| /* |
| * 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. |
| */ |
| |
| #include "code_generator_arm64.h" |
| |
| #include "entrypoints/quick/quick_entrypoints.h" |
| #include "gc/accounting/card_table.h" |
| #include "mirror/array-inl.h" |
| #include "mirror/art_method.h" |
| #include "mirror/class.h" |
| #include "thread.h" |
| #include "utils/arm64/assembler_arm64.h" |
| #include "utils/assembler.h" |
| #include "utils/stack_checks.h" |
| |
| |
| using namespace vixl; // NOLINT(build/namespaces) |
| |
| #ifdef __ |
| #error "ARM64 Codegen VIXL macro-assembler macro already defined." |
| #endif |
| |
| |
| namespace art { |
| |
| namespace arm64 { |
| |
| static bool IsFPType(Primitive::Type type) { |
| return type == Primitive::kPrimFloat || type == Primitive::kPrimDouble; |
| } |
| |
| // TODO: clean-up some of the constant definitions. |
| static constexpr size_t kHeapRefSize = sizeof(mirror::HeapReference<mirror::Object>); |
| static constexpr int kCurrentMethodStackOffset = 0; |
| |
| namespace { |
| // Convenience helpers to ease conversion to and from VIXL operands. |
| |
| int VIXLRegCodeFromART(int code) { |
| // TODO: static check? |
| DCHECK_EQ(SP, 31); |
| DCHECK_EQ(WSP, 31); |
| DCHECK_EQ(XZR, 32); |
| DCHECK_EQ(WZR, 32); |
| if (code == SP) { |
| return vixl::kSPRegInternalCode; |
| } |
| if (code == XZR) { |
| return vixl::kZeroRegCode; |
| } |
| return code; |
| } |
| |
| int ARTRegCodeFromVIXL(int code) { |
| // TODO: static check? |
| DCHECK_EQ(SP, 31); |
| DCHECK_EQ(WSP, 31); |
| DCHECK_EQ(XZR, 32); |
| DCHECK_EQ(WZR, 32); |
| if (code == vixl::kSPRegInternalCode) { |
| return SP; |
| } |
| if (code == vixl::kZeroRegCode) { |
| return XZR; |
| } |
| return code; |
| } |
| |
| Register XRegisterFrom(Location location) { |
| return Register::XRegFromCode(VIXLRegCodeFromART(location.reg())); |
| } |
| |
| Register WRegisterFrom(Location location) { |
| return Register::WRegFromCode(VIXLRegCodeFromART(location.reg())); |
| } |
| |
| Register RegisterFrom(Location location, Primitive::Type type) { |
| DCHECK(type != Primitive::kPrimVoid && !IsFPType(type)); |
| return type == Primitive::kPrimLong ? XRegisterFrom(location) : WRegisterFrom(location); |
| } |
| |
| Register OutputRegister(HInstruction* instr) { |
| return RegisterFrom(instr->GetLocations()->Out(), instr->GetType()); |
| } |
| |
| Register InputRegisterAt(HInstruction* instr, int input_index) { |
| return RegisterFrom(instr->GetLocations()->InAt(input_index), |
| instr->InputAt(input_index)->GetType()); |
| } |
| |
| int64_t Int64ConstantFrom(Location location) { |
| HConstant* instr = location.GetConstant(); |
| return instr->IsIntConstant() ? instr->AsIntConstant()->GetValue() |
| : instr->AsLongConstant()->GetValue(); |
| } |
| |
| Operand OperandFrom(Location location, Primitive::Type type) { |
| if (location.IsRegister()) { |
| return Operand(RegisterFrom(location, type)); |
| } else { |
| return Operand(Int64ConstantFrom(location)); |
| } |
| } |
| |
| Operand InputOperandAt(HInstruction* instr, int input_index) { |
| return OperandFrom(instr->GetLocations()->InAt(input_index), |
| instr->InputAt(input_index)->GetType()); |
| } |
| |
| MemOperand StackOperandFrom(Location location) { |
| return MemOperand(sp, location.GetStackIndex()); |
| } |
| |
| MemOperand HeapOperand(const Register& base, Offset offset) { |
| // A heap reference must be 32bit, so fit in a W register. |
| DCHECK(base.IsW()); |
| return MemOperand(base.X(), offset.SizeValue()); |
| } |
| |
| MemOperand HeapOperandFrom(Location location, Primitive::Type type, Offset offset) { |
| return HeapOperand(RegisterFrom(location, type), offset); |
| } |
| |
| Location LocationFrom(const Register& reg) { |
| return Location::RegisterLocation(ARTRegCodeFromVIXL(reg.code())); |
| } |
| |
| } // namespace |
| |
| inline Condition ARM64Condition(IfCondition cond) { |
| switch (cond) { |
| case kCondEQ: return eq; |
| case kCondNE: return ne; |
| case kCondLT: return lt; |
| case kCondLE: return le; |
| case kCondGT: return gt; |
| case kCondGE: return ge; |
| default: |
| LOG(FATAL) << "Unknown if condition"; |
| } |
| return nv; // Unreachable. |
| } |
| |
| static const Register kRuntimeParameterCoreRegisters[] = { x0, x1, x2, x3, x4, x5, x6, x7 }; |
| static constexpr size_t kRuntimeParameterCoreRegistersLength = |
| arraysize(kRuntimeParameterCoreRegisters); |
| static const FPRegister kRuntimeParameterFpuRegisters[] = { }; |
| static constexpr size_t kRuntimeParameterFpuRegistersLength = 0; |
| |
| class InvokeRuntimeCallingConvention : public CallingConvention<Register, FPRegister> { |
| public: |
| static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters); |
| |
| InvokeRuntimeCallingConvention() |
