LCOV - code coverage report
Current view: top level - src/compiler - code-assembler.cc (source / functions) Hit Total Coverage
Test: app.info Lines: 598 725 82.5 %
Date: 2019-04-19 Functions: 240 290 82.8 %

          Line data    Source code
       1             : // Copyright 2015 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/compiler/code-assembler.h"
       6             : 
       7             : #include <ostream>
       8             : 
       9             : #include "src/code-factory.h"
      10             : #include "src/compiler/backend/instruction-selector.h"
      11             : #include "src/compiler/graph.h"
      12             : #include "src/compiler/linkage.h"
      13             : #include "src/compiler/node-matchers.h"
      14             : #include "src/compiler/pipeline.h"
      15             : #include "src/compiler/raw-machine-assembler.h"
      16             : #include "src/compiler/schedule.h"
      17             : #include "src/frames.h"
      18             : #include "src/interface-descriptors.h"
      19             : #include "src/interpreter/bytecodes.h"
      20             : #include "src/machine-type.h"
      21             : #include "src/macro-assembler.h"
      22             : #include "src/memcopy.h"
      23             : #include "src/objects-inl.h"
      24             : #include "src/objects/smi.h"
      25             : #include "src/zone/zone.h"
      26             : 
      27             : namespace v8 {
      28             : namespace internal {
      29             : 
      30             : constexpr MachineType MachineTypeOf<Smi>::value;
      31             : constexpr MachineType MachineTypeOf<Object>::value;
      32             : 
      33             : namespace compiler {
      34             : 
      35             : static_assert(std::is_convertible<TNode<Number>, TNode<Object>>::value,
      36             :               "test subtyping");
      37             : static_assert(std::is_convertible<TNode<UnionT<Smi, HeapNumber>>,
      38             :                                   TNode<UnionT<Smi, HeapObject>>>::value,
      39             :               "test subtyping");
      40             : static_assert(
      41             :     !std::is_convertible<TNode<UnionT<Smi, HeapObject>>, TNode<Number>>::value,
      42             :     "test subtyping");
      43             : 
      44       48103 : CodeAssemblerState::CodeAssemblerState(
      45             :     Isolate* isolate, Zone* zone, const CallInterfaceDescriptor& descriptor,
      46             :     Code::Kind kind, const char* name, PoisoningMitigationLevel poisoning_level,
      47             :     int32_t builtin_index)
      48             :     // TODO(rmcilroy): Should we use Linkage::GetBytecodeDispatchDescriptor for
      49             :     // bytecode handlers?
      50             :     : CodeAssemblerState(
      51             :           isolate, zone,
      52             :           Linkage::GetStubCallDescriptor(
      53             :               zone, descriptor, descriptor.GetStackParameterCount(),
      54             :               CallDescriptor::kNoFlags, Operator::kNoProperties),
      55       48103 :           kind, name, poisoning_level, builtin_index) {}
      56             : 
      57       20136 : CodeAssemblerState::CodeAssemblerState(Isolate* isolate, Zone* zone,
      58             :                                        int parameter_count, Code::Kind kind,
      59             :                                        const char* name,
      60             :                                        PoisoningMitigationLevel poisoning_level,
      61             :                                        int32_t builtin_index)
      62             :     : CodeAssemblerState(
      63             :           isolate, zone,
      64             :           Linkage::GetJSCallDescriptor(
      65             :               zone, false, parameter_count,
      66             :               (kind == Code::BUILTIN ? CallDescriptor::kPushArgumentCount
      67             :                                      : CallDescriptor::kNoFlags) |
      68             :                   CallDescriptor::kCanUseRoots),
      69       40272 :           kind, name, poisoning_level, builtin_index) {}
      70             : 
      71       68807 : CodeAssemblerState::CodeAssemblerState(Isolate* isolate, Zone* zone,
      72             :                                        CallDescriptor* call_descriptor,
      73             :                                        Code::Kind kind, const char* name,
      74             :                                        PoisoningMitigationLevel poisoning_level,
      75             :                                        int32_t builtin_index)
      76             :     : raw_assembler_(new RawMachineAssembler(
      77       68807 :           isolate, new (zone) Graph(zone), call_descriptor,
      78             :           MachineType::PointerRepresentation(),
      79      137614 :           InstructionSelector::SupportedMachineOperatorFlags(),
      80      206421 :           InstructionSelector::AlignmentRequirements(), poisoning_level)),
      81             :       kind_(kind),
      82             :       name_(name),
      83             :       builtin_index_(builtin_index),
      84             :       code_generated_(false),
      85      206421 :       variables_(zone) {}
      86             : 
      87             : CodeAssemblerState::~CodeAssemblerState() = default;
      88             : 
      89           0 : int CodeAssemblerState::parameter_count() const {
      90           0 :   return static_cast<int>(raw_assembler_->call_descriptor()->ParameterCount());
      91             : }
      92             : 
      93             : CodeAssembler::~CodeAssembler() = default;
      94             : 
      95             : #if DEBUG
      96             : void CodeAssemblerState::PrintCurrentBlock(std::ostream& os) {
      97             :   raw_assembler_->PrintCurrentBlock(os);
      98             : }
      99             : #endif
     100             : 
     101        3388 : bool CodeAssemblerState::InsideBlock() { return raw_assembler_->InsideBlock(); }
     102             : 
     103       64120 : void CodeAssemblerState::SetInitialDebugInformation(const char* msg,
     104             :                                                     const char* file,
     105             :                                                     int line) {
     106             : #if DEBUG
     107             :   AssemblerDebugInfo debug_info = {msg, file, line};
     108             :   raw_assembler_->SetSourcePosition(file, line);
     109             :   raw_assembler_->SetInitialDebugInformation(debug_info);
     110             : #endif  // DEBUG
     111       64120 : }
     112             : 
     113           0 : class BreakOnNodeDecorator final : public GraphDecorator {
     114             :  public:
     115           0 :   explicit BreakOnNodeDecorator(NodeId node_id) : node_id_(node_id) {}
     116             : 
     117           0 :   void Decorate(Node* node) final {
     118           0 :     if (node->id() == node_id_) {
     119           0 :       base::OS::DebugBreak();
     120             :     }
     121           0 :   }
     122             : 
     123             :  private:
     124             :   NodeId node_id_;
     125             : };
     126             : 
     127           0 : void CodeAssembler::BreakOnNode(int node_id) {
     128             :   Graph* graph = raw_assembler()->graph();
     129             :   Zone* zone = graph->zone();
     130             :   GraphDecorator* decorator =
     131           0 :       new (zone) BreakOnNodeDecorator(static_cast<NodeId>(node_id));
     132           0 :   graph->AddDecorator(decorator);
     133           0 : }
     134             : 
     135       27990 : void CodeAssembler::RegisterCallGenerationCallbacks(
     136             :     const CodeAssemblerCallback& call_prologue,
     137             :     const CodeAssemblerCallback& call_epilogue) {
     138             :   // The callback can be registered only once.
     139             :   DCHECK(!state_->call_prologue_);
     140             :   DCHECK(!state_->call_epilogue_);
     141       27990 :   state_->call_prologue_ = call_prologue;
     142       27990 :   state_->call_epilogue_ = call_epilogue;
     143       27990 : }
     144             : 
     145       27990 : void CodeAssembler::UnregisterCallGenerationCallbacks() {
     146       27990 :   state_->call_prologue_ = nullptr;
     147       27990 :   state_->call_epilogue_ = nullptr;
     148       27990 : }
     149             : 
     150      253350 : void CodeAssembler::CallPrologue() {
     151      253350 :   if (state_->call_prologue_) {
     152             :     state_->call_prologue_();
     153             :   }
     154      253350 : }
     155             : 
     156      253350 : void CodeAssembler::CallEpilogue() {
     157      253350 :   if (state_->call_epilogue_) {
     158             :     state_->call_epilogue_();
     159             :   }
     160      253350 : }
     161             : 
     162        1176 : bool CodeAssembler::Word32ShiftIsSafe() const {
     163        1176 :   return raw_assembler()->machine()->Word32ShiftIsSafe();
     164             : }
     165             : 
     166        5742 : PoisoningMitigationLevel CodeAssembler::poisoning_level() const {
     167        5742 :   return raw_assembler()->poisoning_level();
     168             : }
     169             : 
     170             : // static
     171       67324 : Handle<Code> CodeAssembler::GenerateCode(CodeAssemblerState* state,
     172             :                                          const AssemblerOptions& options) {
     173             :   DCHECK(!state->code_generated_);
     174             : 
     175             :   RawMachineAssembler* rasm = state->raw_assembler_.get();
     176             : 
     177             :   Handle<Code> code;
     178       67324 :   Graph* graph = rasm->ExportForOptimization();
     179             : 
     180      134648 :   code = Pipeline::GenerateCodeForCodeStub(
     181             :              rasm->isolate(), rasm->call_descriptor(), graph,
     182             :              rasm->source_positions(), state->kind_, state->name_,
     183       67324 :              state->builtin_index_, rasm->poisoning_level(), options)
     184             :              .ToHandleChecked();
     185             : 
     186       67324 :   state->code_generated_ = true;
     187       67324 :   return code;
     188             : }
     189             : 
     190      228720 : bool CodeAssembler::Is64() const { return raw_assembler()->machine()->Is64(); }
     191             : 
     192         118 : bool CodeAssembler::IsFloat64RoundUpSupported() const {
     193         118 :   return raw_assembler()->machine()->Float64RoundUp().IsSupported();
     194             : }
     195             : 
     196         125 : bool CodeAssembler::IsFloat64RoundDownSupported() const {
     197         125 :   return raw_assembler()->machine()->Float64RoundDown().IsSupported();
     198             : }
     199             : 
     200         392 : bool CodeAssembler::IsFloat64RoundTiesEvenSupported() const {
     201         392 :   return raw_assembler()->machine()->Float64RoundTiesEven().IsSupported();
     202             : }
     203             : 
     204         340 : bool CodeAssembler::IsFloat64RoundTruncateSupported() const {
     205         340 :   return raw_assembler()->machine()->Float64RoundTruncate().IsSupported();
     206             : }
     207             : 
     208           0 : bool CodeAssembler::IsInt32AbsWithOverflowSupported() const {
     209           0 :   return raw_assembler()->machine()->Int32AbsWithOverflow().IsSupported();
     210             : }
     211             : 
     212           0 : bool CodeAssembler::IsInt64AbsWithOverflowSupported() const {
     213          56 :   return raw_assembler()->machine()->Int64AbsWithOverflow().IsSupported();
     214             : }
     215             : 
     216          56 : bool CodeAssembler::IsIntPtrAbsWithOverflowSupported() const {
     217             :   return Is64() ? IsInt64AbsWithOverflowSupported()
     218         112 :                 : IsInt32AbsWithOverflowSupported();
     219             : }
     220             : 
     221             : #ifdef DEBUG
     222             : void CodeAssembler::GenerateCheckMaybeObjectIsObject(Node* node,
     223             :                                                      const char* location) {
     224             :   Label ok(this);
     225             :   GotoIf(WordNotEqual(WordAnd(BitcastMaybeObjectToWord(node),
     226             :                               IntPtrConstant(kHeapObjectTagMask)),
     227             :                       IntPtrConstant(kWeakHeapObjectTag)),
     228             :          &ok);
     229             :   Node* message_node = StringConstant(location);
     230             :   DebugAbort(message_node);
     231             :   Unreachable();
     232             :   Bind(&ok);
     233             : }
     234             : #endif
     235             : 
     236      679684 : TNode<Int32T> CodeAssembler::Int32Constant(int32_t value) {
     237      848260 :   return UncheckedCast<Int32T>(raw_assembler()->Int32Constant(value));
     238             : }
     239             : 
     240       11540 : TNode<Int64T> CodeAssembler::Int64Constant(int64_t value) {
     241       11540 :   return UncheckedCast<Int64T>(raw_assembler()->Int64Constant(value));
     242             : }
     243             : 
     244     3252709 : TNode<IntPtrT> CodeAssembler::IntPtrConstant(intptr_t value) {
     245     3252709 :   return UncheckedCast<IntPtrT>(raw_assembler()->IntPtrConstant(value));
     246             : }
     247             : 
     248       10660 : TNode<Number> CodeAssembler::NumberConstant(double value) {
     249             :   int smi_value;
     250       10660 :   if (DoubleToSmiInteger(value, &smi_value)) {
     251             :     return UncheckedCast<Number>(SmiConstant(smi_value));
     252             :   } else {
     253             :     // We allocate the heap number constant eagerly at this point instead of
     254             :     // deferring allocation to code generation
     255             :     // (see AllocateAndInstallRequestedHeapObjects) since that makes it easier
     256             :     // to generate constant lookups for embedded builtins.
