FOR_EACH_INSTRUCTION(INSTRUCTION_TYPE_CHECK) |
| 379 | #undef INSTRUCTION_TYPE_CHECK |
| 380 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 381 | private: |
| 382 | HInstruction* previous_; |
| 383 | HInstruction* next_; |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 384 | HBasicBlock* block_; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 385 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 386 | // An instruction gets an id when it is added to the graph. |
| 387 | // It reflects creation order. A negative id means the instruction |
| 388 | // has not beed added to the graph. |
| 389 | int id_; |
| 390 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 391 | // List of instructions that have this instruction as input. |
| 392 | HUseListNode<HInstruction>* uses_; |
| 393 | |
| 394 | // List of environments that contain this instruction. |
| 395 | HUseListNode<HEnvironment>* env_uses_; |
| 396 | |
| 397 | HEnvironment* environment_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 398 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 399 | // Set by the code generator. |
| 400 | LocationSummary* locations_; |
| 401 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 402 | friend class HBasicBlock; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 403 | friend class HInstructionList; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 404 | |
| 405 | DISALLOW_COPY_AND_ASSIGN(HInstruction); |
| 406 | }; |
| 407 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 408 | template<typename T> |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 409 | class HUseIterator : public ValueObject { |
| 410 | public: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 411 | explicit HUseIterator(HUseListNode<T>* uses) : current_(uses) {} |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 412 | |
| 413 | bool Done() const { return current_ == nullptr; } |
| 414 | |
| 415 | void Advance() { |
| 416 | DCHECK(!Done()); |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 417 | current_ = current_->GetTail(); |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 418 | } |
| 419 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 420 | HUseListNode<T>* Current() const { |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 421 | DCHECK(!Done()); |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 422 | return current_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | private: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 426 | HUseListNode<T>* current_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 427 | |
| 428 | friend class HValue; |
| 429 | }; |
| 430 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 431 | // A HEnvironment object contains the values of virtual registers at a given location. |
| 432 | class HEnvironment : public ArenaObject { |
| 433 | public: |
| 434 | HEnvironment(ArenaAllocator* arena, size_t number_of_vregs) : vregs_(arena, number_of_vregs) { |
| 435 | vregs_.SetSize(number_of_vregs); |
| 436 | for (size_t i = 0; i < number_of_vregs; i++) { |
| 437 | vregs_.Put(i, nullptr); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | void Populate(const GrowableArray<HInstruction*>& env) { |
| 442 | for (size_t i = 0; i < env.Size(); i++) { |
| 443 | HInstruction* instruction = env.Get(i); |
| 444 | vregs_.Put(i, instruction); |
| 445 | if (instruction != nullptr) { |
| 446 | instruction->AddEnvUseAt(this, i); |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | void SetRawEnvAt(size_t index, HInstruction* instruction) { |
| 452 | vregs_.Put(index, instruction); |
| 453 | } |
| 454 | |
| 455 | GrowableArray<HInstruction*>* GetVRegs() { |
| 456 | return &vregs_; |
| 457 | } |
| 458 | |
| 459 | private: |
| 460 | GrowableArray<HInstruction*> vregs_; |
| 461 | |
| 462 | DISALLOW_COPY_AND_ASSIGN(HEnvironment); |
| 463 | }; |
| 464 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 465 | class HInputIterator : public ValueObject { |
| 466 | public: |
| 467 | explicit HInputIterator(HInstruction* instruction) : instruction_(instruction), index_(0) { } |
| 468 | |
| 469 | bool Done() const { return index_ == instruction_->InputCount(); } |
| 470 | HInstruction* Current() const { return instruction_->InputAt(index_); } |
| 471 | void Advance() { index_++; } |
| 472 | |
| 473 | private: |
| 474 | HInstruction* instruction_; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 475 | size_t index_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 476 | |
