| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |
| #define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |
| |
| #include "instruction_set.h" |
| #include "memory_region.h" |
| #include "nodes.h" |
| #include "utils/assembler.h" |
| |
| namespace art { |
| |
| class CodeAllocator { |
| public: |
| CodeAllocator() { } |
| virtual ~CodeAllocator() { } |
| |
| virtual uint8_t* Allocate(size_t size) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(CodeAllocator); |
| }; |
| |
| class CodeGenerator : public HGraphVisitor { |
| public: |
| // Compiles the graph to executable instructions. Returns whether the compilation |
| // succeeded. |
| static bool CompileGraph( |
| HGraph* graph, InstructionSet instruction_set, CodeAllocator* allocator); |
| |
| Assembler* assembler() const { return assembler_; } |
| |
| // Visit functions for instruction classes. |
| #define DECLARE_VISIT_INSTRUCTION(name) \ |
| virtual void Visit##name(H##name* instr) = 0; |
| |
| FOR_EACH_INSTRUCTION(DECLARE_VISIT_INSTRUCTION) |
| |
| #undef DECLARE_VISIT_INSTRUCTION |
| |
| protected: |
| CodeGenerator(Assembler* assembler, HGraph* graph) |
| : HGraphVisitor(graph), assembler_(assembler), block_labels_(graph->arena(), 0) { |
| block_labels_.SetSize(graph->blocks()->Size()); |
| } |
| |
| Label* GetLabelOf(HBasicBlock* block) const; |
| bool GoesToNextBlock(HGoto* got) const; |
| |
| private: |
| virtual void GenerateFrameEntry() = 0; |
| virtual void GenerateFrameExit() = 0; |
| virtual void Bind(Label* label) = 0; |
| |
| void Compile(CodeAllocator* allocator); |
| void CompileBlock(HBasicBlock* block); |
| |
| Assembler* const assembler_; |
| |
| // Labels for each block that will be compiled. |
| GrowableArray<Label> block_labels_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CodeGenerator); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_H_ |