| /* |
| * 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_X86_H_ |
| #define ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_H_ |
| |
| #include "arch/x86/instruction_set_features_x86.h" |
| #include "base/enums.h" |
| #include "code_generator.h" |
| #include "driver/compiler_options.h" |
| #include "nodes.h" |
| #include "parallel_move_resolver.h" |
| #include "utils/x86/assembler_x86.h" |
| |
| namespace art { |
| namespace x86 { |
| |
| // Use a local definition to prevent copying mistakes. |
| static constexpr size_t kX86WordSize = static_cast<size_t>(kX86PointerSize); |
| |
| class CodeGeneratorX86; |
| |
| static constexpr Register kParameterCoreRegisters[] = { ECX, EDX, EBX }; |
| static constexpr RegisterPair kParameterCorePairRegisters[] = { ECX_EDX, EDX_EBX }; |
| static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters); |
| static constexpr XmmRegister kParameterFpuRegisters[] = { XMM0, XMM1, XMM2, XMM3 }; |
| static constexpr size_t kParameterFpuRegistersLength = arraysize(kParameterFpuRegisters); |
| |
| static constexpr Register kRuntimeParameterCoreRegisters[] = { EAX, ECX, EDX, EBX }; |
| static constexpr size_t kRuntimeParameterCoreRegistersLength = |
| arraysize(kRuntimeParameterCoreRegisters); |
| static constexpr XmmRegister kRuntimeParameterFpuRegisters[] = { XMM0, XMM1, XMM2, XMM3 }; |
| static constexpr size_t kRuntimeParameterFpuRegistersLength = |
| arraysize(kRuntimeParameterFpuRegisters); |
| |
| class InvokeRuntimeCallingConvention : public CallingConvention<Register, XmmRegister> { |
| public: |
| InvokeRuntimeCallingConvention() |
| : CallingConvention(kRuntimeParameterCoreRegisters, |
| kRuntimeParameterCoreRegistersLength, |
| kRuntimeParameterFpuRegisters, |
| kRuntimeParameterFpuRegistersLength, |
| kX86PointerSize) {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention); |
| }; |
| |
| class InvokeDexCallingConvention : public CallingConvention<Register, XmmRegister> { |
| public: |
| InvokeDexCallingConvention() : CallingConvention( |
| kParameterCoreRegisters, |
| kParameterCoreRegistersLength, |
| kParameterFpuRegisters, |
| kParameterFpuRegistersLength, |
| kX86PointerSize) {} |
| |
| RegisterPair GetRegisterPairAt(size_t argument_index) { |
| DCHECK_LT(argument_index + 1, GetNumberOfRegisters()); |
| return kParameterCorePairRegisters[argument_index]; |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(InvokeDexCallingConvention); |
| }; |
| |
| class InvokeDexCallingConventionVisitorX86 : public InvokeDexCallingConventionVisitor { |
| public: |
| InvokeDexCallingConventionVisitorX86() {} |
| virtual ~InvokeDexCallingConventionVisitorX86() {} |
| |
| 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(InvokeDexCallingConventionVisitorX86); |
| }; |
| |
| class FieldAccessCallingConventionX86 : public FieldAccessCallingConvention { |
| public: |
| FieldAccessCallingConventionX86() {} |
| |
| Location GetObjectLocation() const OVERRIDE { |
| return Location::RegisterLocation(ECX); |
| } |
| Location GetFieldIndexLocation() const OVERRIDE { |
| return Location::RegisterLocation(EAX); |
| } |
| Location GetReturnLocation(Primitive::Type type) const OVERRIDE { |
| return Primitive::Is64BitType(type) |
| ? Location::RegisterPairLocation(EAX, EDX) |
| : Location::RegisterLocation(EAX); |
| } |
| Location GetSetValueLocation(Primitive::Type type, bool is_instance) const OVERRIDE { |
| return Primitive::Is64BitType(type) |
| ? Location::RegisterPairLocation(EDX, EBX) |
| : (is_instance |
| ? Location::RegisterLocation(EDX) |
| : Location::RegisterLocation(ECX)); |
| } |
| Location GetFpuLocation(Primitive::Type type ATTRIBUTE_UNUSED) const OVERRIDE { |
| return Location::FpuRegisterLocation(XMM0); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(FieldAccessCallingConventionX86); |