| 477 | DISALLOW_COPY_AND_ASSIGN(HInputIterator); |
| 478 | }; |
| 479 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 480 | class HInstructionIterator : public ValueObject { |
| 481 | public: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 482 | explicit HInstructionIterator(const HInstructionList& instructions) |
| 483 | : instruction_(instructions.first_instruction_) { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 484 | next_ = Done() ? nullptr : instruction_->GetNext(); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 485 | } |
| 486 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 487 | bool Done() const { return instruction_ == nullptr; } |
| 488 | HInstruction* Current() const { return instruction_; } |
| 489 | void Advance() { |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 490 | instruction_ = next_; |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 491 | next_ = Done() ? nullptr : instruction_->GetNext(); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 492 | } |
| 493 | |
| 494 | private: |
| 495 | HInstruction* instruction_; |
| 496 | HInstruction* next_; |
| 497 | }; |
| 498 | |
| 499 | // An embedded container with N elements of type T. Used (with partial |
| 500 | // specialization for N=0) because embedded arrays cannot have size 0. |
| 501 | template<typename T, intptr_t N> |
| 502 | class EmbeddedArray { |
| 503 | public: |
| 504 | EmbeddedArray() : elements_() { } |
| 505 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 506 | intptr_t GetLength() const { return N; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 507 | |
| 508 | const T& operator[](intptr_t i) const { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 509 | DCHECK_LT(i, GetLength()); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 510 | return elements_[i]; |
| 511 | } |
| 512 | |
| 513 | T& operator[](intptr_t i) { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 514 | DCHECK_LT(i, GetLength()); |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 515 | return elements_[i]; |
| 516 | } |
| 517 | |
| 518 | const T& At(intptr_t i) const { |
| 519 | return (*this)[i]; |
| 520 | } |
| 521 | |
| 522 | void SetAt(intptr_t i, const T& val) { |
| 523 | (*this)[i] = val; |
| 524 | } |
| 525 | |
| 526 | private: |
| 527 | T elements_[N]; |
| 528 | }; |
| 529 | |
| 530 | template<typename T> |
| 531 | class EmbeddedArray<T, 0> { |
| 532 | public: |
| 533 | intptr_t length() const { return 0; } |
| 534 | const T& operator[](intptr_t i) const { |
| 535 | LOG(FATAL) << "Unreachable"; |
| 536 | static T sentinel = 0; |
| 537 | return sentinel; |
| 538 | } |
| 539 | T& operator[](intptr_t i) { |
| 540 | LOG(FATAL) << "Unreachable"; |
| 541 | static T sentinel = 0; |
| 542 | return sentinel; |
| 543 | } |
| 544 | }; |
| 545 | |
| 546 | template<intptr_t N> |
| 547 | class HTemplateInstruction: public HInstruction { |
| 548 | public: |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 549 | HTemplateInstruction<N>() : inputs_() { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 550 | virtual ~HTemplateInstruction() { } |
| 551 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 552 | virtual size_t InputCount() const { return N; } |
| 553 | virtual HInstruction* InputAt(size_t i) const { return inputs_[i]; } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 554 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 555 | protected: |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 556 | virtual void SetRawInputAt(size_t i, HInstruction* instruction) { |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 557 | inputs_[i] = instruction; |
| 558 | } |
| 559 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 560 | private: |
| 561 | EmbeddedArray<HInstruction*, N> inputs_; |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 562 | |
| 563 | friend class SsaBuilder; |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 564 | }; |
| 565 | |
| 566 | // Represents dex's RETURN_VOID opcode. A HReturnVoid is a control flow |
| 567 | // instruction that branches to the exit block. |
| 568 | class HReturnVoid : public HTemplateInstruction<0> { |
| 569 | public: |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 570 | HReturnVoid() { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 571 | |
| 572 | DECLARE_INSTRUCTION(ReturnVoid) |
| 573 | |
| 574 | private: |
| 575 | DISALLOW_COPY_AND_ASSIGN(HReturnVoid); |
| 576 | }; |
| 577 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 578 | // Represents dex's RETURN opcodes. A HReturn is a control flow |
