compiler/optimizing/code_generator_mips64.h - platform/art - Git at Google

 /*
  * Copyright (C) 2015 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_MIPS64_H_
 #define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_MIPS64_H_

 #include "code_generator.h"
 #include "dex/compiler_enums.h"
 #include "driver/compiler_options.h"
 #include "nodes.h"
 #include "parallel_move_resolver.h"
 #include "utils/mips64/assembler_mips64.h"

 namespace art {
 namespace mips64 {

 // Use a local definition to prevent copying mistakes.
 static constexpr size_t kMips64WordSize = kMips64PointerSize;


 // InvokeDexCallingConvention registers

 static constexpr GpuRegister kParameterCoreRegisters[] =
     { A1, A2, A3, A4, A5, A6, A7 };
 static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);

 static constexpr FpuRegister kParameterFpuRegisters[] =
     { F13, F14, F15, F16, F17, F18, F19 };
 static constexpr size_t kParameterFpuRegistersLength = arraysize(kParameterFpuRegisters);


 // InvokeRuntimeCallingConvention registers

 static constexpr GpuRegister kRuntimeParameterCoreRegisters[] =
     { A0, A1, A2, A3, A4, A5, A6, A7 };
 static constexpr size_t kRuntimeParameterCoreRegistersLength =
     arraysize(kRuntimeParameterCoreRegisters);

 static constexpr FpuRegister kRuntimeParameterFpuRegisters[] =
     { F12, F13, F14, F15, F16, F17, F18, F19 };
 static constexpr size_t kRuntimeParameterFpuRegistersLength =
     arraysize(kRuntimeParameterFpuRegisters);


 static constexpr GpuRegister kCoreCalleeSaves[] =
     { S0, S1, S2, S3, S4, S5, S6, S7, GP, S8, RA };  // TODO: review
 static constexpr FpuRegister kFpuCalleeSaves[] =
     { F24, F25, F26, F27, F28, F29, F30, F31 };


 class CodeGeneratorMIPS64;

 class InvokeDexCallingConvention : public CallingConvention<GpuRegister, FpuRegister> {
  public:
   InvokeDexCallingConvention()
       : CallingConvention(kParameterCoreRegisters,
                           kParameterCoreRegistersLength,
                           kParameterFpuRegisters,
                           kParameterFpuRegistersLength,
                           kMips64PointerSize) {}

  private:
   DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
 };

 class InvokeDexCallingConventionVisitorMIPS64 : public InvokeDexCallingConventionVisitor {
  public:
   InvokeDexCallingConventionVisitorMIPS64() {}
   virtual ~InvokeDexCallingConventionVisitorMIPS64() {}

   Location GetNextLocation(Primitive::Type type) OVERRIDE;
   Location GetReturnLocation(Primitive::Type type) const OVERRIDE;
   Location GetMethodLocation() const OVERRIDE;

  private:
   InvokeDexCallingConvention calling_convention;

   DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitorMIPS64);
 };

 class InvokeRuntimeCallingConvention : public CallingConvention<GpuRegister, FpuRegister> {
  public:
   InvokeRuntimeCallingConvention()
       : CallingConvention(kRuntimeParameterCoreRegisters,
                           kRuntimeParameterCoreRegistersLength,
                           kRuntimeParameterFpuRegisters,
                           kRuntimeParameterFpuRegistersLength,
                           kMips64PointerSize) {}

   Location GetReturnLocation(Primitive::Type return_type);

  private:
   DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention);
 };

 class FieldAccessCallingConventionMIPS64 : public FieldAccessCallingConvention {
  public:
   FieldAccessCallingConventionMIPS64() {}