| }; |
| |
| class ParallelMoveResolverX86 : public ParallelMoveResolverWithSwap { |
| public: |
| ParallelMoveResolverX86(ArenaAllocator* allocator, CodeGeneratorX86* 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; |
| |
| X86Assembler* GetAssembler() const; |
| |
| private: |
| void Exchange(Register reg, int mem); |
| void Exchange(int mem1, int mem2); |
| void Exchange32(XmmRegister reg, int mem); |
| void MoveMemoryToMemory32(int dst, int src); |
| void MoveMemoryToMemory64(int dst, int src); |
| |
| CodeGeneratorX86* const codegen_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ParallelMoveResolverX86); |
| }; |
| |
| class LocationsBuilderX86 : public HGraphVisitor { |
| public: |
| LocationsBuilderX86(HGraph* graph, CodeGeneratorX86* 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_X86(DECLARE_VISIT_INSTRUCTION) |
| |
| #undef DECLARE_VISIT_INSTRUCTION |
| |
| void VisitInstruction(HInstruction* instruction) OVERRIDE { |
| LOG(FATAL) << "Unreachable instruction " << instruction->DebugName() |
| << " (id " << instruction->GetId() << ")"; |
| } |
| |
| private: |
| void HandleBitwiseOperation(HBinaryOperation* instruction); |
| void HandleInvoke(HInvoke* invoke); |
| void HandleCondition(HCondition* condition); |
| void HandleShift(HBinaryOperation* instruction); |
| void HandleFieldSet(HInstruction* instruction, const FieldInfo& field_info); |
| void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info); |
| |
| CodeGeneratorX86* const codegen_; |
| InvokeDexCallingConventionVisitorX86 parameter_visitor_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LocationsBuilderX86); |
| }; |
| |
| class InstructionCodeGeneratorX86 : public InstructionCodeGenerator { |
| public: |
| InstructionCodeGeneratorX86(HGraph* graph, CodeGeneratorX86* 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_X86(DECLARE_VISIT_INSTRUCTION) |
| |
| #undef DECLARE_VISIT_INSTRUCTION |
| |
| void VisitInstruction(HInstruction* instruction) OVERRIDE { |
| LOG(FATAL) << "Unreachable instruction " << instruction->DebugName() |
| << " (id " << instruction->GetId() << ")"; |
| } |
| |
| X86Assembler* GetAssembler() const { return assembler_; } |
| |
| // The compare/jump sequence will generate about (1.5 * num_entries) instructions. A jump |
| // table version generates 7 instructions and num_entries literals. Compare/jump sequence will |
| // generates less code/data with a small num_entries. |
| static constexpr uint32_t kPackedSwitchJumpTableThreshold = 5; |
| |
| 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 GenerateSuspendCheck(HSuspendCheck* check, HBasicBlock* successor); |
| void GenerateClassInitializationCheck(SlowPathCode* slow_path, Register class_reg); |
| void HandleBitwiseOperation(HBinaryOperation* instruction); |
| void GenerateDivRemIntegral(HBinaryOperation* instruction); |
| void DivRemOneOrMinusOne(HBinaryOperation* instruction); |
| void DivByPowerOfTwo(HDiv* instruction); |
| void GenerateDivRemWithAnyConstant(HBinaryOperation* instruction); |
| void GenerateRemFP(HRem* rem); |
| void HandleCondition(HCondition* condition); |
| void HandleShift(HBinaryOperation* instruction); |
| void GenerateShlLong(const Location& loc, Register shifter); |
| void GenerateShrLong(const Location& loc, Register shifter); |
| void GenerateUShrLong(const Location& loc, Register shifter); |
| void GenerateShlLong(const Location& loc, int shift); |
| void GenerateShrLong(const Location& loc, int shift); |
| void GenerateUShrLong(const Location& loc, int shift); |
| |
| void HandleFieldSet(HInstruction* instruction, |
| const FieldInfo& field_info, |
| bool value_can_be_null); |
| void HandleFieldGet(HInstruction* instruction, const FieldInfo& field_info); |