| 579 | // instruction that branches to the exit block. |
| 580 | class HReturn : public HTemplateInstruction<1> { |
| 581 | public: |
| 582 | explicit HReturn(HInstruction* value) { |
| 583 | SetRawInputAt(0, value); |
| 584 | } |
| 585 | |
| 586 | DECLARE_INSTRUCTION(Return) |
| 587 | |
| 588 | private: |
| 589 | DISALLOW_COPY_AND_ASSIGN(HReturn); |
| 590 | }; |
| 591 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 592 | // The exit instruction is the only instruction of the exit block. |
| 593 | // Instructions aborting the method (HTrow and HReturn) must branch to the |
| 594 | // exit block. |
| 595 | class HExit : public HTemplateInstruction<0> { |
| 596 | public: |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 597 | HExit() { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 598 | |
| 599 | DECLARE_INSTRUCTION(Exit) |
| 600 | |
| 601 | private: |
| 602 | DISALLOW_COPY_AND_ASSIGN(HExit); |
| 603 | }; |
| 604 | |
| 605 | // Jumps from one block to another. |
| 606 | class HGoto : public HTemplateInstruction<0> { |
| 607 | public: |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 608 | HGoto() { } |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 609 | |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 610 | HBasicBlock* GetSuccessor() const { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 611 | return GetBlock()->GetSuccessors()->Get(0); |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 614 | DECLARE_INSTRUCTION(Goto) |
| 615 | |
| 616 | private: |
| 617 | DISALLOW_COPY_AND_ASSIGN(HGoto); |
| 618 | }; |
| 619 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 620 | // Conditional branch. A block ending with an HIf instruction must have |
| 621 | // two successors. |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 622 | class HIf : public HTemplateInstruction<1> { |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 623 | public: |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 624 | explicit HIf(HInstruction* input) { |
| 625 | SetRawInputAt(0, input); |
| 626 | } |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 627 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 628 | HBasicBlock* IfTrueSuccessor() const { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 629 | return GetBlock()->GetSuccessors()->Get(0); |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | HBasicBlock* IfFalseSuccessor() const { |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 633 | return GetBlock()->GetSuccessors()->Get(1); |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 634 | } |
| 635 | |
Nicolas Geoffray | be9a92a | 2014-02-25 14:22:56 +0000 | [diff] [blame] | 636 | DECLARE_INSTRUCTION(If) |
| 637 | |
| 638 | private: |
| 639 | DISALLOW_COPY_AND_ASSIGN(HIf); |
| 640 | }; |
| 641 | |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 642 | class HBinaryOperation : public HTemplateInstruction<2> { |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 643 | public: |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 644 | HBinaryOperation(Primitive::Type result_type, |
| 645 | HInstruction* left, |
| 646 | HInstruction* right) : result_type_(result_type) { |
| 647 | SetRawInputAt(0, left); |
| 648 | SetRawInputAt(1, right); |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 649 | } |
| 650 | |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 651 | HInstruction* GetLeft() const { return InputAt(0); } |
| 652 | HInstruction* GetRight() const { return InputAt(1); } |
| 653 | Primitive::Type GetResultType() const { return result_type_; } |
| 654 | |
| 655 | virtual bool IsCommutative() { return false; } |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 656 | virtual Primitive::Type GetType() const { return GetResultType(); } |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 657 | |
| 658 | private: |
| 659 | const Primitive::Type result_type_; |
| 660 | |
| 661 | DISALLOW_COPY_AND_ASSIGN(HBinaryOperation); |
| 662 | }; |
| 663 | |
| 664 | |
| 665 | // Instruction to check if two inputs are equal to each other. |
| 666 | class HEqual : public HBinaryOperation { |
| 667 | public: |
| 668 | HEqual(HInstruction* first, HInstruction* second) |
| 669 | : HBinaryOperation(Primitive::kPrimBoolean, first, second) {} |
| 670 | |
| 671 | virtual bool IsCommutative() { return true; } |
| 672 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 673 | virtual Primitive::Type GetType() const { return Primitive::kPrimBoolean; } |