     257             :     return UncheckedCast<Number>(HeapConstant(
     258        1744 :         isolate()->factory()->NewHeapNumber(value, AllocationType::kOld)));
     259             :   }
     260             : }
     261             : 
     262      304061 : TNode<Smi> CodeAssembler::SmiConstant(Smi value) {
     263             :   return UncheckedCast<Smi>(BitcastWordToTaggedSigned(
     264      608122 :       IntPtrConstant(static_cast<intptr_t>(value.ptr()))));
     265             : }
     266             : 
     267      282701 : TNode<Smi> CodeAssembler::SmiConstant(int value) {
     268      291617 :   return SmiConstant(Smi::FromInt(value));
     269             : }
     270             : 
     271      145106 : TNode<HeapObject> CodeAssembler::UntypedHeapConstant(
     272             :     Handle<HeapObject> object) {
     273      754514 :   return UncheckedCast<HeapObject>(raw_assembler()->HeapConstant(object));
     274             : }
     275             : 
     276       19032 : TNode<String> CodeAssembler::StringConstant(const char* str) {
     277             :   Handle<String> internalized_string =
     278       19032 :       factory()->InternalizeOneByteString(OneByteVector(str));
     279       19032 :   return UncheckedCast<String>(HeapConstant(internalized_string));
     280             : }
     281             : 
     282         316 : TNode<Oddball> CodeAssembler::BooleanConstant(bool value) {
     283         632 :   Handle<Object> object = isolate()->factory()->ToBoolean(value);
     284             :   return UncheckedCast<Oddball>(
     285         316 :       raw_assembler()->HeapConstant(Handle<HeapObject>::cast(object)));
     286             : }
     287             : 
     288       62938 : TNode<ExternalReference> CodeAssembler::ExternalConstant(
     289             :     ExternalReference address) {
     290             :   return UncheckedCast<ExternalReference>(
     291      213042 :       raw_assembler()->ExternalConstant(address));
     292             : }
     293             : 
     294       11052 : TNode<Float64T> CodeAssembler::Float64Constant(double value) {
     295       11052 :   return UncheckedCast<Float64T>(raw_assembler()->Float64Constant(value));
     296             : }
     297             : 
     298           0 : TNode<HeapNumber> CodeAssembler::NaNConstant() {
     299           0 :   return UncheckedCast<HeapNumber>(LoadRoot(RootIndex::kNanValue));
     300             : }
     301             : 
     302     2164556 : bool CodeAssembler::ToInt32Constant(Node* node, int32_t& out_value) {
     303             :   {
     304             :     Int64Matcher m(node);
     305     2352325 :     if (m.HasValue() && m.IsInRange(std::numeric_limits<int32_t>::min(),
     306             :                                     std::numeric_limits<int32_t>::max())) {
     307      187765 :       out_value = static_cast<int32_t>(m.Value());
     308             :       return true;
     309             :     }
     310             :   }
     311             : 
     312             :   {
     313             :     Int32Matcher m(node);
     314     1976791 :     if (m.HasValue()) {
     315           0 :       out_value = m.Value();
     316             :       return true;
     317             :     }
     318             :   }
     319             : 
     320     1976791 :   return false;
     321             : }
     322             : 
     323          20 : bool CodeAssembler::ToInt64Constant(Node* node, int64_t& out_value) {
     324             :   Int64Matcher m(node);
     325        5132 :   if (m.HasValue()) out_value = m.Value();
     326          20 :   return m.HasValue();
     327             : }
     328             : 
     329       33672 : bool CodeAssembler::ToSmiConstant(Node* node, Smi* out_value) {
     330       33672 :   if (node->opcode() == IrOpcode::kBitcastWordToTaggedSigned) {
     331             :     node = node->InputAt(0);
     332             :   }
     333             :   IntPtrMatcher m(node);
     334       33672 :   if (m.HasValue()) {
     335             :     intptr_t value = m.Value();
     336             :     // Make sure that the value is actually a smi
     337        2400 :     CHECK_EQ(0, value & ((static_cast<intptr_t>(1) << kSmiShiftSize) - 1));
     338        2400 :     *out_value = Smi(static_cast<Address>(value));
     339        2400 :     return true;
     340             :   }
     341             :   return false;
     342             : }
     343             : 
     344     4674483 : bool CodeAssembler::ToIntPtrConstant(Node* node, intptr_t& out_value) {
     345     4674483 :   if (node->opcode() == IrOpcode::kBitcastWordToTaggedSigned ||
     346             :       node->opcode() == IrOpcode::kBitcastWordToTagged) {
     347             :     node = node->InputAt(0);
     348             :   }
     349             :   IntPtrMatcher m(node);
     350     4674483 :   if (m.HasValue()) out_value = m.Value();
     351     4674483 :   return m.HasValue();
     352             : }
     353             : 
     354        1848 : bool CodeAssembler::IsUndefinedConstant(TNode<Object> node) {
     355             :   compiler::HeapObjectMatcher m(node);
     356        1848 :   return m.Is(isolate()->factory()->undefined_value());
     357             : }
     358             : 
     359        1568 : bool CodeAssembler::IsNullConstant(TNode<Object> node) {
     360             :   compiler::HeapObjectMatcher m(node);
     361        1568 :   return m.Is(isolate()->factory()->null_value());
     362             : }
     363             : 
     364      263564 : Node* CodeAssembler::Parameter(int index) {
     365      263900 :   if (index == kTargetParameterIndex) return raw_assembler()->TargetParameter();
     366      526456 :   return raw_assembler()->Parameter(index);
     367             : }
     368             : 
     369           0 : bool CodeAssembler::IsJSFunctionCall() const {
     370             :   auto call_descriptor = raw_assembler()->call_descriptor();
     371           0 :   return call_descriptor->IsJSFunctionCall();
     372             : }
     373             : 
     374       19208 : TNode<Context> CodeAssembler::GetJSContextParameter() {
     375             :   auto call_descriptor = raw_assembler()->call_descriptor();
     376             :   DCHECK(call_descriptor->IsJSFunctionCall());
     377       38416 :   return CAST(Parameter(Linkage::GetJSCallContextParamIndex(
     378             :       static_cast<int>(call_descriptor->JSParameterCount()))));
     379             : }
     380             : 
     381       61324 : void CodeAssembler::Return(SloppyTNode<Object> value) {
     382       61548 :   return raw_assembler()->Return(value);
     383             : }
     384             : 
     385           0 : void CodeAssembler::Return(SloppyTNode<Object> value1,
     386             :                            SloppyTNode<Object> value2) {
     387           0 :   return raw_assembler()->Return(value1, value2);
     388             : }
     389             : 
     390           0 : void CodeAssembler::Return(SloppyTNode<Object> value1,
     391             :                            SloppyTNode<Object> value2,
     392             :                            SloppyTNode<Object> value3) {
     393           0 :   return raw_assembler()->Return(value1, value2, value3);
     394             : }
     395             : 
     396       13352 : void CodeAssembler::PopAndReturn(Node* pop, Node* value) {
     397       13352 :   return raw_assembler()->PopAndReturn(pop, value);
     398             : }
     399             : 
     400         224 : void CodeAssembler::ReturnIf(Node* condition, Node* value) {
     401         224 :   Label if_return(this), if_continue(this);
     402         224 :   Branch(condition, &if_return, &if_continue);
     403             :   Bind(&if_return);
     404             :   Return(value);
     405             :   Bind(&if_continue);
     406         224 : }
     407             : 
     408         336 : void CodeAssembler::ReturnRaw(Node* value) {
     409         336 :   return raw_assembler()->Return(value);
     410             : }
     411             : 
     412         440 : void CodeAssembler::DebugAbort(Node* message) {
     413         440 :   raw_assembler()->DebugAbort(message);
     414         440 : }
     415             : 
     416      206760 : void CodeAssembler::DebugBreak() { raw_assembler()->DebugBreak(); }
     417             : 
     418       66720 : void CodeAssembler::Unreachable() {
     419             :   DebugBreak();
     420       66720 :   raw_assembler()->Unreachable();
     421       66720 : }
     422             : 
     423           4 : void CodeAssembler::Comment(std::string str) {
     424           4 :   if (!FLAG_code_comments) return;
     425           4 :   raw_assembler()->Comment(str);
     426             : }
     427             : 
     428      859504 : void CodeAssembler::SetSourcePosition(const char* file, int line) {
     429      859504 :   raw_assembler()->SetSourcePosition(file, line);
     430      859504 : }
     431             : 
     432     3520040 : void CodeAssembler::Bind(Label* label) { return label->Bind(); }
     433             : 
     434             : #if DEBUG
     435             : void CodeAssembler::Bind(Label* label, AssemblerDebugInfo debug_info) {
     436             :   return label->Bind(debug_info);
     437             : }
     438             : #endif  // DEBUG
     439             : 
     440        8008 : Node* CodeAssembler::LoadFramePointer() {
     441        8008 :   return raw_assembler()->LoadFramePointer();
     442             : }
     443             : 
     444       32696 : Node* CodeAssembler::LoadParentFramePointer() {
     445       32696 :   return raw_assembler()->LoadParentFramePointer();
     446             : }
     447             : 
     448       19432 : Node* CodeAssembler::LoadStackPointer() {
     449       19432 :   return raw_assembler()->LoadStackPointer();
     450             : }
     451             : 
     452       19056 : TNode<Object> CodeAssembler::TaggedPoisonOnSpeculation(
     453             :     SloppyTNode<Object> value) {
     454             :   return UncheckedCast<Object>(
     455       19056 :       raw_assembler()->TaggedPoisonOnSpeculation(value));
     456             : }
     457             : 
     458       45864 : TNode<WordT> CodeAssembler::WordPoisonOnSpeculation(SloppyTNode<WordT> value) {
     459       45864 :   return UncheckedCast<WordT>(raw_assembler()->WordPoisonOnSpeculation(value));
     460             : }
     461             : 
     462             : #define DEFINE_CODE_ASSEMBLER_BINARY_OP(name, ResType, Arg1Type, Arg2Type) \
     463             :   TNode<ResType> CodeAssembler::name(SloppyTNode<Arg1Type> a,              \
     464             :                                      SloppyTNode<Arg2Type> b) {            \
     465             :     return UncheckedCast<ResType>(raw_assembler()->name(a, b));            \
     466             :   }
     467      794472 : CODE_ASSEMBLER_BINARY_OP_LIST(DEFINE_CODE_ASSEMBLER_BINARY_OP)
     468             : #undef DEFINE_CODE_ASSEMBLER_BINARY_OP
     469             : 
     470      645623 : TNode<WordT> CodeAssembler::IntPtrAdd(SloppyTNode<WordT> left,
     471             :                                       SloppyTNode<WordT> right) {
     472             :   intptr_t left_constant;
     473      645623 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     474             :   intptr_t right_constant;
     475      645623 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     476      645623 :   if (is_left_constant) {
     477      287790 :     if (is_right_constant) {
     478      102522 :       return IntPtrConstant(left_constant + right_constant);
     479             :     }
     480      236529 :     if (left_constant == 0) {
     481       37189 :       return right;
     482             :     }
     483      357833 :   } else if (is_right_constant) {
     484      250583 :     if (right_constant == 0) {
     485       19381 :       return left;
     486             :     }
     487             :   }
     488             :   return UncheckedCast<WordT>(raw_assembler()->IntPtrAdd(left, right));
     489             : }
     490             : 
     491         509 : TNode<IntPtrT> CodeAssembler::IntPtrDiv(TNode<IntPtrT> left,
     492             :                                         TNode<IntPtrT> right) {
     493             :   intptr_t left_constant;
     494         509 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     495             :   intptr_t right_constant;
     496         509 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     497         509 :   if (is_right_constant) {
     498          61 :     if (is_left_constant) {
     499           2 :       return IntPtrConstant(left_constant / right_constant);
     500             :     }
     501         118 :     if (base::bits::IsPowerOfTwo(right_constant)) {
     502          58 :       return WordSar(left, WhichPowerOf2(right_constant));
     503             :     }
     504             :   }
     505             :   return UncheckedCast<IntPtrT>(raw_assembler()->IntPtrDiv(left, right));
     506             : }
     507             : 
     508      174081 : TNode<WordT> CodeAssembler::IntPtrSub(SloppyTNode<WordT> left,
     509             :                                       SloppyTNode<WordT> right) {
     510             :   intptr_t left_constant;