| |
| // Generate a heap reference load using one register `out`: |
| // |
| // out <- *(out + offset) |
| // |
| // while honoring heap poisoning and/or read barriers (if any). |
| // |
| // Location `maybe_temp` is used when generating a read barrier and |
| // shall be a register in that case; it may be an invalid location |
| // otherwise. |
| void GenerateReferenceLoadOneRegister(HInstruction* instruction, |
| Location out, |
| uint32_t offset, |
| Location maybe_temp); |
| // Generate a heap reference load using two different registers |
| // `out` and `obj`: |
| // |
| // out <- *(obj + offset) |
| // |
| // while honoring heap poisoning and/or read barriers (if any). |
| // |
| // Location `maybe_temp` is used when generating a Baker's (fast |
| // path) read barrier and shall be a register in that case; it may |
| // be an invalid location otherwise. |
| void GenerateReferenceLoadTwoRegisters(HInstruction* instruction, |
| Location out, |
| Location obj, |
| uint32_t offset); |
| // Generate a GC root reference load: |
| // |
| // root <- *address |
| // |
| // while honoring read barriers (if any). |
| void GenerateGcRootFieldLoad(HInstruction* instruction, |
| Location root, |
| const Address& address, |
| Label* fixup_label = nullptr, |
| bool requires_read_barrier = kEmitCompilerReadBarrier); |
| |
| // Push value to FPU stack. `is_fp` specifies whether the value is floating point or not. |
| // `is_wide` specifies whether it is long/double or not. |
| void PushOntoFPStack(Location source, uint32_t temp_offset, |
| uint32_t stack_adjustment, bool is_fp, bool is_wide); |
| |
| template<class LabelType> |
| void GenerateTestAndBranch(HInstruction* instruction, |
| size_t condition_input_index, |
| LabelType* true_target, |
| LabelType* false_target); |
| template<class LabelType> |
| void GenerateCompareTestAndBranch(HCondition* condition, |
| LabelType* true_target, |
| LabelType* false_target); |
| template<class LabelType> |
| void GenerateFPJumps(HCondition* cond, LabelType* true_label, LabelType* false_label); |
| template<class LabelType> |
| void GenerateLongComparesAndJumps(HCondition* cond, |
| LabelType* true_label, |
| LabelType* false_label); |
| |
| void HandleGoto(HInstruction* got, HBasicBlock* successor); |
| void GenPackedSwitchWithCompares(Register value_reg, |
| int32_t lower_bound, |
| uint32_t num_entries, |
| HBasicBlock* switch_block, |
| HBasicBlock* default_block); |
| |
| void GenerateFPCompare(Location lhs, Location rhs, HInstruction* insn, bool is_double); |
| |
| X86Assembler* const assembler_; |
| CodeGeneratorX86* const codegen_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InstructionCodeGeneratorX86); |
| }; |
| |
| class JumpTableRIPFixup; |
| |
| class CodeGeneratorX86 : public CodeGenerator { |
| public: |
| CodeGeneratorX86(HGraph* graph, |
| const X86InstructionSetFeatures& isa_features, |
| const CompilerOptions& compiler_options, |
| OptimizingCompilerStats* stats = nullptr); |
| virtual ~CodeGeneratorX86() {} |
| |
| void GenerateFrameEntry() OVERRIDE; |
| void GenerateFrameExit() OVERRIDE; |
| void Bind(HBasicBlock* block) OVERRIDE; |
| void MoveConstant(Location destination, int32_t value) OVERRIDE; |
| void MoveLocation(Location dst, Location src, Primitive::Type dst_type) OVERRIDE; |
| void AddLocationAsTemp(Location location, LocationSummary* locations) OVERRIDE; |
| |
| size_t SaveCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE; |
| size_t RestoreCoreRegister(size_t stack_index, uint32_t reg_id) OVERRIDE; |
| size_t SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE; |
| size_t RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) OVERRIDE; |
| |
| // Generate code to invoke a runtime entry point. |