   Location GetObjectLocation() const OVERRIDE {
     return Location::RegisterLocation(A1);
   }
   Location GetFieldIndexLocation() const OVERRIDE {
     return Location::RegisterLocation(A0);
   }
   Location GetReturnLocation(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
     return Location::RegisterLocation(V0);
   }
   Location GetSetValueLocation(Primitive::Type type, bool is_instance) const OVERRIDE {
     return Primitive::Is64BitType(type)
         ? Location::RegisterLocation(A2)
         : (is_instance
             ? Location::RegisterLocation(A2)
             : Location::RegisterLocation(A1));
   }
   Location GetFpuLocation(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
     return Location::FpuRegisterLocation(F0);
   }

  private:
   DISALLOW_COPY_AND_ASSIGN(FieldAccessCallingConventionMIPS64);
 };

 class ParallelMoveResolverMIPS64 : public ParallelMoveResolverWithSwap {
  public:
   ParallelMoveResolverMIPS64(ArenaAllocator* allocator, CodeGeneratorMIPS64* codegen)
       : ParallelMoveResolverWithSwap(allocator), codegen_(codegen) {}

   void EmitMove(size_t index) OVERRIDE;
   void EmitSwap(size_t index) OVERRIDE;
   void SpillScratch(int reg) OVERRIDE;
   void RestoreScratch(int reg) OVERRIDE;

   void Exchange(int index1, int index2, bool double_slot);

   Mips64Assembler* GetAssembler() const;

  private:
   CodeGeneratorMIPS64* const codegen_;

   DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverMIPS64);
 };

 class SlowPathCodeMIPS64 : public SlowPathCode {
  public:
   SlowPathCodeMIPS64() : entry_label_(), exit_label_() {}

   Mips64Label* GetEntryLabel() { return &entry_label_; }
   Mips64Label* GetExitLabel() { return &exit_label_; }

  private:
   Mips64Label entry_label_;
   Mips64Label exit_label_;

   DISALLOW_COPY_AND_ASSIGN(SlowPathCodeMIPS64);
 };

 class LocationsBuilderMIPS64 : public HGraphVisitor {
  public:
   LocationsBuilderMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen)
       : HGraphVisitor(graph), codegen_(codegen) {}

 #define DECLARE_VISIT_INSTRUCTION(name, super)     \
   void Visit##name(H##name* instr) OVERRIDE;

   FOR_EACH_CONCRETE_INSTRUCTION_COMMON(DECLARE_VISIT_INSTRUCTION)
   FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(DECLARE_VISIT_INSTRUCTION)

 #undef DECLARE_VISIT_INSTRUCTION

   void VisitInstruction(HInstruction* instruction) OVERRIDE {
     LOG(FATAL) << "Unreachable instruction " << instruction->DebugName()
                << " (id " << instruction->GetId() << ")";
   }

  private:
   void HandleInvoke(HInvoke* invoke);
   void HandleBinaryOp(HBinaryOperation* operation);
   void HandleCondition(HCondition* instruction);
   void HandleShift(HBinaryOperation* operation);
   void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
   void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);

   InvokeDexCallingConventionVisitorMIPS64 parameter_visitor_;

   CodeGeneratorMIPS64* const codegen_;

   DISALLOW_COPY_AND_ASSIGN(LocationsBuilderMIPS64);
 };

 class InstructionCodeGeneratorMIPS64 : public InstructionCodeGenerator {
  public:
   InstructionCodeGeneratorMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen);

 #define DECLARE_VISIT_INSTRUCTION(name, super)     \
   void Visit##name(H##name* instr) OVERRIDE;

   FOR_EACH_CONCRETE_INSTRUCTION_COMMON(DECLARE_VISIT_INSTRUCTION)
   FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(DECLARE_VISIT_INSTRUCTION)

 #undef DECLARE_VISIT_INSTRUCTION

   void VisitInstruction(HInstruction* instruction) OVERRIDE {
     LOG(FATAL) << "Unreachable instruction " << instruction->DebugName()
                << " (id " << instruction->GetId() << ")";
   }

