| /* |
| * 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 "arch/arm64/instruction_set_features_arm64.h" |
| #include "art_method.h" |
| #include "code_generator_utils.h" |
| #include "compiled_method.h" |
| #include "entrypoints/quick/quick_entrypoints.h" |
| #include "entrypoints/quick/quick_entrypoints_enum.h" |
| #include "gc/accounting/card_table.h" |
| #include "intrinsics.h" |
| #include "intrinsics_arm64.h" |
| #include "mirror/array-inl.h" |
| #include "mirror/class-inl.h" |
| #include "offsets.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 { |
| |
| using helpers::CPURegisterFrom; |
| using helpers::DRegisterFrom; |
| using helpers::FPRegisterFrom; |
| using helpers::HeapOperand; |
| using helpers::HeapOperandFrom; |
| using helpers::InputCPURegisterAt; |
| using helpers::InputFPRegisterAt; |
| using helpers::InputRegisterAt; |
| using helpers::InputOperandAt; |
| using helpers::Int64ConstantFrom; |
| using helpers::LocationFrom; |
| using helpers::OperandFromMemOperand; |
| using helpers::OutputCPURegister; |
| using helpers::OutputFPRegister; |
| using helpers::OutputRegister; |
| using helpers::RegisterFrom; |
| using helpers::StackOperandFrom; |
| using helpers::VIXLRegCodeFromART; |
| using helpers::WRegisterFrom; |
| using helpers::XRegisterFrom; |
| using helpers::ARM64EncodableConstantOrRegister; |
| using helpers::ArtVixlRegCodeCoherentForRegSet; |
| |
| static constexpr int kCurrentMethodStackOffset = 0; |
| |
| 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; |
| } |
| LOG(FATAL) << "Unreachable"; |
| UNREACHABLE(); |
| } |
| |
| Location ARM64ReturnLocation(Primitive::Type return_type) { |
| // Note that in practice, `LocationFrom(x0)` and `LocationFrom(w0)` create the |
| // same Location object, and so do `LocationFrom(d0)` and `LocationFrom(s0)`, |
| // but we use the exact registers for clarity. |
| if (return_type == Primitive::kPrimFloat) { |
| return LocationFrom(s0); |
| } else if (return_type == Primitive::kPrimDouble) { |
| return LocationFrom(d0); |
| } else if (return_type == Primitive::kPrimLong) { |
| return LocationFrom(x0); |
| } else if (return_type == Primitive::kPrimVoid) { |
| return Location::NoLocation(); |
| } else { |
| return LocationFrom(w0); |
| } |
| } |
| |
| Location InvokeRuntimeCallingConvention::GetReturnLocation(Primitive::Type return_type) { |
| return ARM64ReturnLocation(return_type); |
| } |
| |
| #define __ down_cast<CodeGeneratorARM64*>(codegen)->GetVIXLAssembler()-> |
| #define QUICK_ENTRY_POINT(x) QUICK_ENTRYPOINT_OFFSET(kArm64WordSize, x).Int32Value() |
| |
| // Calculate memory accessing operand for save/restore live registers. |
| static void SaveRestoreLiveRegistersHelper(CodeGenerator* codegen, |
| RegisterSet* register_set, |
| int64_t spill_offset, |
| bool is_save) { |
| DCHECK(ArtVixlRegCodeCoherentForRegSet(register_set->GetCoreRegisters(), |
| codegen->GetNumberOfCoreRegisters(), |
| register_set->GetFloatingPointRegisters(), |
| codegen->GetNumberOfFloatingPointRegisters())); |
| |
| CPURegList core_list = CPURegList(CPURegister::kRegister, kXRegSize, |
| register_set->GetCoreRegisters() & (~callee_saved_core_registers.list())); |
| CPURegList fp_list = CPURegList(CPURegister::kFPRegister, kDRegSize, |
| register_set->GetFloatingPointRegisters() & (~callee_saved_fp_registers.list())); |
| |
| MacroAssembler* masm = down_cast<CodeGeneratorARM64*>(codegen)->GetVIXLAssembler(); |
| UseScratchRegisterScope temps(masm); |
| |
| Register base = masm->StackPointer(); |
| int64_t core_spill_size = core_list.TotalSizeInBytes(); |
| int64_t fp_spill_size = fp_list.TotalSizeInBytes(); |
| int64_t reg_size = kXRegSizeInBytes; |
| int64_t max_ls_pair_offset = spill_offset + core_spill_size + fp_spill_size - 2 * reg_size; |
| uint32_t ls_access_size = WhichPowerOf2(reg_size); |
| if (((core_list.Count() > 1) || (fp_list.Count() > 1)) && |
| !masm->IsImmLSPair(max_ls_pair_offset, ls_access_size)) { |
| // If the offset does not fit in the instruction's immediate field, use an alternate register |
| // to compute the base address(float point registers spill base address). |
| Register new_base = temps.AcquireSameSizeAs(base); |
| __ Add(new_base, base, Operand(spill_offset + core_spill_size)); |
| base = new_base; |
| spill_offset = -core_spill_size; |
| int64_t new_max_ls_pair_offset = fp_spill_size - 2 * reg_size; |
| DCHECK(masm->IsImmLSPair(spill_offset, ls_access_size)); |
| DCHECK(masm->IsImmLSPair(new_max_ls_pair_offset, ls_access_size)); |
| } |
| |
| if (is_save) { |
| __ StoreCPURegList(core_list, MemOperand(base, spill_offset)); |
| __ StoreCPURegList(fp_list, MemOperand(base, spill_offset + core_spill_size)); |
| } else { |
| __ LoadCPURegList(core_list, MemOperand(base, spill_offset)); |
| __ LoadCPURegList(fp_list, MemOperand(base, spill_offset + core_spill_size)); |
| } |
| } |
| |
| void SlowPathCodeARM64::SaveLiveRegisters(CodeGenerator* codegen, LocationSummary* locations) { |
| RegisterSet* register_set = locations->GetLiveRegisters(); |
| size_t stack_offset = codegen->GetFirstRegisterSlotInSlowPath(); |
| for (size_t i = 0, e = codegen->GetNumberOfCoreRegisters(); i < e; ++i) { |
| if (!codegen->IsCoreCalleeSaveRegister(i) && register_set->ContainsCoreRegister(i)) { |
| // If the register holds an object, update the stack mask. |
| if (locations->RegisterContainsObject(i)) { |
| locations->SetStackBit(stack_offset / kVRegSize); |
| } |
| DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| saved_core_stack_offsets_[i] = stack_offset; |
| stack_offset += kXRegSizeInBytes; |
| } |
| } |
| |
| for (size_t i = 0, e = codegen->GetNumberOfFloatingPointRegisters(); i < e; ++i) { |
| if (!codegen->IsFloatingPointCalleeSaveRegister(i) && |
| register_set->ContainsFloatingPointRegister(i)) { |
| DCHECK_LT(stack_offset, codegen->GetFrameSize() - codegen->FrameEntrySpillSize()); |
| DCHECK_LT(i, kMaximumNumberOfExpectedRegisters); |
| saved_fpu_stack_offsets_[i] = stack_offset; |
| stack_offset += kDRegSizeInBytes; |
| } |
| } |
| |
| SaveRestoreLiveRegistersHelper(codegen, register_set, |
| codegen->GetFirstRegisterSlotInSlowPath(), true /* is_save */); |
| } |
| |
| void SlowPathCodeARM64::RestoreLiveRegisters(CodeGenerator* codegen, LocationSummary* locations) { |
| RegisterSet* register_set = locations->GetLiveRegisters(); |
| SaveRestoreLiveRegistersHelper(codegen, register_set, |
| codegen->GetFirstRegisterSlotInSlowPath(), false /* is_save */); |
| } |
| |
| class BoundsCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit BoundsCheckSlowPathARM64(HBoundsCheck* instruction) : instruction_(instruction) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| LocationSummary* locations = instruction_->GetLocations(); |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| |
| __ Bind(GetEntryLabel()); |
| if (instruction_->CanThrowIntoCatchBlock()) { |
| // Live registers will be restored in the catch block if caught. |
| SaveLiveRegisters(codegen, instruction_->GetLocations()); |
| } |
| // We're moving two locations to locations that could overlap, so we need a parallel |
| // move resolver. |
| InvokeRuntimeCallingConvention calling_convention; |
| codegen->EmitParallelMoves( |
| locations->InAt(0), LocationFrom(calling_convention.GetRegisterAt(0)), Primitive::kPrimInt, |
| locations->InAt(1), LocationFrom(calling_convention.GetRegisterAt(1)), Primitive::kPrimInt); |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pThrowArrayBounds), instruction_, instruction_->GetDexPc(), this); |
| CheckEntrypointTypes<kQuickThrowArrayBounds, void, int32_t, int32_t>(); |
| } |
| |
| bool IsFatal() const OVERRIDE { return true; } |
| |
| const char* GetDescription() const OVERRIDE { return "BoundsCheckSlowPathARM64"; } |
| |
| private: |
| HBoundsCheck* const instruction_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BoundsCheckSlowPathARM64); |
| }; |
| |
| class DivZeroCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit DivZeroCheckSlowPathARM64(HDivZeroCheck* instruction) : instruction_(instruction) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| __ Bind(GetEntryLabel()); |
| if (instruction_->CanThrowIntoCatchBlock()) { |
| // Live registers will be restored in the catch block if caught. |
| SaveLiveRegisters(codegen, instruction_->GetLocations()); |
| } |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pThrowDivZero), instruction_, instruction_->GetDexPc(), this); |
| CheckEntrypointTypes<kQuickThrowDivZero, void, void>(); |
| } |
| |
| bool IsFatal() const OVERRIDE { return true; } |
| |
| const char* GetDescription() const OVERRIDE { return "DivZeroCheckSlowPathARM64"; } |
| |
| private: |
| HDivZeroCheck* const instruction_; |
| DISALLOW_COPY_AND_ASSIGN(DivZeroCheckSlowPathARM64); |
| }; |
| |
| class LoadClassSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| LoadClassSlowPathARM64(HLoadClass* cls, |
| HInstruction* at, |
| uint32_t dex_pc, |
| bool do_clinit) |
| : cls_(cls), at_(at), dex_pc_(dex_pc), do_clinit_(do_clinit) { |
| DCHECK(at->IsLoadClass() || at->IsClinitCheck()); |
| } |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| LocationSummary* locations = at_->GetLocations(); |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| |
| __ Bind(GetEntryLabel()); |
| SaveLiveRegisters(codegen, locations); |
| |
| InvokeRuntimeCallingConvention calling_convention; |
| __ Mov(calling_convention.GetRegisterAt(0).W(), cls_->GetTypeIndex()); |
| int32_t entry_point_offset = do_clinit_ ? QUICK_ENTRY_POINT(pInitializeStaticStorage) |
| : QUICK_ENTRY_POINT(pInitializeType); |
| arm64_codegen->InvokeRuntime(entry_point_offset, at_, dex_pc_, this); |
| if (do_clinit_) { |
| CheckEntrypointTypes<kQuickInitializeStaticStorage, void*, uint32_t>(); |
| } else { |
| CheckEntrypointTypes<kQuickInitializeType, void*, uint32_t>(); |
| } |
| |
| // Move the class to the desired location. |
| Location out = locations->Out(); |
| if (out.IsValid()) { |
| DCHECK(out.IsRegister() && !locations->GetLiveRegisters()->ContainsCoreRegister(out.reg())); |
| Primitive::Type type = at_->GetType(); |
| arm64_codegen->MoveLocation(out, calling_convention.GetReturnLocation(type), type); |
| } |
| |
| RestoreLiveRegisters(codegen, locations); |
| __ B(GetExitLabel()); |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "LoadClassSlowPathARM64"; } |
| |
| private: |
| // The class this slow path will load. |
| HLoadClass* const cls_; |
| |
| // The instruction where this slow path is happening. |
| // (Might be the load class or an initialization check). |
| HInstruction* const at_; |
| |
| // The dex PC of `at_`. |
| const uint32_t dex_pc_; |
| |
| // Whether to initialize the class. |
| const bool do_clinit_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LoadClassSlowPathARM64); |
| }; |
| |
| class LoadStringSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit LoadStringSlowPathARM64(HLoadString* instruction) : instruction_(instruction) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| LocationSummary* locations = instruction_->GetLocations(); |
| DCHECK(!locations->GetLiveRegisters()->ContainsCoreRegister(locations->Out().reg())); |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| |
| __ Bind(GetEntryLabel()); |
| SaveLiveRegisters(codegen, locations); |
| |
| InvokeRuntimeCallingConvention calling_convention; |
| __ Mov(calling_convention.GetRegisterAt(0).W(), instruction_->GetStringIndex()); |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pResolveString), instruction_, instruction_->GetDexPc(), this); |
| CheckEntrypointTypes<kQuickResolveString, void*, uint32_t>(); |
| Primitive::Type type = instruction_->GetType(); |
| arm64_codegen->MoveLocation(locations->Out(), calling_convention.GetReturnLocation(type), type); |
| |
| RestoreLiveRegisters(codegen, locations); |
| __ B(GetExitLabel()); |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "LoadStringSlowPathARM64"; } |
| |
| private: |
| HLoadString* const instruction_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LoadStringSlowPathARM64); |
| }; |
| |
| class NullCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit NullCheckSlowPathARM64(HNullCheck* instr) : instruction_(instr) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| __ Bind(GetEntryLabel()); |
| if (instruction_->CanThrowIntoCatchBlock()) { |
| // Live registers will be restored in the catch block if caught. |
| SaveLiveRegisters(codegen, instruction_->GetLocations()); |
| } |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pThrowNullPointer), instruction_, instruction_->GetDexPc(), this); |
| CheckEntrypointTypes<kQuickThrowNullPointer, void, void>(); |
| } |
| |
| bool IsFatal() const OVERRIDE { return true; } |
| |
| const char* GetDescription() const OVERRIDE { return "NullCheckSlowPathARM64"; } |
| |
| private: |
| HNullCheck* const instruction_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NullCheckSlowPathARM64); |
| }; |
| |
| class SuspendCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| SuspendCheckSlowPathARM64(HSuspendCheck* instruction, HBasicBlock* successor) |
| : instruction_(instruction), successor_(successor) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| __ Bind(GetEntryLabel()); |
| SaveLiveRegisters(codegen, instruction_->GetLocations()); |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pTestSuspend), instruction_, instruction_->GetDexPc(), this); |
| CheckEntrypointTypes<kQuickTestSuspend, void, void>(); |
| RestoreLiveRegisters(codegen, instruction_->GetLocations()); |
| if (successor_ == nullptr) { |
| __ B(GetReturnLabel()); |
| } else { |
| __ B(arm64_codegen->GetLabelOf(successor_)); |
| } |
| } |
| |
| vixl::Label* GetReturnLabel() { |
| DCHECK(successor_ == nullptr); |
| return &return_label_; |
| } |
| |
| HBasicBlock* GetSuccessor() const { |
| return successor_; |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "SuspendCheckSlowPathARM64"; } |
| |
| 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); |
| }; |
| |
| class TypeCheckSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| TypeCheckSlowPathARM64(HInstruction* instruction, bool is_fatal) |
| : instruction_(instruction), is_fatal_(is_fatal) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| LocationSummary* locations = instruction_->GetLocations(); |
| Location class_to_check = locations->InAt(1); |
| Location object_class = instruction_->IsCheckCast() ? locations->GetTemp(0) |
| : locations->Out(); |
| DCHECK(instruction_->IsCheckCast() |
| || !locations->GetLiveRegisters()->ContainsCoreRegister(locations->Out().reg())); |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| uint32_t dex_pc = instruction_->GetDexPc(); |
| |
| __ Bind(GetEntryLabel()); |
| |
| if (instruction_->IsCheckCast()) { |
| // The codegen for the instruction overwrites `temp`, so put it back in place. |
| Register obj = InputRegisterAt(instruction_, 0); |
| Register temp = WRegisterFrom(locations->GetTemp(0)); |
| uint32_t class_offset = mirror::Object::ClassOffset().Int32Value(); |
| __ Ldr(temp, HeapOperand(obj, class_offset)); |
| arm64_codegen->GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| } |
| |
| if (!is_fatal_) { |
| SaveLiveRegisters(codegen, locations); |
| } |
| |
| // We're moving two locations to locations that could overlap, so we need a parallel |
| // move resolver. |
| InvokeRuntimeCallingConvention calling_convention; |
| codegen->EmitParallelMoves( |
| class_to_check, LocationFrom(calling_convention.GetRegisterAt(0)), Primitive::kPrimNot, |
| object_class, LocationFrom(calling_convention.GetRegisterAt(1)), Primitive::kPrimNot); |
| |
| if (instruction_->IsInstanceOf()) { |
| arm64_codegen->InvokeRuntime( |
| QUICK_ENTRY_POINT(pInstanceofNonTrivial), instruction_, dex_pc, this); |
| Primitive::Type ret_type = instruction_->GetType(); |
| Location ret_loc = calling_convention.GetReturnLocation(ret_type); |
| arm64_codegen->MoveLocation(locations->Out(), ret_loc, ret_type); |
| CheckEntrypointTypes<kQuickInstanceofNonTrivial, uint32_t, |
| const mirror::Class*, const mirror::Class*>(); |
| } else { |
| DCHECK(instruction_->IsCheckCast()); |
| arm64_codegen->InvokeRuntime(QUICK_ENTRY_POINT(pCheckCast), instruction_, dex_pc, this); |
| CheckEntrypointTypes<kQuickCheckCast, void, const mirror::Class*, const mirror::Class*>(); |