| : CallingConvention(kRuntimeParameterCoreRegisters, |
| kRuntimeParameterCoreRegistersLength, |
| kRuntimeParameterFpuRegisters, |
| kRuntimeParameterFpuRegistersLength) {} |
| |
| Location GetReturnLocation(Primitive::Type return_type); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(InvokeRuntimeCallingConvention); |
| }; |
| |
| Location InvokeRuntimeCallingConvention::GetReturnLocation(Primitive::Type return_type) { |
| DCHECK_NE(return_type, Primitive::kPrimVoid); |
| if (return_type == Primitive::kPrimFloat || return_type == Primitive::kPrimDouble) { |
| LOG(FATAL) << "Unimplemented return type " << return_type; |
| } |
| return LocationFrom(x0); |
| } |
| |
| #define __ reinterpret_cast<Arm64Assembler*>(codegen->GetAssembler())->vixl_masm_-> |
| |
| class SlowPathCodeARM64 : public SlowPathCode { |
| public: |
| SlowPathCodeARM64() : entry_label_(), exit_label_() {} |
| |
| vixl::Label* GetEntryLabel() { return &entry_label_; } |
| vixl::Label* GetExitLabel() { return &exit_label_; } |
| |
| private: |
| vixl::Label entry_label_; |
| vixl::Label exit_label_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SlowPathCodeARM64); |
| }; |
| |
| class BoundsCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit BoundsCheckSlowPathARM64(HBoundsCheck* instruction, |
| Location index_location, |
| Location length_location) |
| : instruction_(instruction), |
| index_location_(index_location), |
| length_location_(length_location) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| CodeGeneratorARM64* arm64_codegen = reinterpret_cast<CodeGeneratorARM64*>(codegen); |
| __ Bind(GetEntryLabel()); |
| InvokeRuntimeCallingConvention calling_convention; |
| arm64_codegen->MoveHelper(LocationFrom(calling_convention.GetRegisterAt(0)), |
| index_location_, Primitive::kPrimInt); |
| arm64_codegen->MoveHelper(LocationFrom(calling_convention.GetRegisterAt(1)), |
| length_location_, Primitive::kPrimInt); |
| size_t offset = QUICK_ENTRYPOINT_OFFSET(kArm64WordSize, pThrowArrayBounds).SizeValue(); |
| __ Ldr(lr, MemOperand(tr, offset)); |
| __ Blr(lr); |
| codegen->RecordPcInfo(instruction_, instruction_->GetDexPc()); |
| } |
| |
| private: |
| HBoundsCheck* const instruction_; |
| const Location index_location_; |
| const Location length_location_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BoundsCheckSlowPathARM64); |
| }; |
| |
| class NullCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit NullCheckSlowPathARM64(HNullCheck* instr) : instruction_(instr) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| int32_t offset = QUICK_ENTRYPOINT_OFFSET(kArm64WordSize, pThrowNullPointer).Int32Value(); |
| __ Ldr(lr, MemOperand(tr, offset)); |
| __ Blr(lr); |
| codegen->RecordPcInfo(instruction_, instruction_->GetDexPc()); |
| } |
| |
| private: |
| HNullCheck* const instruction_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NullCheckSlowPathARM64); |
| }; |
| |
| class SuspendCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit SuspendCheckSlowPathARM64(HSuspendCheck* instruction, |
| HBasicBlock* successor) |
| : instruction_(instruction), successor_(successor) {} |
| |
| virtual void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| size_t offset = QUICK_ENTRYPOINT_OFFSET(kArm64WordSize, pTestSuspend).SizeValue(); |
| __ Bind(GetEntryLabel()); |
| __ Ldr(lr, MemOperand(tr, offset)); |
| __ Blr(lr); |
| codegen->RecordPcInfo(instruction_, instruction_->GetDexPc()); |
| __ B(GetReturnLabel()); |
| } |
| |
| vixl::Label* GetReturnLabel() { |
| DCHECK(successor_ == nullptr); |
| return &return_label_; |
| } |
| |
| |
| private: |
| HSuspendCheck* const instruction_; |
| // If not null, the block to branch to after the suspend check. |
| HBasicBlock* const successor_; |
| |
| // If `successor_` is null, the label to branch to after the suspend check. |
| vixl::Label return_label_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SuspendCheckSlowPathARM64); |
| }; |
| |
| #undef __ |
| |
| Location InvokeDexCallingConventionVisitor::GetNextLocation(Primitive::Type type) { |
| Location next_location; |
| if (type == Primitive::kPrimVoid) { |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| |
| if (type == Primitive::kPrimFloat || type == Primitive::kPrimDouble) { |
| LOG(FATAL) << "Unimplemented type " << type; |
| } |
| |
| if (gp_index_ < calling_convention.GetNumberOfRegisters()) { |
| next_location = LocationFrom(calling_convention.GetRegisterAt(gp_index_)); |
| if (type == Primitive::kPrimLong) { |
| // Double stack slot reserved on the stack. |
| stack_index_++; |
| } |
| } else { // Stack. |
| if (type == Primitive::kPrimLong) { |
| next_location = Location::DoubleStackSlot(calling_convention.GetStackOffsetOf(stack_index_)); |
| // Double stack slot reserved on the stack. |