   Mips64Assembler* GetAssembler() const { return assembler_; }

  private:
   void GenerateClassInitializationCheck(SlowPathCodeMIPS64* slow_path, GpuRegister class_reg);
   void GenerateMemoryBarrier(MemBarrierKind kind);
   void GenerateSuspendCheck(HSuspendCheck* check, HBasicBlock* successor);
   void HandleBinaryOp(HBinaryOperation* operation);
   void HandleCondition(HCondition* instruction);
   void HandleShift(HBinaryOperation* operation);
   void HandleFieldSet(HInstruction* instruction,
                       const FieldInfo& field_info,
                       bool value_can_be_null);
   void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
   void GenerateImplicitNullCheck(HNullCheck* instruction);
   void GenerateExplicitNullCheck(HNullCheck* instruction);
   void GenerateTestAndBranch(HInstruction* instruction,
                              size_t condition_input_index,
                              Mips64Label* true_target,
                              Mips64Label* false_target);
   void DivRemOneOrMinusOne(HBinaryOperation* instruction);
   void DivRemByPowerOfTwo(HBinaryOperation* instruction);
   void GenerateDivRemWithAnyConstant(HBinaryOperation* instruction);
   void GenerateDivRemIntegral(HBinaryOperation* instruction);
   void GenerateIntLongCompare(IfCondition cond, bool is64bit, LocationSummary* locations);
   void GenerateIntLongCompareAndBranch(IfCondition cond,
                                        bool is64bit,
                                        LocationSummary* locations,
                                        Mips64Label* label);
   void GenerateFpCompareAndBranch(IfCondition cond,
                                   bool gt_bias,
                                   Primitive::Type type,
                                   LocationSummary* locations,
                                   Mips64Label* label);
   void HandleGoto(HInstruction* got, HBasicBlock* successor);

   Mips64Assembler* const assembler_;
   CodeGeneratorMIPS64* const codegen_;

   DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorMIPS64);
 };

 class CodeGeneratorMIPS64 : public CodeGenerator {
  public:
   CodeGeneratorMIPS64(HGraph* graph,
                       const Mips64InstructionSetFeatures& isa_features,
                       const CompilerOptions& compiler_options,
                       OptimizingCompilerStats* stats = nullptr);
   virtual ~CodeGeneratorMIPS64() {}

   void GenerateFrameEntry() OVERRIDE;
   void GenerateFrameExit() OVERRIDE;

   void Bind(HBasicBlock* block) OVERRIDE;

   void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;

   size_t GetWordSize() const OVERRIDE { return kMips64WordSize; }

   size_t GetFloatingPointSpillSlotSize() const OVERRIDE { return kMips64WordSize; }

   uintptr_t GetAddressOf(HBasicBlock* block) const OVERRIDE {
     return assembler_.GetLabelLocation(GetLabelOf(block));
   }

   HGraphVisitor* GetLocationBuilder() OVERRIDE { return &location_builder_; }
   HGraphVisitor* GetInstructionVisitor() OVERRIDE { return &instruction_visitor_; }
   Mips64Assembler* GetAssembler() OVERRIDE { return &assembler_; }
   const Mips64Assembler& GetAssembler() const OVERRIDE { return assembler_; }

   void MarkGCCard(GpuRegister object, GpuRegister value, bool value_can_be_null);

   // Register allocation.

   void SetupBlockedRegisters() const OVERRIDE;

   Location GetStackLocation(HLoadLocal* load) const OVERRIDE;

   size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id);
   size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id);
   size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id);
   size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id);

   void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
   void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;

   InstructionSet GetInstructionSet() const OVERRIDE { return InstructionSet::kMips64; }

   const Mips64InstructionSetFeatures& GetInstructionSetFeatures() const {
     return isa_features_;
   }

   Mips64Label* GetLabelOf(HBasicBlock* block) const {
     return CommonGetLabelOf<Mips64Label>(block_labels_, block);
   }

   void Initialize() OVERRIDE {
     block_labels_ = CommonInitializeLabels<Mips64Label>();
   }

   void Finalize(CodeAllocator* allocator) OVERRIDE;

   // Code generation helpers.
   void MoveLocation(Location dst, Location src, Primitive::Type dst_type) OVERRIDE;

   void MoveConstant(Location destination, int32_t value) OVERRIDE;

   void AddLocationAsTemp(Location location, LocationSummary* locations) OVERRIDE;


   void SwapLocations(Location loc1, Location loc2, Primitive::Type type);