     511      174081 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     512             :   intptr_t right_constant;
     513      174081 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     514      174081 :   if (is_left_constant) {
     515       77353 :     if (is_right_constant) {
     516      129042 :       return IntPtrConstant(left_constant - right_constant);
     517             :     }
     518       96728 :   } else if (is_right_constant) {
     519       82168 :     if (right_constant == 0) {
     520        9777 :       return left;
     521             :     }
     522             :   }
     523       99783 :   return UncheckedCast<IntPtrT>(raw_assembler()->IntPtrSub(left, right));
     524             : }
     525             : 
     526       31150 : TNode<WordT> CodeAssembler::IntPtrMul(SloppyTNode<WordT> left,
     527             :                                       SloppyTNode<WordT> right) {
     528             :   intptr_t left_constant;
     529       31150 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     530             :   intptr_t right_constant;
     531       31150 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     532       31150 :   if (is_left_constant) {
     533        2011 :     if (is_right_constant) {
     534        4018 :       return IntPtrConstant(left_constant * right_constant);
     535             :     }
     536           4 :     if (base::bits::IsPowerOfTwo(left_constant)) {
     537           2 :       return WordShl(right, WhichPowerOf2(left_constant));
     538             :     }
     539       29139 :   } else if (is_right_constant) {
     540       57150 :     if (base::bits::IsPowerOfTwo(right_constant)) {
     541       11034 :       return WordShl(left, WhichPowerOf2(right_constant));
     542             :     }
     543             :   }
     544       18105 :   return UncheckedCast<IntPtrT>(raw_assembler()->IntPtrMul(left, right));
     545             : }
     546             : 
     547      105055 : TNode<WordT> CodeAssembler::WordShl(SloppyTNode<WordT> value, int shift) {
     548      207391 :   return (shift != 0) ? WordShl(value, IntPtrConstant(shift)) : value;
     549             : }
     550             : 
     551       29032 : TNode<WordT> CodeAssembler::WordShr(SloppyTNode<WordT> value, int shift) {
     552       51847 :   return (shift != 0) ? WordShr(value, IntPtrConstant(shift)) : value;
     553             : }
     554             : 
     555        3038 : TNode<WordT> CodeAssembler::WordSar(SloppyTNode<WordT> value, int shift) {
     556        6075 :   return (shift != 0) ? WordSar(value, IntPtrConstant(shift)) : value;
     557             : }
     558             : 
     559       37632 : TNode<Word32T> CodeAssembler::Word32Shr(SloppyTNode<Word32T> value, int shift) {
     560       63832 :   return (shift != 0) ? Word32Shr(value, Int32Constant(shift)) : value;
     561             : }
     562             : 
     563       43480 : TNode<WordT> CodeAssembler::WordOr(SloppyTNode<WordT> left,
     564             :                                    SloppyTNode<WordT> right) {
     565             :   intptr_t left_constant;
     566       43480 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     567             :   intptr_t right_constant;
     568       43480 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     569       43480 :   if (is_left_constant) {
     570        3530 :     if (is_right_constant) {
     571        7058 :       return IntPtrConstant(left_constant | right_constant);
     572             :     }
     573           1 :     if (left_constant == 0) {
     574           1 :       return right;
     575             :     }
     576       39950 :   } else if (is_right_constant) {
     577        2522 :     if (right_constant == 0) {
     578           1 :       return left;
     579             :     }
     580             :   }
     581       39949 :   return UncheckedCast<WordT>(raw_assembler()->WordOr(left, right));
     582             : }
     583             : 
     584      288570 : TNode<WordT> CodeAssembler::WordAnd(SloppyTNode<WordT> left,
     585             :                                     SloppyTNode<WordT> right) {
     586             :   intptr_t left_constant;
     587      288570 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     588             :   intptr_t right_constant;
     589      288570 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     590      288570 :   if (is_left_constant) {
     591         393 :     if (is_right_constant) {
     592         786 :       return IntPtrConstant(left_constant & right_constant);
     593             :     }
     594             :   }
     595      288177 :   return UncheckedCast<WordT>(raw_assembler()->WordAnd(left, right));
     596             : }
     597             : 
     598         294 : TNode<WordT> CodeAssembler::WordXor(SloppyTNode<WordT> left,
     599             :                                     SloppyTNode<WordT> right) {
     600             :   intptr_t left_constant;
     601         294 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     602             :   intptr_t right_constant;
     603         294 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     604         294 :   if (is_left_constant) {
     605           1 :     if (is_right_constant) {
     606           2 :       return IntPtrConstant(left_constant ^ right_constant);
     607             :     }
     608             :   }
     609         293 :   return UncheckedCast<WordT>(raw_assembler()->WordXor(left, right));
     610             : }
     611             : 
     612      378208 : TNode<WordT> CodeAssembler::WordShl(SloppyTNode<WordT> left,
     613             :                                     SloppyTNode<IntegralT> right) {
     614             :   intptr_t left_constant;
     615      378208 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     616             :   intptr_t right_constant;
     617      378208 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     618      378208 :   if (is_left_constant) {
     619       11433 :     if (is_right_constant) {
     620       22754 :       return IntPtrConstant(left_constant << right_constant);
     621             :     }
     622      366775 :   } else if (is_right_constant) {
     623      366215 :     if (right_constant == 0) {
     624           0 :       return left;
     625             :     }
     626             :   }
     627      366831 :   return UncheckedCast<WordT>(raw_assembler()->WordShl(left, right));
     628             : }
     629             : 
     630       28267 : TNode<WordT> CodeAssembler::WordShr(SloppyTNode<WordT> left,
     631             :                                     SloppyTNode<IntegralT> right) {
     632             :   intptr_t left_constant;
     633       28267 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     634             :   intptr_t right_constant;
     635       28267 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     636       28267 :   if (is_left_constant) {
     637        3698 :     if (is_right_constant) {
     638        3698 :       return IntPtrConstant(static_cast<uintptr_t>(left_constant) >>
     639        7396 :                             right_constant);
     640             :     }
     641       24569 :   } else if (is_right_constant) {
     642       24065 :     if (right_constant == 0) {
     643           0 :       return left;
     644             :     }
     645             :   }
     646       24569 :   return UncheckedCast<WordT>(raw_assembler()->WordShr(left, right));
     647             : }
     648             : 
     649      158577 : TNode<WordT> CodeAssembler::WordSar(SloppyTNode<WordT> left,
     650             :                                     SloppyTNode<IntegralT> right) {
     651             :   intptr_t left_constant;
     652      158577 :   bool is_left_constant = ToIntPtrConstant(left, left_constant);
     653             :   intptr_t right_constant;
     654      158577 :   bool is_right_constant = ToIntPtrConstant(right, right_constant);
     655      158577 :   if (is_left_constant) {
     656           2 :     if (is_right_constant) {
     657           4 :       return IntPtrConstant(left_constant >> right_constant);
     658             :     }
     659      158575 :   } else if (is_right_constant) {
     660      158463 :     if (right_constant == 0) {
     661           1 :       return left;
     662             :     }
     663             :   }
     664      158574 :   return UncheckedCast<WordT>(raw_assembler()->WordSar(left, right));
     665             : }
     666             : 
     667       26616 : TNode<Word32T> CodeAssembler::Word32Or(SloppyTNode<Word32T> left,
     668             :                                        SloppyTNode<Word32T> right) {
     669             :   int32_t left_constant;
     670       26616 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     671             :   int32_t right_constant;
     672       26616 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     673       26616 :   if (is_left_constant) {
     674           0 :     if (is_right_constant) {
     675           0 :       return Int32Constant(left_constant | right_constant);
     676             :     }
     677           0 :     if (left_constant == 0) {
     678           0 :       return right;
     679             :     }
     680       26616 :   } else if (is_right_constant) {
     681          56 :     if (right_constant == 0) {
     682           0 :       return left;
     683             :     }
     684             :   }
     685       26616 :   return UncheckedCast<Word32T>(raw_assembler()->Word32Or(left, right));
     686             : }
     687             : 
     688      129428 : TNode<Word32T> CodeAssembler::Word32And(SloppyTNode<Word32T> left,
     689             :                                         SloppyTNode<Word32T> right) {
     690             :   int32_t left_constant;
     691      129428 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     692             :   int32_t right_constant;
     693      129428 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     694      129428 :   if (is_left_constant) {
     695          12 :     if (is_right_constant) {
     696           8 :       return Int32Constant(left_constant & right_constant);
     697             :     }
     698             :   }
     699      129424 :   return UncheckedCast<Word32T>(raw_assembler()->Word32And(left, right));
     700             : }
     701             : 
     702        2136 : TNode<Word32T> CodeAssembler::Word32Xor(SloppyTNode<Word32T> left,
     703             :                                         SloppyTNode<Word32T> right) {
     704             :   int32_t left_constant;
     705        2136 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     706             :   int32_t right_constant;
     707        2136 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     708        2136 :   if (is_left_constant) {
     709           4 :     if (is_right_constant) {
     710           8 :       return Int32Constant(left_constant ^ right_constant);
     711             :     }
     712             :   }
     713        2132 :   return UncheckedCast<Word32T>(raw_assembler()->Word32Xor(left, right));
     714             : }
     715             : 
     716        8512 : TNode<Word32T> CodeAssembler::Word32Shl(SloppyTNode<Word32T> left,
     717             :                                         SloppyTNode<Word32T> right) {
     718             :   int32_t left_constant;
     719        8512 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     720             :   int32_t right_constant;
     721        8512 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     722        8512 :   if (is_left_constant) {
     723           0 :     if (is_right_constant) {
     724           0 :       return Int32Constant(left_constant << right_constant);
     725             :     }
     726        8512 :   } else if (is_right_constant) {
     727        4872 :     if (right_constant == 0) {
     728           0 :       return left;
     729             :     }
     730             :   }
     731        8512 :   return UncheckedCast<Word32T>(raw_assembler()->Word32Shl(left, right));
     732             : }
     733             : 
     734       36588 : TNode<Word32T> CodeAssembler::Word32Shr(SloppyTNode<Word32T> left,
     735             :                                         SloppyTNode<Word32T> right) {
     736             :   int32_t left_constant;
     737       36588 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     738             :   int32_t right_constant;
     739       36588 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     740       36588 :   if (is_left_constant) {
     741           0 :     if (is_right_constant) {
     742           0 :       return Int32Constant(static_cast<uint32_t>(left_constant) >>
     743           0 :                            right_constant);
     744             :     }
     745       36588 :   } else if (is_right_constant) {
     746       34572 :     if (right_constant == 0) {
     747           0 :       return left;
     748             :     }
     749             :   }
     750       36588 :   return UncheckedCast<Word32T>(raw_assembler()->Word32Shr(left, right));
     751             : }
     752             : 
     753         392 : TNode<Word32T> CodeAssembler::Word32Sar(SloppyTNode<Word32T> left,