| } |
| |
| if (!is_fatal_) { |
| RestoreLiveRegisters(codegen, locations); |
| __ B(GetExitLabel()); |
| } |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "TypeCheckSlowPathARM64"; } |
| bool IsFatal() const { return is_fatal_; } |
| |
| private: |
| HInstruction* const instruction_; |
| const bool is_fatal_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TypeCheckSlowPathARM64); |
| }; |
| |
| class DeoptimizationSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit DeoptimizationSlowPathARM64(HInstruction* instruction) |
| : instruction_(instruction) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| __ Bind(GetEntryLabel()); |
| SaveLiveRegisters(codegen, instruction_->GetLocations()); |
| DCHECK(instruction_->IsDeoptimize()); |
| HDeoptimize* deoptimize = instruction_->AsDeoptimize(); |
| uint32_t dex_pc = deoptimize->GetDexPc(); |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| arm64_codegen->InvokeRuntime(QUICK_ENTRY_POINT(pDeoptimize), instruction_, dex_pc, this); |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "DeoptimizationSlowPathARM64"; } |
| |
| private: |
| HInstruction* const instruction_; |
| DISALLOW_COPY_AND_ASSIGN(DeoptimizationSlowPathARM64); |
| }; |
| |
| class ArraySetSlowPathARM64 : public SlowPathCodeARM64 { |
| public: |
| explicit ArraySetSlowPathARM64(HInstruction* instruction) : instruction_(instruction) {} |
| |
| void EmitNativeCode(CodeGenerator* codegen) OVERRIDE { |
| LocationSummary* locations = instruction_->GetLocations(); |
| __ Bind(GetEntryLabel()); |
| SaveLiveRegisters(codegen, locations); |
| |
| InvokeRuntimeCallingConvention calling_convention; |
| HParallelMove parallel_move(codegen->GetGraph()->GetArena()); |
| parallel_move.AddMove( |
| locations->InAt(0), |
| LocationFrom(calling_convention.GetRegisterAt(0)), |
| Primitive::kPrimNot, |
| nullptr); |
| parallel_move.AddMove( |
| locations->InAt(1), |
| LocationFrom(calling_convention.GetRegisterAt(1)), |
| Primitive::kPrimInt, |
| nullptr); |
| parallel_move.AddMove( |
| locations->InAt(2), |
| LocationFrom(calling_convention.GetRegisterAt(2)), |
| Primitive::kPrimNot, |
| nullptr); |
| codegen->GetMoveResolver()->EmitNativeCode(¶llel_move); |
| |
| CodeGeneratorARM64* arm64_codegen = down_cast<CodeGeneratorARM64*>(codegen); |
| arm64_codegen->InvokeRuntime(QUICK_ENTRY_POINT(pAputObject), |
| instruction_, |
| instruction_->GetDexPc(), |
| this); |
| CheckEntrypointTypes<kQuickAputObject, void, mirror::Array*, int32_t, mirror::Object*>(); |
| RestoreLiveRegisters(codegen, locations); |
| __ B(GetExitLabel()); |
| } |
| |
| const char* GetDescription() const OVERRIDE { return "ArraySetSlowPathARM64"; } |
| |
| private: |
| HInstruction* const instruction_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ArraySetSlowPathARM64); |
| }; |
| |
| #undef __ |
| |
| Location InvokeDexCallingConventionVisitorARM64::GetNextLocation(Primitive::Type type) { |
| Location next_location; |
| if (type == Primitive::kPrimVoid) { |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| |
| if (Primitive::IsFloatingPointType(type) && |
| (float_index_ < calling_convention.GetNumberOfFpuRegisters())) { |
| next_location = LocationFrom(calling_convention.GetFpuRegisterAt(float_index_++)); |
| } else if (!Primitive::IsFloatingPointType(type) && |
| (gp_index_ < calling_convention.GetNumberOfRegisters())) { |
| next_location = LocationFrom(calling_convention.GetRegisterAt(gp_index_++)); |
| } else { |
| size_t stack_offset = calling_convention.GetStackOffsetOf(stack_index_); |
| next_location = Primitive::Is64BitType(type) ? Location::DoubleStackSlot(stack_offset) |
| : Location::StackSlot(stack_offset); |
| } |
| |
| // Space on the stack is reserved for all arguments. |
| stack_index_ += Primitive::Is64BitType(type) ? 2 : 1; |
| return next_location; |
| } |
| |
| Location InvokeDexCallingConventionVisitorARM64::GetMethodLocation() const { |
| return LocationFrom(kArtMethodRegister); |
| } |
| |
| CodeGeneratorARM64::CodeGeneratorARM64(HGraph* graph, |
| const Arm64InstructionSetFeatures& isa_features, |
| const CompilerOptions& compiler_options, |
| OptimizingCompilerStats* stats) |
| : CodeGenerator(graph, |
| kNumberOfAllocatableRegisters, |
| kNumberOfAllocatableFPRegisters, |
| kNumberOfAllocatableRegisterPairs, |
| callee_saved_core_registers.list(), |
| callee_saved_fp_registers.list(), |
| compiler_options, |
| stats), |
| block_labels_(nullptr), |
| location_builder_(graph, this), |
| instruction_visitor_(graph, this), |
| move_resolver_(graph->GetArena(), this), |
| isa_features_(isa_features), |
| uint64_literals_(std::less<uint64_t>(), |
| graph->GetArena()->Adapter(kArenaAllocCodeGenerator)), |
| method_patches_(MethodReferenceComparator(), |
| graph->GetArena()->Adapter(kArenaAllocCodeGenerator)), |
| call_patches_(MethodReferenceComparator(), |
| graph->GetArena()->Adapter(kArenaAllocCodeGenerator)), |
| relative_call_patches_(graph->GetArena()->Adapter(kArenaAllocCodeGenerator)), |
| pc_rel_dex_cache_patches_(graph->GetArena()->Adapter(kArenaAllocCodeGenerator)) { |
| // Save the link register (containing the return address) to mimic Quick. |
| AddAllocatedRegister(LocationFrom(lr)); |
| } |
| |
| #undef __ |
| #define __ GetVIXLAssembler()-> |
| |
| void CodeGeneratorARM64::Finalize(CodeAllocator* allocator) { |
| // Ensure we emit the literal pool. |
| __ FinalizeCode(); |
| |
| CodeGenerator::Finalize(allocator); |
| } |
| |
| void ParallelMoveResolverARM64::PrepareForEmitNativeCode() { |
| // Note: There are 6 kinds of moves: |
| // 1. constant -> GPR/FPR (non-cycle) |
| // 2. constant -> stack (non-cycle) |
| // 3. GPR/FPR -> GPR/FPR |
| // 4. GPR/FPR -> stack |
| // 5. stack -> GPR/FPR |
| // 6. stack -> stack (non-cycle) |
| // Case 1, 2 and 6 should never be included in a dependency cycle on ARM64. For case 3, 4, and 5 |
| // VIXL uses at most 1 GPR. VIXL has 2 GPR and 1 FPR temps, and there should be no intersecting |
| // cycles on ARM64, so we always have 1 GPR and 1 FPR available VIXL temps to resolve the |
| // dependency. |
| vixl_temps_.Open(GetVIXLAssembler()); |
| } |
| |
| void ParallelMoveResolverARM64::FinishEmitNativeCode() { |
| vixl_temps_.Close(); |
| } |
| |
| Location ParallelMoveResolverARM64::AllocateScratchLocationFor(Location::Kind kind) { |
| DCHECK(kind == Location::kRegister || kind == Location::kFpuRegister || |
| kind == Location::kStackSlot || kind == Location::kDoubleStackSlot); |
| kind = (kind == Location::kFpuRegister) ? Location::kFpuRegister : Location::kRegister; |
| Location scratch = GetScratchLocation(kind); |
| if (!scratch.Equals(Location::NoLocation())) { |
| return scratch; |
| } |
| // Allocate from VIXL temp registers. |
| if (kind == Location::kRegister) { |
| scratch = LocationFrom(vixl_temps_.AcquireX()); |
| } else { |
| DCHECK(kind == Location::kFpuRegister); |
| scratch = LocationFrom(vixl_temps_.AcquireD()); |
| } |
| AddScratchLocation(scratch); |
| return scratch; |
| } |
| |
| void ParallelMoveResolverARM64::FreeScratchLocation(Location loc) { |
| if (loc.IsRegister()) { |
| vixl_temps_.Release(XRegisterFrom(loc)); |
| } else { |
| DCHECK(loc.IsFpuRegister()); |
| vixl_temps_.Release(DRegisterFrom(loc)); |
| } |
| RemoveScratchLocation(loc); |
| } |
| |
| void ParallelMoveResolverARM64::EmitMove(size_t index) { |
| MoveOperands* move = moves_[index]; |
| codegen_->MoveLocation(move->GetDestination(), move->GetSource(), Primitive::kPrimVoid); |
| } |
| |
| void CodeGeneratorARM64::GenerateFrameEntry() { |
| MacroAssembler* masm = GetVIXLAssembler(); |
| BlockPoolsScope block_pools(masm); |
| __ Bind(&frame_entry_label_); |
| |
| bool do_overflow_check = FrameNeedsStackCheck(GetFrameSize(), kArm64) || !IsLeafMethod(); |
| if (do_overflow_check) { |
| UseScratchRegisterScope temps(masm); |
| Register temp = temps.AcquireX(); |
| DCHECK(GetCompilerOptions().GetImplicitStackOverflowChecks()); |
| __ Sub(temp, sp, static_cast<int32_t>(GetStackOverflowReservedBytes(kArm64))); |
| __ Ldr(wzr, MemOperand(temp, 0)); |
| RecordPcInfo(nullptr, 0); |
| } |
| |
| if (!HasEmptyFrame()) { |
| int frame_size = GetFrameSize(); |
| // Stack layout: |
| // sp[frame_size - 8] : lr. |
| // ... : other preserved core registers. |
| // ... : other preserved fp registers. |
| // ... : reserved frame space. |
| // sp[0] : current method. |
| __ Str(kArtMethodRegister, MemOperand(sp, -frame_size, PreIndex)); |
| GetAssembler()->cfi().AdjustCFAOffset(frame_size); |
| GetAssembler()->SpillRegisters(GetFramePreservedCoreRegisters(), |
| frame_size - GetCoreSpillSize()); |
| GetAssembler()->SpillRegisters(GetFramePreservedFPRegisters(), |
| frame_size - FrameEntrySpillSize()); |
| } |
| } |
| |
| void CodeGeneratorARM64::GenerateFrameExit() { |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| GetAssembler()->cfi().RememberState(); |
| if (!HasEmptyFrame()) { |
| int frame_size = GetFrameSize(); |
| GetAssembler()->UnspillRegisters(GetFramePreservedFPRegisters(), |
| frame_size - FrameEntrySpillSize()); |
| GetAssembler()->UnspillRegisters(GetFramePreservedCoreRegisters(), |
| frame_size - GetCoreSpillSize()); |
| __ Drop(frame_size); |
| GetAssembler()->cfi().AdjustCFAOffset(-frame_size); |
| } |
| __ Ret(); |
| GetAssembler()->cfi().RestoreState(); |
| GetAssembler()->cfi().DefCFAOffset(GetFrameSize()); |
| } |
| |
| vixl::CPURegList CodeGeneratorARM64::GetFramePreservedCoreRegisters() const { |
| DCHECK(ArtVixlRegCodeCoherentForRegSet(core_spill_mask_, GetNumberOfCoreRegisters(), 0, 0)); |
| return vixl::CPURegList(vixl::CPURegister::kRegister, vixl::kXRegSize, |
| core_spill_mask_); |
| } |
| |
| vixl::CPURegList CodeGeneratorARM64::GetFramePreservedFPRegisters() const { |
| DCHECK(ArtVixlRegCodeCoherentForRegSet(0, 0, fpu_spill_mask_, |
| GetNumberOfFloatingPointRegisters())); |
| return vixl::CPURegList(vixl::CPURegister::kFPRegister, vixl::kDRegSize, |
| fpu_spill_mask_); |
| } |
| |
| void CodeGeneratorARM64::Bind(HBasicBlock* block) { |
| __ Bind(GetLabelOf(block)); |
| } |
| |
| void CodeGeneratorARM64::Move(HInstruction* instruction, |
| Location location, |
| HInstruction* move_for) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Primitive::Type type = instruction->GetType(); |
| DCHECK_NE(type, Primitive::kPrimVoid); |
| |
| if (instruction->IsFakeString()) { |
| // The fake string is an alias for null. |
| DCHECK(IsBaseline()); |
| instruction = locations->Out().GetConstant(); |
| DCHECK(instruction->IsNullConstant()) << instruction->DebugName(); |
| } |
| |
| if (instruction->IsCurrentMethod()) { |
| MoveLocation(location, |
| Location::DoubleStackSlot(kCurrentMethodStackOffset), |
| Primitive::kPrimVoid); |
| } else if (locations != nullptr && locations->Out().Equals(location)) { |
| return; |
| } else if (instruction->IsIntConstant() |
| || instruction->IsLongConstant() |
| || instruction->IsNullConstant()) { |
| int64_t value = GetInt64ValueOf(instruction->AsConstant()); |
| if (location.IsRegister()) { |
| Register dst = RegisterFrom(location, type); |
| DCHECK(((instruction->IsIntConstant() || instruction->IsNullConstant()) && dst.Is32Bits()) || |
| (instruction->IsLongConstant() && dst.Is64Bits())); |
| __ Mov(dst, value); |
| } else { |
| DCHECK(location.IsStackSlot() || location.IsDoubleStackSlot()); |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp = (instruction->IsIntConstant() || instruction->IsNullConstant()) |
| ? temps.AcquireW() |
| : temps.AcquireX(); |
| __ Mov(temp, value); |
| __ Str(temp, StackOperandFrom(location)); |
| } |
| } else if (instruction->IsTemporary()) { |
| Location temp_location = GetTemporaryLocation(instruction->AsTemporary()); |
| MoveLocation(location, temp_location, type); |
| } else if (instruction->IsLoadLocal()) { |
| uint32_t stack_slot = GetStackSlot(instruction->AsLoadLocal()->GetLocal()); |
| if (Primitive::Is64BitType(type)) { |
| MoveLocation(location, Location::DoubleStackSlot(stack_slot), type); |
| } else { |
| MoveLocation(location, Location::StackSlot(stack_slot), type); |
| } |
| |
| } else { |
| DCHECK((instruction->GetNext() == move_for) || instruction->GetNext()->IsTemporary()); |
| MoveLocation(location, locations->Out(), type); |
| } |
| } |
| |
| void CodeGeneratorARM64::MoveConstant(Location location, int32_t value) { |
| DCHECK(location.IsRegister()); |
| __ Mov(RegisterFrom(location, Primitive::kPrimInt), value); |
| } |
| |
| void CodeGeneratorARM64::AddLocationAsTemp(Location location, LocationSummary* locations) { |
| if (location.IsRegister()) { |
| locations->AddTemp(location); |
| } else { |
| UNIMPLEMENTED(FATAL) << "AddLocationAsTemp not implemented for location " << location; |
| } |
| } |
| |
| Location CodeGeneratorARM64::GetStackLocation(HLoadLocal* load) const { |
| Primitive::Type type = load->GetType(); |
| |
| switch (type) { |
| case Primitive::kPrimNot: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimFloat: |
| return Location::StackSlot(GetStackSlot(load->GetLocal())); |
| |
| case Primitive::kPrimLong: |
| case Primitive::kPrimDouble: |
| return Location::DoubleStackSlot(GetStackSlot(load->GetLocal())); |
| |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unexpected type " << type; |
| } |
| |
| LOG(FATAL) << "Unreachable"; |
| return Location::NoLocation(); |
| } |
| |
| void CodeGeneratorARM64::MarkGCCard(Register object, Register value, bool value_can_be_null) { |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register card = temps.AcquireX(); |
| Register temp = temps.AcquireW(); // Index within the CardTable - 32bit. |
| vixl::Label done; |
| if (value_can_be_null) { |
| __ Cbz(value, &done); |
| } |
| __ Ldr(card, MemOperand(tr, Thread::CardTableOffset<kArm64WordSize>().Int32Value())); |
| __ Lsr(temp, object, gc::accounting::CardTable::kCardShift); |
| __ Strb(card, MemOperand(card, temp.X())); |
| if (value_can_be_null) { |
| __ Bind(&done); |
| } |
| } |
| |
| void CodeGeneratorARM64::SetupBlockedRegisters(bool is_baseline) const { |
| // Blocked core registers: |
| // lr : Runtime reserved. |
| // tr : Runtime reserved. |
| // xSuspend : Runtime reserved. TODO: Unblock this when the runtime stops using it. |
| // ip1 : VIXL core temp. |
| // ip0 : VIXL core temp. |
| // |
| // Blocked fp registers: |
| // d31 : VIXL fp temp. |
| CPURegList reserved_core_registers = vixl_reserved_core_registers; |
| reserved_core_registers.Combine(runtime_reserved_core_registers); |
| while (!reserved_core_registers.IsEmpty()) { |
| blocked_core_registers_[reserved_core_registers.PopLowestIndex().code()] = true; |
| } |
| |
| CPURegList reserved_fp_registers = vixl_reserved_fp_registers; |
| while (!reserved_fp_registers.IsEmpty()) { |
| blocked_fpu_registers_[reserved_fp_registers.PopLowestIndex().code()] = true; |
| } |
| |
| if (is_baseline) { |
| CPURegList reserved_core_baseline_registers = callee_saved_core_registers; |
| while (!reserved_core_baseline_registers.IsEmpty()) { |
| blocked_core_registers_[reserved_core_baseline_registers.PopLowestIndex().code()] = true; |
| } |
| } |
| |
| if (is_baseline || GetGraph()->IsDebuggable()) { |
| // Stubs do not save callee-save floating point registers. If the graph |
| // is debuggable, we need to deal with these registers differently. For |
| // now, just block them. |
| CPURegList reserved_fp_baseline_registers = callee_saved_fp_registers; |
| while (!reserved_fp_baseline_registers.IsEmpty()) { |
| blocked_fpu_registers_[reserved_fp_baseline_registers.PopLowestIndex().code()] = true; |
| } |
| } |
| } |
| |
| Location CodeGeneratorARM64::AllocateFreeRegister(Primitive::Type type) const { |
| if (type == Primitive::kPrimVoid) { |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| |
| if (Primitive::IsFloatingPointType(type)) { |
| ssize_t reg = FindFreeEntry(blocked_fpu_registers_, kNumberOfAllocatableFPRegisters); |
| DCHECK_NE(reg, -1); |
| return Location::FpuRegisterLocation(reg); |
| } else { |
| ssize_t reg = FindFreeEntry(blocked_core_registers_, kNumberOfAllocatableRegisters); |
| DCHECK_NE(reg, -1); |
| return Location::RegisterLocation(reg); |
| } |
| } |
| |
| size_t CodeGeneratorARM64::SaveCoreRegister(size_t stack_index, uint32_t reg_id) { |
| Register reg = Register(VIXLRegCodeFromART(reg_id), kXRegSize); |
