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      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_BUILDER_H_
     18 #define ART_COMPILER_OPTIMIZING_BUILDER_H_
     19 
     20 #include "base/arena_object.h"
     21 #include "base/array_ref.h"
     22 #include "dex/code_item_accessors.h"
     23 #include "dex/dex_file-inl.h"
     24 #include "dex/dex_file.h"
     25 #include "driver/compiler_driver.h"
     26 #include "nodes.h"
     27 
     28 namespace art {
     29 
     30 class ArtMethod;
     31 class CodeGenerator;
     32 class DexCompilationUnit;
     33 class OptimizingCompilerStats;
     34 
     35 class HGraphBuilder : public ValueObject {
     36  public:
     37   HGraphBuilder(HGraph* graph,
     38                 const CodeItemDebugInfoAccessor& accessor,
     39                 const DexCompilationUnit* dex_compilation_unit,
     40                 const DexCompilationUnit* outer_compilation_unit,
     41                 CompilerDriver* driver,
     42                 CodeGenerator* code_generator,
     43                 OptimizingCompilerStats* compiler_stats,
     44                 ArrayRef<const uint8_t> interpreter_metadata,
     45                 VariableSizedHandleScope* handles);
     46 
     47   // Only for unit testing.
     48   HGraphBuilder(HGraph* graph,
     49                 const DexCompilationUnit* dex_compilation_unit,
     50                 const CodeItemDebugInfoAccessor& accessor,
     51                 VariableSizedHandleScope* handles,
     52                 DataType::Type return_type = DataType::Type::kInt32);
     53 
     54   GraphAnalysisResult BuildGraph();
     55   void BuildIntrinsicGraph(ArtMethod* method);
     56 
     57   static constexpr const char* kBuilderPassName = "builder";
     58 
     59  private:
     60   bool SkipCompilation(size_t number_of_branches);
     61 
     62   HGraph* const graph_;
     63   const DexFile* const dex_file_;
     64   const CodeItemDebugInfoAccessor code_item_accessor_;  // null for intrinsic graph.
     65 
     66   // The compilation unit of the current method being compiled. Note that
     67   // it can be an inlined method.
     68   const DexCompilationUnit* const dex_compilation_unit_;
     69 
     70   // The compilation unit of the enclosing method being compiled.
     71   const DexCompilationUnit* const outer_compilation_unit_;
     72 
     73   CompilerDriver* const compiler_driver_;
     74   CodeGenerator* const code_generator_;
     75 
     76   OptimizingCompilerStats* const compilation_stats_;
     77   const ArrayRef<const uint8_t> interpreter_metadata_;
     78   VariableSizedHandleScope* const handles_;
     79   const DataType::Type return_type_;
     80 
     81   DISALLOW_COPY_AND_ASSIGN(HGraphBuilder);
     82 };
     83 
     84 }  // namespace art
     85 
     86 #endif  // ART_COMPILER_OPTIMIZING_BUILDER_H_
     87