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      1 /*
      2  * Copyright (C) 2012 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_LLVM_LLVM_COMPILATION_UNIT_H_
     18 #define ART_COMPILER_LLVM_LLVM_COMPILATION_UNIT_H_
     19 
     20 #include <memory>
     21 #include <string>
     22 #include <vector>
     23 
     24 #include "base/logging.h"
     25 #include "base/mutex.h"
     26 #include "dex/compiler_internals.h"
     27 #include "driver/compiler_driver.h"
     28 #include "driver/dex_compilation_unit.h"
     29 #include "globals.h"
     30 #include "instruction_set.h"
     31 #include "runtime_support_builder.h"
     32 #include "runtime_support_llvm_func.h"
     33 #include "safe_map.h"
     34 
     35 namespace art {
     36   class CompiledMethod;
     37 }
     38 
     39 namespace llvm {
     40   class Function;
     41   class LLVMContext;
     42   class Module;
     43   class raw_ostream;
     44 }
     45 
     46 namespace art {
     47 namespace llvm {
     48 
     49 class CompilerLLVM;
     50 class IRBuilder;
     51 
     52 class LlvmCompilationUnit {
     53  public:
     54   ~LlvmCompilationUnit();
     55 
     56   uint32_t GetCompilationUnitId() const {
     57     return cunit_id_;
     58   }
     59 
     60   InstructionSet GetInstructionSet() const;
     61 
     62   ::llvm::LLVMContext* GetLLVMContext() const {
     63     return context_.get();
     64   }
     65 
     66   ::llvm::Module* GetModule() const {
     67     return module_;
     68   }
     69 
     70   IRBuilder* GetIRBuilder() const {
     71     return irb_.get();
     72   }
     73 
     74   void SetBitcodeFileName(const std::string& bitcode_filename) {
     75     bitcode_filename_ = bitcode_filename;
     76   }
     77 
     78   LLVMInfo* GetQuickContext() const {
     79     return llvm_info_.get();
     80   }
     81   void SetCompilerDriver(CompilerDriver* driver) {
     82     driver_ = driver;
     83   }
     84   DexCompilationUnit* GetDexCompilationUnit() {
     85     return dex_compilation_unit_;
     86   }
     87   void SetDexCompilationUnit(DexCompilationUnit* dex_compilation_unit) {
     88     dex_compilation_unit_ = dex_compilation_unit;
     89   }
     90 
     91   bool Materialize();
     92 
     93   bool IsMaterialized() const {
     94     return !elf_object_.empty();
     95   }
     96 
     97   const std::string& GetElfObject() const {
     98     DCHECK(IsMaterialized());
     99     return elf_object_;
    100   }
    101 
    102  private:
    103   LlvmCompilationUnit(const CompilerLLVM* compiler_llvm,
    104                       size_t cunit_id);
    105 
    106   const CompilerLLVM* compiler_llvm_;
    107   const size_t cunit_id_;
    108 
    109   std::unique_ptr< ::llvm::LLVMContext> context_;
    110   std::unique_ptr<IRBuilder> irb_;
    111   std::unique_ptr<RuntimeSupportBuilder> runtime_support_;
    112   ::llvm::Module* module_;  // Managed by context_
    113   std::unique_ptr<IntrinsicHelper> intrinsic_helper_;
    114   std::unique_ptr<LLVMInfo> llvm_info_;
    115   CompilerDriver* driver_;
    116   DexCompilationUnit* dex_compilation_unit_;
    117 
    118   std::string bitcode_filename_;
    119 
    120   std::string elf_object_;
    121 
    122   SafeMap<const ::llvm::Function*, CompiledMethod*> compiled_methods_map_;
    123 
    124   void CheckCodeAlign(uint32_t offset) const;
    125 
    126   void DumpBitcodeToFile();
    127   void DumpBitcodeToString(std::string& str_buffer);
    128 
    129   bool MaterializeToString(std::string& str_buffer);
    130   bool MaterializeToRawOStream(::llvm::raw_ostream& out_stream);
    131 
    132   friend class CompilerLLVM;  // For LlvmCompilationUnit constructor
    133 };
    134 
    135 }  // namespace llvm
    136 }  // namespace art
    137 
    138 #endif  // ART_COMPILER_LLVM_LLVM_COMPILATION_UNIT_H_
    139