| __ Str(reg, MemOperand(sp, stack_index)); |
| return kArm64WordSize; |
| } |
| |
| size_t CodeGeneratorARM64::RestoreCoreRegister(size_t stack_index, uint32_t reg_id) { |
| Register reg = Register(VIXLRegCodeFromART(reg_id), kXRegSize); |
| __ Ldr(reg, MemOperand(sp, stack_index)); |
| return kArm64WordSize; |
| } |
| |
| size_t CodeGeneratorARM64::SaveFloatingPointRegister(size_t stack_index, uint32_t reg_id) { |
| FPRegister reg = FPRegister(reg_id, kDRegSize); |
| __ Str(reg, MemOperand(sp, stack_index)); |
| return kArm64WordSize; |
| } |
| |
| size_t CodeGeneratorARM64::RestoreFloatingPointRegister(size_t stack_index, uint32_t reg_id) { |
| FPRegister reg = FPRegister(reg_id, kDRegSize); |
| __ Ldr(reg, MemOperand(sp, stack_index)); |
| return kArm64WordSize; |
| } |
| |
| void CodeGeneratorARM64::DumpCoreRegister(std::ostream& stream, int reg) const { |
| stream << XRegister(reg); |
| } |
| |
| void CodeGeneratorARM64::DumpFloatingPointRegister(std::ostream& stream, int reg) const { |
| stream << DRegister(reg); |
| } |
| |
| void CodeGeneratorARM64::MoveConstant(CPURegister destination, HConstant* constant) { |
| if (constant->IsIntConstant()) { |
| __ Mov(Register(destination), constant->AsIntConstant()->GetValue()); |
| } else if (constant->IsLongConstant()) { |
| __ Mov(Register(destination), constant->AsLongConstant()->GetValue()); |
| } else if (constant->IsNullConstant()) { |
| __ Mov(Register(destination), 0); |
| } else if (constant->IsFloatConstant()) { |
| __ Fmov(FPRegister(destination), constant->AsFloatConstant()->GetValue()); |
| } else { |
| DCHECK(constant->IsDoubleConstant()); |
| __ Fmov(FPRegister(destination), constant->AsDoubleConstant()->GetValue()); |
| } |
| } |
| |
| |
| static bool CoherentConstantAndType(Location constant, Primitive::Type type) { |
| DCHECK(constant.IsConstant()); |
| HConstant* cst = constant.GetConstant(); |
| return (cst->IsIntConstant() && type == Primitive::kPrimInt) || |
| // Null is mapped to a core W register, which we associate with kPrimInt. |
| (cst->IsNullConstant() && type == Primitive::kPrimInt) || |
| (cst->IsLongConstant() && type == Primitive::kPrimLong) || |
| (cst->IsFloatConstant() && type == Primitive::kPrimFloat) || |
| (cst->IsDoubleConstant() && type == Primitive::kPrimDouble); |
| } |
| |
| void CodeGeneratorARM64::MoveLocation(Location destination, |
| Location source, |
| Primitive::Type dst_type) { |
| if (source.Equals(destination)) { |
| return; |
| } |
| |
| // A valid move can always be inferred from the destination and source |
| // locations. When moving from and to a register, the argument type can be |
| // used to generate 32bit instead of 64bit moves. In debug mode we also |
| // checks the coherency of the locations and the type. |
| bool unspecified_type = (dst_type == Primitive::kPrimVoid); |
| |
| if (destination.IsRegister() || destination.IsFpuRegister()) { |
| if (unspecified_type) { |
| HConstant* src_cst = source.IsConstant() ? source.GetConstant() : nullptr; |
| if (source.IsStackSlot() || |
| (src_cst != nullptr && (src_cst->IsIntConstant() |
| || src_cst->IsFloatConstant() |
| || src_cst->IsNullConstant()))) { |
| // For stack slots and 32bit constants, a 64bit type is appropriate. |
| dst_type = destination.IsRegister() ? Primitive::kPrimInt : Primitive::kPrimFloat; |
| } else { |
| // If the source is a double stack slot or a 64bit constant, a 64bit |
| // type is appropriate. Else the source is a register, and since the |
| // type has not been specified, we chose a 64bit type to force a 64bit |
| // move. |
| dst_type = destination.IsRegister() ? Primitive::kPrimLong : Primitive::kPrimDouble; |
| } |
| } |
| DCHECK((destination.IsFpuRegister() && Primitive::IsFloatingPointType(dst_type)) || |
| (destination.IsRegister() && !Primitive::IsFloatingPointType(dst_type))); |
| CPURegister dst = CPURegisterFrom(destination, dst_type); |
| if (source.IsStackSlot() || source.IsDoubleStackSlot()) { |
| DCHECK(dst.Is64Bits() == source.IsDoubleStackSlot()); |
| __ Ldr(dst, StackOperandFrom(source)); |
| } else if (source.IsConstant()) { |
| DCHECK(CoherentConstantAndType(source, dst_type)); |
| MoveConstant(dst, source.GetConstant()); |
| } else if (source.IsRegister()) { |
| if (destination.IsRegister()) { |
| __ Mov(Register(dst), RegisterFrom(source, dst_type)); |
| } else { |
| DCHECK(destination.IsFpuRegister()); |
| Primitive::Type source_type = Primitive::Is64BitType(dst_type) |
| ? Primitive::kPrimLong |
| : Primitive::kPrimInt; |
| __ Fmov(FPRegisterFrom(destination, dst_type), RegisterFrom(source, source_type)); |
| } |
| } else { |
| DCHECK(source.IsFpuRegister()); |
| if (destination.IsRegister()) { |
| Primitive::Type source_type = Primitive::Is64BitType(dst_type) |
| ? Primitive::kPrimDouble |
| : Primitive::kPrimFloat; |
| __ Fmov(RegisterFrom(destination, dst_type), FPRegisterFrom(source, source_type)); |
| } else { |
| DCHECK(destination.IsFpuRegister()); |
| __ Fmov(FPRegister(dst), FPRegisterFrom(source, dst_type)); |
| } |
| } |
| } else { // The destination is not a register. It must be a stack slot. |
| DCHECK(destination.IsStackSlot() || destination.IsDoubleStackSlot()); |
| if (source.IsRegister() || source.IsFpuRegister()) { |
| if (unspecified_type) { |
| if (source.IsRegister()) { |
| dst_type = destination.IsStackSlot() ? Primitive::kPrimInt : Primitive::kPrimLong; |
| } else { |
| dst_type = destination.IsStackSlot() ? Primitive::kPrimFloat : Primitive::kPrimDouble; |
| } |
| } |
| DCHECK((destination.IsDoubleStackSlot() == Primitive::Is64BitType(dst_type)) && |
| (source.IsFpuRegister() == Primitive::IsFloatingPointType(dst_type))); |
| __ Str(CPURegisterFrom(source, dst_type), StackOperandFrom(destination)); |
| } else if (source.IsConstant()) { |
| DCHECK(unspecified_type || CoherentConstantAndType(source, dst_type)) |
| << source << " " << dst_type; |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| HConstant* src_cst = source.GetConstant(); |
| CPURegister temp; |
| if (src_cst->IsIntConstant() || src_cst->IsNullConstant()) { |
| temp = temps.AcquireW(); |
| } else if (src_cst->IsLongConstant()) { |
| temp = temps.AcquireX(); |
| } else if (src_cst->IsFloatConstant()) { |
| temp = temps.AcquireS(); |
| } else { |
| DCHECK(src_cst->IsDoubleConstant()); |
| temp = temps.AcquireD(); |
| } |
| MoveConstant(temp, src_cst); |
| __ Str(temp, StackOperandFrom(destination)); |
| } else { |
| DCHECK(source.IsStackSlot() || source.IsDoubleStackSlot()); |
| DCHECK(source.IsDoubleStackSlot() == destination.IsDoubleStackSlot()); |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| // There is generally less pressure on FP registers. |
| FPRegister temp = destination.IsDoubleStackSlot() ? temps.AcquireD() : temps.AcquireS(); |
| __ Ldr(temp, StackOperandFrom(source)); |
| __ Str(temp, StackOperandFrom(destination)); |
| } |
| } |
| } |
| |
| void CodeGeneratorARM64::Load(Primitive::Type type, |
| CPURegister dst, |
| const MemOperand& src) { |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| __ Ldrb(Register(dst), src); |
| break; |
| case Primitive::kPrimByte: |
| __ Ldrsb(Register(dst), src); |
| break; |
| case Primitive::kPrimShort: |
| __ Ldrsh(Register(dst), src); |
| break; |
| case Primitive::kPrimChar: |
| __ Ldrh(Register(dst), src); |
| break; |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| DCHECK_EQ(dst.Is64Bits(), Primitive::Is64BitType(type)); |
| __ Ldr(dst, src); |
| break; |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| } |
| |
| void CodeGeneratorARM64::LoadAcquire(HInstruction* instruction, |
| CPURegister dst, |
| const MemOperand& src) { |
| MacroAssembler* masm = GetVIXLAssembler(); |
| BlockPoolsScope block_pools(masm); |
| UseScratchRegisterScope temps(masm); |
| Register temp_base = temps.AcquireX(); |
| Primitive::Type type = instruction->GetType(); |
| |
| DCHECK(!src.IsPreIndex()); |
| DCHECK(!src.IsPostIndex()); |
| |
| // TODO(vixl): Let the MacroAssembler handle MemOperand. |
| __ Add(temp_base, src.base(), OperandFromMemOperand(src)); |
| MemOperand base = MemOperand(temp_base); |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| __ Ldarb(Register(dst), base); |
| MaybeRecordImplicitNullCheck(instruction); |
| break; |
| case Primitive::kPrimByte: |
| __ Ldarb(Register(dst), base); |
| MaybeRecordImplicitNullCheck(instruction); |
| __ Sbfx(Register(dst), Register(dst), 0, Primitive::ComponentSize(type) * kBitsPerByte); |
| break; |
| case Primitive::kPrimChar: |
| __ Ldarh(Register(dst), base); |
| MaybeRecordImplicitNullCheck(instruction); |
| break; |
| case Primitive::kPrimShort: |
| __ Ldarh(Register(dst), base); |
| MaybeRecordImplicitNullCheck(instruction); |
| __ Sbfx(Register(dst), Register(dst), 0, Primitive::ComponentSize(type) * kBitsPerByte); |
| break; |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: |
| DCHECK_EQ(dst.Is64Bits(), Primitive::Is64BitType(type)); |
| __ Ldar(Register(dst), base); |
| MaybeRecordImplicitNullCheck(instruction); |
| break; |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| DCHECK(dst.IsFPRegister()); |
| DCHECK_EQ(dst.Is64Bits(), Primitive::Is64BitType(type)); |
| |
| Register temp = dst.Is64Bits() ? temps.AcquireX() : temps.AcquireW(); |
| __ Ldar(temp, base); |
| MaybeRecordImplicitNullCheck(instruction); |
| __ Fmov(FPRegister(dst), temp); |
| break; |
| } |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| } |
| |
| void CodeGeneratorARM64::Store(Primitive::Type type, |
| CPURegister src, |
| const MemOperand& dst) { |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| __ Strb(Register(src), dst); |
| break; |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| __ Strh(Register(src), dst); |
| break; |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| DCHECK_EQ(src.Is64Bits(), Primitive::Is64BitType(type)); |
| __ Str(src, dst); |
| break; |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| } |
| |
| void CodeGeneratorARM64::StoreRelease(Primitive::Type type, |
| CPURegister src, |
| const MemOperand& dst) { |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp_base = temps.AcquireX(); |
| |
| DCHECK(!dst.IsPreIndex()); |
| DCHECK(!dst.IsPostIndex()); |
| |
| // TODO(vixl): Let the MacroAssembler handle this. |
| Operand op = OperandFromMemOperand(dst); |
| __ Add(temp_base, dst.base(), op); |
| MemOperand base = MemOperand(temp_base); |
| switch (type) { |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| __ Stlrb(Register(src), base); |
| break; |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| __ Stlrh(Register(src), base); |
| break; |
| case Primitive::kPrimInt: |
| case Primitive::kPrimNot: |
| case Primitive::kPrimLong: |
| DCHECK_EQ(src.Is64Bits(), Primitive::Is64BitType(type)); |
| __ Stlr(Register(src), base); |
| break; |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| DCHECK(src.IsFPRegister()); |
| DCHECK_EQ(src.Is64Bits(), Primitive::Is64BitType(type)); |
| |
| Register temp = src.Is64Bits() ? temps.AcquireX() : temps.AcquireW(); |
| __ Fmov(temp, FPRegister(src)); |
| __ Stlr(temp, base); |
| break; |
| } |
| case Primitive::kPrimVoid: |
| LOG(FATAL) << "Unreachable type " << type; |
| } |
| } |
| |
| void CodeGeneratorARM64::InvokeRuntime(QuickEntrypointEnum entrypoint, |
| HInstruction* instruction, |
| uint32_t dex_pc, |
| SlowPathCode* slow_path) { |
| InvokeRuntime(GetThreadOffset<kArm64WordSize>(entrypoint).Int32Value(), |
| instruction, |
| dex_pc, |
| slow_path); |
| } |
| |
| void CodeGeneratorARM64::InvokeRuntime(int32_t entry_point_offset, |
| HInstruction* instruction, |
| uint32_t dex_pc, |
| SlowPathCode* slow_path) { |
| ValidateInvokeRuntime(instruction, slow_path); |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| __ Ldr(lr, MemOperand(tr, entry_point_offset)); |
| __ Blr(lr); |
| RecordPcInfo(instruction, dex_pc, slow_path); |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateClassInitializationCheck(SlowPathCodeARM64* slow_path, |
| vixl::Register class_reg) { |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp = temps.AcquireW(); |
| size_t status_offset = mirror::Class::StatusOffset().SizeValue(); |
| bool use_acquire_release = codegen_->GetInstructionSetFeatures().PreferAcquireRelease(); |
| |
| // Even if the initialized flag is set, we need to ensure consistent memory ordering. |
| if (use_acquire_release) { |
| // TODO(vixl): Let the MacroAssembler handle MemOperand. |
| __ Add(temp, class_reg, status_offset); |
| __ Ldar(temp, HeapOperand(temp)); |
| __ Cmp(temp, mirror::Class::kStatusInitialized); |
| __ B(lt, slow_path->GetEntryLabel()); |
| } else { |
| __ Ldr(temp, HeapOperand(class_reg, status_offset)); |
| __ Cmp(temp, mirror::Class::kStatusInitialized); |
| __ B(lt, slow_path->GetEntryLabel()); |
| __ Dmb(InnerShareable, BarrierReads); |
| } |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateMemoryBarrier(MemBarrierKind kind) { |
| BarrierType type = BarrierAll; |
| |
| switch (kind) { |
| case MemBarrierKind::kAnyAny: |
| case MemBarrierKind::kAnyStore: { |
| type = BarrierAll; |
| break; |
| } |
| case MemBarrierKind::kLoadAny: { |
| type = BarrierReads; |
| break; |
| } |
| case MemBarrierKind::kStoreStore: { |
| type = BarrierWrites; |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unexpected memory barrier " << kind; |
| } |
| __ Dmb(InnerShareable, type); |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateSuspendCheck(HSuspendCheck* instruction, |
| HBasicBlock* successor) { |
| SuspendCheckSlowPathARM64* slow_path = |
| down_cast<SuspendCheckSlowPathARM64*>(instruction->GetSlowPath()); |
| if (slow_path == nullptr) { |
| slow_path = new (GetGraph()->GetArena()) SuspendCheckSlowPathARM64(instruction, successor); |
| instruction->SetSlowPath(slow_path); |
| codegen_->AddSlowPath(slow_path); |
| if (successor != nullptr) { |
| DCHECK(successor->IsLoopHeader()); |
| codegen_->ClearSpillSlotsFromLoopPhisInStackMap(instruction); |
| } |
| } else { |
| DCHECK_EQ(slow_path->GetSuccessor(), successor); |
| } |
| |
| UseScratchRegisterScope temps(codegen_->GetVIXLAssembler()); |
| Register temp = temps.AcquireW(); |
| |
| __ Ldrh(temp, MemOperand(tr, Thread::ThreadFlagsOffset<kArm64WordSize>().SizeValue())); |
| if (successor == nullptr) { |
| __ Cbnz(temp, slow_path->GetEntryLabel()); |
| __ Bind(slow_path->GetReturnLabel()); |
| } else { |
| __ Cbz(temp, codegen_->GetLabelOf(successor)); |
| __ B(slow_path->GetEntryLabel()); |
| // slow_path will return to GetLabelOf(successor). |
| } |
| } |
| |
| InstructionCodeGeneratorARM64::InstructionCodeGeneratorARM64(HGraph* graph, |
| CodeGeneratorARM64* codegen) |
| : HGraphVisitor(graph), |
| assembler_(codegen->GetAssembler()), |
| codegen_(codegen) {} |
| |
| #define FOR_EACH_UNIMPLEMENTED_INSTRUCTION(M) \ |
| /* No unimplemented IR. */ |
| |
| #define UNIMPLEMENTED_INSTRUCTION_BREAK_CODE(name) name##UnimplementedInstructionBreakCode |
| |
| enum UnimplementedInstructionBreakCode { |
| // Using a base helps identify when we hit such breakpoints. |
| UnimplementedInstructionBreakCodeBaseCode = 0x900, |
| #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) { \ |
| UNUSED(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 |
| #undef FOR_EACH_UNIMPLEMENTED_INSTRUCTION |
| |
| void LocationsBuilderARM64::HandleBinaryOp(HBinaryOperation* instr) { |
| 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, ARM64EncodableConstantOrRegister(instr->InputAt(1), instr)); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetInAt(1, Location::RequiresFpuRegister()); |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected " << instr->DebugName() << " type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::HandleFieldGet(HInstruction* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if (Primitive::IsFloatingPointType(instruction->GetType())) { |
| locations->SetOut(Location::RequiresFpuRegister()); |
| } else { |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleFieldGet(HInstruction* instruction, |
| const FieldInfo& field_info) { |
| DCHECK(instruction->IsInstanceFieldGet() || instruction->IsStaticFieldGet()); |
| Primitive::Type field_type = field_info.GetFieldType(); |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| |
| MemOperand field = HeapOperand(InputRegisterAt(instruction, 0), field_info.GetFieldOffset()); |