| 674 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 675 | DECLARE_INSTRUCTION(Equal) |
| 676 | |
| 677 | private: |
| 678 | DISALLOW_COPY_AND_ASSIGN(HEqual); |
| 679 | }; |
| 680 | |
| 681 | // A local in the graph. Corresponds to a Dex register. |
| 682 | class HLocal : public HTemplateInstruction<0> { |
| 683 | public: |
| 684 | explicit HLocal(uint16_t reg_number) : reg_number_(reg_number) { } |
| 685 | |
| 686 | DECLARE_INSTRUCTION(Local) |
| 687 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 688 | uint16_t GetRegNumber() const { return reg_number_; } |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 689 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 690 | private: |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 691 | // The Dex register number. |
| 692 | const uint16_t reg_number_; |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 693 | |
| 694 | DISALLOW_COPY_AND_ASSIGN(HLocal); |
| 695 | }; |
| 696 | |
| 697 | // Load a given local. The local is an input of this instruction. |
| 698 | class HLoadLocal : public HTemplateInstruction<1> { |
| 699 | public: |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 700 | explicit HLoadLocal(HLocal* local, Primitive::Type type) : type_(type) { |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 701 | SetRawInputAt(0, local); |
| 702 | } |
| 703 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 704 | virtual Primitive::Type GetType() const { return type_; } |
| 705 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 706 | HLocal* GetLocal() const { return reinterpret_cast<HLocal*>(InputAt(0)); } |
| 707 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 708 | DECLARE_INSTRUCTION(LoadLocal) |
| 709 | |
| 710 | private: |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 711 | const Primitive::Type type_; |
| 712 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 713 | DISALLOW_COPY_AND_ASSIGN(HLoadLocal); |
| 714 | }; |
| 715 | |
| 716 | // Store a value in a given local. This instruction has two inputs: the value |
| 717 | // and the local. |
| 718 | class HStoreLocal : public HTemplateInstruction<2> { |
| 719 | public: |
| 720 | HStoreLocal(HLocal* local, HInstruction* value) { |
| 721 | SetRawInputAt(0, local); |
| 722 | SetRawInputAt(1, value); |
| 723 | } |
| 724 | |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 725 | HLocal* GetLocal() const { return reinterpret_cast<HLocal*>(InputAt(0)); } |
| 726 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 727 | DECLARE_INSTRUCTION(StoreLocal) |
| 728 | |
| 729 | private: |
| 730 | DISALLOW_COPY_AND_ASSIGN(HStoreLocal); |
| 731 | }; |
| 732 | |
| 733 | // Constants of the type int. Those can be from Dex instructions, or |
| 734 | // synthesized (for example with the if-eqz instruction). |
| 735 | class HIntConstant : public HTemplateInstruction<0> { |
| 736 | public: |
| 737 | explicit HIntConstant(int32_t value) : value_(value) { } |
| 738 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 739 | int32_t GetValue() const { return value_; } |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 740 | virtual Primitive::Type GetType() const { return Primitive::kPrimInt; } |
Nicolas Geoffray | bab4ed7 | 2014-03-11 17:53:17 +0000 | [diff] [blame] | 741 | |
Nicolas Geoffray | 3ff386a | 2014-03-04 14:46:47 +0000 | [diff] [blame] | 742 | DECLARE_INSTRUCTION(IntConstant) |
| 743 | |
| 744 | private: |
| 745 | const int32_t value_; |
| 746 | |
| 747 | DISALLOW_COPY_AND_ASSIGN(HIntConstant); |
| 748 | }; |
| 749 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 750 | class HLongConstant : public HTemplateInstruction<0> { |
| 751 | public: |
| 752 | explicit HLongConstant(int64_t value) : value_(value) { } |
| 753 | |
| 754 | int64_t GetValue() const { return value_; } |
| 755 | |
| 756 | virtual Primitive::Type GetType() const { return Primitive::kPrimLong; } |
| 757 | |
| 758 | DECLARE_INSTRUCTION(LongConstant) |
| 759 | |
| 760 | private: |
| 761 | const int64_t value_; |
| 762 | |
| 763 | DISALLOW_COPY_AND_ASSIGN(HLongConstant); |
| 764 | }; |
| 765 | |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 766 | class HInvoke : public HInstruction { |
| 767 | public: |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 768 | HInvoke(ArenaAllocator* arena, |
| 769 | uint32_t number_of_arguments, |
| 770 | Primitive::Type return_type, |
| 771 | uint32_t dex_pc) |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 772 | : inputs_(arena, number_of_arguments), |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 773 | return_type_(return_type), |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 774 | dex_pc_(dex_pc) { |