   // Generate code to invoke a runtime entry point.
   void InvokeRuntime(QuickEntrypointEnum entrypoint,
                      HInstruction* instruction,
                      uint32_t dex_pc,
                      SlowPathCode* slow_path) OVERRIDE;

   void InvokeRuntime(int32_t offset,
                      HInstruction* instruction,
                      uint32_t dex_pc,
                      SlowPathCode* slow_path);

   ParallelMoveResolver* GetMoveResolver() OVERRIDE { return &move_resolver_; }

   bool NeedsTwoRegisters(Primitive::Type type ATTRIBUTE_UNUSED) const { return false; }

   // Check if the desired_dispatch_info is supported. If it is, return it,
   // otherwise return a fall-back info that should be used instead.
   HInvokeStaticOrDirect::DispatchInfo GetSupportedInvokeStaticOrDirectDispatch(
       const HInvokeStaticOrDirect::DispatchInfo& desired_dispatch_info,
       MethodReference target_method) OVERRIDE;

   void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp) OVERRIDE;
   void GenerateVirtualCall(HInvokeVirtual* invoke, Location temp) OVERRIDE;

   void MoveFromReturnRegister(Location trg ATTRIBUTE_UNUSED,
                               Primitive::Type type ATTRIBUTE_UNUSED) OVERRIDE {
     UNIMPLEMENTED(FATAL);
   }

  private:
   // Labels for each block that will be compiled.
   Mips64Label* block_labels_;  // Indexed by block id.
   Mips64Label frame_entry_label_;
   LocationsBuilderMIPS64 location_builder_;
   InstructionCodeGeneratorMIPS64 instruction_visitor_;
   ParallelMoveResolverMIPS64 move_resolver_;
   Mips64Assembler assembler_;
   const Mips64InstructionSetFeatures& isa_features_;

   DISALLOW_COPY_AND_ASSIGN(CodeGeneratorMIPS64);
 };

 }  // namespace mips64
 }  // namespace art

 #endif  // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_MIPS64_H_
	/*
	* Copyright (C) 2015 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_MIPS64_H_
	#define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_MIPS64_H_

	#include "code_generator.h"
	#include "dex/compiler_enums.h"
	#include "driver/compiler_options.h"
	#include "nodes.h"
	#include "parallel_move_resolver.h"
	#include "utils/mips64/assembler_mips64.h"

	namespace art {
	namespace mips64 {

	// Use a local definition to prevent copying mistakes.
	static constexpr size_t kMips64WordSize = kMips64PointerSize;


	// InvokeDexCallingConvention registers

	static constexpr GpuRegister kParameterCoreRegisters[] =
	{ A1, A2, A3, A4, A5, A6, A7 };
	static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);

	static constexpr FpuRegister kParameterFpuRegisters[] =
	{ F13, F14, F15, F16, F17, F18, F19 };
	static constexpr size_t kParameterFpuRegistersLength = arraysize(kParameterFpuRegisters);


	// InvokeRuntimeCallingConvention registers

	static constexpr GpuRegister kRuntimeParameterCoreRegisters[] =
	{ A0, A1, A2, A3, A4, A5, A6, A7 };
	static constexpr size_t kRuntimeParameterCoreRegistersLength =
	arraysize(kRuntimeParameterCoreRegisters);

	static constexpr FpuRegister kRuntimeParameterFpuRegisters[] =
	{ F12, F13, F14, F15, F16, F17, F18, F19 };
	static constexpr size_t kRuntimeParameterFpuRegistersLength =
	arraysize(kRuntimeParameterFpuRegisters);


	static constexpr GpuRegister kCoreCalleeSaves[] =
	{ S0, S1, S2, S3, S4, S5, S6, S7, GP, S8, RA }; // TODO: review
	static constexpr FpuRegister kFpuCalleeSaves[] =
	{ F24, F25, F26, F27, F28, F29, F30, F31 };


	class CodeGeneratorMIPS64;

	class InvokeDexCallingConvention : public CallingConvention<GpuRegister, FpuRegister> {
	public:
	InvokeDexCallingConvention()
	: CallingConvention(kParameterCoreRegisters,
	kParameterCoreRegistersLength,
	kParameterFpuRegisters,
	kParameterFpuRegistersLength,
	kMips64PointerSize) {}

	private:
	DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention);
	};

	class InvokeDexCallingConventionVisitorMIPS64 : public InvokeDexCallingConventionVisitor {
	public:
	InvokeDexCallingConventionVisitorMIPS64() {}
	virtual ~InvokeDexCallingConventionVisitorMIPS64() {}