| bool use_acquire_release = codegen_->GetInstructionSetFeatures().PreferAcquireRelease(); |
| |
| if (field_info.IsVolatile()) { |
| if (use_acquire_release) { |
| // NB: LoadAcquire will record the pc info if needed. |
| codegen_->LoadAcquire(instruction, OutputCPURegister(instruction), field); |
| } else { |
| codegen_->Load(field_type, OutputCPURegister(instruction), field); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| // For IRIW sequential consistency kLoadAny is not sufficient. |
| GenerateMemoryBarrier(MemBarrierKind::kAnyAny); |
| } |
| } else { |
| codegen_->Load(field_type, OutputCPURegister(instruction), field); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } |
| |
| if (field_type == Primitive::kPrimNot) { |
| GetAssembler()->MaybeUnpoisonHeapReference(OutputCPURegister(instruction).W()); |
| } |
| } |
| |
| void LocationsBuilderARM64::HandleFieldSet(HInstruction* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if (Primitive::IsFloatingPointType(instruction->InputAt(1)->GetType())) { |
| locations->SetInAt(1, Location::RequiresFpuRegister()); |
| } else { |
| locations->SetInAt(1, Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleFieldSet(HInstruction* instruction, |
| const FieldInfo& field_info, |
| bool value_can_be_null) { |
| DCHECK(instruction->IsInstanceFieldSet() || instruction->IsStaticFieldSet()); |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| |
| Register obj = InputRegisterAt(instruction, 0); |
| CPURegister value = InputCPURegisterAt(instruction, 1); |
| CPURegister source = value; |
| Offset offset = field_info.GetFieldOffset(); |
| Primitive::Type field_type = field_info.GetFieldType(); |
| bool use_acquire_release = codegen_->GetInstructionSetFeatures().PreferAcquireRelease(); |
| |
| { |
| // We use a block to end the scratch scope before the write barrier, thus |
| // freeing the temporary registers so they can be used in `MarkGCCard`. |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| |
| if (kPoisonHeapReferences && field_type == Primitive::kPrimNot) { |
| DCHECK(value.IsW()); |
| Register temp = temps.AcquireW(); |
| __ Mov(temp, value.W()); |
| GetAssembler()->PoisonHeapReference(temp.W()); |
| source = temp; |
| } |
| |
| if (field_info.IsVolatile()) { |
| if (use_acquire_release) { |
| codegen_->StoreRelease(field_type, source, HeapOperand(obj, offset)); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } else { |
| GenerateMemoryBarrier(MemBarrierKind::kAnyStore); |
| codegen_->Store(field_type, source, HeapOperand(obj, offset)); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| GenerateMemoryBarrier(MemBarrierKind::kAnyAny); |
| } |
| } else { |
| codegen_->Store(field_type, source, HeapOperand(obj, offset)); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } |
| } |
| |
| if (CodeGenerator::StoreNeedsWriteBarrier(field_type, instruction->InputAt(1))) { |
| codegen_->MarkGCCard(obj, Register(value), value_can_be_null); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleBinaryOp(HBinaryOperation* instr) { |
| Primitive::Type type = instr->GetType(); |
| |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| Register dst = OutputRegister(instr); |
| Register lhs = InputRegisterAt(instr, 0); |
| Operand rhs = InputOperandAt(instr, 1); |
| if (instr->IsAdd()) { |
| __ Add(dst, lhs, rhs); |
| } else if (instr->IsAnd()) { |
| __ And(dst, lhs, rhs); |
| } else if (instr->IsOr()) { |
| __ Orr(dst, lhs, rhs); |
| } else if (instr->IsSub()) { |
| __ Sub(dst, lhs, rhs); |
| } else { |
| DCHECK(instr->IsXor()); |
| __ Eor(dst, lhs, rhs); |
| } |
| break; |
| } |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| FPRegister dst = OutputFPRegister(instr); |
| FPRegister lhs = InputFPRegisterAt(instr, 0); |
| FPRegister rhs = InputFPRegisterAt(instr, 1); |
| if (instr->IsAdd()) { |
| __ Fadd(dst, lhs, rhs); |
| } else if (instr->IsSub()) { |
| __ Fsub(dst, lhs, rhs); |
| } else { |
| LOG(FATAL) << "Unexpected floating-point binary operation"; |
| } |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unexpected binary operation type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::HandleShift(HBinaryOperation* instr) { |
| DCHECK(instr->IsShl() || instr->IsShr() || instr->IsUShr()); |
| |
| 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; |
| } |
| default: |
| LOG(FATAL) << "Unexpected shift type " << type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleShift(HBinaryOperation* instr) { |
| DCHECK(instr->IsShl() || instr->IsShr() || instr->IsUShr()); |
| |
| Primitive::Type type = instr->GetType(); |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| Register dst = OutputRegister(instr); |
| Register lhs = InputRegisterAt(instr, 0); |
| Operand rhs = InputOperandAt(instr, 1); |
| if (rhs.IsImmediate()) { |
| uint32_t shift_value = (type == Primitive::kPrimInt) |
| ? static_cast<uint32_t>(rhs.immediate() & kMaxIntShiftValue) |
| : static_cast<uint32_t>(rhs.immediate() & kMaxLongShiftValue); |
| if (instr->IsShl()) { |
| __ Lsl(dst, lhs, shift_value); |
| } else if (instr->IsShr()) { |
| __ Asr(dst, lhs, shift_value); |
| } else { |
| __ Lsr(dst, lhs, shift_value); |
| } |
| } else { |
| Register rhs_reg = dst.IsX() ? rhs.reg().X() : rhs.reg().W(); |
| |
| if (instr->IsShl()) { |
| __ Lsl(dst, lhs, rhs_reg); |
| } else if (instr->IsShr()) { |
| __ Asr(dst, lhs, rhs_reg); |
| } else { |
| __ Lsr(dst, lhs, rhs_reg); |
| } |
| } |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unexpected shift operation type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitAdd(HAdd* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitAdd(HAdd* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitAnd(HAnd* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitAnd(HAnd* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitArrayGet(HArrayGet* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| if (Primitive::IsFloatingPointType(instruction->GetType())) { |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| } else { |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitArrayGet(HArrayGet* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Primitive::Type type = instruction->GetType(); |
| Register obj = InputRegisterAt(instruction, 0); |
| Location index = locations->InAt(1); |
| size_t offset = mirror::Array::DataOffset(Primitive::ComponentSize(type)).Uint32Value(); |
| MemOperand source = HeapOperand(obj); |
| MacroAssembler* masm = GetVIXLAssembler(); |
| UseScratchRegisterScope temps(masm); |
| BlockPoolsScope block_pools(masm); |
| |
| if (index.IsConstant()) { |
| offset += Int64ConstantFrom(index) << Primitive::ComponentSizeShift(type); |
| source = HeapOperand(obj, offset); |
| } else { |
| Register temp = temps.AcquireSameSizeAs(obj); |
| __ Add(temp, obj, offset); |
| source = HeapOperand(temp, XRegisterFrom(index), LSL, Primitive::ComponentSizeShift(type)); |
| } |
| |
| codegen_->Load(type, OutputCPURegister(instruction), source); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| |
| if (type == Primitive::kPrimNot) { |
| GetAssembler()->MaybeUnpoisonHeapReference(OutputCPURegister(instruction).W()); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitArrayLength(HArrayLength* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitArrayLength(HArrayLength* instruction) { |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| __ Ldr(OutputRegister(instruction), |
| HeapOperand(InputRegisterAt(instruction, 0), mirror::Array::LengthOffset())); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitArraySet(HArraySet* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary( |
| instruction, |
| instruction->NeedsTypeCheck() ? LocationSummary::kCallOnSlowPath : LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(instruction->InputAt(1))); |
| if (Primitive::IsFloatingPointType(instruction->InputAt(2)->GetType())) { |
| locations->SetInAt(2, Location::RequiresFpuRegister()); |
| } else { |
| locations->SetInAt(2, Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitArraySet(HArraySet* instruction) { |
| Primitive::Type value_type = instruction->GetComponentType(); |
| LocationSummary* locations = instruction->GetLocations(); |
| bool may_need_runtime_call = locations->CanCall(); |
| bool needs_write_barrier = |
| CodeGenerator::StoreNeedsWriteBarrier(value_type, instruction->GetValue()); |
| |
| Register array = InputRegisterAt(instruction, 0); |
| CPURegister value = InputCPURegisterAt(instruction, 2); |
| CPURegister source = value; |
| Location index = locations->InAt(1); |
| size_t offset = mirror::Array::DataOffset(Primitive::ComponentSize(value_type)).Uint32Value(); |
| MemOperand destination = HeapOperand(array); |
| MacroAssembler* masm = GetVIXLAssembler(); |
| BlockPoolsScope block_pools(masm); |
| |
| if (!needs_write_barrier) { |
| DCHECK(!may_need_runtime_call); |
| if (index.IsConstant()) { |
| offset += Int64ConstantFrom(index) << Primitive::ComponentSizeShift(value_type); |
| destination = HeapOperand(array, offset); |
| } else { |
| UseScratchRegisterScope temps(masm); |
| Register temp = temps.AcquireSameSizeAs(array); |
| __ Add(temp, array, offset); |
| destination = HeapOperand(temp, |
| XRegisterFrom(index), |
| LSL, |
| Primitive::ComponentSizeShift(value_type)); |
| } |
| codegen_->Store(value_type, value, destination); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } else { |
| DCHECK(needs_write_barrier); |
| vixl::Label done; |
| SlowPathCodeARM64* slow_path = nullptr; |
| { |
| // We use a block to end the scratch scope before the write barrier, thus |
| // freeing the temporary registers so they can be used in `MarkGCCard`. |
| UseScratchRegisterScope temps(masm); |
| Register temp = temps.AcquireSameSizeAs(array); |
| if (index.IsConstant()) { |
| offset += Int64ConstantFrom(index) << Primitive::ComponentSizeShift(value_type); |
| destination = HeapOperand(array, offset); |
| } else { |
| destination = HeapOperand(temp, |
| XRegisterFrom(index), |
| LSL, |
| Primitive::ComponentSizeShift(value_type)); |
| } |
| |
| uint32_t class_offset = mirror::Object::ClassOffset().Int32Value(); |
| uint32_t super_offset = mirror::Class::SuperClassOffset().Int32Value(); |
| uint32_t component_offset = mirror::Class::ComponentTypeOffset().Int32Value(); |
| |
| if (may_need_runtime_call) { |
| slow_path = new (GetGraph()->GetArena()) ArraySetSlowPathARM64(instruction); |
| codegen_->AddSlowPath(slow_path); |
| if (instruction->GetValueCanBeNull()) { |
| vixl::Label non_zero; |
| __ Cbnz(Register(value), &non_zero); |
| if (!index.IsConstant()) { |
| __ Add(temp, array, offset); |
| } |
| __ Str(wzr, destination); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| __ B(&done); |
| __ Bind(&non_zero); |
| } |
| |
| Register temp2 = temps.AcquireSameSizeAs(array); |
| __ Ldr(temp, HeapOperand(array, class_offset)); |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| __ Ldr(temp, HeapOperand(temp, component_offset)); |
| __ Ldr(temp2, HeapOperand(Register(value), class_offset)); |
| // No need to poison/unpoison, we're comparing two poisoned references. |
| __ Cmp(temp, temp2); |
| if (instruction->StaticTypeOfArrayIsObjectArray()) { |
| vixl::Label do_put; |
| __ B(eq, &do_put); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| __ Ldr(temp, HeapOperand(temp, super_offset)); |
| // No need to unpoison, we're comparing against null. |
| __ Cbnz(temp, slow_path->GetEntryLabel()); |
| __ Bind(&do_put); |
| } else { |
| __ B(ne, slow_path->GetEntryLabel()); |
| } |
| temps.Release(temp2); |
| } |
| |
| if (kPoisonHeapReferences) { |
| Register temp2 = temps.AcquireSameSizeAs(array); |
| DCHECK(value.IsW()); |
| __ Mov(temp2, value.W()); |
| GetAssembler()->PoisonHeapReference(temp2); |
| source = temp2; |
| } |
| |
| if (!index.IsConstant()) { |
| __ Add(temp, array, offset); |
| } |
| __ Str(source, destination); |
| |
| if (!may_need_runtime_call) { |
| codegen_->MaybeRecordImplicitNullCheck(instruction); |
| } |
| } |
| |
| codegen_->MarkGCCard(array, value.W(), instruction->GetValueCanBeNull()); |
| |
| if (done.IsLinked()) { |
| __ Bind(&done); |
| } |
| |
| if (slow_path != nullptr) { |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitBoundsCheck(HBoundsCheck* instruction) { |
| LocationSummary::CallKind call_kind = instruction->CanThrowIntoCatchBlock() |
| ? LocationSummary::kCallOnSlowPath |
| : LocationSummary::kNoCall; |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, ARM64EncodableConstantOrRegister(instruction->InputAt(1), instruction)); |
| if (instruction->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitBoundsCheck(HBoundsCheck* instruction) { |
| BoundsCheckSlowPathARM64* slow_path = |
| new (GetGraph()->GetArena()) BoundsCheckSlowPathARM64(instruction); |
| codegen_->AddSlowPath(slow_path); |
| |
| __ Cmp(InputRegisterAt(instruction, 0), InputOperandAt(instruction, 1)); |
| __ B(slow_path->GetEntryLabel(), hs); |
| } |
| |
| void LocationsBuilderARM64::VisitClinitCheck(HClinitCheck* check) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(check, LocationSummary::kCallOnSlowPath); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if (check->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitClinitCheck(HClinitCheck* check) { |
| // We assume the class is not null. |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) LoadClassSlowPathARM64( |
| check->GetLoadClass(), check, check->GetDexPc(), true); |
| codegen_->AddSlowPath(slow_path); |
| GenerateClassInitializationCheck(slow_path, InputRegisterAt(check, 0)); |
| } |
| |
| static bool IsFloatingPointZeroConstant(HInstruction* instruction) { |
| return (instruction->IsFloatConstant() && (instruction->AsFloatConstant()->GetValue() == 0.0f)) |
| || (instruction->IsDoubleConstant() && (instruction->AsDoubleConstant()->GetValue() == 0.0)); |
| } |
| |
| void LocationsBuilderARM64::VisitCompare(HCompare* compare) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(compare, LocationSummary::kNoCall); |
| Primitive::Type in_type = compare->InputAt(0)->GetType(); |
| switch (in_type) { |
| case Primitive::kPrimLong: { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, ARM64EncodableConstantOrRegister(compare->InputAt(1), compare)); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| break; |
| } |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetInAt(1, |
| IsFloatingPointZeroConstant(compare->InputAt(1)) |
| ? Location::ConstantLocation(compare->InputAt(1)->AsConstant()) |
| : Location::RequiresFpuRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unexpected type for compare operation " << in_type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCompare(HCompare* compare) { |
| Primitive::Type in_type = compare->InputAt(0)->GetType(); |
| |
| // 0 if: left == right |
| // 1 if: left > right |
| // -1 if: left < right |
| switch (in_type) { |
| case Primitive::kPrimLong: { |
| Register result = OutputRegister(compare); |
| Register left = InputRegisterAt(compare, 0); |
| Operand right = InputOperandAt(compare, 1); |
| |
| __ Cmp(left, right); |
| __ Cset(result, ne); |
| __ Cneg(result, result, lt); |
| break; |
| } |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| Register result = OutputRegister(compare); |
| FPRegister left = InputFPRegisterAt(compare, 0); |
| if (compare->GetLocations()->InAt(1).IsConstant()) { |
| DCHECK(IsFloatingPointZeroConstant(compare->GetLocations()->InAt(1).GetConstant())); |
| // 0.0 is the only immediate that can be encoded directly in an FCMP instruction. |
| __ Fcmp(left, 0.0); |
| } else { |
| __ Fcmp(left, InputFPRegisterAt(compare, 1)); |
| } |
| if (compare->IsGtBias()) { |
| __ Cset(result, ne); |
| } else { |
| __ Csetm(result, ne); |
| } |
| __ Cneg(result, result, compare->IsGtBias() ? mi : gt); |
| break; |
| } |
| default: |
| LOG(FATAL) << "Unimplemented compare type " << in_type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitCondition(HCondition* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| |
| if (Primitive::IsFloatingPointType(instruction->InputAt(0)->GetType())) { |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetInAt(1, |
| IsFloatingPointZeroConstant(instruction->InputAt(1)) |
| ? Location::ConstantLocation(instruction->InputAt(1)->AsConstant()) |