| void InvokeRuntime(QuickEntrypointEnum entrypoint, |
| HInstruction* instruction, |
| uint32_t dex_pc, |
| SlowPathCode* slow_path = nullptr) OVERRIDE; |
| |
| // Generate code to invoke a runtime entry point, but do not record |
| // PC-related information in a stack map. |
| void InvokeRuntimeWithoutRecordingPcInfo(int32_t entry_point_offset, |
| HInstruction* instruction, |
| SlowPathCode* slow_path); |
| |
| void GenerateInvokeRuntime(int32_t entry_point_offset); |
| |
| size_t GetWordSize() const OVERRIDE { |
| return kX86WordSize; |
| } |
| |
| size_t GetFloatingPointSpillSlotSize() const OVERRIDE { |
| // 8 bytes == 2 words for each spill. |
| return 2 * kX86WordSize; |
| } |
| |
| HGraphVisitor* GetLocationBuilder() OVERRIDE { |
| return &location_builder_; |
| } |
| |
| HGraphVisitor* GetInstructionVisitor() OVERRIDE { |
| return &instruction_visitor_; |
| } |
| |
| X86Assembler* GetAssembler() OVERRIDE { |
| return &assembler_; |
| } |
| |
| const X86Assembler& GetAssembler() const OVERRIDE { |
| return assembler_; |
| } |
| |
| uintptr_t GetAddressOf(HBasicBlock* block) OVERRIDE { |
| return GetLabelOf(block)->Position(); |
| } |
| |
| void SetupBlockedRegisters() const OVERRIDE; |
| |
| void DumpCoreRegister(std::ostream& stream, int reg) const OVERRIDE; |
| void DumpFloatingPointRegister(std::ostream& stream, int reg) const OVERRIDE; |
| |
| // Blocks all register pairs made out of blocked core registers. |
| void UpdateBlockedPairRegisters() const; |
| |
| ParallelMoveResolverX86* GetMoveResolver() OVERRIDE { |
| return &move_resolver_; |
| } |
| |
| InstructionSet GetInstructionSet() const OVERRIDE { |
| return InstructionSet::kX86; |
| } |
| |
| // Helper method to move a 32bits value between two locations. |
| void Move32(Location destination, Location source); |
| // Helper method to move a 64bits value between two locations. |
| void Move64(Location destination, Location source); |
| |
| // Check if the desired_string_load_kind is supported. If it is, return it, |
| // otherwise return a fall-back kind that should be used instead. |
| HLoadString::LoadKind GetSupportedLoadStringKind( |
| HLoadString::LoadKind desired_string_load_kind) OVERRIDE; |
| |
| // Check if the desired_class_load_kind is supported. If it is, return it, |
| // otherwise return a fall-back kind that should be used instead. |
| HLoadClass::LoadKind GetSupportedLoadClassKind( |
| HLoadClass::LoadKind desired_class_load_kind) OVERRIDE; |
| |
| // 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; |
| |
| // Generate a call to a static or direct method. |
| Location GenerateCalleeMethodStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp); |
| void GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp) OVERRIDE; |
| // Generate a call to a virtual method. |
| void GenerateVirtualCall(HInvokeVirtual* invoke, Location temp) OVERRIDE; |
| |
| void RecordSimplePatch(); |
| void RecordStringPatch(HLoadString* load_string); |
| void RecordTypePatch(HLoadClass* load_class); |
| Label* NewPcRelativeDexCacheArrayPatch(const DexFile& dex_file, uint32_t element_offset); |
| |
| void MoveFromReturnRegister(Location trg, Primitive::Type type) OVERRIDE; |
| |
| // Emit linker patches. |
| void EmitLinkerPatches(ArenaVector<LinkerPatch>* linker_patches) OVERRIDE; |
| |
| // Emit a write barrier. |
| void MarkGCCard(Register temp, |
| Register card, |
| Register object, |
| Register value, |
| bool value_can_be_null); |
| |
| void GenerateMemoryBarrier(MemBarrierKind kind); |
| |
| Label* GetLabelOf(HBasicBlock* block) const { |
| return CommonGetLabelOf<Label>(block_labels_, block); |
| } |
| |
| void Initialize() OVERRIDE { |
| block_labels_ = CommonInitializeLabels<Label>(); |
| } |
| |
| bool NeedsTwoRegisters(Primitive::Type type) const OVERRIDE { |