| stack_index_++; |
| } else { |
| next_location = Location::StackSlot(calling_convention.GetStackOffsetOf(stack_index_)); |
| } |
| } |
| // Move to the next register/stack slot. |
| gp_index_++; |
| stack_index_++; |
| return next_location; |
| } |
| |
| CodeGeneratorARM64::CodeGeneratorARM64(HGraph* graph) |
| : CodeGenerator(graph, |
| kNumberOfAllocatableRegisters, |
| kNumberOfAllocatableFloatingPointRegisters, |
| kNumberOfAllocatableRegisterPairs), |
| block_labels_(nullptr), |
| location_builder_(graph, this), |
| instruction_visitor_(graph, this) {} |
| |
| #define __ reinterpret_cast<Arm64Assembler*>(GetAssembler())->vixl_masm_-> |
| |
| void CodeGeneratorARM64::GenerateFrameEntry() { |
| // TODO: Add proper support for the stack overflow check. |
| UseScratchRegisterScope temps(assembler_.vixl_masm_); |
| Register temp = temps.AcquireX(); |
| __ Add(temp, sp, -static_cast<int32_t>(GetStackOverflowReservedBytes(kArm64))); |
| __ Ldr(temp, MemOperand(temp, 0)); |
| RecordPcInfo(nullptr, 0); |
| |
| CPURegList preserved_regs = GetFramePreservedRegisters(); |
| int frame_size = GetFrameSize(); |
| core_spill_mask_ |= preserved_regs.list(); |
| |
| __ Str(w0, MemOperand(sp, -frame_size, PreIndex)); |
| __ PokeCPURegList(preserved_regs, frame_size - preserved_regs.TotalSizeInBytes()); |
| |
| // Stack layout: |
| // sp[frame_size - 8] : lr. |
| // ... : other preserved registers. |
| // sp[frame_size - regs_size]: first preserved register. |
| // ... : reserved frame space. |
| // sp[0] : context pointer. |
| } |
| |
| void CodeGeneratorARM64::GenerateFrameExit() { |
| int frame_size = GetFrameSize(); |
| CPURegList preserved_regs = GetFramePreservedRegisters(); |
| __ PeekCPURegList(preserved_regs, frame_size - preserved_regs.TotalSizeInBytes()); |
| __ Drop(frame_size); |
| } |
| |
| void CodeGeneratorARM64::Bind(HBasicBlock* block) { |
| __ Bind(GetLabelOf(block)); |
| } |
| |
| void CodeGeneratorARM64::MoveHelper(Location destination, |
| Location source, |
| Primitive::Type type) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| if (destination.IsRegister()) { |
| Register dst = RegisterFrom(destination, type); |
| if (source.IsRegister()) { |
| Register src = RegisterFrom(source, type); |
| DCHECK(dst.IsSameSizeAndType(src)); |
| __ Mov(dst, src); |
| } else { |
| DCHECK(dst.Is64Bits() || !source.IsDoubleStackSlot()); |
| __ Ldr(dst, StackOperandFrom(source)); |
| } |
| } else { |
| DCHECK(destination.IsStackSlot() || destination.IsDoubleStackSlot()); |
| if (source.IsRegister()) { |
| __ Str(RegisterFrom(source, type), StackOperandFrom(destination)); |
| } else { |
| UseScratchRegisterScope temps(assembler_.vixl_masm_); |
| Register temp = destination.IsDoubleStackSlot() ? temps.AcquireX() : temps.AcquireW(); |
| __ Ldr(temp, StackOperandFrom(source)); |
| __ Str(temp, StackOperandFrom(destination)); |
| } |
| } |
| } |
| |
| void CodeGeneratorARM64::Move(HInstruction* instruction, |
| Location location, |
| HInstruction* move_for) { |
| LocationSummary* locations = instruction->GetLocations(); |
| if (locations != nullptr && locations->Out().Equals(location)) { |
| return; |
| } |
| |
| Primitive::Type type = instruction->GetType(); |
| |
| if (instruction->IsIntConstant() || instruction->IsLongConstant()) { |
| int64_t value = instruction->IsIntConstant() ? instruction->AsIntConstant()->GetValue() |
| : instruction->AsLongConstant()->GetValue(); |
| if (location.IsRegister()) { |
| Register dst = RegisterFrom(location, type); |
| DCHECK((instruction->IsIntConstant() && dst.Is32Bits()) || |
| (instruction->IsLongConstant() && dst.Is64Bits())); |
| __ Mov(dst, value); |
| } else { |
| DCHECK(location.IsStackSlot() || location.IsDoubleStackSlot()); |
| UseScratchRegisterScope temps(assembler_.vixl_masm_); |
| Register temp = instruction->IsIntConstant() ? temps.AcquireW() : temps.AcquireX(); |
| __ Mov(temp, value); |
| __ Str(temp, StackOperandFrom(location)); |
| } |
| |
| } else if (instruction->IsLoadLocal()) { |
| uint32_t stack_slot = GetStackSlot(instruction->AsLoadLocal()->GetLocal()); |
| switch (type) { |
| case Primitive::kPrimNot: |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| MoveHelper(location, Location::StackSlot(stack_slot), type); |
| break; |
| case Primitive::kPrimLong: |
| MoveHelper(location, Location::DoubleStackSlot(stack_slot), type); |
| break; |
| default: |
| LOG(FATAL) << "Unimplemented type" << type; |
| } |
| |
| } else { |
| DCHECK((instruction->GetNext() == move_for) || instruction->GetNext()->IsTemporary()); |
| MoveHelper(location, locations->Out(), type); |
| } |
| } |
| |
| size_t CodeGeneratorARM64::FrameEntrySpillSize() const { |
| return GetFramePreservedRegistersSize(); |
| } |
| |