| : Location::RequiresFpuRegister()); |
| } else { |
| // Integer cases. |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, ARM64EncodableConstantOrRegister(instruction->InputAt(1), instruction)); |
| } |
| |
| if (instruction->NeedsMaterialization()) { |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCondition(HCondition* instruction) { |
| if (!instruction->NeedsMaterialization()) { |
| return; |
| } |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Register res = RegisterFrom(locations->Out(), instruction->GetType()); |
| IfCondition if_cond = instruction->GetCondition(); |
| Condition arm64_cond = ARM64Condition(if_cond); |
| |
| if (Primitive::IsFloatingPointType(instruction->InputAt(0)->GetType())) { |
| FPRegister lhs = InputFPRegisterAt(instruction, 0); |
| if (locations->InAt(1).IsConstant()) { |
| DCHECK(IsFloatingPointZeroConstant(locations->InAt(1).GetConstant())); |
| // 0.0 is the only immediate that can be encoded directly in an FCMP instruction. |
| __ Fcmp(lhs, 0.0); |
| } else { |
| __ Fcmp(lhs, InputFPRegisterAt(instruction, 1)); |
| } |
| __ Cset(res, arm64_cond); |
| if (instruction->IsFPConditionTrueIfNaN()) { |
| // res = IsUnordered(arm64_cond) ? 1 : res <=> res = IsNotUnordered(arm64_cond) ? res : 1 |
| __ Csel(res, res, Operand(1), vc); // VC for "not unordered". |
| } else if (instruction->IsFPConditionFalseIfNaN()) { |
| // res = IsUnordered(arm64_cond) ? 0 : res <=> res = IsNotUnordered(arm64_cond) ? res : 0 |
| __ Csel(res, res, Operand(0), vc); // VC for "not unordered". |
| } |
| } else { |
| // Integer cases. |
| Register lhs = InputRegisterAt(instruction, 0); |
| Operand rhs = InputOperandAt(instruction, 1); |
| __ Cmp(lhs, rhs); |
| __ Cset(res, arm64_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 DEFINE_CONDITION_VISITORS |
| #undef FOR_EACH_CONDITION_INSTRUCTION |
| |
| void InstructionCodeGeneratorARM64::DivRemOneOrMinusOne(HBinaryOperation* instruction) { |
| DCHECK(instruction->IsDiv() || instruction->IsRem()); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location second = locations->InAt(1); |
| DCHECK(second.IsConstant()); |
| |
| Register out = OutputRegister(instruction); |
| Register dividend = InputRegisterAt(instruction, 0); |
| int64_t imm = Int64FromConstant(second.GetConstant()); |
| DCHECK(imm == 1 || imm == -1); |
| |
| if (instruction->IsRem()) { |
| __ Mov(out, 0); |
| } else { |
| if (imm == 1) { |
| __ Mov(out, dividend); |
| } else { |
| __ Neg(out, dividend); |
| } |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::DivRemByPowerOfTwo(HBinaryOperation* instruction) { |
| DCHECK(instruction->IsDiv() || instruction->IsRem()); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location second = locations->InAt(1); |
| DCHECK(second.IsConstant()); |
| |
| Register out = OutputRegister(instruction); |
| Register dividend = InputRegisterAt(instruction, 0); |
| int64_t imm = Int64FromConstant(second.GetConstant()); |
| uint64_t abs_imm = static_cast<uint64_t>(std::abs(imm)); |
| DCHECK(IsPowerOfTwo(abs_imm)); |
| int ctz_imm = CTZ(abs_imm); |
| |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp = temps.AcquireSameSizeAs(out); |
| |
| if (instruction->IsDiv()) { |
| __ Add(temp, dividend, abs_imm - 1); |
| __ Cmp(dividend, 0); |
| __ Csel(out, temp, dividend, lt); |
| if (imm > 0) { |
| __ Asr(out, out, ctz_imm); |
| } else { |
| __ Neg(out, Operand(out, ASR, ctz_imm)); |
| } |
| } else { |
| int bits = instruction->GetResultType() == Primitive::kPrimInt ? 32 : 64; |
| __ Asr(temp, dividend, bits - 1); |
| __ Lsr(temp, temp, bits - ctz_imm); |
| __ Add(out, dividend, temp); |
| __ And(out, out, abs_imm - 1); |
| __ Sub(out, out, temp); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateDivRemWithAnyConstant(HBinaryOperation* instruction) { |
| DCHECK(instruction->IsDiv() || instruction->IsRem()); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location second = locations->InAt(1); |
| DCHECK(second.IsConstant()); |
| |
| Register out = OutputRegister(instruction); |
| Register dividend = InputRegisterAt(instruction, 0); |
| int64_t imm = Int64FromConstant(second.GetConstant()); |
| |
| Primitive::Type type = instruction->GetResultType(); |
| DCHECK(type == Primitive::kPrimInt || type == Primitive::kPrimLong); |
| |
| int64_t magic; |
| int shift; |
| CalculateMagicAndShiftForDivRem(imm, type == Primitive::kPrimLong /* is_long */, &magic, &shift); |
| |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp = temps.AcquireSameSizeAs(out); |
| |
| // temp = get_high(dividend * magic) |
| __ Mov(temp, magic); |
| if (type == Primitive::kPrimLong) { |
| __ Smulh(temp, dividend, temp); |
| } else { |
| __ Smull(temp.X(), dividend, temp); |
| __ Lsr(temp.X(), temp.X(), 32); |
| } |
| |
| if (imm > 0 && magic < 0) { |
| __ Add(temp, temp, dividend); |
| } else if (imm < 0 && magic > 0) { |
| __ Sub(temp, temp, dividend); |
| } |
| |
| if (shift != 0) { |
| __ Asr(temp, temp, shift); |
| } |
| |
| if (instruction->IsDiv()) { |
| __ Sub(out, temp, Operand(temp, ASR, type == Primitive::kPrimLong ? 63 : 31)); |
| } else { |
| __ Sub(temp, temp, Operand(temp, ASR, type == Primitive::kPrimLong ? 63 : 31)); |
| // TODO: Strength reduction for msub. |
| Register temp_imm = temps.AcquireSameSizeAs(out); |
| __ Mov(temp_imm, imm); |
| __ Msub(out, temp, temp_imm, dividend); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateDivRemIntegral(HBinaryOperation* instruction) { |
| DCHECK(instruction->IsDiv() || instruction->IsRem()); |
| Primitive::Type type = instruction->GetResultType(); |
| DCHECK(type == Primitive::kPrimInt || Primitive::kPrimLong); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Register out = OutputRegister(instruction); |
| Location second = locations->InAt(1); |
| |
| if (second.IsConstant()) { |
| int64_t imm = Int64FromConstant(second.GetConstant()); |
| |
| if (imm == 0) { |
| // Do not generate anything. DivZeroCheck would prevent any code to be executed. |
| } else if (imm == 1 || imm == -1) { |
| DivRemOneOrMinusOne(instruction); |
| } else if (IsPowerOfTwo(std::abs(imm))) { |
| DivRemByPowerOfTwo(instruction); |
| } else { |
| DCHECK(imm <= -2 || imm >= 2); |
| GenerateDivRemWithAnyConstant(instruction); |
| } |
| } else { |
| Register dividend = InputRegisterAt(instruction, 0); |
| Register divisor = InputRegisterAt(instruction, 1); |
| if (instruction->IsDiv()) { |
| __ Sdiv(out, dividend, divisor); |
| } else { |
| UseScratchRegisterScope temps(GetVIXLAssembler()); |
| Register temp = temps.AcquireSameSizeAs(out); |
| __ Sdiv(temp, dividend, divisor); |
| __ Msub(out, temp, divisor, dividend); |
| } |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitDiv(HDiv* div) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(div, LocationSummary::kNoCall); |
| switch (div->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(div->InputAt(1))); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetInAt(1, Location::RequiresFpuRegister()); |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected div type " << div->GetResultType(); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitDiv(HDiv* div) { |
| Primitive::Type type = div->GetResultType(); |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| GenerateDivRemIntegral(div); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| __ Fdiv(OutputFPRegister(div), InputFPRegisterAt(div, 0), InputFPRegisterAt(div, 1)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected div type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitDivZeroCheck(HDivZeroCheck* instruction) { |
| LocationSummary::CallKind call_kind = instruction->CanThrowIntoCatchBlock() |
| ? LocationSummary::kCallOnSlowPath |
| : LocationSummary::kNoCall; |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind); |
| locations->SetInAt(0, Location::RegisterOrConstant(instruction->InputAt(0))); |
| if (instruction->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitDivZeroCheck(HDivZeroCheck* instruction) { |
| SlowPathCodeARM64* slow_path = |
| new (GetGraph()->GetArena()) DivZeroCheckSlowPathARM64(instruction); |
| codegen_->AddSlowPath(slow_path); |
| Location value = instruction->GetLocations()->InAt(0); |
| |
| Primitive::Type type = instruction->GetType(); |
| |
| if ((type == Primitive::kPrimBoolean) || !Primitive::IsIntegralType(type)) { |
| LOG(FATAL) << "Unexpected type " << type << " for DivZeroCheck."; |
| return; |
| } |
| |
| if (value.IsConstant()) { |
| int64_t divisor = Int64ConstantFrom(value); |
| if (divisor == 0) { |
| __ B(slow_path->GetEntryLabel()); |
| } else { |
| // A division by a non-null constant is valid. We don't need to perform |
| // any check, so simply fall through. |
| } |
| } else { |
| __ Cbz(InputRegisterAt(instruction, 0), slow_path->GetEntryLabel()); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitDoubleConstant(HDoubleConstant* constant) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(constant, LocationSummary::kNoCall); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitDoubleConstant(HDoubleConstant* constant) { |
| UNUSED(constant); |
| // Will be generated at use site. |
| } |
| |
| void LocationsBuilderARM64::VisitExit(HExit* exit) { |
| exit->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitExit(HExit* exit) { |
| UNUSED(exit); |
| } |
| |
| void LocationsBuilderARM64::VisitFloatConstant(HFloatConstant* constant) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(constant, LocationSummary::kNoCall); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitFloatConstant(HFloatConstant* constant) { |
| UNUSED(constant); |
| // Will be generated at use site. |
| } |
| |
| void InstructionCodeGeneratorARM64::HandleGoto(HInstruction* got, HBasicBlock* successor) { |
| DCHECK(!successor->IsExitBlock()); |
| HBasicBlock* block = got->GetBlock(); |
| HInstruction* previous = got->GetPrevious(); |
| HLoopInformation* info = block->GetLoopInformation(); |
| |
| if (info != nullptr && info->IsBackEdge(*block) && info->HasSuspendCheck()) { |
| codegen_->ClearSpillSlotsFromLoopPhisInStackMap(info->GetSuspendCheck()); |
| GenerateSuspendCheck(info->GetSuspendCheck(), successor); |
| return; |
| } |
| if (block->IsEntryBlock() && (previous != nullptr) && previous->IsSuspendCheck()) { |
| GenerateSuspendCheck(previous->AsSuspendCheck(), nullptr); |
| } |
| if (!codegen_->GoesToNextBlock(block, successor)) { |
| __ B(codegen_->GetLabelOf(successor)); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitGoto(HGoto* got) { |
| got->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitGoto(HGoto* got) { |
| HandleGoto(got, got->GetSuccessor()); |
| } |
| |
| void LocationsBuilderARM64::VisitTryBoundary(HTryBoundary* try_boundary) { |
| try_boundary->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitTryBoundary(HTryBoundary* try_boundary) { |
| HBasicBlock* successor = try_boundary->GetNormalFlowSuccessor(); |
| if (!successor->IsExitBlock()) { |
| HandleGoto(try_boundary, successor); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateTestAndBranch(HInstruction* instruction, |
| vixl::Label* true_target, |
| vixl::Label* false_target, |
| vixl::Label* always_true_target) { |
| HInstruction* cond = instruction->InputAt(0); |
| HCondition* condition = cond->AsCondition(); |
| |
| if (cond->IsIntConstant()) { |
| int32_t cond_value = cond->AsIntConstant()->GetValue(); |
| if (cond_value == 1) { |
| if (always_true_target != nullptr) { |
| __ B(always_true_target); |
| } |
| return; |
| } else { |
| DCHECK_EQ(cond_value, 0); |
| } |
| } else if (!cond->IsCondition() || condition->NeedsMaterialization()) { |
| // The condition instruction has been materialized, compare the output to 0. |
| Location cond_val = instruction->GetLocations()->InAt(0); |
| DCHECK(cond_val.IsRegister()); |
| __ Cbnz(InputRegisterAt(instruction, 0), true_target); |
| } else { |
| // The condition instruction has not been materialized, use its inputs as |
| // the comparison and its condition as the branch condition. |
| Primitive::Type type = |
| cond->IsCondition() ? cond->InputAt(0)->GetType() : Primitive::kPrimInt; |
| |
| if (Primitive::IsFloatingPointType(type)) { |
| // FP compares don't like null false_targets. |
| if (false_target == nullptr) { |
| false_target = codegen_->GetLabelOf(instruction->AsIf()->IfFalseSuccessor()); |
| } |
| FPRegister lhs = InputFPRegisterAt(condition, 0); |
| if (condition->GetLocations()->InAt(1).IsConstant()) { |
| DCHECK(IsFloatingPointZeroConstant(condition->GetLocations()->InAt(1).GetConstant())); |
| // 0.0 is the only immediate that can be encoded directly in an FCMP instruction. |
| __ Fcmp(lhs, 0.0); |
| } else { |
| __ Fcmp(lhs, InputFPRegisterAt(condition, 1)); |
| } |
| if (condition->IsFPConditionTrueIfNaN()) { |
| __ B(vs, true_target); // VS for unordered. |
| } else if (condition->IsFPConditionFalseIfNaN()) { |
| __ B(vs, false_target); // VS for unordered. |
| } |
| __ B(ARM64Condition(condition->GetCondition()), true_target); |
| } else { |
| // Integer cases. |
| Register lhs = InputRegisterAt(condition, 0); |
| Operand rhs = InputOperandAt(condition, 1); |
| Condition arm64_cond = ARM64Condition(condition->GetCondition()); |
| if ((arm64_cond != gt && arm64_cond != le) && rhs.IsImmediate() && (rhs.immediate() == 0)) { |
| switch (arm64_cond) { |
| case eq: |
| __ Cbz(lhs, true_target); |
| break; |
| case ne: |
| __ Cbnz(lhs, true_target); |
| break; |
| case lt: |
| // Test the sign bit and branch accordingly. |
| __ Tbnz(lhs, (lhs.IsX() ? kXRegSize : kWRegSize) - 1, true_target); |
| break; |
| case ge: |
| // Test the sign bit and branch accordingly. |
| __ Tbz(lhs, (lhs.IsX() ? kXRegSize : kWRegSize) - 1, true_target); |
| break; |
| default: |
| // Without the `static_cast` the compiler throws an error for |
| // `-Werror=sign-promo`. |
| LOG(FATAL) << "Unexpected condition: " << static_cast<int>(arm64_cond); |
| } |
| } else { |
| __ Cmp(lhs, rhs); |
| __ B(arm64_cond, true_target); |
| } |
| } |
| } |
| if (false_target != nullptr) { |
| __ B(false_target); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitIf(HIf* if_instr) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(if_instr); |
| HInstruction* cond = if_instr->InputAt(0); |
| if (!cond->IsCondition() || cond->AsCondition()->NeedsMaterialization()) { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitIf(HIf* if_instr) { |
| vixl::Label* true_target = codegen_->GetLabelOf(if_instr->IfTrueSuccessor()); |
| vixl::Label* false_target = codegen_->GetLabelOf(if_instr->IfFalseSuccessor()); |
| vixl::Label* always_true_target = true_target; |
| if (codegen_->GoesToNextBlock(if_instr->GetBlock(), |
| if_instr->IfTrueSuccessor())) { |
| always_true_target = nullptr; |
| } |
| if (codegen_->GoesToNextBlock(if_instr->GetBlock(), |
| if_instr->IfFalseSuccessor())) { |
| false_target = nullptr; |
| } |
| GenerateTestAndBranch(if_instr, true_target, false_target, always_true_target); |
| } |
| |
| void LocationsBuilderARM64::VisitDeoptimize(HDeoptimize* deoptimize) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) |
| LocationSummary(deoptimize, LocationSummary::kCallOnSlowPath); |
| HInstruction* cond = deoptimize->InputAt(0); |
| DCHECK(cond->IsCondition()); |
| if (cond->AsCondition()->NeedsMaterialization()) { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitDeoptimize(HDeoptimize* deoptimize) { |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) |
| DeoptimizationSlowPathARM64(deoptimize); |
| codegen_->AddSlowPath(slow_path); |
| vixl::Label* slow_path_entry = slow_path->GetEntryLabel(); |
| GenerateTestAndBranch(deoptimize, slow_path_entry, nullptr, slow_path_entry); |
| } |
| |
| void LocationsBuilderARM64::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| HandleFieldGet(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInstanceFieldGet(HInstanceFieldGet* instruction) { |
| HandleFieldGet(instruction, instruction->GetFieldInfo()); |
| } |
| |
| void LocationsBuilderARM64::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| HandleFieldSet(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInstanceFieldSet(HInstanceFieldSet* instruction) { |
| HandleFieldSet(instruction, instruction->GetFieldInfo(), instruction->GetValueCanBeNull()); |
| } |
| |
| void LocationsBuilderARM64::VisitInstanceOf(HInstanceOf* instruction) { |