     754             :                                         SloppyTNode<Word32T> right) {
     755             :   int32_t left_constant;
     756         392 :   bool is_left_constant = ToInt32Constant(left, left_constant);
     757             :   int32_t right_constant;
     758         392 :   bool is_right_constant = ToInt32Constant(right, right_constant);
     759         392 :   if (is_left_constant) {
     760           0 :     if (is_right_constant) {
     761           0 :       return Int32Constant(left_constant >> right_constant);
     762             :     }
     763         392 :   } else if (is_right_constant) {
     764           0 :     if (right_constant == 0) {
     765           0 :       return left;
     766             :     }
     767             :   }
     768         392 :   return UncheckedCast<Word32T>(raw_assembler()->Word32Sar(left, right));
     769             : }
     770             : 
     771           0 : TNode<Word64T> CodeAssembler::Word64Or(SloppyTNode<Word64T> left,
     772             :                                        SloppyTNode<Word64T> right) {
     773             :   int64_t left_constant;
     774             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     775             :   int64_t right_constant;
     776             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     777           0 :   if (is_left_constant) {
     778           0 :     if (is_right_constant) {
     779           0 :       return Int64Constant(left_constant | right_constant);
     780             :     }
     781           0 :     if (left_constant == 0) {
     782           0 :       return right;
     783             :     }
     784           0 :   } else if (is_right_constant) {
     785           0 :     if (right_constant == 0) {
     786           0 :       return left;
     787             :     }
     788             :   }
     789           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64Or(left, right));
     790             : }
     791             : 
     792           0 : TNode<Word64T> CodeAssembler::Word64And(SloppyTNode<Word64T> left,
     793             :                                         SloppyTNode<Word64T> right) {
     794             :   int64_t left_constant;
     795             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     796             :   int64_t right_constant;
     797             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     798           0 :   if (is_left_constant) {
     799           0 :     if (is_right_constant) {
     800           0 :       return Int64Constant(left_constant & right_constant);
     801             :     }
     802             :   }
     803           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64And(left, right));
     804             : }
     805             : 
     806           0 : TNode<Word64T> CodeAssembler::Word64Xor(SloppyTNode<Word64T> left,
     807             :                                         SloppyTNode<Word64T> right) {
     808             :   int64_t left_constant;
     809             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     810             :   int64_t right_constant;
     811             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     812           0 :   if (is_left_constant) {
     813           0 :     if (is_right_constant) {
     814           0 :       return Int64Constant(left_constant ^ right_constant);
     815             :     }
     816             :   }
     817           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64Xor(left, right));
     818             : }
     819             : 
     820           0 : TNode<Word64T> CodeAssembler::Word64Shl(SloppyTNode<Word64T> left,
     821             :                                         SloppyTNode<Word64T> right) {
     822             :   int64_t left_constant;
     823             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     824             :   int64_t right_constant;
     825             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     826           0 :   if (is_left_constant) {
     827           0 :     if (is_right_constant) {
     828           0 :       return Int64Constant(left_constant << right_constant);
     829             :     }
     830           0 :   } else if (is_right_constant) {
     831           0 :     if (right_constant == 0) {
     832           0 :       return left;
     833             :     }
     834             :   }
     835           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64Shl(left, right));
     836             : }
     837             : 
     838           0 : TNode<Word64T> CodeAssembler::Word64Shr(SloppyTNode<Word64T> left,
     839             :                                         SloppyTNode<Word64T> right) {
     840             :   int64_t left_constant;
     841             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     842             :   int64_t right_constant;
     843             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     844           0 :   if (is_left_constant) {
     845           0 :     if (is_right_constant) {
     846           0 :       return Int64Constant(static_cast<uint64_t>(left_constant) >>
     847           0 :                            right_constant);
     848             :     }
     849           0 :   } else if (is_right_constant) {
     850           0 :     if (right_constant == 0) {
     851           0 :       return left;
     852             :     }
     853             :   }
     854           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64Shr(left, right));
     855             : }
     856             : 
     857           0 : TNode<Word64T> CodeAssembler::Word64Sar(SloppyTNode<Word64T> left,
     858             :                                         SloppyTNode<Word64T> right) {
     859             :   int64_t left_constant;
     860             :   bool is_left_constant = ToInt64Constant(left, left_constant);
     861             :   int64_t right_constant;
     862             :   bool is_right_constant = ToInt64Constant(right, right_constant);
     863           0 :   if (is_left_constant) {
     864           0 :     if (is_right_constant) {
     865           0 :       return Int64Constant(left_constant >> right_constant);
     866             :     }
     867           0 :   } else if (is_right_constant) {
     868           0 :     if (right_constant == 0) {
     869           0 :       return left;
     870             :     }
     871             :   }
     872           0 :   return UncheckedCast<Word64T>(raw_assembler()->Word64Sar(left, right));
     873             : }
     874             : 
     875             : #define CODE_ASSEMBLER_COMPARE(Name, ArgT, VarT, ToConstant, op)     \
     876             :   TNode<BoolT> CodeAssembler::Name(SloppyTNode<ArgT> left,           \
     877             :                                    SloppyTNode<ArgT> right) {        \
     878             :     VarT lhs, rhs;                                                   \
     879             :     if (ToConstant(left, lhs) && ToConstant(right, rhs)) {           \
     880             :       return BoolConstant(lhs op rhs);                               \
     881             :     }                                                                \
     882             :     return UncheckedCast<BoolT>(raw_assembler()->Name(left, right)); \
     883             :   }
     884             : 
     885        7336 : CODE_ASSEMBLER_COMPARE(IntPtrEqual, WordT, intptr_t, ToIntPtrConstant, ==)
     886     1115272 : CODE_ASSEMBLER_COMPARE(WordEqual, WordT, intptr_t, ToIntPtrConstant, ==)
     887       96072 : CODE_ASSEMBLER_COMPARE(WordNotEqual, WordT, intptr_t, ToIntPtrConstant, !=)
     888      427256 : CODE_ASSEMBLER_COMPARE(Word32Equal, Word32T, int32_t, ToInt32Constant, ==)
     889       74976 : CODE_ASSEMBLER_COMPARE(Word32NotEqual, Word32T, int32_t, ToInt32Constant, !=)
     890       15336 : CODE_ASSEMBLER_COMPARE(Word64Equal, Word64T, int64_t, ToInt64Constant, ==)
     891           0 : CODE_ASSEMBLER_COMPARE(Word64NotEqual, Word64T, int64_t, ToInt64Constant, !=)
     892             : #undef CODE_ASSEMBLER_COMPARE
     893             : 
     894      113233 : TNode<UintPtrT> CodeAssembler::ChangeUint32ToWord(SloppyTNode<Word32T> value) {
     895      113233 :   if (raw_assembler()->machine()->Is64()) {
     896             :     return UncheckedCast<UintPtrT>(
     897      113233 :         raw_assembler()->ChangeUint32ToUint64(value));
     898             :   }
     899             :   return ReinterpretCast<UintPtrT>(value);
     900             : }
     901             : 
     902      155300 : TNode<IntPtrT> CodeAssembler::ChangeInt32ToIntPtr(SloppyTNode<Word32T> value) {
     903      155300 :   if (raw_assembler()->machine()->Is64()) {
     904      155300 :     return ReinterpretCast<IntPtrT>(raw_assembler()->ChangeInt32ToInt64(value));
     905             :   }
     906             :   return ReinterpretCast<IntPtrT>(value);
     907             : }
     908             : 
     909        1456 : TNode<UintPtrT> CodeAssembler::ChangeFloat64ToUintPtr(
     910             :     SloppyTNode<Float64T> value) {
     911        1456 :   if (raw_assembler()->machine()->Is64()) {
     912             :     return ReinterpretCast<UintPtrT>(
     913        1456 :         raw_assembler()->ChangeFloat64ToUint64(value));
     914             :   }
     915             :   return ReinterpretCast<UintPtrT>(
     916           0 :       raw_assembler()->ChangeFloat64ToUint32(value));
     917             : }
     918             : 
     919        1736 : TNode<Float64T> CodeAssembler::ChangeUintPtrToFloat64(TNode<UintPtrT> value) {
     920        1736 :   if (raw_assembler()->machine()->Is64()) {
     921             :     // TODO(turbofan): Maybe we should introduce a ChangeUint64ToFloat64
     922             :     // machine operator to TurboFan here?
     923             :     return ReinterpretCast<Float64T>(
     924        1736 :         raw_assembler()->RoundUint64ToFloat64(value));
     925             :   }
     926             :   return ReinterpretCast<Float64T>(
     927           0 :       raw_assembler()->ChangeUint32ToFloat64(value));
     928             : }
     929             : 
     930        1128 : Node* CodeAssembler::RoundIntPtrToFloat64(Node* value) {
     931        1128 :   if (raw_assembler()->machine()->Is64()) {
     932        1128 :     return raw_assembler()->RoundInt64ToFloat64(value);
     933             :   }
     934           0 :   return raw_assembler()->ChangeInt32ToFloat64(value);
     935             : }
     936             : 
     937             : #define DEFINE_CODE_ASSEMBLER_UNARY_OP(name, ResType, ArgType) \
     938             :   TNode<ResType> CodeAssembler::name(SloppyTNode<ArgType> a) { \
     939             :     return UncheckedCast<ResType>(raw_assembler()->name(a));   \
     940             :   }
     941     2737393 : CODE_ASSEMBLER_UNARY_OP_LIST(DEFINE_CODE_ASSEMBLER_UNARY_OP)
     942             : #undef DEFINE_CODE_ASSEMBLER_UNARY_OP
     943             : 
     944       48868 : Node* CodeAssembler::Load(MachineType rep, Node* base,
     945             :                           LoadSensitivity needs_poisoning) {
     946       68188 :   return raw_assembler()->Load(rep, base, needs_poisoning);
     947             : }
     948             : 
     949     1377731 : Node* CodeAssembler::Load(MachineType rep, Node* base, Node* offset,
     950             :                           LoadSensitivity needs_poisoning) {
     951     1465971 :   return raw_assembler()->Load(rep, base, offset, needs_poisoning);
     952             : }
     953             : 
     954       19320 : Node* CodeAssembler::LoadFullTagged(Node* base,
     955             :                                     LoadSensitivity needs_poisoning) {
     956             :   return BitcastWordToTagged(
     957       19320 :       Load(MachineType::Pointer(), base, needs_poisoning));
     958             : }
     959             : 
     960       88240 : Node* CodeAssembler::LoadFullTagged(Node* base, Node* offset,
     961             :                                     LoadSensitivity needs_poisoning) {
     962             :   return BitcastWordToTagged(
     963       88240 :       Load(MachineType::Pointer(), base, offset, needs_poisoning));
     964             : }
     965             : 
     966         448 : Node* CodeAssembler::AtomicLoad(MachineType rep, Node* base, Node* offset) {
     967         448 :   return raw_assembler()->AtomicLoad(rep, base, offset);
     968             : }
     969             : 
     970      440608 : TNode<Object> CodeAssembler::LoadRoot(RootIndex root_index) {
     971      440608 :   if (RootsTable::IsImmortalImmovable(root_index)) {
     972             :     Handle<Object> root = isolate()->root_handle(root_index);
     973      440268 :     if (root->IsSmi()) {
     974           0 :       return SmiConstant(Smi::cast(*root));
     975             :     } else {
     976      440268 :       return HeapConstant(Handle<HeapObject>::cast(root));
     977             :     }
     978             :   }
     979             : 
     980             :   // TODO(jgruber): In theory we could generate better code for this by
     981             :   // letting the macro assembler decide how to load from the roots list. In most
     982             :   // cases, it would boil down to loading from a fixed kRootRegister offset.