| Location CodeGeneratorARM64::GetStackLocation(HLoadLocal* load) const { |
| Primitive::Type type = load->GetType(); |
| switch (type) { |
| case Primitive::kPrimNot: |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| return Location::StackSlot(GetStackSlot(load->GetLocal())); |
| case Primitive::kPrimLong: |
| return Location::DoubleStackSlot(GetStackSlot(load->GetLocal())); |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented type " << type; |
| break; |
| case Primitive::kPrimVoid: |
| default: |
| LOG(FATAL) << "Unexpected type " << type; |
| } |
| LOG(FATAL) << "Unreachable"; |
| return Location::NoLocation(); |
| } |
| |
| void CodeGeneratorARM64::MarkGCCard(Register object, Register value) { |
| UseScratchRegisterScope temps(assembler_.vixl_masm_); |
| Register card = temps.AcquireX(); |
| Register temp = temps.AcquireX(); |
| vixl::Label done; |
| __ Cbz(value, &done); |
| __ Ldr(card, MemOperand(tr, Thread::CardTableOffset<kArm64WordSize>().Int32Value())); |
| __ Lsr(temp, object, gc::accounting::CardTable::kCardShift); |
| __ Strb(card, MemOperand(card, temp)); |
| __ Bind(&done); |
| } |
| |
| void CodeGeneratorARM64::SetupBlockedRegisters() const { |
| // Block reserved registers: |
| // ip0 (VIXL temporary) |
| // ip1 (VIXL temporary) |
| // xSuspend (Suspend counter) |
| // lr |
| // sp is not part of the allocatable registers, so we don't need to block it. |
| CPURegList reserved_core_registers = vixl_reserved_core_registers; |
| reserved_core_registers.Combine(runtime_reserved_core_registers); |
| // TODO: See if we should instead allow allocating but preserve those if used. |
| reserved_core_registers.Combine(quick_callee_saved_registers); |
| while (!reserved_core_registers.IsEmpty()) { |
| blocked_core_registers_[reserved_core_registers.PopLowestIndex().code()] = true; |
| } |
| } |
| |
| Location CodeGeneratorARM64::AllocateFreeRegister(Primitive::Type type) const { |
| if (type == Primitive::kPrimVoid) { |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| |
| if (type == Primitive::kPrimFloat || type == Primitive::kPrimDouble) { |
| LOG(FATAL) << "Unimplemented support for floating-point"; |
| } |
| |
| ssize_t reg = FindFreeEntry(blocked_core_registers_, kNumberOfXRegisters); |
| DCHECK_NE(reg, -1); |
| blocked_core_registers_[reg] = true; |
| |
| if (IsFPType(type)) { |
| return Location::FpuRegisterLocation(reg); |
| } else { |
| return Location::RegisterLocation(reg); |
| } |
| } |
| |
| void CodeGeneratorARM64::DumpCoreRegister(std::ostream& stream, int reg) const { |
| stream << Arm64ManagedRegister::FromXRegister(XRegister(reg)); |
| } |
| |
| void CodeGeneratorARM64::DumpFloatingPointRegister(std::ostream& stream, int reg) const { |
| stream << Arm64ManagedRegister::FromDRegister(DRegister(reg)); |
| } |
| |
| #undef __ |
| #define __ assembler_->vixl_masm_-> |
| |
| InstructionCodeGeneratorARM64::InstructionCodeGeneratorARM64(HGraph* graph, |
| CodeGeneratorARM64* codegen) |
| : HGraphVisitor(graph), |
| assembler_(codegen->GetAssembler()), |
| codegen_(codegen) {} |
| |
| #define FOR_EACH_UNIMPLEMENTED_INSTRUCTION(M) \ |
| M(ArrayGet) \ |
| M(ArraySet) \ |
| M(ClinitCheck) \ |
| M(DoubleConstant) \ |
| M(Div) \ |
| M(FloatConstant) \ |
| M(LoadClass) \ |
| M(LoadString) \ |
| M(Neg) \ |
| M(NewArray) \ |
| M(ParallelMove) \ |
| M(StaticFieldGet) \ |
| M(StaticFieldSet) \ |
| |
| #define UNIMPLEMENTED_INSTRUCTION_BREAK_CODE(name) name##UnimplementedInstructionBreakCode |
| |
| enum UnimplementedInstructionBreakCode { |
| #define ENUM_UNIMPLEMENTED_INSTRUCTION(name) UNIMPLEMENTED_INSTRUCTION_BREAK_CODE(name), |
| FOR_EACH_UNIMPLEMENTED_INSTRUCTION(ENUM_UNIMPLEMENTED_INSTRUCTION) |
| #undef ENUM_UNIMPLEMENTED_INSTRUCTION |
| }; |
| |
| #define DEFINE_UNIMPLEMENTED_INSTRUCTION_VISITORS(name) \ |
| void InstructionCodeGeneratorARM64::Visit##name(H##name* instr) { \ |
| __ Brk(UNIMPLEMENTED_INSTRUCTION_BREAK_CODE(name)); \ |
| } \ |
| void LocationsBuilderARM64::Visit##name(H##name* instr) { \ |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instr); \ |
| locations->SetOut(Location::Any()); \ |
| } |
| FOR_EACH_UNIMPLEMENTED_INSTRUCTION(DEFINE_UNIMPLEMENTED_INSTRUCTION_VISITORS) |
| #undef DEFINE_UNIMPLEMENTED_INSTRUCTION_VISITORS |
| |
| #undef UNIMPLEMENTED_INSTRUCTION_BREAK_CODE |
| |
| void LocationsBuilderARM64::HandleAddSub(HBinaryOperation* instr) { |
| DCHECK(instr->IsAdd() || instr->IsSub()); |
| DCHECK_EQ(instr->InputCount(), 2U); |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instr); |
| Primitive::Type type = instr->GetResultType(); |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instr->InputAt(1))); |
| locations->SetOut(Location::RequiresRegister()); |
| break; |