| LocationSummary::CallKind call_kind = LocationSummary::kNoCall; |
| switch (instruction->GetTypeCheckKind()) { |
| case TypeCheckKind::kExactCheck: |
| case TypeCheckKind::kAbstractClassCheck: |
| case TypeCheckKind::kClassHierarchyCheck: |
| case TypeCheckKind::kArrayObjectCheck: |
| call_kind = LocationSummary::kNoCall; |
| break; |
| case TypeCheckKind::kUnresolvedCheck: |
| case TypeCheckKind::kInterfaceCheck: |
| call_kind = LocationSummary::kCall; |
| break; |
| case TypeCheckKind::kArrayCheck: |
| call_kind = LocationSummary::kCallOnSlowPath; |
| break; |
| } |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind); |
| if (call_kind != LocationSummary::kCall) { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| // The out register is used as a temporary, so it overlaps with the inputs. |
| // Note that TypeCheckSlowPathARM64 uses this register too. |
| locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap); |
| } else { |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(1, LocationFrom(calling_convention.GetRegisterAt(0))); |
| locations->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(1))); |
| locations->SetOut(calling_convention.GetReturnLocation(Primitive::kPrimInt)); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInstanceOf(HInstanceOf* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = InputRegisterAt(instruction, 0); |
| Register cls = InputRegisterAt(instruction, 1); |
| Register out = OutputRegister(instruction); |
| uint32_t class_offset = mirror::Object::ClassOffset().Int32Value(); |
| uint32_t super_offset = mirror::Class::SuperClassOffset().Int32Value(); |
| uint32_t component_offset = mirror::Class::ComponentTypeOffset().Int32Value(); |
| uint32_t primitive_offset = mirror::Class::PrimitiveTypeOffset().Int32Value(); |
| |
| vixl::Label done, zero; |
| SlowPathCodeARM64* slow_path = nullptr; |
| |
| // Return 0 if `obj` is null. |
| // Avoid null check if we know `obj` is not null. |
| if (instruction->MustDoNullCheck()) { |
| __ Cbz(obj, &zero); |
| } |
| |
| // In case of an interface/unresolved check, we put the object class into the object register. |
| // This is safe, as the register is caller-save, and the object must be in another |
| // register if it survives the runtime call. |
| Register target = (instruction->GetTypeCheckKind() == TypeCheckKind::kInterfaceCheck) || |
| (instruction->GetTypeCheckKind() == TypeCheckKind::kUnresolvedCheck) |
| ? obj |
| : out; |
| __ Ldr(target, HeapOperand(obj.W(), class_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(target); |
| |
| switch (instruction->GetTypeCheckKind()) { |
| case TypeCheckKind::kExactCheck: { |
| __ Cmp(out, cls); |
| __ Cset(out, eq); |
| if (zero.IsLinked()) { |
| __ B(&done); |
| } |
| break; |
| } |
| case TypeCheckKind::kAbstractClassCheck: { |
| // If the class is abstract, we eagerly fetch the super class of the |
| // object to avoid doing a comparison we know will fail. |
| vixl::Label loop, success; |
| __ Bind(&loop); |
| __ Ldr(out, HeapOperand(out, super_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(out); |
| // If `out` is null, we use it for the result, and jump to `done`. |
| __ Cbz(out, &done); |
| __ Cmp(out, cls); |
| __ B(ne, &loop); |
| __ Mov(out, 1); |
| if (zero.IsLinked()) { |
| __ B(&done); |
| } |
| break; |
| } |
| case TypeCheckKind::kClassHierarchyCheck: { |
| // Walk over the class hierarchy to find a match. |
| vixl::Label loop, success; |
| __ Bind(&loop); |
| __ Cmp(out, cls); |
| __ B(eq, &success); |
| __ Ldr(out, HeapOperand(out, super_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(out); |
| __ Cbnz(out, &loop); |
| // If `out` is null, we use it for the result, and jump to `done`. |
| __ B(&done); |
| __ Bind(&success); |
| __ Mov(out, 1); |
| if (zero.IsLinked()) { |
| __ B(&done); |
| } |
| break; |
| } |
| case TypeCheckKind::kArrayObjectCheck: { |
| // Do an exact check. |
| vixl::Label exact_check; |
| __ Cmp(out, cls); |
| __ B(eq, &exact_check); |
| // Otherwise, we need to check that the object's class is a non primitive array. |
| __ Ldr(out, HeapOperand(out, component_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(out); |
| // If `out` is null, we use it for the result, and jump to `done`. |
| __ Cbz(out, &done); |
| __ Ldrh(out, HeapOperand(out, primitive_offset)); |
| static_assert(Primitive::kPrimNot == 0, "Expected 0 for kPrimNot"); |
| __ Cbnz(out, &zero); |
| __ Bind(&exact_check); |
| __ Mov(out, 1); |
| __ B(&done); |
| break; |
| } |
| case TypeCheckKind::kArrayCheck: { |
| __ Cmp(out, cls); |
| DCHECK(locations->OnlyCallsOnSlowPath()); |
| slow_path = new (GetGraph()->GetArena()) TypeCheckSlowPathARM64( |
| instruction, /* is_fatal */ false); |
| codegen_->AddSlowPath(slow_path); |
| __ B(ne, slow_path->GetEntryLabel()); |
| __ Mov(out, 1); |
| if (zero.IsLinked()) { |
| __ B(&done); |
| } |
| break; |
| } |
| case TypeCheckKind::kUnresolvedCheck: |
| case TypeCheckKind::kInterfaceCheck: |
| default: { |
| codegen_->InvokeRuntime(QUICK_ENTRY_POINT(pInstanceofNonTrivial), |
| instruction, |
| instruction->GetDexPc(), |
| nullptr); |
| if (zero.IsLinked()) { |
| __ B(&done); |
| } |
| break; |
| } |
| } |
| |
| if (zero.IsLinked()) { |
| __ Bind(&zero); |
| __ Mov(out, 0); |
| } |
| |
| if (done.IsLinked()) { |
| __ Bind(&done); |
| } |
| |
| if (slow_path != nullptr) { |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitCheckCast(HCheckCast* instruction) { |
| LocationSummary::CallKind call_kind = LocationSummary::kNoCall; |
| bool throws_into_catch = instruction->CanThrowIntoCatchBlock(); |
| |
| switch (instruction->GetTypeCheckKind()) { |
| case TypeCheckKind::kExactCheck: |
| case TypeCheckKind::kAbstractClassCheck: |
| case TypeCheckKind::kClassHierarchyCheck: |
| case TypeCheckKind::kArrayObjectCheck: |
| call_kind = throws_into_catch |
| ? LocationSummary::kCallOnSlowPath |
| : LocationSummary::kNoCall; |
| break; |
| case TypeCheckKind::kUnresolvedCheck: |
| case TypeCheckKind::kInterfaceCheck: |
| call_kind = LocationSummary::kCall; |
| break; |
| case TypeCheckKind::kArrayCheck: |
| call_kind = LocationSummary::kCallOnSlowPath; |
| break; |
| } |
| |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary( |
| instruction, call_kind); |
| if (call_kind != LocationSummary::kCall) { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RequiresRegister()); |
| // Note that TypeCheckSlowPathARM64 uses this register too. |
| locations->AddTemp(Location::RequiresRegister()); |
| } else { |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(1, LocationFrom(calling_convention.GetRegisterAt(0))); |
| locations->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(1))); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCheckCast(HCheckCast* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register obj = InputRegisterAt(instruction, 0); |
| Register cls = InputRegisterAt(instruction, 1); |
| Register temp; |
| if (!locations->WillCall()) { |
| temp = WRegisterFrom(instruction->GetLocations()->GetTemp(0)); |
| } |
| |
| uint32_t class_offset = mirror::Object::ClassOffset().Int32Value(); |
| uint32_t super_offset = mirror::Class::SuperClassOffset().Int32Value(); |
| uint32_t component_offset = mirror::Class::ComponentTypeOffset().Int32Value(); |
| uint32_t primitive_offset = mirror::Class::PrimitiveTypeOffset().Int32Value(); |
| SlowPathCodeARM64* slow_path = nullptr; |
| |
| if (!locations->WillCall()) { |
| slow_path = new (GetGraph()->GetArena()) TypeCheckSlowPathARM64( |
| instruction, !locations->CanCall()); |
| codegen_->AddSlowPath(slow_path); |
| } |
| |
| vixl::Label done; |
| // Avoid null check if we know obj is not null. |
| if (instruction->MustDoNullCheck()) { |
| __ Cbz(obj, &done); |
| } |
| |
| if (locations->WillCall()) { |
| __ Ldr(obj, HeapOperand(obj, class_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(obj); |
| } else { |
| __ Ldr(temp, HeapOperand(obj, class_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| } |
| |
| switch (instruction->GetTypeCheckKind()) { |
| case TypeCheckKind::kExactCheck: |
| case TypeCheckKind::kArrayCheck: { |
| __ Cmp(temp, cls); |
| // Jump to slow path for throwing the exception or doing a |
| // more involved array check. |
| __ B(ne, slow_path->GetEntryLabel()); |
| break; |
| } |
| case TypeCheckKind::kAbstractClassCheck: { |
| // If the class is abstract, we eagerly fetch the super class of the |
| // object to avoid doing a comparison we know will fail. |
| vixl::Label loop; |
| __ Bind(&loop); |
| __ Ldr(temp, HeapOperand(temp, super_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| // Jump to the slow path to throw the exception. |
| __ Cbz(temp, slow_path->GetEntryLabel()); |
| __ Cmp(temp, cls); |
| __ B(ne, &loop); |
| break; |
| } |
| case TypeCheckKind::kClassHierarchyCheck: { |
| // Walk over the class hierarchy to find a match. |
| vixl::Label loop; |
| __ Bind(&loop); |
| __ Cmp(temp, cls); |
| __ B(eq, &done); |
| __ Ldr(temp, HeapOperand(temp, super_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| __ Cbnz(temp, &loop); |
| // Jump to the slow path to throw the exception. |
| __ B(slow_path->GetEntryLabel()); |
| break; |
| } |
| case TypeCheckKind::kArrayObjectCheck: { |
| // Do an exact check. |
| __ Cmp(temp, cls); |
| __ B(eq, &done); |
| // Otherwise, we need to check that the object's class is a non primitive array. |
| __ Ldr(temp, HeapOperand(temp, component_offset)); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp); |
| __ Cbz(temp, slow_path->GetEntryLabel()); |
| __ Ldrh(temp, HeapOperand(temp, primitive_offset)); |
| static_assert(Primitive::kPrimNot == 0, "Expected 0 for kPrimNot"); |
| __ Cbnz(temp, slow_path->GetEntryLabel()); |
| break; |
| } |
| case TypeCheckKind::kUnresolvedCheck: |
| case TypeCheckKind::kInterfaceCheck: |
| default: |
| codegen_->InvokeRuntime(QUICK_ENTRY_POINT(pCheckCast), |
| instruction, |
| instruction->GetDexPc(), |
| nullptr); |
| break; |
| } |
| __ Bind(&done); |
| |
| if (slow_path != nullptr) { |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| } |
| |
| 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. |
| UNUSED(constant); |
| } |
| |
| void LocationsBuilderARM64::VisitNullConstant(HNullConstant* constant) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant); |
| locations->SetOut(Location::ConstantLocation(constant)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNullConstant(HNullConstant* constant) { |
| // Will be generated at use site. |
| UNUSED(constant); |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeUnresolved(HInvokeUnresolved* invoke) { |
| // The trampoline uses the same calling convention as dex calling conventions, |
| // except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain |
| // the method_idx. |
| HandleInvoke(invoke); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeUnresolved(HInvokeUnresolved* invoke) { |
| codegen_->GenerateInvokeUnresolvedRuntimeCall(invoke); |
| } |
| |
| void LocationsBuilderARM64::HandleInvoke(HInvoke* invoke) { |
| InvokeDexCallingConventionVisitorARM64 calling_convention_visitor; |
| CodeGenerator::CreateCommonInvokeLocationSummary(invoke, &calling_convention_visitor); |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeInterface(HInvokeInterface* invoke) { |
| HandleInvoke(invoke); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeInterface(HInvokeInterface* invoke) { |
| // TODO: b/18116999, our IMTs can miss an IncompatibleClassChangeError. |
| Register temp = XRegisterFrom(invoke->GetLocations()->GetTemp(0)); |
| uint32_t method_offset = mirror::Class::EmbeddedImTableEntryOffset( |
| invoke->GetImtIndex() % mirror::Class::kImtSize, kArm64PointerSize).Uint32Value(); |
| Location receiver = invoke->GetLocations()->InAt(0); |
| Offset class_offset = mirror::Object::ClassOffset(); |
| Offset entry_point = ArtMethod::EntryPointFromQuickCompiledCodeOffset(kArm64WordSize); |
| |
| // The register ip1 is required to be used for the hidden argument in |
| // art_quick_imt_conflict_trampoline, so prevent VIXL from using it. |
| MacroAssembler* masm = GetVIXLAssembler(); |
| UseScratchRegisterScope scratch_scope(masm); |
| BlockPoolsScope block_pools(masm); |
| scratch_scope.Exclude(ip1); |
| __ Mov(ip1, invoke->GetDexMethodIndex()); |
| |
| // temp = object->GetClass(); |
| if (receiver.IsStackSlot()) { |
| __ Ldr(temp.W(), StackOperandFrom(receiver)); |
| __ Ldr(temp.W(), HeapOperand(temp.W(), class_offset)); |
| } else { |
| __ Ldr(temp.W(), HeapOperandFrom(receiver, class_offset)); |
| } |
| codegen_->MaybeRecordImplicitNullCheck(invoke); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp.W()); |
| // temp = temp->GetImtEntryAt(method_offset); |
| __ Ldr(temp, MemOperand(temp, method_offset)); |
| // lr = temp->GetEntryPoint(); |
| __ Ldr(lr, MemOperand(temp, entry_point.Int32Value())); |
| // lr(); |
| __ Blr(lr); |
| DCHECK(!codegen_->IsLeafMethod()); |
| codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeVirtual(HInvokeVirtual* invoke) { |
| IntrinsicLocationsBuilderARM64 intrinsic(GetGraph()->GetArena()); |
| if (intrinsic.TryDispatch(invoke)) { |
| return; |
| } |
| |
| HandleInvoke(invoke); |
| } |
| |
| void LocationsBuilderARM64::VisitInvokeStaticOrDirect(HInvokeStaticOrDirect* invoke) { |
| // When we do not run baseline, explicit clinit checks triggered by static |
| // invokes must have been pruned by art::PrepareForRegisterAllocation. |
| DCHECK(codegen_->IsBaseline() || !invoke->IsStaticWithExplicitClinitCheck()); |
| |
| IntrinsicLocationsBuilderARM64 intrinsic(GetGraph()->GetArena()); |
| if (intrinsic.TryDispatch(invoke)) { |
| return; |
| } |
| |
| HandleInvoke(invoke); |
| } |
| |
| static bool TryGenerateIntrinsicCode(HInvoke* invoke, CodeGeneratorARM64* codegen) { |
| if (invoke->GetLocations()->Intrinsified()) { |
| IntrinsicCodeGeneratorARM64 intrinsic(codegen); |
| intrinsic.Dispatch(invoke); |
| return true; |
| } |
| return false; |
| } |
| |
| void CodeGeneratorARM64::GenerateStaticOrDirectCall(HInvokeStaticOrDirect* invoke, Location temp) { |
| // For better instruction scheduling we load the direct code pointer before the method pointer. |
| bool direct_code_loaded = false; |
| switch (invoke->GetCodePtrLocation()) { |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallDirectWithFixup: |
| // LR = code address from literal pool with link-time patch. |
| __ Ldr(lr, DeduplicateMethodCodeLiteral(invoke->GetTargetMethod())); |
| direct_code_loaded = true; |
| break; |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallDirect: |
| // LR = invoke->GetDirectCodePtr(); |
| __ Ldr(lr, DeduplicateUint64Literal(invoke->GetDirectCodePtr())); |
| direct_code_loaded = true; |
| break; |
| default: |
| break; |
| } |
| |
| // Make sure that ArtMethod* is passed in kArtMethodRegister as per the calling convention. |
| Location callee_method = temp; // For all kinds except kRecursive, callee will be in temp. |
| switch (invoke->GetMethodLoadKind()) { |
| case HInvokeStaticOrDirect::MethodLoadKind::kStringInit: |
| // temp = thread->string_init_entrypoint |
| __ Ldr(XRegisterFrom(temp).X(), MemOperand(tr, invoke->GetStringInitOffset())); |
| break; |
| case HInvokeStaticOrDirect::MethodLoadKind::kRecursive: |
| callee_method = invoke->GetLocations()->InAt(invoke->GetCurrentMethodInputIndex()); |
| break; |
| case HInvokeStaticOrDirect::MethodLoadKind::kDirectAddress: |
| // Load method address from literal pool. |
| __ Ldr(XRegisterFrom(temp).X(), DeduplicateUint64Literal(invoke->GetMethodAddress())); |
| break; |
| case HInvokeStaticOrDirect::MethodLoadKind::kDirectAddressWithFixup: |
| // Load method address from literal pool with a link-time patch. |
| __ Ldr(XRegisterFrom(temp).X(), |
| DeduplicateMethodAddressLiteral(invoke->GetTargetMethod())); |
| break; |
| case HInvokeStaticOrDirect::MethodLoadKind::kDexCachePcRelative: { |
| // Add ADRP with its PC-relative DexCache access patch. |
| pc_rel_dex_cache_patches_.emplace_back(*invoke->GetTargetMethod().dex_file, |
| invoke->GetDexCacheArrayOffset()); |
| vixl::Label* pc_insn_label = &pc_rel_dex_cache_patches_.back().label; |
| { |
| vixl::SingleEmissionCheckScope guard(GetVIXLAssembler()); |
| __ adrp(XRegisterFrom(temp).X(), 0); |
| } |