| 775 | inputs_.SetSize(number_of_arguments); |
| 776 | } |
| 777 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 778 | virtual size_t InputCount() const { return inputs_.Size(); } |
| 779 | virtual HInstruction* InputAt(size_t i) const { return inputs_.Get(i); } |
| 780 | |
| 781 | // Runtime needs to walk the stack, so Dex -> Dex calls need to |
| 782 | // know their environment. |
| 783 | virtual bool NeedsEnvironment() const { return true; } |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 784 | |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 785 | void SetArgumentAt(size_t index, HInstruction* argument) { |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 786 | SetRawInputAt(index, argument); |
| 787 | } |
| 788 | |
| 789 | virtual void SetRawInputAt(size_t index, HInstruction* input) { |
| 790 | inputs_.Put(index, input); |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 791 | } |
| 792 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 793 | virtual Primitive::Type GetType() const { return return_type_; } |
| 794 | |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 795 | uint32_t GetDexPc() const { return dex_pc_; } |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 796 | |
| 797 | protected: |
| 798 | GrowableArray<HInstruction*> inputs_; |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 799 | const Primitive::Type return_type_; |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 800 | const uint32_t dex_pc_; |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 801 | |
| 802 | private: |
| 803 | DISALLOW_COPY_AND_ASSIGN(HInvoke); |
| 804 | }; |
| 805 | |
| 806 | class HInvokeStatic : public HInvoke { |
| 807 | public: |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 808 | HInvokeStatic(ArenaAllocator* arena, |
| 809 | uint32_t number_of_arguments, |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 810 | Primitive::Type return_type, |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 811 | uint32_t dex_pc, |
| 812 | uint32_t index_in_dex_cache) |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 813 | : HInvoke(arena, number_of_arguments, return_type, dex_pc), |
| 814 | index_in_dex_cache_(index_in_dex_cache) {} |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 815 | |
| 816 | uint32_t GetIndexInDexCache() const { return index_in_dex_cache_; } |
| 817 | |
| 818 | DECLARE_INSTRUCTION(InvokeStatic) |
| 819 | |
| 820 | private: |
Nicolas Geoffray | 4a34a42 | 2014-04-03 10:38:37 +0100 | [diff] [blame] | 821 | const uint32_t index_in_dex_cache_; |
Nicolas Geoffray | 8ccc3f5 | 2014-03-19 10:34:11 +0000 | [diff] [blame] | 822 | |
| 823 | DISALLOW_COPY_AND_ASSIGN(HInvokeStatic); |
| 824 | }; |
| 825 | |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 826 | class HNewInstance : public HTemplateInstruction<0> { |
| 827 | public: |
| 828 | HNewInstance(uint32_t dex_pc, uint16_t type_index) : dex_pc_(dex_pc), type_index_(type_index) {} |
| 829 | |
| 830 | uint32_t GetDexPc() const { return dex_pc_; } |
| 831 | uint16_t GetTypeIndex() const { return type_index_; } |
| 832 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 833 | virtual Primitive::Type GetType() const { return Primitive::kPrimNot; } |
| 834 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 835 | // Calls runtime so needs an environment. |
| 836 | virtual bool NeedsEnvironment() const { return true; } |
| 837 | |
Nicolas Geoffray | 2e7038a | 2014-04-03 18:49:58 +0100 | [diff] [blame] | 838 | DECLARE_INSTRUCTION(NewInstance) |
| 839 | |
| 840 | private: |
| 841 | const uint32_t dex_pc_; |
| 842 | const uint16_t type_index_; |
| 843 | |
| 844 | DISALLOW_COPY_AND_ASSIGN(HNewInstance); |
| 845 | }; |
| 846 | |
Nicolas Geoffray | d8ee737 | 2014-03-28 15:43:40 +0000 | [diff] [blame] | 847 | class HAdd : public HBinaryOperation { |
| 848 | public: |
| 849 | HAdd(Primitive::Type result_type, HInstruction* left, HInstruction* right) |
| 850 | : HBinaryOperation(result_type, left, right) {} |
| 851 | |
| 852 | virtual bool IsCommutative() { return true; } |
| 853 | |
| 854 | DECLARE_INSTRUCTION(Add); |
| 855 | |
| 856 | private: |
| 857 | DISALLOW_COPY_AND_ASSIGN(HAdd); |
| 858 | }; |
| 859 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 860 | class HSub : public HBinaryOperation { |
| 861 | public: |
| 862 | HSub(Primitive::Type result_type, HInstruction* left, HInstruction* right) |