| } |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected " << instr->DebugName() << " type " << type; |
| break; |
| default: |
| LOG(FATAL) << "Unimplemented " << instr->DebugName() << " type " << type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleAddSub(HBinaryOperation* instr) { |
| DCHECK(instr->IsAdd() || instr->IsSub()); |
| |
| Primitive::Type type = instr->GetType(); |
| Register dst = OutputRegister(instr); |
| Register lhs = InputRegisterAt(instr, 0); |
| Operand rhs = InputOperandAt(instr, 1); |
| |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| if (instr->IsAdd()) { |
| __ Add(dst, lhs, rhs); |
| } else { |
| __ Sub(dst, lhs, rhs); |
| } |
| break; |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| LOG(FATAL) << "Unexpected add/sub type " << type; |
| break; |
| default: |
| LOG(FATAL) << "Unimplemented add/sub type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitAdd(HAdd* instruction) { |
| HandleAddSub(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitAdd(HAdd* instruction) { |
| HandleAddSub(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitArrayLength(HArrayLength* instruction) { |
| __ Ldr(OutputRegister(instruction), |
| HeapOperand(InputRegisterAt(instruction, 0), mirror::Array::LengthOffset())); |
| } |
| |
| void LocationsBuilderARM64::VisitCompare(HCompare* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCompare(HCompare* instruction) { |
| Primitive::Type in_type = instruction->InputAt(0)->GetType(); |
| |
| DCHECK_EQ(in_type, Primitive::kPrimLong); |
| switch (in_type) { |
| case Primitive::kPrimLong: { |
| vixl::Label done; |
| Register result = OutputRegister(instruction); |
| Register left = InputRegisterAt(instruction, 0); |
| Operand right = InputOperandAt(instruction, 1); |
| __ Subs(result, left, right); |
| __ B(eq, &done); |
| __ Mov(result, 1); |
| __ Cneg(result, result, le); |
| __ Bind(&done); |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unimplemented compare type " << in_type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitCondition(HCondition* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| if (instruction->NeedsMaterialization()) { |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCondition(HCondition* instruction) { |
| if (!instruction->NeedsMaterialization()) { |
| return; |
| } |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Register lhs = InputRegisterAt(instruction, 0); |
| Operand rhs = InputOperandAt(instruction, 1); |
| Register res = RegisterFrom(locations->Out(), instruction->GetType()); |
| Condition cond = ARM64Condition(instruction->GetCondition()); |
| |
| __ Cmp(lhs, rhs); |
| __ Csel(res, vixl::Assembler::AppropriateZeroRegFor(res), Operand(1), InvertCondition(cond)); |
| } |
| |
| #define FOR_EACH_CONDITION_INSTRUCTION(M) \ |
| M(Equal) \ |
| M(NotEqual) \ |
| M(LessThan) \ |
| M(LessThanOrEqual) \ |
| M(GreaterThan) \ |
| M(GreaterThanOrEqual) |
| #define DEFINE_CONDITION_VISITORS(Name) \ |
| void LocationsBuilderARM64::Visit##Name(H##Name* comp) { VisitCondition(comp); } \ |
| void InstructionCodeGeneratorARM64::Visit##Name(H##Name* comp) { VisitCondition(comp); } |
| FOR_EACH_CONDITION_INSTRUCTION(DEFINE_CONDITION_VISITORS) |
| #undef FOR_EACH_CONDITION_INSTRUCTION |
| |
| void LocationsBuilderARM64::VisitExit(HExit* exit) { |
| exit->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitExit(HExit* exit) { |
| if (kIsDebugBuild) { |
| down_cast<Arm64Assembler*>(GetAssembler())->Comment("Unreachable"); |
| __ Brk(0); // TODO: Introduce special markers for such code locations. |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitGoto(HGoto* got) { |
| got->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitGoto(HGoto* got) { |
| HBasicBlock* successor = got->GetSuccessor(); |
| // TODO: Support for suspend checks emission. |
| if (!codegen_->GoesToNextBlock(got->GetBlock(), successor)) { |
| __ B(codegen_->GetLabelOf(successor)); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitIf(HIf* if_instr) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr); |
| HInstruction* cond = if_instr->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| if (cond->AsCondition()->NeedsMaterialization()) { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitIf(HIf* if_instr) { |
| HInstruction* cond = if_instr->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| HCondition* condition = cond->AsCondition(); |
| vixl::Label* true_target = codegen_->GetLabelOf(if_instr->IfTrueSuccessor()); |
| vixl::Label* false_target = codegen_->GetLabelOf(if_instr->IfFalseSuccessor()); |
| |
| // TODO: Support constant condition input in VisitIf. |
| |
| if (condition->NeedsMaterialization()) { |
| // The condition instruction has been materialized, compare the output to 0. |