     983             :   Node* isolate_root =
     984         340 :       ExternalConstant(ExternalReference::isolate_root(isolate()));
     985             :   int offset = IsolateData::root_slot_offset(root_index);
     986             :   return UncheckedCast<Object>(
     987         680 :       LoadFullTagged(isolate_root, IntPtrConstant(offset)));
     988             : }
     989             : 
     990           0 : Node* CodeAssembler::Store(Node* base, Node* value) {
     991             :   return raw_assembler()->Store(MachineRepresentation::kTagged, base, value,
     992           0 :                                 kFullWriteBarrier);
     993             : }
     994             : 
     995      244816 : void CodeAssembler::OptimizedStoreField(MachineRepresentation rep,
     996             :                                         TNode<HeapObject> object, int offset,
     997             :                                         Node* value,
     998             :                                         WriteBarrierKind write_barrier) {
     999      244816 :   raw_assembler()->OptimizedStoreField(rep, object, offset, value,
    1000      244816 :                                        write_barrier);
    1001      244816 : }
    1002       10828 : void CodeAssembler::OptimizedStoreMap(TNode<HeapObject> object,
    1003             :                                       TNode<Map> map) {
    1004       10828 :   raw_assembler()->OptimizedStoreMap(object, map);
    1005       10828 : }
    1006             : 
    1007       27476 : Node* CodeAssembler::Store(Node* base, Node* offset, Node* value) {
    1008             :   return raw_assembler()->Store(MachineRepresentation::kTagged, base, offset,
    1009       27476 :                                 value, kFullWriteBarrier);
    1010             : }
    1011             : 
    1012          56 : Node* CodeAssembler::StoreEphemeronKey(Node* base, Node* offset, Node* value) {
    1013             :   return raw_assembler()->Store(MachineRepresentation::kTagged, base, offset,
    1014          56 :                                 value, kEphemeronKeyWriteBarrier);
    1015             : }
    1016             : 
    1017        9016 : Node* CodeAssembler::StoreNoWriteBarrier(MachineRepresentation rep, Node* base,
    1018             :                                          Node* value) {
    1019       10080 :   return raw_assembler()->Store(rep, base, value, kNoWriteBarrier);
    1020             : }
    1021             : 
    1022      204190 : Node* CodeAssembler::StoreNoWriteBarrier(MachineRepresentation rep, Node* base,
    1023             :                                          Node* offset, Node* value) {
    1024      210070 :   return raw_assembler()->Store(rep, base, offset, value, kNoWriteBarrier);
    1025             : }
    1026             : 
    1027        1064 : Node* CodeAssembler::StoreFullTaggedNoWriteBarrier(Node* base,
    1028             :                                                    Node* tagged_value) {
    1029             :   return StoreNoWriteBarrier(MachineType::PointerRepresentation(), base,
    1030        1064 :                              BitcastTaggedToWord(tagged_value));
    1031             : }
    1032             : 
    1033        5880 : Node* CodeAssembler::StoreFullTaggedNoWriteBarrier(Node* base, Node* offset,
    1034             :                                                    Node* tagged_value) {
    1035             :   return StoreNoWriteBarrier(MachineType::PointerRepresentation(), base, offset,
    1036        5880 :                              BitcastTaggedToWord(tagged_value));
    1037             : }
    1038             : 
    1039         224 : Node* CodeAssembler::AtomicStore(MachineRepresentation rep, Node* base,
    1040             :                                  Node* offset, Node* value, Node* value_high) {
    1041         224 :   return raw_assembler()->AtomicStore(rep, base, offset, value, value_high);
    1042             : }
    1043             : 
    1044             : #define ATOMIC_FUNCTION(name)                                       \
    1045             :   Node* CodeAssembler::Atomic##name(MachineType type, Node* base,   \
    1046             :                                     Node* offset, Node* value,      \
    1047             :                                     Node* value_high) {             \
    1048             :     return raw_assembler()->Atomic##name(type, base, offset, value, \
    1049             :                                          value_high);               \
    1050             :   }
    1051         896 : ATOMIC_FUNCTION(Exchange)
    1052         896 : ATOMIC_FUNCTION(Add)
    1053         896 : ATOMIC_FUNCTION(Sub)
    1054         896 : ATOMIC_FUNCTION(And)
    1055         896 : ATOMIC_FUNCTION(Or)
    1056         896 : ATOMIC_FUNCTION(Xor)
    1057             : #undef ATOMIC_FUNCTION
    1058             : 
    1059         448 : Node* CodeAssembler::AtomicCompareExchange(MachineType type, Node* base,
    1060             :                                            Node* offset, Node* old_value,
    1061             :                                            Node* new_value,
    1062             :                                            Node* old_value_high,
    1063             :                                            Node* new_value_high) {
    1064             :   return raw_assembler()->AtomicCompareExchange(
    1065         448 :       type, base, offset, old_value, old_value_high, new_value, new_value_high);
    1066             : }
    1067             : 
    1068         112 : Node* CodeAssembler::StoreRoot(RootIndex root_index, Node* value) {
    1069             :   DCHECK(!RootsTable::IsImmortalImmovable(root_index));
    1070             :   Node* isolate_root =
    1071         112 :       ExternalConstant(ExternalReference::isolate_root(isolate()));
    1072             :   int offset = IsolateData::root_slot_offset(root_index);
    1073         112 :   return StoreFullTaggedNoWriteBarrier(isolate_root, IntPtrConstant(offset),
    1074         112 :                                        value);
    1075             : }
    1076             : 
    1077           0 : Node* CodeAssembler::Retain(Node* value) {
    1078           0 :   return raw_assembler()->Retain(value);
    1079             : }
    1080             : 
    1081           0 : Node* CodeAssembler::ChangeTaggedToCompressed(Node* tagged) {
    1082           0 :   return raw_assembler()->ChangeTaggedToCompressed(tagged);
    1083             : }
    1084             : 
    1085           0 : Node* CodeAssembler::ChangeCompressedToTagged(Node* compressed) {
    1086           0 :   return raw_assembler()->ChangeCompressedToTagged(compressed);
    1087             : }
    1088             : 
    1089       19056 : Node* CodeAssembler::Projection(int index, Node* value) {
    1090             :   DCHECK_LT(index, value->op()->ValueOutputCount());
    1091       19056 :   return raw_assembler()->Projection(index, value);
    1092             : }
    1093             : 
    1094        8864 : void CodeAssembler::GotoIfException(Node* node, Label* if_exception,
    1095             :                                     Variable* exception_var) {
    1096        8864 :   if (if_exception == nullptr) {
    1097             :     // If no handler is supplied, don't add continuations
    1098        3528 :     return;
    1099             :   }
    1100             : 
    1101             :   // No catch handlers should be active if we're using catch labels
    1102             :   DCHECK_EQ(state()->exception_handler_labels_.size(), 0);
    1103             :   DCHECK(!node->op()->HasProperty(Operator::kNoThrow));
    1104             : 
    1105        5336 :   Label success(this), exception(this, Label::kDeferred);
    1106        5336 :   success.MergeVariables();
    1107        5336 :   exception.MergeVariables();
    1108             : 
    1109       10672 :   raw_assembler()->Continuations(node, success.label_, exception.label_);
    1110             : 
    1111             :   Bind(&exception);
    1112        5336 :   const Operator* op = raw_assembler()->common()->IfException();
    1113             :   Node* exception_value = raw_assembler()->AddNode(op, node, node);
    1114        5336 :   if (exception_var != nullptr) {
    1115             :     exception_var->Bind(exception_value);
    1116             :   }
    1117             :   Goto(if_exception);
    1118             : 
    1119             :   Bind(&success);
    1120        5336 :   raw_assembler()->AddNode(raw_assembler()->common()->IfSuccess(), node);
    1121             : }
    1122             : 
    1123       57532 : TNode<HeapObject> CodeAssembler::OptimizedAllocate(TNode<IntPtrT> size,
    1124             :                                                    AllocationType allocation) {
    1125             :   return UncheckedCast<HeapObject>(
    1126       57532 :       raw_assembler()->OptimizedAllocate(size, allocation));
    1127             : }
    1128             : 
    1129      253350 : void CodeAssembler::HandleException(Node* node) {
    1130      752530 :   if (state_->exception_handler_labels_.size() == 0) return;
    1131             :   CodeAssemblerExceptionHandlerLabel* label =
    1132        7520 :       state_->exception_handler_labels_.back();
    1133             : 
    1134        7520 :   if (node->op()->HasProperty(Operator::kNoThrow)) {
    1135             :     return;
    1136             :   }
    1137             : 
    1138        7520 :   Label success(this), exception(this, Label::kDeferred);
    1139        7520 :   success.MergeVariables();
    1140        7520 :   exception.MergeVariables();
    1141             : 
    1142       15040 :   raw_assembler()->Continuations(node, success.label_, exception.label_);
    1143             : 
    1144             :   Bind(&exception);
    1145        7520 :   const Operator* op = raw_assembler()->common()->IfException();
    1146             :   Node* exception_value = raw_assembler()->AddNode(op, node, node);
    1147        7520 :   label->AddInputs({UncheckedCast<Object>(exception_value)});
    1148             :   Goto(label->plain_label());
    1149             : 
    1150             :   Bind(&success);
    1151        7520 :   raw_assembler()->AddNode(raw_assembler()->common()->IfSuccess(), node);
    1152             : }
    1153             : 
    1154             : namespace {
    1155             : template <size_t kMaxSize>
    1156      269374 : class NodeArray {
    1157             :  public:
    1158             :   void Add(Node* node) {
    1159             :     DCHECK_GT(kMaxSize, size());
    1160     1192778 :     *ptr_++ = node;
    1161             :   }
    1162             : 
    1163             :   Node* const* data() const { return arr_; }
    1164      269374 :   int size() const { return static_cast<int>(ptr_ - arr_); }
    1165             : 
    1166             :  private:
    1167             :   Node* arr_[kMaxSize];
    1168             :   Node** ptr_ = arr_;
    1169             : };
    1170             : }  // namespace
    1171             : 
    1172      140404 : TNode<Object> CodeAssembler::CallRuntimeImpl(
    1173             :     Runtime::FunctionId function, TNode<Object> context,
    1174             :     std::initializer_list<TNode<Object>> args) {
    1175      140404 :   int result_size = Runtime::FunctionForId(function)->result_size;
    1176             :   TNode<Code> centry =
    1177      280808 :       HeapConstant(CodeFactory::RuntimeCEntry(isolate(), result_size));
    1178      140404 :   return CallRuntimeWithCEntryImpl(function, centry, context, args);
    1179             : }
    1180             : 
    1181      140628 : TNode<Object> CodeAssembler::CallRuntimeWithCEntryImpl(
    1182             :     Runtime::FunctionId function, TNode<Code> centry, TNode<Object> context,
    1183             :     std::initializer_list<TNode<Object>> args) {
    1184             :   constexpr size_t kMaxNumArgs = 6;
    1185             :   DCHECK_GE(kMaxNumArgs, args.size());
    1186      140628 :   int argc = static_cast<int>(args.size());
    1187      140628 :   auto call_descriptor = Linkage::GetRuntimeCallDescriptor(
    1188             :       zone(), function, argc, Operator::kNoProperties,
    1189      140628 :       CallDescriptor::kNoFlags);
    1190             : 
    1191      140628 :   Node* ref = ExternalConstant(ExternalReference::Create(function));
    1192             :   Node* arity = Int32Constant(argc);
    1193             : 
    1194             :   NodeArray<kMaxNumArgs + 4> inputs;
    1195             :   inputs.Add(centry);
    1196      507452 :   for (auto arg : args) inputs.Add(arg);
    1197             :   inputs.Add(ref);
    1198             :   inputs.Add(arity);
    1199             :   inputs.Add(context);
    1200             : 
    1201      140628 :   CallPrologue();
    1202             :   Node* return_value =
    1203      140628 :       raw_assembler()->CallN(call_descriptor, inputs.size(), inputs.data());
    1204      140628 :   HandleException(return_value);
    1205      140628 :   CallEpilogue();
    1206      140628 :   return UncheckedCast<Object>(return_value);
    1207             : }
    1208             : 
    1209        7960 : void CodeAssembler::TailCallRuntimeImpl(
    1210             :     Runtime::FunctionId function, TNode<Int32T> arity, TNode<Object> context,
    1211             :     std::initializer_list<TNode<Object>> args) {
    1212        7960 :   int result_size = Runtime::FunctionForId(function)->result_size;
    1213             :   TNode<Code> centry =
    1214       15920 :       HeapConstant(CodeFactory::RuntimeCEntry(isolate(), result_size));
    1215        7960 :   return TailCallRuntimeWithCEntryImpl(function, arity, centry, context, args);
    1216             : }
    1217             : 
    1218        9024 : void CodeAssembler::TailCallRuntimeWithCEntryImpl(
    1219             :     Runtime::FunctionId function, TNode<Int32T> arity, TNode<Code> centry,
    1220             :     TNode<Object> context, std::initializer_list<TNode<Object>> args) {
    1221             :   constexpr size_t kMaxNumArgs = 6;
    1222             :   DCHECK_GE(kMaxNumArgs, args.size());
    1223        9024 :   int argc = static_cast<int>(args.size());
    1224        9024 :   auto call_descriptor = Linkage::GetRuntimeCallDescriptor(
    1225             :       zone(), function, argc, Operator::kNoProperties,
    1226        9024 :       CallDescriptor::kNoFlags);
    1227             : 
    1228        9024 :   Node* ref = ExternalConstant(ExternalReference::Create(function));
    1229             : 
    1230             :   NodeArray<kMaxNumArgs + 4> inputs;
    1231             :   inputs.Add(centry);
    1232       65384 :   for (auto arg : args) inputs.Add(arg);
    1233             :   inputs.Add(ref);
    1234             :   inputs.Add(arity);
    1235             :   inputs.Add(context);
    1236             : 
    1237        9024 :   raw_assembler()->TailCallN(call_descriptor, inputs.size(), inputs.data());
    1238        9024 : }
    1239             : 
    1240      112722 : Node* CodeAssembler::CallStubN(StubCallMode call_mode,
    1241             :                                const CallInterfaceDescriptor& descriptor,
    1242             :                                size_t result_size, int input_count,
    1243             :                                Node* const* inputs) {
    1244             :   DCHECK(call_mode == StubCallMode::kCallCodeObject ||
    1245             :          call_mode == StubCallMode::kCallBuiltinPointer);
    1246             : 
    1247             :   // implicit nodes are target and optionally context.