| __ Bind(pc_insn_label); // Bind after ADRP. |
| pc_rel_dex_cache_patches_.back().pc_insn_label = pc_insn_label; |
| // Add LDR with its PC-relative DexCache access patch. |
| pc_rel_dex_cache_patches_.emplace_back(*invoke->GetTargetMethod().dex_file, |
| invoke->GetDexCacheArrayOffset()); |
| __ Ldr(XRegisterFrom(temp).X(), MemOperand(XRegisterFrom(temp).X(), 0)); |
| __ Bind(&pc_rel_dex_cache_patches_.back().label); // Bind after LDR. |
| pc_rel_dex_cache_patches_.back().pc_insn_label = pc_insn_label; |
| break; |
| } |
| case HInvokeStaticOrDirect::MethodLoadKind::kDexCacheViaMethod: { |
| Location current_method = invoke->GetLocations()->InAt(invoke->GetCurrentMethodInputIndex()); |
| Register reg = XRegisterFrom(temp); |
| Register method_reg; |
| if (current_method.IsRegister()) { |
| method_reg = XRegisterFrom(current_method); |
| } else { |
| DCHECK(invoke->GetLocations()->Intrinsified()); |
| DCHECK(!current_method.IsValid()); |
| method_reg = reg; |
| __ Ldr(reg.X(), MemOperand(sp, kCurrentMethodStackOffset)); |
| } |
| |
| // temp = current_method->dex_cache_resolved_methods_; |
| __ Ldr(reg.X(), |
| MemOperand(method_reg.X(), |
| ArtMethod::DexCacheResolvedMethodsOffset(kArm64WordSize).Int32Value())); |
| // temp = temp[index_in_cache]; |
| uint32_t index_in_cache = invoke->GetTargetMethod().dex_method_index; |
| __ Ldr(reg.X(), MemOperand(reg.X(), GetCachePointerOffset(index_in_cache))); |
| break; |
| } |
| } |
| |
| switch (invoke->GetCodePtrLocation()) { |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallSelf: |
| __ Bl(&frame_entry_label_); |
| break; |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallPCRelative: { |
| relative_call_patches_.emplace_back(invoke->GetTargetMethod()); |
| vixl::Label* label = &relative_call_patches_.back().label; |
| __ Bl(label); // Arbitrarily branch to the instruction after BL, override at link time. |
| __ Bind(label); // Bind after BL. |
| break; |
| } |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallDirectWithFixup: |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallDirect: |
| // LR prepared above for better instruction scheduling. |
| DCHECK(direct_code_loaded); |
| // lr() |
| __ Blr(lr); |
| break; |
| case HInvokeStaticOrDirect::CodePtrLocation::kCallArtMethod: |
| // LR = callee_method->entry_point_from_quick_compiled_code_; |
| __ Ldr(lr, MemOperand( |
| XRegisterFrom(callee_method).X(), |
| ArtMethod::EntryPointFromQuickCompiledCodeOffset(kArm64WordSize).Int32Value())); |
| // lr() |
| __ Blr(lr); |
| break; |
| } |
| |
| DCHECK(!IsLeafMethod()); |
| } |
| |
| void CodeGeneratorARM64::GenerateVirtualCall(HInvokeVirtual* invoke, Location temp_in) { |
| LocationSummary* locations = invoke->GetLocations(); |
| Location receiver = locations->InAt(0); |
| Register temp = XRegisterFrom(temp_in); |
| size_t method_offset = mirror::Class::EmbeddedVTableEntryOffset( |
| invoke->GetVTableIndex(), kArm64PointerSize).SizeValue(); |
| Offset class_offset = mirror::Object::ClassOffset(); |
| Offset entry_point = ArtMethod::EntryPointFromQuickCompiledCodeOffset(kArm64WordSize); |
| |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| |
| DCHECK(receiver.IsRegister()); |
| __ Ldr(temp.W(), HeapOperandFrom(receiver, class_offset)); |
| MaybeRecordImplicitNullCheck(invoke); |
| GetAssembler()->MaybeUnpoisonHeapReference(temp.W()); |
| // temp = temp->GetMethodAt(method_offset); |
| __ Ldr(temp, MemOperand(temp, method_offset)); |
| // lr = temp->GetEntryPoint(); |
| __ Ldr(lr, MemOperand(temp, entry_point.SizeValue())); |
| // lr(); |
| __ Blr(lr); |
| } |
| |
| void CodeGeneratorARM64::EmitLinkerPatches(ArenaVector<LinkerPatch>* linker_patches) { |
| DCHECK(linker_patches->empty()); |
| size_t size = |
| method_patches_.size() + |
| call_patches_.size() + |
| relative_call_patches_.size() + |
| pc_rel_dex_cache_patches_.size(); |
| linker_patches->reserve(size); |
| for (const auto& entry : method_patches_) { |
| const MethodReference& target_method = entry.first; |
| vixl::Literal<uint64_t>* literal = entry.second; |
| linker_patches->push_back(LinkerPatch::MethodPatch(literal->offset(), |
| target_method.dex_file, |
| target_method.dex_method_index)); |
| } |
| for (const auto& entry : call_patches_) { |
| const MethodReference& target_method = entry.first; |
| vixl::Literal<uint64_t>* literal = entry.second; |
| linker_patches->push_back(LinkerPatch::CodePatch(literal->offset(), |
| target_method.dex_file, |
| target_method.dex_method_index)); |
| } |
| for (const MethodPatchInfo<vixl::Label>& info : relative_call_patches_) { |
| linker_patches->push_back(LinkerPatch::RelativeCodePatch(info.label.location() - 4u, |
| info.target_method.dex_file, |
| info.target_method.dex_method_index)); |
| } |
| for (const PcRelativeDexCacheAccessInfo& info : pc_rel_dex_cache_patches_) { |
| linker_patches->push_back(LinkerPatch::DexCacheArrayPatch(info.label.location() - 4u, |
| &info.target_dex_file, |
| info.pc_insn_label->location() - 4u, |
| info.element_offset)); |
| } |
| } |
| |
| vixl::Literal<uint64_t>* CodeGeneratorARM64::DeduplicateUint64Literal(uint64_t value) { |
| // Look up the literal for value. |
| auto lb = uint64_literals_.lower_bound(value); |
| if (lb != uint64_literals_.end() && !uint64_literals_.key_comp()(value, lb->first)) { |
| return lb->second; |
| } |
| // We don't have a literal for this value, insert a new one. |
| vixl::Literal<uint64_t>* literal = __ CreateLiteralDestroyedWithPool<uint64_t>(value); |
| uint64_literals_.PutBefore(lb, value, literal); |
| return literal; |
| } |
| |
| vixl::Literal<uint64_t>* CodeGeneratorARM64::DeduplicateMethodLiteral( |
| MethodReference target_method, |
| MethodToLiteralMap* map) { |
| // Look up the literal for target_method. |
| auto lb = map->lower_bound(target_method); |
| if (lb != map->end() && !map->key_comp()(target_method, lb->first)) { |
| return lb->second; |
| } |
| // We don't have a literal for this method yet, insert a new one. |
| vixl::Literal<uint64_t>* literal = __ CreateLiteralDestroyedWithPool<uint64_t>(0u); |
| map->PutBefore(lb, target_method, literal); |
| return literal; |
| } |
| |
| vixl::Literal<uint64_t>* CodeGeneratorARM64::DeduplicateMethodAddressLiteral( |
| MethodReference target_method) { |
| return DeduplicateMethodLiteral(target_method, &method_patches_); |
| } |
| |
| vixl::Literal<uint64_t>* CodeGeneratorARM64::DeduplicateMethodCodeLiteral( |
| MethodReference target_method) { |
| return DeduplicateMethodLiteral(target_method, &call_patches_); |
| } |
| |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeStaticOrDirect(HInvokeStaticOrDirect* invoke) { |
| // When we do not run baseline, explicit clinit checks triggered by static |
| // invokes must have been pruned by art::PrepareForRegisterAllocation. |
| DCHECK(codegen_->IsBaseline() || !invoke->IsStaticWithExplicitClinitCheck()); |
| |
| if (TryGenerateIntrinsicCode(invoke, codegen_)) { |
| return; |
| } |
| |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| LocationSummary* locations = invoke->GetLocations(); |
| codegen_->GenerateStaticOrDirectCall( |
| invoke, locations->HasTemps() ? locations->GetTemp(0) : Location::NoLocation()); |
| codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitInvokeVirtual(HInvokeVirtual* invoke) { |
| if (TryGenerateIntrinsicCode(invoke, codegen_)) { |
| return; |
| } |
| |
| codegen_->GenerateVirtualCall(invoke, invoke->GetLocations()->GetTemp(0)); |
| DCHECK(!codegen_->IsLeafMethod()); |
| codegen_->RecordPcInfo(invoke, invoke->GetDexPc()); |
| } |
| |
| void LocationsBuilderARM64::VisitLoadClass(HLoadClass* cls) { |
| InvokeRuntimeCallingConvention calling_convention; |
| CodeGenerator::CreateLoadClassLocationSummary( |
| cls, |
| LocationFrom(calling_convention.GetRegisterAt(0)), |
| LocationFrom(vixl::x0)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLoadClass(HLoadClass* cls) { |
| if (cls->NeedsAccessCheck()) { |
| codegen_->MoveConstant(cls->GetLocations()->GetTemp(0), cls->GetTypeIndex()); |
| codegen_->InvokeRuntime(QUICK_ENTRY_POINT(pInitializeTypeAndVerifyAccess), |
| cls, |
| cls->GetDexPc(), |
| nullptr); |
| return; |
| } |
| |
| Register out = OutputRegister(cls); |
| Register current_method = InputRegisterAt(cls, 0); |
| if (cls->IsReferrersClass()) { |
| DCHECK(!cls->CanCallRuntime()); |
| DCHECK(!cls->MustGenerateClinitCheck()); |
| __ Ldr(out, MemOperand(current_method, ArtMethod::DeclaringClassOffset().Int32Value())); |
| } else { |
| DCHECK(cls->CanCallRuntime()); |
| MemberOffset resolved_types_offset = ArtMethod::DexCacheResolvedTypesOffset(kArm64PointerSize); |
| __ Ldr(out.X(), MemOperand(current_method, resolved_types_offset.Int32Value())); |
| __ Ldr(out, MemOperand(out.X(), CodeGenerator::GetCacheOffset(cls->GetTypeIndex()))); |
| // TODO: We will need a read barrier here. |
| |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) LoadClassSlowPathARM64( |
| cls, cls, cls->GetDexPc(), cls->MustGenerateClinitCheck()); |
| codegen_->AddSlowPath(slow_path); |
| __ Cbz(out, slow_path->GetEntryLabel()); |
| if (cls->MustGenerateClinitCheck()) { |
| GenerateClassInitializationCheck(slow_path, out); |
| } else { |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| } |
| } |
| |
| static MemOperand GetExceptionTlsAddress() { |
| return MemOperand(tr, Thread::ExceptionOffset<kArm64WordSize>().Int32Value()); |
| } |
| |
| void LocationsBuilderARM64::VisitLoadException(HLoadException* load) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(load, LocationSummary::kNoCall); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLoadException(HLoadException* instruction) { |
| __ Ldr(OutputRegister(instruction), GetExceptionTlsAddress()); |
| } |
| |
| void LocationsBuilderARM64::VisitClearException(HClearException* clear) { |
| new (GetGraph()->GetArena()) LocationSummary(clear, LocationSummary::kNoCall); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitClearException(HClearException* clear ATTRIBUTE_UNUSED) { |
| __ Str(wzr, GetExceptionTlsAddress()); |
| } |
| |
| void LocationsBuilderARM64::VisitLoadLocal(HLoadLocal* load) { |
| load->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLoadLocal(HLoadLocal* load) { |
| // Nothing to do, this is driven by the code generator. |
| UNUSED(load); |
| } |
| |
| void LocationsBuilderARM64::VisitLoadString(HLoadString* load) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(load, LocationSummary::kCallOnSlowPath); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitLoadString(HLoadString* load) { |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) LoadStringSlowPathARM64(load); |
| codegen_->AddSlowPath(slow_path); |
| |
| Register out = OutputRegister(load); |
| Register current_method = InputRegisterAt(load, 0); |
| __ Ldr(out, MemOperand(current_method, ArtMethod::DeclaringClassOffset().Int32Value())); |
| __ Ldr(out.X(), HeapOperand(out, mirror::Class::DexCacheStringsOffset())); |
| __ Ldr(out, MemOperand(out.X(), CodeGenerator::GetCacheOffset(load->GetStringIndex()))); |
| // TODO: We will need a read barrier here. |
| __ Cbz(out, slow_path->GetEntryLabel()); |
| __ Bind(slow_path->GetExitLabel()); |
| } |
| |
| 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. |
| UNUSED(constant); |
| } |
| |
| void LocationsBuilderARM64::VisitMonitorOperation(HMonitorOperation* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(0))); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitMonitorOperation(HMonitorOperation* instruction) { |
| codegen_->InvokeRuntime(instruction->IsEnter() |
| ? QUICK_ENTRY_POINT(pLockObject) : QUICK_ENTRY_POINT(pUnlockObject), |
| instruction, |
| instruction->GetDexPc(), |
| nullptr); |
| CheckEntrypointTypes<kQuickLockObject, void, mirror::Object*>(); |
| } |
| |
| 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(), Location::kNoOutputOverlap); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetInAt(1, Location::RequiresFpuRegister()); |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| 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: |
| __ Fmul(OutputFPRegister(mul), InputFPRegisterAt(mul, 0), InputFPRegisterAt(mul, 1)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected mul type " << mul->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitNeg(HNeg* neg) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(neg, LocationSummary::kNoCall); |
| switch (neg->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| locations->SetInAt(0, ARM64EncodableConstantOrRegister(neg->InputAt(0), neg)); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected neg type " << neg->GetResultType(); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNeg(HNeg* neg) { |
| switch (neg->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| __ Neg(OutputRegister(neg), InputOperandAt(neg, 0)); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: |
| __ Fneg(OutputFPRegister(neg), InputFPRegisterAt(neg, 0)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected neg type " << neg->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitNewArray(HNewArray* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->AddTemp(LocationFrom(calling_convention.GetRegisterAt(0))); |
| locations->SetOut(LocationFrom(x0)); |
| locations->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(1))); |
| locations->SetInAt(1, LocationFrom(calling_convention.GetRegisterAt(2))); |
| CheckEntrypointTypes<kQuickAllocArrayWithAccessCheck, |
| void*, uint32_t, int32_t, ArtMethod*>(); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNewArray(HNewArray* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| InvokeRuntimeCallingConvention calling_convention; |
| Register type_index = RegisterFrom(locations->GetTemp(0), Primitive::kPrimInt); |
| DCHECK(type_index.Is(w0)); |
| __ Mov(type_index, instruction->GetTypeIndex()); |
| // Note: if heap poisoning is enabled, the entry point takes cares |
| // of poisoning the reference. |
| codegen_->InvokeRuntime(instruction->GetEntrypoint(), |
| instruction, |
| instruction->GetDexPc(), |
| nullptr); |
| CheckEntrypointTypes<kQuickAllocArrayWithAccessCheck, void*, uint32_t, int32_t, ArtMethod*>(); |
| } |
| |
| 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->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(1))); |
| locations->SetOut(calling_convention.GetReturnLocation(Primitive::kPrimNot)); |
| CheckEntrypointTypes<kQuickAllocObjectWithAccessCheck, void*, uint32_t, ArtMethod*>(); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNewInstance(HNewInstance* instruction) { |
| LocationSummary* locations = instruction->GetLocations(); |
| Register type_index = RegisterFrom(locations->GetTemp(0), Primitive::kPrimInt); |
| DCHECK(type_index.Is(w0)); |
| __ Mov(type_index, instruction->GetTypeIndex()); |
| // Note: if heap poisoning is enabled, the entry point takes cares |
| // of poisoning the reference. |
| codegen_->InvokeRuntime(instruction->GetEntrypoint(), |
| instruction, |
| instruction->GetDexPc(), |
| nullptr); |
| CheckEntrypointTypes<kQuickAllocObjectWithAccessCheck, void*, uint32_t, ArtMethod*>(); |
| } |
| |
| void LocationsBuilderARM64::VisitNot(HNot* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNot(HNot* instruction) { |
| switch (instruction->GetResultType()) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| __ Mvn(OutputRegister(instruction), InputOperandAt(instruction, 0)); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unexpected type for not operation " << instruction->GetResultType(); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitBooleanNot(HBooleanNot* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitBooleanNot(HBooleanNot* instruction) { |
| __ Eor(OutputRegister(instruction), InputRegisterAt(instruction, 0), vixl::Operand(1)); |
| } |
| |
| void LocationsBuilderARM64::VisitNullCheck(HNullCheck* instruction) { |
| LocationSummary::CallKind call_kind = instruction->CanThrowIntoCatchBlock() |
| ? LocationSummary::kCallOnSlowPath |
| : LocationSummary::kNoCall; |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| if (instruction->HasUses()) { |
| locations->SetOut(Location::SameAsFirstInput()); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateImplicitNullCheck(HNullCheck* instruction) { |
| if (codegen_->CanMoveNullCheckToUser(instruction)) { |
