v8::internal::compiler::JSGraph Class Reference

#include <js-graph.h>

Inheritance diagram for v8::internal::compiler::JSGraph:

Collaboration diagram for v8::internal::compiler::JSGraph:

Public Member Functions
	JSGraph (Graph *graph, CommonOperatorBuilder *common, JSOperatorBuilder *javascript, Typer *typer, MachineOperatorBuilder *machine)
Node *	CEntryStubConstant ()
Node *	UndefinedConstant ()
Node *	TheHoleConstant ()
Node *	TrueConstant ()
Node *	FalseConstant ()
Node *	NullConstant ()
Node *	ZeroConstant ()
Node *	OneConstant ()
Node *	NaNConstant ()
Node *	HeapConstant (Unique< Object > value)
Node *	HeapConstant (Handle< Object > value)
Node *	Constant (Handle< Object > value)
Node *	Constant (double value)
Node *	Constant (int32_t value)
Node *	Int32Constant (int32_t value)
Node *	Uint32Constant (uint32_t value)
Node *	Float32Constant (float value)
Node *	Float64Constant (double value)
Node *	ExternalConstant (ExternalReference ref)
Node *	SmiConstant (int32_t immediate)
JSOperatorBuilder *	javascript ()
CommonOperatorBuilder *	common ()
MachineOperatorBuilder *	machine ()
Graph *	graph ()
Zone *	zone ()
Isolate *	isolate ()
Public Member Functions inherited from v8::internal::ZoneObject
	INLINE (void *operator new(size_t size, Zone *zone))
void	operator delete (void *, size_t)
void	operator delete (void *pointer, Zone *zone)

Private Member Functions
Node *	ImmovableHeapConstant (Handle< Object > value)
Node *	NumberConstant (double value)
Node *	NewNode (const Operator *op)
Factory *	factory ()

Private Attributes
Graph *	graph_
CommonOperatorBuilder *	common_
JSOperatorBuilder *	javascript_
Typer *	typer_
MachineOperatorBuilder *	machine_
SetOncePointer< Node >	c_entry_stub_constant_
SetOncePointer< Node >	undefined_constant_
SetOncePointer< Node >	the_hole_constant_
SetOncePointer< Node >	true_constant_
SetOncePointer< Node >	false_constant_
SetOncePointer< Node >	null_constant_
SetOncePointer< Node >	zero_constant_
SetOncePointer< Node >	one_constant_
SetOncePointer< Node >	nan_constant_
CommonNodeCache	cache_

Detailed Description

Definition at line 24 of file js-graph.h.

Constructor & Destructor Documentation

JSGraph()

v8::internal::compiler::JSGraph::JSGraph ( Graph *  graph, CommonOperatorBuilder *  common, JSOperatorBuilder *  javascript, Typer *  typer, MachineOperatorBuilder *  machine  )

inline

Definition at line 26 of file js-graph.h.

      : graph_(graph),
        common_(common),
        javascript_(javascript),
        typer_(typer),
        machine_(machine),
        cache_(zone()) {}

Member Function Documentation

CEntryStubConstant()

Node * v8::internal::compiler::JSGraph::CEntryStubConstant

(

)

Definition at line 26 of file js-graph.cc.

                                  {
  if (!c_entry_stub_constant_.is_set()) {
    c_entry_stub_constant_.set(
        ImmovableHeapConstant(CEntryStub(isolate(), 1).GetCode()));
  }
  return c_entry_stub_constant_.get();
}

References c_entry_stub_constant_, v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), isolate(), and v8::internal::SetOncePointer< T >::set().

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common()

CommonOperatorBuilder* v8::internal::compiler::JSGraph::common ( )

inline

Definition at line 87 of file js-graph.h.

{ return common_; }

References common_.

Referenced by v8::internal::compiler::JSInliner::AddClosureToFrameState(), v8::internal::compiler::SimplifiedLowering::common(), v8::internal::compiler::JSGenericLowering::common(), v8::internal::compiler::JSInliner::CreateArgumentsAdaptorFrameState(), ExternalConstant(), Float32Constant(), Float64Constant(), HeapConstant(), ImmovableHeapConstant(), Int32Constant(), NumberConstant(), v8::internal::compiler::JSInliner::TryInlineCall(), and v8::internal::compiler::Inlinee::UnifyReturn().

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Constant() [1/3]

Node * v8::internal::compiler::JSGraph::Constant

(

double

value

)

Definition at line 136 of file js-graph.cc.

                                    {
  if (bit_cast<int64_t>(value) == bit_cast<int64_t>(0.0)) return ZeroConstant();
  if (bit_cast<int64_t>(value) == bit_cast<int64_t>(1.0)) return OneConstant();
  return NumberConstant(value);
}

References NumberConstant(), OneConstant(), and ZeroConstant().

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Constant() [2/3]

Node * v8::internal::compiler::JSGraph::Constant

(

Handle< Object >

value

)

Definition at line 115 of file js-graph.cc.