    1248      112722 :   int implicit_nodes = descriptor.HasContextParameter() ? 2 : 1;
    1249             :   DCHECK_LE(implicit_nodes, input_count);
    1250      112722 :   int argc = input_count - implicit_nodes;
    1251             :   DCHECK_LE(descriptor.GetParameterCount(), argc);
    1252             :   // Extra arguments not mentioned in the descriptor are passed on the stack.
    1253      112722 :   int stack_parameter_count = argc - descriptor.GetRegisterParameterCount();
    1254             :   DCHECK_LE(descriptor.GetStackParameterCount(), stack_parameter_count);
    1255             :   DCHECK_EQ(result_size, descriptor.GetReturnCount());
    1256             : 
    1257      112722 :   auto call_descriptor = Linkage::GetStubCallDescriptor(
    1258             :       zone(), descriptor, stack_parameter_count, CallDescriptor::kNoFlags,
    1259      112722 :       Operator::kNoProperties, call_mode);
    1260             : 
    1261      112722 :   CallPrologue();
    1262             :   Node* return_value =
    1263      112722 :       raw_assembler()->CallN(call_descriptor, input_count, inputs);
    1264      112722 :   HandleException(return_value);
    1265      112722 :   CallEpilogue();
    1266      112722 :   return return_value;
    1267             : }
    1268             : 
    1269        7504 : void CodeAssembler::TailCallStubImpl(const CallInterfaceDescriptor& descriptor,
    1270             :                                      TNode<Code> target, TNode<Object> context,
    1271             :                                      std::initializer_list<Node*> args) {
    1272             :   constexpr size_t kMaxNumArgs = 11;
    1273             :   DCHECK_GE(kMaxNumArgs, args.size());
    1274             :   DCHECK_EQ(descriptor.GetParameterCount(), args.size());
    1275        7504 :   auto call_descriptor = Linkage::GetStubCallDescriptor(
    1276             :       zone(), descriptor, descriptor.GetStackParameterCount(),
    1277        7504 :       CallDescriptor::kNoFlags, Operator::kNoProperties);
    1278             : 
    1279             :   NodeArray<kMaxNumArgs + 2> inputs;
    1280             :   inputs.Add(target);
    1281       56336 :   for (auto arg : args) inputs.Add(arg);
    1282        7504 :   if (descriptor.HasContextParameter()) {
    1283             :     inputs.Add(context);
    1284             :   }
    1285             : 
    1286        7504 :   raw_assembler()->TailCallN(call_descriptor, inputs.size(), inputs.data());
    1287        7504 : }
    1288             : 
    1289      110034 : Node* CodeAssembler::CallStubRImpl(StubCallMode call_mode,
    1290             :                                    const CallInterfaceDescriptor& descriptor,
    1291             :                                    size_t result_size, Node* target,
    1292             :                                    SloppyTNode<Object> context,
    1293             :                                    std::initializer_list<Node*> args) {
    1294             :   DCHECK(call_mode == StubCallMode::kCallCodeObject ||
    1295             :          call_mode == StubCallMode::kCallBuiltinPointer);
    1296             : 
    1297             :   constexpr size_t kMaxNumArgs = 10;
    1298             :   DCHECK_GE(kMaxNumArgs, args.size());
    1299             : 
    1300             :   NodeArray<kMaxNumArgs + 2> inputs;
    1301             :   inputs.Add(target);
    1302      614950 :   for (auto arg : args) inputs.Add(arg);
    1303      110034 :   if (descriptor.HasContextParameter()) {
    1304             :     inputs.Add(context);
    1305             :   }
    1306             : 
    1307             :   return CallStubN(call_mode, descriptor, result_size, inputs.size(),
    1308      110034 :                    inputs.data());
    1309             : }
    1310             : 
    1311        2184 : Node* CodeAssembler::TailCallStubThenBytecodeDispatchImpl(
    1312             :     const CallInterfaceDescriptor& descriptor, Node* target, Node* context,
    1313             :     std::initializer_list<Node*> args) {
    1314             :   constexpr size_t kMaxNumArgs = 6;
    1315             :   DCHECK_GE(kMaxNumArgs, args.size());
    1316             : 
    1317             :   DCHECK_LE(descriptor.GetParameterCount(), args.size());
    1318        2184 :   int argc = static_cast<int>(args.size());
    1319             :   // Extra arguments not mentioned in the descriptor are passed on the stack.
    1320        2184 :   int stack_parameter_count = argc - descriptor.GetRegisterParameterCount();
    1321             :   DCHECK_LE(descriptor.GetStackParameterCount(), stack_parameter_count);
    1322        2184 :   auto call_descriptor = Linkage::GetStubCallDescriptor(
    1323             :       zone(), descriptor, stack_parameter_count, CallDescriptor::kNoFlags,
    1324        2184 :       Operator::kNoProperties);
    1325             : 
    1326             :   NodeArray<kMaxNumArgs + 2> inputs;
    1327             :   inputs.Add(target);
    1328       17304 :   for (auto arg : args) inputs.Add(arg);
    1329             :   inputs.Add(context);
    1330             : 
    1331             :   return raw_assembler()->TailCallN(call_descriptor, inputs.size(),
    1332        2184 :                                     inputs.data());
    1333             : }
    1334             : 
    1335             : template <class... TArgs>
    1336       43680 : Node* CodeAssembler::TailCallBytecodeDispatch(
    1337             :     const CallInterfaceDescriptor& descriptor, Node* target, TArgs... args) {
    1338             :   DCHECK_EQ(descriptor.GetParameterCount(), sizeof...(args));
    1339             :   auto call_descriptor = Linkage::GetBytecodeDispatchCallDescriptor(
    1340       43680 :       zone(), descriptor, descriptor.GetStackParameterCount());
    1341             : 
    1342       43680 :   Node* nodes[] = {target, args...};
    1343       87360 :   CHECK_EQ(descriptor.GetParameterCount() + 1, arraysize(nodes));
    1344       43680 :   return raw_assembler()->TailCallN(call_descriptor, arraysize(nodes), nodes);
    1345             : }
    1346             : 
    1347             : // Instantiate TailCallBytecodeDispatch() for argument counts used by
    1348             : // CSA-generated code
    1349             : template V8_EXPORT_PRIVATE Node* CodeAssembler::TailCallBytecodeDispatch(
    1350             :     const CallInterfaceDescriptor& descriptor, Node* target, Node*, Node*,
    1351             :     Node*, Node*);
    1352             : 
    1353         504 : TNode<Object> CodeAssembler::TailCallJSCode(TNode<Code> code,
    1354             :                                             TNode<Context> context,
    1355             :                                             TNode<JSFunction> function,
    1356             :                                             TNode<Object> new_target,
    1357             :                                             TNode<Int32T> arg_count) {
    1358             :   JSTrampolineDescriptor descriptor;
    1359         504 :   auto call_descriptor = Linkage::GetStubCallDescriptor(
    1360             :       zone(), descriptor, descriptor.GetStackParameterCount(),
    1361         504 :       CallDescriptor::kFixedTargetRegister, Operator::kNoProperties);
    1362             : 
    1363        2520 :   Node* nodes[] = {code, function, new_target, arg_count, context};
    1364        1008 :   CHECK_EQ(descriptor.GetParameterCount() + 2, arraysize(nodes));
    1365             :   return UncheckedCast<Object>(
    1366        1008 :       raw_assembler()->TailCallN(call_descriptor, arraysize(nodes), nodes));
    1367             : }
    1368             : 
    1369           0 : Node* CodeAssembler::CallCFunctionN(Signature<MachineType>* signature,
    1370             :                                     int input_count, Node* const* inputs) {
    1371           0 :   auto call_descriptor = Linkage::GetSimplifiedCDescriptor(zone(), signature);
    1372           0 :   return raw_assembler()->CallN(call_descriptor, input_count, inputs);
    1373             : }
    1374             : 
    1375       12536 : Node* CodeAssembler::CallCFunction(
    1376             :     Node* function, MachineType return_type,
    1377             :     std::initializer_list<CodeAssembler::CFunctionArg> args) {
    1378       12536 :   return raw_assembler()->CallCFunction(function, return_type, args);
    1379             : }
    1380             : 
    1381         452 : Node* CodeAssembler::CallCFunctionWithCallerSavedRegisters(
    1382             :     Node* function, MachineType return_type, SaveFPRegsMode mode,
    1383             :     std::initializer_list<CodeAssembler::CFunctionArg> args) {
    1384             :   DCHECK(return_type.LessThanOrEqualPointerSize());
    1385             :   return raw_assembler()->CallCFunctionWithCallerSavedRegisters(
    1386         452 :       function, return_type, mode, args);
    1387             : }
    1388             : 
    1389     2058437 : void CodeAssembler::Goto(Label* label) {
    1390     2071757 :   label->MergeVariables();
    1391     4143514 :   raw_assembler()->Goto(label->label_);
    1392     2058437 : }
    1393             : 
    1394      527504 : void CodeAssembler::GotoIf(SloppyTNode<IntegralT> condition,
    1395             :                            Label* true_label) {
    1396      527504 :   Label false_label(this);
    1397      527504 :   Branch(condition, true_label, &false_label);
    1398             :   Bind(&false_label);
    1399      527504 : }
    1400             : 
    1401      174039 : void CodeAssembler::GotoIfNot(SloppyTNode<IntegralT> condition,
    1402             :                               Label* false_label) {
    1403      174039 :   Label true_label(this);
    1404      174039 :   Branch(condition, &true_label, false_label);
    1405             :   Bind(&true_label);
    1406      174039 : }
    1407             : 
    1408     1286807 : void CodeAssembler::Branch(SloppyTNode<IntegralT> condition, Label* true_label,
    1409             :                            Label* false_label) {
    1410             :   int32_t constant;
    1411     1286807 :   if (ToInt32Constant(condition, constant)) {
    1412         976 :     if ((true_label->is_used() || true_label->is_bound()) &&
    1413           0 :         (false_label->is_used() || false_label->is_bound())) {
    1414           0 :       return Goto(constant ? true_label : false_label);
    1415             :     }
    1416             :   }
    1417     1286807 :   true_label->MergeVariables();
    1418     1286807 :   false_label->MergeVariables();
    1419     1286807 :   return raw_assembler()->Branch(condition, true_label->label_,
    1420     1286807 :                                  false_label->label_);
    1421             : }
    1422             : 
    1423       27424 : void CodeAssembler::Branch(TNode<BoolT> condition,
    1424             :                            const std::function<void()>& true_body,
    1425             :                            const std::function<void()>& false_body) {
    1426             :   int32_t constant;
    1427       27424 :   if (ToInt32Constant(condition, constant)) {
    1428           0 :     return constant ? true_body() : false_body();
    1429             :   }
    1430             : 
    1431       27424 :   Label vtrue(this), vfalse(this);
    1432       27424 :   Branch(condition, &vtrue, &vfalse);
    1433             : 
    1434             :   Bind(&vtrue);
    1435             :   true_body();
    1436             : 
    1437             :   Bind(&vfalse);
    1438             :   false_body();
    1439             : }
    1440             : 
    1441        1592 : void CodeAssembler::Branch(TNode<BoolT> condition, Label* true_label,
    1442             :                            const std::function<void()>& false_body) {
    1443             :   int32_t constant;
    1444        1592 :   if (ToInt32Constant(condition, constant)) {
    1445        1272 :     return constant ? Goto(true_label) : false_body();
    1446             :   }
    1447             : 
    1448         956 :   Label vfalse(this);
    1449         956 :   Branch(condition, true_label, &vfalse);
    1450             :   Bind(&vfalse);
    1451             :   false_body();
    1452             : }
    1453             : 
    1454           0 : void CodeAssembler::Branch(TNode<BoolT> condition,
    1455             :                            const std::function<void()>& true_body,
    1456             :                            Label* false_label) {
    1457             :   int32_t constant;
    1458           0 :   if (ToInt32Constant(condition, constant)) {
    1459           0 :     return constant ? true_body() : Goto(false_label);
    1460             :   }
    1461             : 
    1462           0 :   Label vtrue(this);
    1463           0 :   Branch(condition, &vtrue, false_label);
    1464             :   Bind(&vtrue);
    1465             :   true_body();
    1466             : }
    1467             : 
    1468       10888 : void CodeAssembler::Switch(Node* index, Label* default_label,
    1469             :                            const int32_t* case_values, Label** case_labels,
    1470             :                            size_t case_count) {
    1471             :   RawMachineLabel** labels =
    1472       10888 :       new (zone()->New(sizeof(RawMachineLabel*) * case_count))
    1473       10888 :           RawMachineLabel*[case_count];
    1474      168480 :   for (size_t i = 0; i < case_count; ++i) {
    1475       78796 :     labels[i] = case_labels[i]->label_;
    1476       78796 :     case_labels[i]->MergeVariables();
    1477             :   }
    1478       10888 :   default_label->MergeVariables();
    1479       10888 :   return raw_assembler()->Switch(index, default_label->label_, case_values,
    1480       10888 :                                  labels, case_count);
    1481             : }
    1482             : 
    1483         112 : bool CodeAssembler::UnalignedLoadSupported(MachineRepresentation rep) const {
    1484         112 :   return raw_assembler()->machine()->UnalignedLoadSupported(rep);
    1485             : }
    1486         112 : bool CodeAssembler::UnalignedStoreSupported(MachineRepresentation rep) const {
    1487         112 :   return raw_assembler()->machine()->UnalignedStoreSupported(rep);
    1488             : }
    1489             : 
    1490             : // RawMachineAssembler delegate helpers:
    1491      375536 : Isolate* CodeAssembler::isolate() const { return raw_assembler()->isolate(); }
    1492             : 
    1493        9744 : Factory* CodeAssembler::factory() const { return isolate()->factory(); }
    1494             : 
    1495      131616 : Zone* CodeAssembler::zone() const { return raw_assembler()->zone(); }
    1496             : 
    1497           0 : bool CodeAssembler::IsExceptionHandlerActive() const {
    1498           0 :   return state_->exception_handler_labels_.size() != 0;
    1499             : }
    1500             : 
    1501           0 : RawMachineAssembler* CodeAssembler::raw_assembler() const {
    1502    23140669 :   return state_->raw_assembler_.get();
    1503             : }
    1504             : 
    1505             : // The core implementation of Variable is stored through an indirection so
    1506             : // that it can outlive the often block-scoped Variable declarations. This is
    1507             : // needed to ensure that variable binding and merging through phis can
    1508             : // properly be verified.