	Location GetNextLocation(Primitive::Type type) OVERRIDE;
	Location GetReturnLocation(Primitive::Type type) const OVERRIDE;
	Location GetMethodLocation() const OVERRIDE;

	private:
	InvokeDexCallingConvention calling_convention;

	DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConventionVisitorMIPS64);
	};

	class InvokeRuntimeCallingConvention : public CallingConvention<GpuRegister, FpuRegister> {
	public:
	InvokeRuntimeCallingConvention()
	: CallingConvention(kRuntimeParameterCoreRegisters,
	kRuntimeParameterCoreRegistersLength,
	kRuntimeParameterFpuRegisters,
	kRuntimeParameterFpuRegistersLength,
	kMips64PointerSize) {}

	Location GetReturnLocation(Primitive::Type return_type);

	private:
	DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention);
	};

	class FieldAccessCallingConventionMIPS64 : public FieldAccessCallingConvention {
	public:
	FieldAccessCallingConventionMIPS64() {}

	Location GetObjectLocation() const OVERRIDE {
	return Location::RegisterLocation(A1);
	}
	Location GetFieldIndexLocation() const OVERRIDE {
	return Location::RegisterLocation(A0);
	}
	Location GetReturnLocation(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
	return Location::RegisterLocation(V0);
	}
	Location GetSetValueLocation(Primitive::Type type, bool is_instance) const OVERRIDE {
	return Primitive::Is64BitType(type)
	? Location::RegisterLocation(A2)
	: (is_instance
	? Location::RegisterLocation(A2)
	: Location::RegisterLocation(A1));
	}
	Location GetFpuLocation(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE {
	return Location::FpuRegisterLocation(F0);
	}

	private:
	DISALLOW_COPY_AND_ASSIGN(FieldAccessCallingConventionMIPS64);
	};

	class ParallelMoveResolverMIPS64 : public ParallelMoveResolverWithSwap {
	public:
	ParallelMoveResolverMIPS64(ArenaAllocator* allocator, CodeGeneratorMIPS64* codegen)
	: ParallelMoveResolverWithSwap(allocator), codegen_(codegen) {}

	void EmitMove(size_t index) OVERRIDE;
	void EmitSwap(size_t index) OVERRIDE;
	void SpillScratch(int reg) OVERRIDE;
	void RestoreScratch(int reg) OVERRIDE;

	void Exchange(int index1, int index2, bool double_slot);

	Mips64Assembler* GetAssembler() const;

	private:
	CodeGeneratorMIPS64* const codegen_;

	DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverMIPS64);
	};

	class SlowPathCodeMIPS64 : public SlowPathCode {
	public:
	SlowPathCodeMIPS64() : entry_label_(), exit_label_() {}

	Mips64Label* GetEntryLabel() { return &entry_label_; }
	Mips64Label* GetExitLabel() { return &exit_label_; }

	private:
	Mips64Label entry_label_;
	Mips64Label exit_label_;

	DISALLOW_COPY_AND_ASSIGN(SlowPathCodeMIPS64);
	};

	class LocationsBuilderMIPS64 : public HGraphVisitor {
	public:
	LocationsBuilderMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen)
	: HGraphVisitor(graph), codegen_(codegen) {}

	#define DECLARE_VISIT_INSTRUCTION(name, super) \
	void Visit##name(H##name* instr) OVERRIDE;

	FOR_EACH_CONCRETE_INSTRUCTION_COMMON(DECLARE_VISIT_INSTRUCTION)
	FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(DECLARE_VISIT_INSTRUCTION)