| Location cond_val = if_instr->GetLocations()->InAt(0); |
| DCHECK(cond_val.IsRegister()); |
| __ Cbnz(InputRegisterAt(if_instr, 0), true_target); |
| |
| } else { |
| // The condition instruction has not been materialized, use its inputs as |
| // the comparison and its condition as the branch condition. |
| Register lhs = InputRegisterAt(condition, 0); |
| Operand rhs = InputOperandAt(condition, 1); |
| Condition cond = ARM64Condition(condition->GetCondition()); |
| if ((cond == eq || cond == ne) && rhs.IsImmediate() && (rhs.immediate() == 0)) { |
| if (cond == eq) { |
| __ Cbz(lhs, true_target); |
| } else { |
| __ Cbnz(lhs, true_target); |
| } |
| } else { |
| __ Cmp(lhs, rhs); |
| __ B(cond, true_target); |
| } |
| } |
| |
| if (!codegen_->GoesToNextBlock(if_instr->GetBlock(), if_instr->IfFalseSuccessor())) { |
| __ B(false_target); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| Primitive::Type res_type = instruction->GetType(); |
| Register res = OutputRegister(instruction); |
| Register obj = InputRegisterAt(instruction, 0); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| |
| switch (res_type) { |
| case Primitive::kPrimBoolean: { |
| __ Ldrb(res, MemOperand(obj, offset)); |
| break; |
| } |
| case Primitive::kPrimByte: { |
| __ Ldrsb(res, MemOperand(obj, offset)); |
| break; |
| } |
| case Primitive::kPrimShort: { |
| __ Ldrsh(res, MemOperand(obj, offset)); |
| break; |
| } |
| case Primitive::kPrimChar: { |
| __ Ldrh(res, MemOperand(obj, offset)); |
| break; |
| } |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: { // TODO: support volatile. |
| DCHECK(res.IsX() == (res_type == Primitive::kPrimLong)); |
| __ Ldr(res, MemOperand(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register res_type " << res_type; |
| break; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable res_type " << res_type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| Register obj = InputRegisterAt(instruction, 0); |
| Register value = InputRegisterAt(instruction, 1); |
| Primitive::Type field_type = instruction->InputAt(1)->GetType(); |
| uint32_t offset = instruction->GetFieldOffset().Uint32Value(); |
| |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: { |
| __ Strb(value, MemOperand(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimShort: |
| case Primitive::kPrimChar: { |
| __ Strh(value, MemOperand(obj, offset)); |
| break; |
| } |
| |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: { |
| DCHECK(value.IsX() == (field_type == Primitive::kPrimLong)); |
| __ Str(value, MemOperand(obj, offset)); |
| |
| if (field_type == Primitive::kPrimNot) { |
| codegen_->MarkGCCard(obj, value); |
| } |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented register type " << field_type; |
| break; |
| |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << field_type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitIntConstant(HIntConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitIntConstant(HIntConstant* constant) { |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeStatic(HInvokeStatic* invoke) { |
| HandleInvoke(invoke); |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeVirtual(HInvokeVirtual* invoke) { |
| HandleInvoke(invoke); |
| } |
| |
| void LocationsBuilderARM64::HandleInvoke(HInvoke* invoke) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(invoke, LocationSummary::kCall); |
| locations->AddTemp(LocationFrom(x0)); |
| |
| InvokeDexCallingConventionVisitor calling_convention_visitor; |
| for (size_t i = 0; i < invoke->InputCount(); i++) { |
| HInstruction* input = invoke->InputAt(i); |
| locations->SetInAt(i, calling_convention_visitor.GetNextLocation(input->GetType())); |
| } |
| |
| Primitive::Type return_type = invoke->GetType(); |
| if (return_type != Primitive::kPrimVoid) { |
| locations->SetOut(calling_convention_visitor.GetReturnLocation(return_type)); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeStatic(HInvokeStatic* invoke) { |
| Register temp = WRegisterFrom(invoke->GetLocations()->GetTemp(0)); |
| // Make sure that ArtMethod* is passed in W0 as per the calling convention |
| DCHECK(temp.Is(w0)); |
| size_t index_in_cache = mirror::Array::DataOffset(kHeapRefSize).SizeValue() + |
| invoke->GetIndexInDexCache() * kHeapRefSize; |
| |
| // TODO: Implement all kinds of calls: |
| // 1) boot -> boot |
| // 2) app -> boot |
| // 3) app -> app |
| // |
| // Currently we implement the app -> app logic, which looks up in the resolve cache. |
| |
| // temp = method; |
| __ Ldr(temp, MemOperand(sp, kCurrentMethodStackOffset)); |
| // temp = temp->dex_cache_resolved_methods_; |
| __ Ldr(temp, MemOperand(temp.X(), mirror::ArtMethod::DexCacheResolvedMethodsOffset().SizeValue())); |
| // temp = temp[index_in_cache]; |