    1509             : class CodeAssemblerVariable::Impl : public ZoneObject {
    1510             :  public:
    1511             :   explicit Impl(MachineRepresentation rep, CodeAssemblerState::VariableId id)
    1512             :       :
    1513             : #if DEBUG
    1514             :         debug_info_(AssemblerDebugInfo(nullptr, nullptr, -1)),
    1515             : #endif
    1516             :         value_(nullptr),
    1517             :         rep_(rep),
    1518      609806 :         var_id_(id) {
    1519             :   }
    1520             : 
    1521             : #if DEBUG
    1522             :   AssemblerDebugInfo debug_info() const { return debug_info_; }
    1523             :   void set_debug_info(AssemblerDebugInfo debug_info) {
    1524             :     debug_info_ = debug_info;
    1525             :   }
    1526             : 
    1527             :   AssemblerDebugInfo debug_info_;
    1528             : #endif  // DEBUG
    1529             :   bool operator<(const CodeAssemblerVariable::Impl& other) const {
    1530     1181797 :     return var_id_ < other.var_id_;
    1531             :   }
    1532             :   Node* value_;
    1533             :   MachineRepresentation rep_;
    1534             :   CodeAssemblerState::VariableId var_id_;
    1535             : };
    1536             : 
    1537           0 : bool CodeAssemblerVariable::ImplComparator::operator()(
    1538             :     const CodeAssemblerVariable::Impl* a,
    1539             :     const CodeAssemblerVariable::Impl* b) const {
    1540           0 :   return *a < *b;
    1541             : }
    1542             : 
    1543      609806 : CodeAssemblerVariable::CodeAssemblerVariable(CodeAssembler* assembler,
    1544             :                                              MachineRepresentation rep)
    1545             :     : impl_(new (assembler->zone())
    1546             :                 Impl(rep, assembler->state()->NextVariableId())),
    1547     1219612 :       state_(assembler->state()) {
    1548      609806 :   state_->variables_.insert(impl_);
    1549      609806 : }
    1550             : 
    1551      270797 : CodeAssemblerVariable::CodeAssemblerVariable(CodeAssembler* assembler,
    1552             :                                              MachineRepresentation rep,
    1553             :                                              Node* initial_value)
    1554      270797 :     : CodeAssemblerVariable(assembler, rep) {
    1555             :   Bind(initial_value);
    1556      270797 : }
    1557             : 
    1558             : #if DEBUG
    1559             : CodeAssemblerVariable::CodeAssemblerVariable(CodeAssembler* assembler,
    1560             :                                              AssemblerDebugInfo debug_info,
    1561             :                                              MachineRepresentation rep)
    1562             :     : impl_(new (assembler->zone())
    1563             :                 Impl(rep, assembler->state()->NextVariableId())),
    1564             :       state_(assembler->state()) {
    1565             :   impl_->set_debug_info(debug_info);
    1566             :   state_->variables_.insert(impl_);
    1567             : }
    1568             : 
    1569             : CodeAssemblerVariable::CodeAssemblerVariable(CodeAssembler* assembler,
    1570             :                                              AssemblerDebugInfo debug_info,
    1571             :                                              MachineRepresentation rep,
    1572             :                                              Node* initial_value)
    1573             :     : CodeAssemblerVariable(assembler, debug_info, rep) {
    1574             :   impl_->set_debug_info(debug_info);
    1575             :   Bind(initial_value);
    1576             : }
    1577             : #endif  // DEBUG
    1578             : 
    1579     1219612 : CodeAssemblerVariable::~CodeAssemblerVariable() {
    1580      609806 :   state_->variables_.erase(impl_);
    1581      609806 : }
    1582             : 
    1583     1337408 : void CodeAssemblerVariable::Bind(Node* value) { impl_->value_ = value; }
    1584             : 
    1585     1485511 : Node* CodeAssemblerVariable::value() const {
    1586             : #if DEBUG
    1587             :   if (!IsBound()) {
    1588             :     std::stringstream str;
    1589             :     str << "#Use of unbound variable:"
    1590             :         << "#\n    Variable:      " << *this << "#\n    Current Block: ";
    1591             :     state_->PrintCurrentBlock(str);
    1592             :     FATAL("%s", str.str().c_str());
    1593             :   }
    1594             :   if (!state_->InsideBlock()) {
    1595             :     std::stringstream str;
    1596             :     str << "#Accessing variable value outside a block:"
    1597             :         << "#\n    Variable:      " << *this;
    1598             :     FATAL("%s", str.str().c_str());
    1599             :   }
    1600             : #endif  // DEBUG
    1601     1485511 :   return impl_->value_;
    1602             : }
    1603             : 
    1604           0 : MachineRepresentation CodeAssemblerVariable::rep() const { return impl_->rep_; }
    1605             : 
    1606      146757 : bool CodeAssemblerVariable::IsBound() const { return impl_->value_ != nullptr; }
    1607             : 
    1608           0 : std::ostream& operator<<(std::ostream& os,
    1609             :                          const CodeAssemblerVariable::Impl& impl) {
    1610             : #if DEBUG
    1611             :   AssemblerDebugInfo info = impl.debug_info();
    1612             :   if (info.name) os << "V" << info;
    1613             : #endif  // DEBUG
    1614           0 :   return os;
    1615             : }
    1616             : 
    1617           0 : std::ostream& operator<<(std::ostream& os,
    1618             :                          const CodeAssemblerVariable& variable) {
    1619             :   os << *variable.impl_;
    1620           0 :   return os;
    1621             : }
    1622             : 
    1623     3621352 : CodeAssemblerLabel::CodeAssemblerLabel(CodeAssembler* assembler,
    1624             :                                        size_t vars_count,
    1625             :                                        CodeAssemblerVariable* const* vars,
    1626             :                                        CodeAssemblerLabel::Type type)
    1627             :     : bound_(false),
    1628             :       merge_count_(0),
    1629             :       state_(assembler->state()),
    1630     7242704 :       label_(nullptr) {
    1631             :   void* buffer = assembler->zone()->New(sizeof(RawMachineLabel));
    1632             :   label_ = new (buffer)
    1633             :       RawMachineLabel(type == kDeferred ? RawMachineLabel::kDeferred
    1634     7242704 :                                         : RawMachineLabel::kNonDeferred);
    1635     4048928 :   for (size_t i = 0; i < vars_count; ++i) {
    1636      213788 :     variable_phis_[vars[i]->impl_] = nullptr;
    1637             :   }
    1638     3621352 : }
    1639             : 
    1640     7242704 : CodeAssemblerLabel::~CodeAssemblerLabel() { label_->~RawMachineLabel(); }
    1641             : 
    1642     4760767 : void CodeAssemblerLabel::MergeVariables() {
    1643     4760767 :   ++merge_count_;
    1644    25266321 :   for (CodeAssemblerVariable::Impl* var : state_->variables_) {
    1645             :     size_t count = 0;
    1646    15744787 :     Node* node = var->value_;
    1647    15744787 :     if (node != nullptr) {
    1648             :       auto i = variable_merges_.find(var);
    1649    11381221 :       if (i != variable_merges_.end()) {
    1650     3955109 :         i->second.push_back(node);
    1651             :         count = i->second.size();
    1652             :       } else {
    1653             :         count = 1;
    1654    14852224 :         variable_merges_[var] = std::vector<Node*>(1, node);
    1655             :       }
    1656             :     }
    1657             :     // If the following asserts, then you've jumped to a label without a bound
    1658             :     // variable along that path that expects to merge its value into a phi.
    1659             :     DCHECK(variable_phis_.find(var) == variable_phis_.end() ||
    1660             :            count == merge_count_);
    1661             :     USE(count);
    1662             : 
    1663             :     // If the label is already bound, we already know the set of variables to
    1664             :     // merge and phi nodes have already been created.
    1665    15744787 :     if (bound_) {
    1666             :       auto phi = variable_phis_.find(var);
    1667      719152 :       if (phi != variable_phis_.end()) {
    1668             :         DCHECK_NOT_NULL(phi->second);
    1669      424416 :         state_->raw_assembler_->AppendPhiInput(phi->second, node);
    1670             :       } else {
    1671             :         auto i = variable_merges_.find(var);
    1672             :         if (i != variable_merges_.end()) {
    1673             :           // If the following assert fires, then you've declared a variable that
    1674             :           // has the same bound value along all paths up until the point you
    1675             :           // bound this label, but then later merged a path with a new value for
    1676             :           // the variable after the label bind (it's not possible to add phis to
    1677             :           // the bound label after the fact, just make sure to list the variable
    1678             :           // in the label's constructor's list of merged variables).