                                            {
  // Dereference the handle to determine if a number constant or other
  // canonicalized node can be used.
  if (value->IsNumber()) {
    return Constant(value->Number());
  } else if (value->IsUndefined()) {
    return UndefinedConstant();
  } else if (value->IsTrue()) {
    return TrueConstant();
  } else if (value->IsFalse()) {
    return FalseConstant();
  } else if (value->IsNull()) {
    return NullConstant();
  } else if (value->IsTheHole()) {
    return TheHoleConstant();
  } else {
    return HeapConstant(value);
  }
}

References FalseConstant(), HeapConstant(), NullConstant(), TheHoleConstant(), TrueConstant(), and UndefinedConstant().

Referenced by v8::internal::compiler::AstGraphBuilder::BuildThrowReferenceError(), v8::internal::compiler::AstGraphBuilder::BuildVariableAssignment(), v8::internal::compiler::AstGraphBuilder::BuildVariableDelete(), v8::internal::compiler::AstGraphBuilder::BuildVariableLoad(), v8::internal::compiler::RepresentationChanger::GetTaggedRepresentationFor(), v8::internal::compiler::JSContextSpecializer::ReduceJSLoadContext(), v8::internal::compiler::JSContextSpecializer::ReduceJSStoreContext(), SmiConstant(), v8::internal::compiler::JSContextSpecializer::SpecializeToContext(), and v8::internal::compiler::AstGraphBuilder::VisitDeclarations().

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Constant() [3/3]

Node * v8::internal::compiler::JSGraph::Constant

(

int32_t

value

)

Definition at line 143 of file js-graph.cc.

                                     {
  if (value == 0) return ZeroConstant();
  if (value == 1) return OneConstant();
  return NumberConstant(value);
}

References NumberConstant(), OneConstant(), and ZeroConstant().

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ExternalConstant()

Node * v8::internal::compiler::JSGraph::ExternalConstant

(

ExternalReference

ref

)

Definition at line 183 of file js-graph.cc.

                                                           {
  Node** loc = cache_.FindExternalConstant(reference);
  if (*loc == NULL) {
    *loc = NewNode(common()->ExternalConstant(reference));
  }
  return *loc;
}

References cache_, common(), NewNode(), and NULL.

Referenced by v8::internal::compiler::JSGenericLowering::ExternalConstant().

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factory()

Factory* v8::internal::compiler::JSGraph::factory ( )

inlineprivate

Definition at line 116 of file js-graph.h.

{ return isolate()->factory(); }

References v8::internal::Isolate::factory(), and isolate().

Referenced by FalseConstant(), NullConstant(), TheHoleConstant(), TrueConstant(), and UndefinedConstant().

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FalseConstant()

Node * v8::internal::compiler::JSGraph::FalseConstant

(

)

Definition at line 60 of file js-graph.cc.

                             {
  if (!false_constant_.is_set()) {
    false_constant_.set(ImmovableHeapConstant(factory()->false_value()));
  }
  return false_constant_.get();
}

References factory(), false_constant_, v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), and v8::internal::SetOncePointer< T >::set().

Referenced by v8::internal::compiler::AstGraphBuilder::BuildVariableDelete(), Constant(), v8::internal::compiler::RepresentationChanger::GetTaggedRepresentationFor(), and v8::internal::compiler::RepresentationSelector::VisitNode().

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Float32Constant()

Node * v8::internal::compiler::JSGraph::Float32Constant

(

float

value

)

Definition at line 168 of file js-graph.cc.

                                          {
  // TODO(turbofan): cache float32 constants.
  return NewNode(common()->Float32Constant(value));
}

References common(), and NewNode().

Referenced by v8::internal::compiler::RepresentationChanger::GetFloat32RepresentationFor().

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Float64Constant()

Node * v8::internal::compiler::JSGraph::Float64Constant

(

double

value

)

Definition at line 174 of file js-graph.cc.

                                           {
  Node** loc = cache_.FindFloat64Constant(value);
  if (*loc == NULL) {
    *loc = NewNode(common()->Float64Constant(value));
  }
  return *loc;
}

References cache_, common(), NewNode(), and NULL.

Referenced by v8::internal::compiler::RepresentationChanger::GetFloat64RepresentationFor().

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graph()

Graph* v8::internal::compiler::JSGraph::graph ( )

inline

Definition at line 89 of file js-graph.h.

{ return graph_; }

References graph_.

Referenced by v8::internal::compiler::JSInliner::CreateArgumentsAdaptorFrameState(), v8::internal::compiler::RepresentationChanger::GetBitRepresentationFor(), v8::internal::compiler::RepresentationChanger::GetFloat32RepresentationFor(), v8::internal::compiler::RepresentationChanger::GetFloat64RepresentationFor(), v8::internal::compiler::RepresentationChanger::GetTaggedRepresentationFor(), v8::internal::compiler::RepresentationChanger::GetWord32RepresentationFor(), v8::internal::compiler::SimplifiedLowering::graph(), v8::internal::compiler::JSGenericLowering::graph(), v8::internal::compiler::JSInliner::Inline(), v8::internal::compiler::Inlinee::InlineAtCall(), v8::internal::compiler::RepresentationChanger::InsertChangeFloat32ToFloat64(), NewNode(), v8::internal::compiler::RepresentationSelector::Run(), v8::internal::compiler::JSContextSpecializer::SpecializeToContext(), v8::internal::compiler::JSInliner::TryInlineCall(), v8::internal::compiler::Inlinee::UnifyReturn(), and zone().