| __ Ldr(temp, MemOperand(temp.X(), index_in_cache)); |
| // lr = temp->entry_point_from_quick_compiled_code_; |
| __ Ldr(lr, MemOperand(temp.X(), mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset().SizeValue())); |
| // lr(); |
| __ Blr(lr); |
| |
| codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeVirtual(HInvokeVirtual* invoke) { |
| LocationSummary* locations = invoke->GetLocations(); |
| Location receiver = locations->InAt(0); |
| Register temp = XRegisterFrom(invoke->GetLocations()->GetTemp(0)); |
| size_t method_offset = mirror::Class::EmbeddedVTableOffset().SizeValue() + |
| invoke->GetVTableIndex() * sizeof(mirror::Class::VTableEntry); |
| Offset class_offset = mirror::Object::ClassOffset(); |
| Offset entry_point = mirror::ArtMethod::EntryPointFromQuickCompiledCodeOffset(); |
| |
| // temp = object->GetClass(); |
| if (receiver.IsStackSlot()) { |
| __ Ldr(temp.W(), MemOperand(sp, receiver.GetStackIndex())); |
| __ Ldr(temp.W(), MemOperand(temp, class_offset.SizeValue())); |
| } else { |
| DCHECK(receiver.IsRegister()); |
| __ Ldr(temp.W(), HeapOperandFrom(receiver, Primitive::kPrimNot, |
| class_offset)); |
| } |
| // temp = temp->GetMethodAt(method_offset); |
| __ Ldr(temp.W(), MemOperand(temp, method_offset)); |
| // lr = temp->GetEntryPoint(); |
| __ Ldr(lr, MemOperand(temp, entry_point.SizeValue())); |
| // lr(); |
| __ Blr(lr); |
| DCHECK(!codegen_->IsLeafMethod()); |
| codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| } |
| |
| void LocationsBuilderARM64::VisitLoadLocal(HLoadLocal* load) { |
| load->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLoadLocal(HLoadLocal* load) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| void LocationsBuilderARM64::VisitLocal(HLocal* local) { |
| local->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLocal(HLocal* local) { |
| DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock()); |
| } |
| |
| void LocationsBuilderARM64::VisitLongConstant(HLongConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLongConstant(HLongConstant* constant) { |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderARM64::VisitMul(HMul* mul) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(mul, LocationSummary::kNoCall); |
| switch (mul->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented mul type " << mul->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected mul type " << mul->GetResultType(); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitMul(HMul* mul) { |
| switch (mul->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| __ Mul(OutputRegister(mul), InputRegisterAt(mul, 0), InputRegisterAt(mul, 1)); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| LOG(FATAL) << "Unimplemented mul type " << mul->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected mul type " << mul->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitNewInstance(HNewInstance* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->AddTemp(LocationFrom(calling_convention.GetRegisterAt(0))); |
| locations->AddTemp(LocationFrom(calling_convention.GetRegisterAt(1))); |
| locations->SetOut(calling_convention.GetReturnLocation(Primitive::kPrimNot)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNewInstance(HNewInstance* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register type_index = RegisterFrom(locations->GetTemp(0), Primitive::kPrimInt); |
| DCHECK(type_index.Is(w0)); |
| Register current_method = RegisterFrom(locations->GetTemp(1), Primitive::kPrimNot); |
| DCHECK(current_method.Is(w1)); |
| __ Ldr(current_method, MemOperand(sp, kCurrentMethodStackOffset)); |
| __ Mov(type_index, instruction->GetTypeIndex()); |
| __ Ldr(lr, MemOperand(tr, QUICK_ENTRYPOINT_OFFSET(kArm64WordSize, pAllocObjectWithAccessCheck).Int32Value())); |
| __ Blr(lr); |
| codegen_->RecordPcInfo(instruction, instruction->GetDexPc()); |
| DCHECK(!codegen_->IsLeafMethod()); |
| } |
| |
| void LocationsBuilderARM64::VisitNot(HNot* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNot(HNot* instruction) { |
| switch (instruction->InputAt(0)->GetType()) { |
| case Primitive::kPrimBoolean: |
| __ Eor(OutputRegister(instruction), InputRegisterAt(instruction, 0), Operand(1)); |
| break; |
| |
| case Primitive::kPrimInt: |
| __ Mvn(OutputRegister(instruction), InputOperandAt(instruction, 0)); |
| break; |
| |
| case Primitive::kPrimLong: |
| LOG(FATAL) << "Not yet implemented type for not operation " << instruction->GetResultType(); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected type for not operation " << instruction->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitNullCheck(HNullCheck* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if (instruction->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNullCheck(HNullCheck* instruction) { |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) NullCheckSlowPathARM64(instruction); |