| return type == Primitive::kPrimLong; |
| } |
| |
| bool ShouldSplitLongMoves() const OVERRIDE { return true; } |
| |
| Label* GetFrameEntryLabel() { return &frame_entry_label_; } |
| |
| const X86InstructionSetFeatures& GetInstructionSetFeatures() const { |
| return isa_features_; |
| } |
| |
| void SetMethodAddressOffset(int32_t offset) { |
| method_address_offset_ = offset; |
| } |
| |
| int32_t GetMethodAddressOffset() const { |
| return method_address_offset_; |
| } |
| |
| int32_t ConstantAreaStart() const { |
| return constant_area_start_; |
| } |
| |
| Address LiteralDoubleAddress(double v, Register reg); |
| Address LiteralFloatAddress(float v, Register reg); |
| Address LiteralInt32Address(int32_t v, Register reg); |
| Address LiteralInt64Address(int64_t v, Register reg); |
| |
| // Load a 32-bit value into a register in the most efficient manner. |
| void Load32BitValue(Register dest, int32_t value); |
| |
| // Compare a register with a 32-bit value in the most efficient manner. |
| void Compare32BitValue(Register dest, int32_t value); |
| |
| // Compare int values. Supports only register locations for `lhs`. |
| void GenerateIntCompare(Location lhs, Location rhs); |
| |
| // Construct address for array access. |
| static Address ArrayAddress(Register obj, |
| Location index, |
| ScaleFactor scale, |
| uint32_t data_offset); |
| |
| Address LiteralCaseTable(HX86PackedSwitch* switch_instr, Register reg, Register value); |
| |
| void Finalize(CodeAllocator* allocator) OVERRIDE; |
| |
| // Fast path implementation of ReadBarrier::Barrier for a heap |
| // reference field load when Baker's read barriers are used. |
| void GenerateFieldLoadWithBakerReadBarrier(HInstruction* instruction, |
| Location ref, |
| Register obj, |
| uint32_t offset, |
| bool needs_null_check); |
| // Fast path implementation of ReadBarrier::Barrier for a heap |
| // reference array load when Baker's read barriers are used. |
| void GenerateArrayLoadWithBakerReadBarrier(HInstruction* instruction, |
| Location ref, |
| Register obj, |
| uint32_t data_offset, |
| Location index, |
| bool needs_null_check); |
| // Factored implementation used by GenerateFieldLoadWithBakerReadBarrier |
| // and GenerateArrayLoadWithBakerReadBarrier. |
| void GenerateReferenceLoadWithBakerReadBarrier(HInstruction* instruction, |
| Location ref, |
| Register obj, |
| const Address& src, |
| bool needs_null_check); |
| |
| // Generate a read barrier for a heap reference within `instruction` |
| // using a slow path. |
| // |
| // A read barrier for an object reference read from the heap is |
| // implemented as a call to the artReadBarrierSlow runtime entry |
| // point, which is passed the values in locations `ref`, `obj`, and |
| // `offset`: |
| // |
| // mirror::Object* artReadBarrierSlow(mirror::Object* ref, |
| // mirror::Object* obj, |
| // uint32_t offset); |
| // |
| // The `out` location contains the value returned by |
| // artReadBarrierSlow. |
| // |
| // When `index` is provided (i.e. for array accesses), the offset |
| // value passed to artReadBarrierSlow is adjusted to take `index` |
| // into account. |
| void GenerateReadBarrierSlow(HInstruction* instruction, |
| Location out, |
| Location ref, |
| Location obj, |
| uint32_t offset, |
| Location index = Location::NoLocation()); |
| |
| // If read barriers are enabled, generate a read barrier for a heap |
| // reference using a slow path. If heap poisoning is enabled, also |
| // unpoison the reference in `out`. |
| void MaybeGenerateReadBarrierSlow(HInstruction* instruction, |
| Location out, |
| Location ref, |
| Location obj, |
| uint32_t offset, |
| Location index = Location::NoLocation()); |
| |
| // Generate a read barrier for a GC root within `instruction` using |