| 863 | : HBinaryOperation(result_type, left, right) {} |
| 864 | |
| 865 | virtual bool IsCommutative() { return false; } |
| 866 | |
| 867 | DECLARE_INSTRUCTION(Sub); |
| 868 | |
| 869 | private: |
| 870 | DISALLOW_COPY_AND_ASSIGN(HSub); |
| 871 | }; |
| 872 | |
| 873 | // The value of a parameter in this method. Its location depends on |
| 874 | // the calling convention. |
| 875 | class HParameterValue : public HTemplateInstruction<0> { |
| 876 | public: |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 877 | HParameterValue(uint8_t index, Primitive::Type parameter_type) |
| 878 | : index_(index), parameter_type_(parameter_type) {} |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 879 | |
| 880 | uint8_t GetIndex() const { return index_; } |
| 881 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 882 | virtual Primitive::Type GetType() const { return parameter_type_; } |
| 883 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 884 | DECLARE_INSTRUCTION(ParameterValue); |
| 885 | |
| 886 | private: |
| 887 | // The index of this parameter in the parameters list. Must be less |
| 888 | // than HGraph::number_of_in_vregs_; |
| 889 | const uint8_t index_; |
| 890 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 891 | const Primitive::Type parameter_type_; |
| 892 | |
Nicolas Geoffray | f583e59 | 2014-04-07 13:20:42 +0100 | [diff] [blame] | 893 | DISALLOW_COPY_AND_ASSIGN(HParameterValue); |
| 894 | }; |
| 895 | |
Nicolas Geoffray | b55f835 | 2014-04-07 15:26:35 +0100 | [diff] [blame] | 896 | class HNot : public HTemplateInstruction<1> { |
| 897 | public: |
| 898 | explicit HNot(HInstruction* input) { |
| 899 | SetRawInputAt(0, input); |
| 900 | } |
| 901 | |
Nicolas Geoffray | 01bc96d | 2014-04-11 17:43:50 +0100 | [diff] [blame] | 902 | virtual Primitive::Type GetType() const { return Primitive::kPrimBoolean; } |
| 903 | |
Nicolas Geoffray | b55f835 | 2014-04-07 15:26:35 +0100 | [diff] [blame] | 904 | DECLARE_INSTRUCTION(Not); |
| 905 | |
| 906 | private: |
| 907 | DISALLOW_COPY_AND_ASSIGN(HNot); |
| 908 | }; |
| 909 | |
Nicolas Geoffray | c32e770 | 2014-04-24 12:43:16 +0100 | [diff] [blame^] | 910 | class HPhi : public HInstruction { |
| 911 | public: |
| 912 | HPhi(ArenaAllocator* arena, uint32_t reg_number, size_t number_of_inputs, Primitive::Type type) |
| 913 | : inputs_(arena, number_of_inputs), |
| 914 | reg_number_(reg_number), |
| 915 | type_(type) { |
| 916 | inputs_.SetSize(number_of_inputs); |
| 917 | } |
| 918 | |
| 919 | virtual size_t InputCount() const { return inputs_.Size(); } |
| 920 | virtual HInstruction* InputAt(size_t i) const { return inputs_.Get(i); } |
| 921 | |
| 922 | virtual void SetRawInputAt(size_t index, HInstruction* input) { |
| 923 | inputs_.Put(index, input); |
| 924 | } |
| 925 | |
| 926 | void AddInput(HInstruction* input); |
| 927 | |
| 928 | virtual Primitive::Type GetType() const { return type_; } |
| 929 | |
| 930 | uint32_t GetRegNumber() const { return reg_number_; } |
| 931 | |
| 932 | DECLARE_INSTRUCTION(Phi) |
| 933 | |
| 934 | protected: |
| 935 | GrowableArray<HInstruction*> inputs_; |
| 936 | const uint32_t reg_number_; |
| 937 | const Primitive::Type type_; |
| 938 | |
| 939 | private: |
| 940 | DISALLOW_COPY_AND_ASSIGN(HPhi); |
| 941 | }; |
| 942 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 943 | class HGraphVisitor : public ValueObject { |
| 944 | public: |
| 945 | explicit HGraphVisitor(HGraph* graph) : graph_(graph) { } |
| 946 | virtual ~HGraphVisitor() { } |
| 947 | |
| 948 | virtual void VisitInstruction(HInstruction* instruction) { } |
| 949 | virtual void VisitBasicBlock(HBasicBlock* block); |
| 950 | |
| 951 | void VisitInsertionOrder(); |
| 952 | |
Nicolas Geoffray | 787c307 | 2014-03-17 10:20:19 +0000 | [diff] [blame] | 953 | HGraph* GetGraph() const { return graph_; } |
Nicolas Geoffray | d4dd255 | 2014-02-28 10:23:58 +0000 | [diff] [blame] | 954 | |
Nicolas Geoffray | 818f210 | 2014-02-18 16:43:35 +0000 | [diff] [blame] | 955 | // Visit functions for instruction classes. |
| 956 | #define DECLARE_VISIT_INSTRUCTION(name) \ |
| 957 | virtual void Visit##name(H##name* instr) { VisitInstruction(instr); } |
| 958 | |
| 959 | FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION) |
| 960 | |
| 961 | #undef DECLARE_VISIT_INSTRUCTION |
| 962 | |
| 963 | private: |
| 964 | HGraph* graph_; |
| 965 | |
| 966 | DISALLOW_COPY_AND_ASSIGN(HGraphVisitor); |
| 967 | }; |
| 968 | |
| 969 | } // namespace art |
| 970 | |
| 971 | #endif // ART_COMPILER_OPTIMIZING_NODES_H_ |