| codegen_->AddSlowPath(slow_path); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location obj = locations->InAt(0); |
| if (obj.IsRegister()) { |
| __ Cbz(RegisterFrom(obj, instruction->InputAt(0)->GetType()), slow_path->GetEntryLabel()); |
| } else { |
| DCHECK(obj.IsConstant()) << obj; |
| DCHECK_EQ(obj.GetConstant()->AsIntConstant()->GetValue(), 0); |
| __ B(slow_path->GetEntryLabel()); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitParameterValue(HParameterValue* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| Location location = parameter_visitor_.GetNextLocation(instruction->GetType()); |
| if (location.IsStackSlot()) { |
| location = Location::StackSlot(location.GetStackIndex() + codegen_->GetFrameSize()); |
| } else if (location.IsDoubleStackSlot()) { |
| location = Location::DoubleStackSlot(location.GetStackIndex() + codegen_->GetFrameSize()); |
| } |
| locations->SetOut(location); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitParameterValue(HParameterValue* instruction) { |
| // Nothing to do, the parameter is already at its location. |
| } |
| |
| void LocationsBuilderARM64::VisitPhi(HPhi* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| for (size_t i = 0, e = instruction->InputCount(); i < e; ++i) { |
| locations->SetInAt(i, Location::Any()); |
| } |
| locations->SetOut(Location::Any()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitPhi(HPhi* instruction) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void LocationsBuilderARM64::VisitReturn(HReturn* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| Primitive::Type return_type = instruction->InputAt(0)->GetType(); |
| |
| if (return_type == Primitive::kPrimFloat || return_type == Primitive::kPrimDouble) { |
| LOG(FATAL) << "Unimplemented return type " << return_type; |
| } |
| |
| locations->SetInAt(0, LocationFrom(x0)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitReturn(HReturn* instruction) { |
| if (kIsDebugBuild) { |
| Primitive::Type type = instruction->InputAt(0)->GetType(); |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| DCHECK(InputRegisterAt(instruction, 0).Is(w0)); |
| break; |
| |
| case Primitive::kPrimLong: |
| DCHECK(InputRegisterAt(instruction, 0).Is(x0)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented return type " << type; |
| } |
| } |
| codegen_->GenerateFrameExit(); |
| __ Br(lr); |
| } |
| |
| void LocationsBuilderARM64::VisitReturnVoid(HReturnVoid* instruction) { |
| instruction->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitReturnVoid(HReturnVoid* instruction) { |
| codegen_->GenerateFrameExit(); |
| __ Br(lr); |
| } |
| |
| void LocationsBuilderARM64::VisitStoreLocal(HStoreLocal* store) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(store); |
| Primitive::Type field_type = store->InputAt(1)->GetType(); |
| switch (field_type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| case Primitive::kPrimLong: |
| locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented local type " << field_type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitStoreLocal(HStoreLocal* store) { |
| } |
| |
| void LocationsBuilderARM64::VisitSub(HSub* instruction) { |
| HandleAddSub(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitSub(HSub* instruction) { |
| HandleAddSub(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| if (instruction->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| BoundsCheckSlowPathARM64* slow_path = new (GetGraph()->GetArena()) BoundsCheckSlowPathARM64( |
| instruction, locations->InAt(0), locations->InAt(1)); |
| codegen_->AddSlowPath(slow_path); |
| |
| __ Cmp(InputRegisterAt(instruction, 0), InputOperandAt(instruction, 1)); |
| __ B(slow_path->GetEntryLabel(), hs); |
| } |
| |
| void LocationsBuilderARM64::VisitSuspendCheck(HSuspendCheck* instruction) { |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCallOnSlowPath); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitSuspendCheck(HSuspendCheck* instruction) { |
| // TODO: Improve support for suspend checks. |
| SuspendCheckSlowPathARM64* slow_path = |
| new (GetGraph()->GetArena()) SuspendCheckSlowPathARM64(instruction, nullptr); |
| codegen_->AddSlowPath(slow_path); |
| |
| __ Subs(wSuspend, wSuspend, 1); |
| __ B(slow_path->GetEntryLabel(), le); |
| __ Bind(slow_path->GetReturnLabel()); |
| } |
| |
| void LocationsBuilderARM64::VisitTemporary(HTemporary* temp) { |
| temp->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitTemporary(HTemporary* temp) { |
| // Nothing to do, this is driven by the code generator. |
| } |
| |
| } // namespace arm64 |
| } // namespace art |