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 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_() {}

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

  private:
   Label entry_label_;
   Label 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);

   FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)

 #undef DECLARE_VISIT_INSTRUCTION

  private:
   void HandleInvoke(HInvoke* invoke);
   void HandleBinaryOp(HBinaryOperation* operation);
   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 HGraphVisitor {
  public:
   InstructionCodeGeneratorMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen);

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

   FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)

 #undef DECLARE_VISIT_INSTRUCTION

   Mips64Assembler* GetAssembler() const { return assembler_; }

  private:
   // Generate code for the given suspend check. If not null, `successor`
   // is the block to branch to if the suspend check is not needed, and after
   // the suspend call.
   void GenerateClassInitializationCheck(SlowPathCodeMIPS64* slow_path, GpuRegister class_reg);
   void GenerateMemoryBarrier(MemBarrierKind kind);
   void GenerateSuspendCheck(HSuspendCheck* check, HBasicBlock* successor);
   void HandleBinaryOp(HBinaryOperation* operation);
   void HandleShift(HBinaryOperation* operation);
   void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
   void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
   void GenerateImplicitNullCheck(HNullCheck* instruction);
   void GenerateExplicitNullCheck(HNullCheck* instruction);
   void GenerateTestAndBranch(HInstruction* instruction,
                              Label* true_target,
                              Label* false_target,
                              Label* always_true_target);

   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);
   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 GetLabelOf(block)->Position();
   }

   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);

   // Register allocation.

   void SetupBlockedRegisters(bool is_baseline) const OVERRIDE;
   // AllocateFreeRegister() is only used when allocating registers locally
   // during CompileBaseline().
   Location AllocateFreeRegister(Primitive::Type type) 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_;
   }

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

   void Initialize() OVERRIDE {
     block_labels_.SetSize(GetGraph()->GetBlocks().Size());
   }

   void Finalize(CodeAllocator* allocator) OVERRIDE;

   // Code generation helpers.

   void MoveLocation(Location destination, Location source, Primitive::Type type);

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

   // Generate code to invoke a runtime entry point.
   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; }

   void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp);

  private:
   // Labels for each block that will be compiled.
   GrowableArray<Label> block_labels_;
   Label 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 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_() {}

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

	private:
	Label entry_label_;
	Label 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);

	FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)

	#undef DECLARE_VISIT_INSTRUCTION

	private:
	void HandleInvoke(HInvoke* invoke);
	void HandleBinaryOp(HBinaryOperation* operation);
	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 HGraphVisitor {
	public:
	InstructionCodeGeneratorMIPS64(HGraph* graph, CodeGeneratorMIPS64* codegen);

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

	FOR_EACH_CONCRETE_INSTRUCTION(DECLARE_VISIT_INSTRUCTION)

	#undef DECLARE_VISIT_INSTRUCTION

	Mips64Assembler* GetAssembler() const { return assembler_; }

	private:
	// Generate code for the given suspend check. If not null, `successor`
	// is the block to branch to if the suspend check is not needed, and after
	// the suspend call.
	void GenerateClassInitializationCheck(SlowPathCodeMIPS64* slow_path, GpuRegister class_reg);
	void GenerateMemoryBarrier(MemBarrierKind kind);
	void GenerateSuspendCheck(HSuspendCheck* check, HBasicBlock* successor);
	void HandleBinaryOp(HBinaryOperation* operation);
	void HandleShift(HBinaryOperation* operation);
	void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info);
	void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info);
	void GenerateImplicitNullCheck(HNullCheck* instruction);
	void GenerateExplicitNullCheck(HNullCheck* instruction);
	void GenerateTestAndBranch(HInstruction* instruction,
	Label* true_target,
	Label* false_target,
	Label* always_true_target);

	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);
	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 GetLabelOf(block)->Position();
	}

	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);

	// Register allocation.

	void SetupBlockedRegisters(bool is_baseline) const OVERRIDE;
	// AllocateFreeRegister() is only used when allocating registers locally
	// during CompileBaseline().
	Location AllocateFreeRegister(Primitive::Type type) 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_;
	}

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

	void Initialize() OVERRIDE {
	block_labels_.SetSize(GetGraph()->GetBlocks().Size());
	}

	void Finalize(CodeAllocator* allocator) OVERRIDE;

	// Code generation helpers.

	void MoveLocation(Location destination, Location source, Primitive::Type type);

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

	// Generate code to invoke a runtime entry point.
	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; }

	void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp);

	private:
	// Labels for each block that will be compiled.
	GrowableArray<Label> block_labels_;
	Label 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_