	#undef DECLARE_VISIT_INSTRUCTION

	void VisitInstruction(HInstruction* instruction) OVERRIDE {
	LOG(FATAL) << "Unreachable instruction " << instruction->DebugName()
	<< " (id " << instruction->GetId() << ")";
	}

	private:
	void HandleInvoke(HInvoke* invoke);
	void HandleBinaryOp(HBinaryOperation* operation);
	void HandleCondition(HCondition* instruction);
	void HandleShift(HBinaryOperation* operation);
	void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
	void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);

	InvokeDexCallingConventionVisitorMIPS64 parameter_visitor_;

	CodeGeneratorMIPS64* const codegen_;

	DISALLOW_COPY_AND_ASSIGN(LocationsBuilderMIPS64);
	};

	class InstructionCodeGeneratorMIPS64 : public InstructionCodeGenerator {
	public:
	InstructionCodeGeneratorMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen);

	#define DECLARE_VISIT_INSTRUCTION(name, super) \
	void Visit##name(H##name* instr) OVERRIDE;

	FOR_EACH_CONCRETE_INSTRUCTION_COMMON(DECLARE_VISIT_INSTRUCTION)
	FOR_EACH_CONCRETE_INSTRUCTION_MIPS64(DECLARE_VISIT_INSTRUCTION)

	#undef DECLARE_VISIT_INSTRUCTION

	void VisitInstruction(HInstruction* instruction) OVERRIDE {
	LOG(FATAL) << "Unreachable instruction " << instruction->DebugName()
	<< " (id " << instruction->GetId() << ")";
	}

	Mips64Assembler* GetAssembler() const { return assembler_; }

	private:
	void GenerateClassInitializationCheck(SlowPathCodeMIPS64* slow_path, GpuRegister class_reg);
	void GenerateMemoryBarrier(MemBarrierKind kind);
	void GenerateSuspendCheck(HSuspendCheck* check, HBasicBlock* successor);
	void HandleBinaryOp(HBinaryOperation* operation);
	void HandleCondition(HCondition* instruction);
	void HandleShift(HBinaryOperation* operation);
	void HandleFieldSet(HInstruction* instruction,
	const FieldInfo& field_info,
	bool value_can_be_null);
	void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
	void GenerateImplicitNullCheck(HNullCheck* instruction);
	void GenerateExplicitNullCheck(HNullCheck* instruction);
	void GenerateTestAndBranch(HInstruction* instruction,
	size_t condition_input_index,
	Mips64Label* true_target,
	Mips64Label* false_target);
	void DivRemOneOrMinusOne(HBinaryOperation* instruction);
	void DivRemByPowerOfTwo(HBinaryOperation* instruction);
	void GenerateDivRemWithAnyConstant(HBinaryOperation* instruction);
	void GenerateDivRemIntegral(HBinaryOperation* instruction);
	void GenerateIntLongCompare(IfCondition cond, bool is64bit, LocationSummary* locations);
	void GenerateIntLongCompareAndBranch(IfCondition cond,
	bool is64bit,
	LocationSummary* locations,
	Mips64Label* label);
	void GenerateFpCompareAndBranch(IfCondition cond,
	bool gt_bias,
	Primitive::Type type,
	LocationSummary* locations,
	Mips64Label* label);
	void HandleGoto(HInstruction* got, HBasicBlock* successor);

	Mips64Assembler* const assembler_;
	CodeGeneratorMIPS64* const codegen_;

	DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorMIPS64);
	};

	class CodeGeneratorMIPS64 : public CodeGenerator {
	public:
	CodeGeneratorMIPS64(HGraph* graph,
	const Mips64InstructionSetFeatures& isa_features,
	const CompilerOptions& compiler_options,
	OptimizingCompilerStats* stats = nullptr);
	virtual ~CodeGeneratorMIPS64() {}

	void GenerateFrameEntry() OVERRIDE;
	void GenerateFrameExit() OVERRIDE;

	void Bind(HBasicBlock* block) OVERRIDE;

	void Move(HInstruction* instruction, Location location, HInstruction* move_for) OVERRIDE;

	size_t GetWordSize() const OVERRIDE { return kMips64WordSize; }

	size_t GetFloatingPointSpillSlotSize() const OVERRIDE { return kMips64WordSize; }

	uintptr_t GetAddressOf(HBasicBlock* block) const OVERRIDE {
	return assembler_.GetLabelLocation(GetLabelOf(block));
	}