    1679             : #if DEBUG
    1680             :           if (find_if(i->second.begin(), i->second.end(),
    1681             :                       [node](Node* e) -> bool { return node != e; }) !=
    1682             :               i->second.end()) {
    1683             :             std::stringstream str;
    1684             :             str << "Unmerged variable found when jumping to block. \n"
    1685             :                 << "#    Variable:      " << *var;
    1686             :             if (bound_) {
    1687             :               str << "\n#    Target block:  " << *label_->block();
    1688             :             }
    1689             :             str << "\n#    Current Block: ";
    1690             :             state_->PrintCurrentBlock(str);
    1691             :             FATAL("%s", str.str().c_str());
    1692             :           }
    1693             : #endif  // DEBUG
    1694             :         }
    1695             :       }
    1696             :     }
    1697             :   }
    1698     4760767 : }
    1699             : 
    1700             : #if DEBUG
    1701             : void CodeAssemblerLabel::Bind(AssemblerDebugInfo debug_info) {
    1702             :   if (bound_) {
    1703             :     std::stringstream str;
    1704             :     str << "Cannot bind the same label twice:"
    1705             :         << "\n#    current:  " << debug_info
    1706             :         << "\n#    previous: " << *label_->block();
    1707             :     FATAL("%s", str.str().c_str());
    1708             :   }
    1709             :   if (FLAG_enable_source_at_csa_bind) {
    1710             :     state_->raw_assembler_->SetSourcePosition(debug_info.file, debug_info.line);
    1711             :   }
    1712             :   state_->raw_assembler_->Bind(label_, debug_info);
    1713             :   UpdateVariablesAfterBind();
    1714             : }
    1715             : #endif  // DEBUG
    1716             : 
    1717     3520040 : void CodeAssemblerLabel::Bind() {
    1718             :   DCHECK(!bound_);
    1719     7040080 :   state_->raw_assembler_->Bind(label_);
    1720     3520040 :   UpdateVariablesAfterBind();
    1721     3520040 : }
    1722             : 
    1723     3520040 : void CodeAssemblerLabel::UpdateVariablesAfterBind() {
    1724             :   // Make sure that all variables that have changed along any path up to this
    1725             :   // point are marked as merge variables.
    1726    17416663 :   for (auto var : state_->variables_) {
    1727             :     Node* shared_value = nullptr;
    1728             :     auto i = variable_merges_.find(var);
    1729    10376583 :     if (i != variable_merges_.end()) {
    1730    17539205 :       for (auto value : i->second) {
    1731             :         DCHECK_NOT_NULL(value);
    1732    10297869 :         if (value != shared_value) {
    1733     7881091 :           if (shared_value == nullptr) {
    1734             :             shared_value = value;
    1735             :           } else {
    1736      639755 :             variable_phis_[var] = nullptr;
    1737             :           }
    1738             :         }
    1739             :       }
    1740             :     }
    1741             :   }
    1742             : 
    1743     4080897 :   for (auto var : variable_phis_) {
    1744      560857 :     CodeAssemblerVariable::Impl* var_impl = var.first;
    1745             :     auto i = variable_merges_.find(var_impl);
    1746             : #if DEBUG
    1747             :     bool not_found = i == variable_merges_.end();
    1748             :     if (not_found || i->second.size() != merge_count_) {
    1749             :       std::stringstream str;
    1750             :       str << "A variable that has been marked as beeing merged at the label"
    1751             :           << "\n# doesn't have a bound value along all of the paths that "
    1752             :           << "\n# have been merged into the label up to this point."
    1753             :           << "\n#"
    1754             :           << "\n# This can happen in the following cases:"
    1755             :           << "\n# - By explicitly marking it so in the label constructor"
    1756             :           << "\n# - By having seen different bound values at branches"
    1757             :           << "\n#"
    1758             :           << "\n# Merge count:     expected=" << merge_count_
    1759             :           << " vs. found=" << (not_found ? 0 : i->second.size())
    1760             :           << "\n# Variable:      " << *var_impl
    1761             :           << "\n# Current Block: " << *label_->block();
    1762             :       FATAL("%s", str.str().c_str());
    1763             :     }
    1764             : #endif  // DEBUG
    1765      560857 :     Node* phi = state_->raw_assembler_->Phi(
    1766     1121714 :         var.first->rep_, static_cast<int>(merge_count_), &(i->second[0]));
    1767      560857 :     variable_phis_[var_impl] = phi;
    1768             :   }
    1769             : 
    1770             :   // Bind all variables to a merge phi, the common value along all paths or
    1771             :   // null.
    1772    17416663 :   for (auto var : state_->variables_) {
    1773             :     auto i = variable_phis_.find(var);
    1774    10376583 :     if (i != variable_phis_.end()) {
    1775      560857 :       var->value_ = i->second;
    1776             :     } else {
    1777             :       auto j = variable_merges_.find(var);
    1778    16496205 :       if (j != variable_merges_.end() && j->second.size() == merge_count_) {
    1779    13271534 :         var->value_ = j->second.back();
    1780             :       } else {
    1781     3179959 :         var->value_ = nullptr;
    1782             :       }
    1783             :     }
    1784             :   }
    1785             : 
    1786     3520040 :   bound_ = true;
    1787     3520040 : }
    1788             : 
    1789     1284512 : void CodeAssemblerParameterizedLabelBase::AddInputs(std::vector<Node*> inputs) {
    1790     1284512 :   if (!phi_nodes_.empty()) {
    1791             :     DCHECK_EQ(inputs.size(), phi_nodes_.size());
    1792      129388 :     for (size_t i = 0; i < inputs.size(); ++i) {
    1793             :       // We use {nullptr} as a sentinel for an uninitialized value.
    1794       61916 :       if (phi_nodes_[i] == nullptr) continue;
    1795      123824 :       state_->raw_assembler_->AppendPhiInput(phi_nodes_[i], inputs[i]);
    1796             :     }
    1797             :   } else {
    1798             :     DCHECK_EQ(inputs.size(), phi_inputs_.size());
    1799    10159332 :     for (size_t i = 0; i < inputs.size(); ++i) {
    1800     4440188 :       phi_inputs_[i].push_back(inputs[i]);
    1801             :     }
    1802             :   }
    1803     1284512 : }
    1804             : 
    1805     3996140 : Node* CodeAssemblerParameterizedLabelBase::CreatePhi(
    1806             :     MachineRepresentation rep, const std::vector<Node*>& inputs) {
    1807     8418784 :   for (Node* input : inputs) {
    1808             :     // We use {nullptr} as a sentinel for an uninitialized value. We must not
    1809             :     // create phi nodes for these.
    1810     4439572 :     if (input == nullptr) return nullptr;
    1811             :   }
    1812     3979212 :   return state_->raw_assembler_->Phi(rep, static_cast<int>(inputs.size()),
    1813     3979212 :                                      &inputs.front());
    1814             : }
    1815             : 
    1816     1194512 : const std::vector<Node*>& CodeAssemblerParameterizedLabelBase::CreatePhis(
    1817             :     std::vector<MachineRepresentation> representations) {
    1818             :   DCHECK(is_used());
    1819             :   DCHECK(phi_nodes_.empty());
    1820     1194512 :   phi_nodes_.reserve(phi_inputs_.size());
    1821             :   DCHECK_EQ(representations.size(), phi_inputs_.size());
    1822     9186792 :   for (size_t i = 0; i < phi_inputs_.size(); ++i) {
    1823     7992280 :     phi_nodes_.push_back(CreatePhi(representations[i], phi_inputs_[i]));
    1824             :   }
    1825     1194512 :   return phi_nodes_;
    1826             : }
    1827             : 
    1828           0 : void CodeAssemblerState::PushExceptionHandler(
    1829             :     CodeAssemblerExceptionHandlerLabel* label) {
    1830         968 :   exception_handler_labels_.push_back(label);
    1831           0 : }
    1832             : 
    1833           0 : void CodeAssemblerState::PopExceptionHandler() {
    1834             :   exception_handler_labels_.pop_back();
    1835           0 : }
    1836             : 
    1837         740 : CodeAssemblerScopedExceptionHandler::CodeAssemblerScopedExceptionHandler(
    1838             :     CodeAssembler* assembler, CodeAssemblerExceptionHandlerLabel* label)
    1839         740 :     : has_handler_(label != nullptr),
    1840             :       assembler_(assembler),
    1841             :       compatibility_label_(nullptr),
    1842        1480 :       exception_(nullptr) {
    1843         740 :   if (has_handler_) {
    1844             :     assembler_->state()->PushExceptionHandler(label);
    1845             :   }
    1846         740 : }
    1847             : 
    1848         564 : CodeAssemblerScopedExceptionHandler::CodeAssemblerScopedExceptionHandler(
    1849             :     CodeAssembler* assembler, CodeAssemblerLabel* label,
    1850             :     TypedCodeAssemblerVariable<Object>* exception)
    1851         564 :     : has_handler_(label != nullptr),
    1852             :       assembler_(assembler),
    1853             :       compatibility_label_(label),
    1854        1128 :       exception_(exception) {
    1855         564 :   if (has_handler_) {
    1856         456 :     label_ = base::make_unique<CodeAssemblerExceptionHandlerLabel>(
    1857             :         assembler, CodeAssemblerLabel::kDeferred);
    1858         228 :     assembler_->state()->PushExceptionHandler(label_.get());
    1859             :   }
    1860         564 : }
    1861             : 
    1862        2608 : CodeAssemblerScopedExceptionHandler::~CodeAssemblerScopedExceptionHandler() {
    1863        1304 :   if (has_handler_) {
    1864         968 :     assembler_->state()->PopExceptionHandler();
    1865             :   }
    1866        1304 :   if (label_ && label_->is_used()) {
    1867         456 :     CodeAssembler::Label skip(assembler_);
    1868         228 :     bool inside_block = assembler_->state()->InsideBlock();
    1869         228 :     if (inside_block) {
    1870         228 :       assembler_->Goto(&skip);
    1871             :     }
    1872             :     TNode<Object> e;
    1873             :     assembler_->Bind(label_.get(), &e);
    1874         228 :     *exception_ = e;
    1875         228 :     assembler_->Goto(compatibility_label_);
    1876         228 :     if (inside_block) {
    1877             :       assembler_->Bind(&skip);
    1878             :     }
    1879             :   }
    1880        1304 : }
    1881             : 
    1882             : }  // namespace compiler
    1883             : 
    1884           0 : Address CheckObjectType(Address raw_value, Address raw_type,
    1885             :                         Address raw_location) {
    1886             : #ifdef DEBUG
    1887             :   Object value(raw_value);
    1888             :   Smi type(raw_type);
    1889             :   String location = String::cast(Object(raw_location));
    1890             :   const char* expected;
    1891             :   switch (static_cast<ObjectType>(type->value())) {
    1892             : #define TYPE_CASE(Name)                                  \
    1893             :   case ObjectType::k##Name:                              \
    1894             :     if (value->Is##Name()) return Smi::FromInt(0).ptr(); \
    1895             :     expected = #Name;                                    \
    1896             :     break;
    1897             : #define TYPE_STRUCT_CASE(NAME, Name, name)               \
    1898             :   case ObjectType::k##Name:                              \
    1899             :     if (value->Is##Name()) return Smi::FromInt(0).ptr(); \
    1900             :     expected = #Name;                                    \
    1901             :     break;
    1902             : 
    1903             :     TYPE_CASE(Object)
    1904             :     OBJECT_TYPE_LIST(TYPE_CASE)
    1905             :     HEAP_OBJECT_TYPE_LIST(TYPE_CASE)
    1906             :     STRUCT_LIST(TYPE_STRUCT_CASE)
    1907             : #undef TYPE_CASE
    1908             : #undef TYPE_STRUCT_CASE
    1909             :   }
    1910             :   std::stringstream value_description;
    1911             :   value->Print(value_description);
    1912             :   V8_Fatal(__FILE__, __LINE__,
    1913             :            "Type cast failed in %s\n"
    1914             :            "  Expected %s but found %s",
    1915             :            location->ToAsciiArray(), expected, value_description.str().c_str());
    1916             : #else
    1917           0 :   UNREACHABLE();
    1918             : #endif
    1919             : }
    1920             : 
    1921             : }  // namespace internal
    1922      122036 : }  // namespace v8

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