| return; |
| } |
| |
| BlockPoolsScope block_pools(GetVIXLAssembler()); |
| Location obj = instruction->GetLocations()->InAt(0); |
| __ Ldr(wzr, HeapOperandFrom(obj, Offset(0))); |
| codegen_->RecordPcInfo(instruction, instruction->GetDexPc()); |
| } |
| |
| void InstructionCodeGeneratorARM64::GenerateExplicitNullCheck(HNullCheck* instruction) { |
| SlowPathCodeARM64* slow_path = new (GetGraph()->GetArena()) NullCheckSlowPathARM64(instruction); |
| codegen_->AddSlowPath(slow_path); |
| |
| LocationSummary* locations = instruction->GetLocations(); |
| Location obj = locations->InAt(0); |
| |
| __ Cbz(RegisterFrom(obj, instruction->InputAt(0)->GetType()), slow_path->GetEntryLabel()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitNullCheck(HNullCheck* instruction) { |
| if (codegen_->IsImplicitNullCheckAllowed(instruction)) { |
| GenerateImplicitNullCheck(instruction); |
| } else { |
| GenerateExplicitNullCheck(instruction); |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitOr(HOr* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitOr(HOr* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitParallelMove(HParallelMove* instruction ATTRIBUTE_UNUSED) { |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitParallelMove(HParallelMove* instruction) { |
| codegen_->GetMoveResolver()->EmitNativeCode(instruction); |
| } |
| |
| 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 ATTRIBUTE_UNUSED) { |
| // Nothing to do, the parameter is already at its location. |
| } |
| |
| void LocationsBuilderARM64::VisitCurrentMethod(HCurrentMethod* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetOut(LocationFrom(kArtMethodRegister)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitCurrentMethod( |
| HCurrentMethod* instruction ATTRIBUTE_UNUSED) { |
| // Nothing to do, the method 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) { |
| UNUSED(instruction); |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void LocationsBuilderARM64::VisitRem(HRem* rem) { |
| Primitive::Type type = rem->GetResultType(); |
| LocationSummary::CallKind call_kind = |
| Primitive::IsFloatingPointType(type) ? LocationSummary::kCall : LocationSummary::kNoCall; |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(rem, call_kind); |
| |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: |
| locations->SetInAt(0, Location::RequiresRegister()); |
| locations->SetInAt(1, Location::RegisterOrConstant(rem->InputAt(1))); |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| break; |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(0, LocationFrom(calling_convention.GetFpuRegisterAt(0))); |
| locations->SetInAt(1, LocationFrom(calling_convention.GetFpuRegisterAt(1))); |
| locations->SetOut(calling_convention.GetReturnLocation(type)); |
| |
| break; |
| } |
| |
| default: |
| LOG(FATAL) << "Unexpected rem type " << type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitRem(HRem* rem) { |
| Primitive::Type type = rem->GetResultType(); |
| |
| switch (type) { |
| case Primitive::kPrimInt: |
| case Primitive::kPrimLong: { |
| GenerateDivRemIntegral(rem); |
| break; |
| } |
| |
| case Primitive::kPrimFloat: |
| case Primitive::kPrimDouble: { |
| int32_t entry_offset = (type == Primitive::kPrimFloat) ? QUICK_ENTRY_POINT(pFmodf) |
| : QUICK_ENTRY_POINT(pFmod); |
| codegen_->InvokeRuntime(entry_offset, rem, rem->GetDexPc(), nullptr); |
| break; |
| } |
| |
| default: |
| LOG(FATAL) << "Unexpected rem type " << type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitMemoryBarrier(HMemoryBarrier* memory_barrier) { |
| memory_barrier->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitMemoryBarrier(HMemoryBarrier* memory_barrier) { |
| GenerateMemoryBarrier(memory_barrier->GetBarrierKind()); |
| } |
| |
| void LocationsBuilderARM64::VisitReturn(HReturn* instruction) { |
| LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction); |
| Primitive::Type return_type = instruction->InputAt(0)->GetType(); |
| locations->SetInAt(0, ARM64ReturnLocation(return_type)); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitReturn(HReturn* instruction) { |
| UNUSED(instruction); |
| codegen_->GenerateFrameExit(); |
| } |
| |
| void LocationsBuilderARM64::VisitReturnVoid(HReturnVoid* instruction) { |
| instruction->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitReturnVoid(HReturnVoid* instruction) { |
| UNUSED(instruction); |
| codegen_->GenerateFrameExit(); |
| } |
| |
| void LocationsBuilderARM64::VisitShl(HShl* shl) { |
| HandleShift(shl); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitShl(HShl* shl) { |
| HandleShift(shl); |
| } |
| |
| void LocationsBuilderARM64::VisitShr(HShr* shr) { |
| HandleShift(shr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitShr(HShr* shr) { |
| HandleShift(shr); |
| } |
| |
| 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::kPrimNot: |
| case Primitive::kPrimBoolean: |
| case Primitive::kPrimByte: |
| case Primitive::kPrimChar: |
| case Primitive::kPrimShort: |
| case Primitive::kPrimInt: |
| case Primitive::kPrimFloat: |
| locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| case Primitive::kPrimLong: |
| case Primitive::kPrimDouble: |
| locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal()))); |
| break; |
| |
| default: |
| LOG(FATAL) << "Unimplemented local type " << field_type; |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitStoreLocal(HStoreLocal* store) { |
| UNUSED(store); |
| } |
| |
| void LocationsBuilderARM64::VisitSub(HSub* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitSub(HSub* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitStaticFieldGet(HStaticFieldGet* instruction) { |
| HandleFieldGet(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitStaticFieldGet(HStaticFieldGet* instruction) { |
| HandleFieldGet(instruction, instruction->GetFieldInfo()); |
| } |
| |
| void LocationsBuilderARM64::VisitStaticFieldSet(HStaticFieldSet* instruction) { |
| HandleFieldSet(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitStaticFieldSet(HStaticFieldSet* instruction) { |
| HandleFieldSet(instruction, instruction->GetFieldInfo(), instruction->GetValueCanBeNull()); |
| } |
| |
| void LocationsBuilderARM64::VisitUnresolvedInstanceFieldGet( |
| HUnresolvedInstanceFieldGet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->CreateUnresolvedFieldLocationSummary( |
| instruction, instruction->GetFieldType(), calling_convention); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitUnresolvedInstanceFieldGet( |
| HUnresolvedInstanceFieldGet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->GenerateUnresolvedFieldAccess(instruction, |
| instruction->GetFieldType(), |
| instruction->GetFieldIndex(), |
| instruction->GetDexPc(), |
| calling_convention); |
| } |
| |
| void LocationsBuilderARM64::VisitUnresolvedInstanceFieldSet( |
| HUnresolvedInstanceFieldSet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->CreateUnresolvedFieldLocationSummary( |
| instruction, instruction->GetFieldType(), calling_convention); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitUnresolvedInstanceFieldSet( |
| HUnresolvedInstanceFieldSet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->GenerateUnresolvedFieldAccess(instruction, |
| instruction->GetFieldType(), |
| instruction->GetFieldIndex(), |
| instruction->GetDexPc(), |
| calling_convention); |
| } |
| |
| void LocationsBuilderARM64::VisitUnresolvedStaticFieldGet( |
| HUnresolvedStaticFieldGet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->CreateUnresolvedFieldLocationSummary( |
| instruction, instruction->GetFieldType(), calling_convention); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitUnresolvedStaticFieldGet( |
| HUnresolvedStaticFieldGet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->GenerateUnresolvedFieldAccess(instruction, |
| instruction->GetFieldType(), |
| instruction->GetFieldIndex(), |
| instruction->GetDexPc(), |
| calling_convention); |
| } |
| |
| void LocationsBuilderARM64::VisitUnresolvedStaticFieldSet( |
| HUnresolvedStaticFieldSet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->CreateUnresolvedFieldLocationSummary( |
| instruction, instruction->GetFieldType(), calling_convention); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitUnresolvedStaticFieldSet( |
| HUnresolvedStaticFieldSet* instruction) { |
| FieldAccessCallingConventionARM64 calling_convention; |
| codegen_->GenerateUnresolvedFieldAccess(instruction, |
| instruction->GetFieldType(), |
| instruction->GetFieldIndex(), |
| instruction->GetDexPc(), |
| calling_convention); |
| } |
| |
| void LocationsBuilderARM64::VisitSuspendCheck(HSuspendCheck* instruction) { |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCallOnSlowPath); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitSuspendCheck(HSuspendCheck* instruction) { |
| HBasicBlock* block = instruction->GetBlock(); |
| if (block->GetLoopInformation() != nullptr) { |
| DCHECK(block->GetLoopInformation()->GetSuspendCheck() == instruction); |
| // The back edge will generate the suspend check. |
| return; |
| } |
| if (block->IsEntryBlock() && instruction->GetNext()->IsGoto()) { |
| // The goto will generate the suspend check. |
| return; |
| } |
| GenerateSuspendCheck(instruction, nullptr); |
| } |
| |
| void LocationsBuilderARM64::VisitTemporary(HTemporary* temp) { |
| temp->SetLocations(nullptr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitTemporary(HTemporary* temp) { |
| // Nothing to do, this is driven by the code generator. |
| UNUSED(temp); |
| } |
| |
| void LocationsBuilderARM64::VisitThrow(HThrow* instruction) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kCall); |
| InvokeRuntimeCallingConvention calling_convention; |
| locations->SetInAt(0, LocationFrom(calling_convention.GetRegisterAt(0))); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitThrow(HThrow* instruction) { |
| codegen_->InvokeRuntime( |
| QUICK_ENTRY_POINT(pDeliverException), instruction, instruction->GetDexPc(), nullptr); |
| CheckEntrypointTypes<kQuickDeliverException, void, mirror::Object*>(); |
| } |
| |
| void LocationsBuilderARM64::VisitTypeConversion(HTypeConversion* conversion) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(conversion, LocationSummary::kNoCall); |
| Primitive::Type input_type = conversion->GetInputType(); |
| Primitive::Type result_type = conversion->GetResultType(); |
| DCHECK_NE(input_type, result_type); |
| if ((input_type == Primitive::kPrimNot) || (input_type == Primitive::kPrimVoid) || |
| (result_type == Primitive::kPrimNot) || (result_type == Primitive::kPrimVoid)) { |
| LOG(FATAL) << "Unexpected type conversion from " << input_type << " to " << result_type; |
| } |
| |
| if (Primitive::IsFloatingPointType(input_type)) { |
| locations->SetInAt(0, Location::RequiresFpuRegister()); |
| } else { |
| locations->SetInAt(0, Location::RequiresRegister()); |
| } |
| |
| if (Primitive::IsFloatingPointType(result_type)) { |
| locations->SetOut(Location::RequiresFpuRegister(), Location::kNoOutputOverlap); |
| } else { |
| locations->SetOut(Location::RequiresRegister(), Location::kNoOutputOverlap); |
| } |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitTypeConversion(HTypeConversion* conversion) { |
| Primitive::Type result_type = conversion->GetResultType(); |
| Primitive::Type input_type = conversion->GetInputType(); |
| |
| DCHECK_NE(input_type, result_type); |
| |
| if (Primitive::IsIntegralType(result_type) && Primitive::IsIntegralType(input_type)) { |
| int result_size = Primitive::ComponentSize(result_type); |
| int input_size = Primitive::ComponentSize(input_type); |
| int min_size = std::min(result_size, input_size); |
| Register output = OutputRegister(conversion); |
| Register source = InputRegisterAt(conversion, 0); |
| if ((result_type == Primitive::kPrimChar) && (input_size < result_size)) { |
| __ Ubfx(output, source, 0, result_size * kBitsPerByte); |
| } else if (result_type == Primitive::kPrimInt && input_type == Primitive::kPrimLong) { |
| // 'int' values are used directly as W registers, discarding the top |
| // bits, so we don't need to sign-extend and can just perform a move. |
| // We do not pass the `kDiscardForSameWReg` argument to force clearing the |
| // top 32 bits of the target register. We theoretically could leave those |
| // bits unchanged, but we would have to make sure that no code uses a |
| // 32bit input value as a 64bit value assuming that the top 32 bits are |
| // zero. |
| __ Mov(output.W(), source.W()); |
| } else if ((result_type == Primitive::kPrimChar) || |
| ((input_type == Primitive::kPrimChar) && (result_size > input_size))) { |
| __ Ubfx(output, output.IsX() ? source.X() : source.W(), 0, min_size * kBitsPerByte); |
| } else { |
| __ Sbfx(output, output.IsX() ? source.X() : source.W(), 0, min_size * kBitsPerByte); |
| } |
| } else if (Primitive::IsFloatingPointType(result_type) && Primitive::IsIntegralType(input_type)) { |
| __ Scvtf(OutputFPRegister(conversion), InputRegisterAt(conversion, 0)); |
| } else if (Primitive::IsIntegralType(result_type) && Primitive::IsFloatingPointType(input_type)) { |
| CHECK(result_type == Primitive::kPrimInt || result_type == Primitive::kPrimLong); |
| __ Fcvtzs(OutputRegister(conversion), InputFPRegisterAt(conversion, 0)); |
| } else if (Primitive::IsFloatingPointType(result_type) && |
| Primitive::IsFloatingPointType(input_type)) { |
| __ Fcvt(OutputFPRegister(conversion), InputFPRegisterAt(conversion, 0)); |
| } else { |
| LOG(FATAL) << "Unexpected or unimplemented type conversion from " << input_type |
| << " to " << result_type; |
| } |
| } |
| |
| void LocationsBuilderARM64::VisitUShr(HUShr* ushr) { |
| HandleShift(ushr); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitUShr(HUShr* ushr) { |
| HandleShift(ushr); |
| } |
| |
| void LocationsBuilderARM64::VisitXor(HXor* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitXor(HXor* instruction) { |
| HandleBinaryOp(instruction); |
| } |
| |
| void LocationsBuilderARM64::VisitBoundType(HBoundType* instruction) { |
| // Nothing to do, this should be removed during prepare for register allocator. |
| UNUSED(instruction); |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitBoundType(HBoundType* instruction) { |
| // Nothing to do, this should be removed during prepare for register allocator. |
| UNUSED(instruction); |
| LOG(FATAL) << "Unreachable"; |
| } |
| |
| void LocationsBuilderARM64::VisitFakeString(HFakeString* instruction) { |
| DCHECK(codegen_->IsBaseline()); |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(instruction, LocationSummary::kNoCall); |
| locations->SetOut(Location::ConstantLocation(GetGraph()->GetNullConstant())); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitFakeString(HFakeString* instruction ATTRIBUTE_UNUSED) { |
| DCHECK(codegen_->IsBaseline()); |
| // Will be generated at use site. |
| } |
| |
| // Simple implementation of packed switch - generate cascaded compare/jumps. |
| void LocationsBuilderARM64::VisitPackedSwitch(HPackedSwitch* switch_instr) { |
| LocationSummary* locations = |
| new (GetGraph()->GetArena()) LocationSummary(switch_instr, LocationSummary::kNoCall); |
| locations->SetInAt(0, Location::RequiresRegister()); |
| } |
| |
| void InstructionCodeGeneratorARM64::VisitPackedSwitch(HPackedSwitch* switch_instr) { |
| int32_t lower_bound = switch_instr->GetStartValue(); |
| int32_t num_entries = switch_instr->GetNumEntries(); |
| Register value_reg = InputRegisterAt(switch_instr, 0); |
| HBasicBlock* default_block = switch_instr->GetDefaultBlock(); |
| |
| // Create a series of compare/jumps. |
| const ArenaVector<HBasicBlock*>& successors = switch_instr->GetBlock()->GetSuccessors(); |
| for (int32_t i = 0; i < num_entries; i++) { |
| int32_t case_value = lower_bound + i; |
| vixl::Label* succ = codegen_->GetLabelOf(successors[i]); |
| if (case_value == 0) { |
| __ Cbz(value_reg, succ); |
| } else { |
| __ Cmp(value_reg, vixl::Operand(case_value)); |
| __ B(eq, succ); |
| } |
| } |
| |
| // And the default for any other value. |
| if (!codegen_->GoesToNextBlock(switch_instr->GetBlock(), default_block)) { |
| __ B(codegen_->GetLabelOf(default_block)); |
| } |
| } |
| |
| #undef __ |
| #undef QUICK_ENTRY_POINT |
| |
| } // namespace arm64 |
| } // namespace art |