	HGraphVisitor* GetLocationBuilder() OVERRIDE { return &location_builder_; }
	HGraphVisitor* GetInstructionVisitor() OVERRIDE { return &instruction_visitor_; }
	Mips64Assembler* GetAssembler() OVERRIDE { return &assembler_; }
	const Mips64Assembler& GetAssembler() const OVERRIDE { return assembler_; }

	void MarkGCCard(GpuRegister object, GpuRegister value, bool value_can_be_null);

	// Register allocation.

	void SetupBlockedRegisters() const OVERRIDE;

	Location GetStackLocation(HLoadLocal* load) const OVERRIDE;

	size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id);
	size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id);
	size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id);
	size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id);

	void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE;
	void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE;

	InstructionSet GetInstructionSet() const OVERRIDE { return InstructionSet::kMips64; }

	const Mips64InstructionSetFeatures& GetInstructionSetFeatures() const {
	return isa_features_;
	}

	Mips64Label* GetLabelOf(HBasicBlock* block) const {
	return CommonGetLabelOf<Mips64Label>(block_labels_, block);
	}

	void Initialize() OVERRIDE {
	block_labels_ = CommonInitializeLabels<Mips64Label>();
	}

	void Finalize(CodeAllocator* allocator) OVERRIDE;

	// Code generation helpers.
	void MoveLocation(Location dst, Location src, Primitive::Type dst_type) OVERRIDE;

	void MoveConstant(Location destination, int32_t value) OVERRIDE;

	void AddLocationAsTemp(Location location, LocationSummary* locations) OVERRIDE;


	void SwapLocations(Location loc1, Location loc2, Primitive::Type type);

	// Generate code to invoke a runtime entry point.
	void InvokeRuntime(QuickEntrypointEnum entrypoint,
	HInstruction* instruction,
	uint32_t dex_pc,
	SlowPathCode* slow_path) OVERRIDE;

	void InvokeRuntime(int32_t offset,
	HInstruction* instruction,
	uint32_t dex_pc,
	SlowPathCode* slow_path);

	ParallelMoveResolver* GetMoveResolver() OVERRIDE { return &move_resolver_; }

	bool NeedsTwoRegisters(Primitive::Type type ATTRIBUTE_UNUSED) const { return false; }

	// Check if the desired_dispatch_info is supported. If it is, return it,
	// otherwise return a fall-back info that should be used instead.
	HInvokeStaticOrDirect::DispatchInfo GetSupportedInvokeStaticOrDirectDispatch(
	const HInvokeStaticOrDirect::DispatchInfo& desired_dispatch_info,
	MethodReference target_method) OVERRIDE;

	void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp) OVERRIDE;
	void GenerateVirtualCall(HInvokeVirtual* invoke, Location temp) OVERRIDE;

	void MoveFromReturnRegister(Location trg ATTRIBUTE_UNUSED,
	Primitive::Type type ATTRIBUTE_UNUSED) OVERRIDE {
	UNIMPLEMENTED(FATAL);
	}

	private:
	// Labels for each block that will be compiled.
	Mips64Label* block_labels_; // Indexed by block id.
	Mips64Label frame_entry_label_;
	LocationsBuilderMIPS64 location_builder_;
	InstructionCodeGeneratorMIPS64 instruction_visitor_;
	ParallelMoveResolverMIPS64 move_resolver_;
	Mips64Assembler assembler_;
	const Mips64InstructionSetFeatures& isa_features_;

	DISALLOW_COPY_AND_ASSIGN(CodeGeneratorMIPS64);
	};

	} // namespace mips64
	} // namespace art

	#endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_MIPS64_H_