| // a slow path. |
| // |
| // A read barrier for an object reference GC root is implemented as |
| // a call to the artReadBarrierForRootSlow runtime entry point, |
| // which is passed the value in location `root`: |
| // |
| // mirror::Object* artReadBarrierForRootSlow(GcRoot<mirror::Object>* root); |
| // |
| // The `out` location contains the value returned by |
| // artReadBarrierForRootSlow. |
| void GenerateReadBarrierForRootSlow(HInstruction* instruction, Location out, Location root); |
| |
| // Ensure that prior stores complete to memory before subsequent loads. |
| // The locked add implementation will avoid serializing device memory, but will |
| // touch (but not change) the top of the stack. |
| // The 'non_temporal' parameter should be used to ensure ordering of non-temporal stores. |
| void MemoryFence(bool non_temporal = false) { |
| if (!non_temporal) { |
| assembler_.lock()->addl(Address(ESP, 0), Immediate(0)); |
| } else { |
| assembler_.mfence(); |
| } |
| } |
| |
| void GenerateNop() OVERRIDE; |
| void GenerateImplicitNullCheck(HNullCheck* instruction) OVERRIDE; |
| void GenerateExplicitNullCheck(HNullCheck* instruction) OVERRIDE; |
| |
| // When we don't know the proper offset for the value, we use kDummy32BitOffset. |
| // The correct value will be inserted when processing Assembler fixups. |
| static constexpr int32_t kDummy32BitOffset = 256; |
| |
| private: |
| Register GetInvokeStaticOrDirectExtraParameter(HInvokeStaticOrDirect* invoke, Register temp); |
| |
| struct PcRelativeDexCacheAccessInfo { |
| PcRelativeDexCacheAccessInfo(const DexFile& dex_file, uint32_t element_off) |
| : target_dex_file(dex_file), element_offset(element_off), label() { } |
| |
| const DexFile& target_dex_file; |
| uint32_t element_offset; |
| // NOTE: Label is bound to the end of the instruction that has an embedded 32-bit offset. |
| Label label; |
| }; |
| |
| // Labels for each block that will be compiled. |
| Label* block_labels_; // Indexed by block id. |
| Label frame_entry_label_; |
| LocationsBuilderX86 location_builder_; |
| InstructionCodeGeneratorX86 instruction_visitor_; |
| ParallelMoveResolverX86 move_resolver_; |
| X86Assembler assembler_; |
| const X86InstructionSetFeatures& isa_features_; |
| |
| // Method patch info. Using ArenaDeque<> which retains element addresses on push/emplace_back(). |
| ArenaDeque<MethodPatchInfo<Label>> method_patches_; |
| ArenaDeque<MethodPatchInfo<Label>> relative_call_patches_; |
| // PC-relative DexCache access info. |
| ArenaDeque<PcRelativeDexCacheAccessInfo> pc_relative_dex_cache_patches_; |
| // Patch locations for patchoat where the linker doesn't do any other work. |
| ArenaDeque<Label> simple_patches_; |
| // String patch locations. |
| ArenaDeque<StringPatchInfo<Label>> string_patches_; |
| // Type patch locations. |
| ArenaDeque<TypePatchInfo<Label>> type_patches_; |
| |
| // Offset to the start of the constant area in the assembled code. |
| // Used for fixups to the constant area. |
| int32_t constant_area_start_; |
| |
| // Fixups for jump tables that need to be patched after the constant table is generated. |
| ArenaVector<JumpTableRIPFixup*> fixups_to_jump_tables_; |
| |
| // If there is a HX86ComputeBaseMethodAddress instruction in the graph |
| // (which shall be the sole instruction of this kind), subtracting this offset |
| // from the value contained in the out register of this HX86ComputeBaseMethodAddress |
| // instruction gives the address of the start of this method. |
| int32_t method_address_offset_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CodeGeneratorX86); |
| }; |
| |
| } // namespace x86 |
| } // namespace art |
| |
| #endif // ART_COMPILER_OPTIMIZING_CODE_GENERATOR_X86_H_ |