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HeapConstant() [1/2]

Node * v8::internal::compiler::JSGraph::HeapConstant

(

Handle< Object >

value

)

Definition at line 102 of file js-graph.cc.

                                                {
  // TODO(titzer): We could also match against the addresses of immortable
  // immovables here, even without access to the heap, thus always
  // canonicalizing references to them.
  // return HeapConstant(Unique<Object>::CreateUninitialized(value));
  // TODO(turbofan): This is a work-around to make Unique::HashCode() work for
  // value numbering. We need some sane way to compute a unique hash code for
  // arbitrary handles here.
  Unique<Object> unique(reinterpret_cast<Address>(*value.location()), value);
  return HeapConstant(unique);
}

References HeapConstant().

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HeapConstant() [2/2]

Node * v8::internal::compiler::JSGraph::HeapConstant

(

Unique< Object >

value

)

Definition at line 96 of file js-graph.cc.

                                                {
  // TODO(turbofan): canonicalize heap constants using Unique<T>
  return NewNode(common()->HeapConstant(value));
}

References common(), and NewNode().

Referenced by v8::internal::compiler::JSGenericLowering::CodeConstant(), Constant(), v8::internal::compiler::JSGenericLowering::FunctionConstant(), HeapConstant(), and ImmovableHeapConstant().

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ImmovableHeapConstant()

Node * v8::internal::compiler::JSGraph::ImmovableHeapConstant ( Handle< Object >  value )

private

Definition at line 13 of file js-graph.cc.

                                                          {
  Unique<Object> unique = Unique<Object>::CreateImmovable(object);
  return NewNode(common()->HeapConstant(unique));
}

References common(), v8::internal::Unique< T >::CreateImmovable(), HeapConstant(), and NewNode().

Referenced by CEntryStubConstant(), FalseConstant(), NullConstant(), TheHoleConstant(), TrueConstant(), and UndefinedConstant().

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Int32Constant()

Node * v8::internal::compiler::JSGraph::Int32Constant

(

int32_t

value

)

Definition at line 150 of file js-graph.cc.

                                          {
  Node** loc = cache_.FindInt32Constant(value);
  if (*loc == NULL) {
    *loc = NewNode(common()->Int32Constant(value));
  }
  return *loc;
}

References cache_, common(), NewNode(), and NULL.

Referenced by v8::internal::compiler::SimplifiedLowering::DoLoadField(), v8::internal::compiler::SimplifiedLowering::DoStoreField(), v8::internal::compiler::RepresentationChanger::GetBitRepresentationFor(), v8::internal::compiler::JSGenericLowering::Int32Constant(), v8::internal::compiler::RepresentationChanger::MakeInt32Constant(), v8::internal::compiler::SimplifiedLowering::OffsetMinusTagConstant(), v8::internal::compiler::SimplifiedLowering::SmiTag(), Uint32Constant(), v8::internal::compiler::SimplifiedLowering::Untag(), and v8::internal::compiler::RepresentationSelector::VisitNode().

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isolate()

Isolate* v8::internal::compiler::JSGraph::isolate ( )

inline

Definition at line 91 of file js-graph.h.

{ return zone()->isolate(); }

References v8::internal::Zone::isolate(), and zone().

Referenced by CEntryStubConstant(), and factory().

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javascript()

JSOperatorBuilder* v8::internal::compiler::JSGraph::javascript ( )

inline

Definition at line 86 of file js-graph.h.

{ return javascript_; }

References javascript_.

Referenced by v8::internal::compiler::AstGraphBuilder::javascript(), v8::internal::compiler::JSContextSpecializer::ReduceJSLoadContext(), v8::internal::compiler::JSContextSpecializer::ReduceJSStoreContext(), and v8::internal::compiler::JSInliner::TryInlineCall().

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machine()

MachineOperatorBuilder* v8::internal::compiler::JSGraph::machine ( )

inline

Definition at line 88 of file js-graph.h.

{ return machine_; }

References machine_.

Referenced by v8::internal::compiler::RepresentationChanger::machine(), v8::internal::compiler::SimplifiedLowering::machine(), v8::internal::compiler::JSGenericLowering::machine(), and v8::internal::compiler::JSInliner::TryInlineCall().

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NaNConstant()

Node * v8::internal::compiler::JSGraph::NaNConstant

(

)

Definition at line 88 of file js-graph.cc.

                           {
  if (!nan_constant_.is_set()) {
    nan_constant_.set(NumberConstant(base::OS::nan_value()));
  }
  return nan_constant_.get();
}

References v8::internal::SetOncePointer< T >::get(), v8::internal::SetOncePointer< T >::is_set(), nan_constant_, v8::base::OS::nan_value(), NumberConstant(), and v8::internal::SetOncePointer< T >::set().

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NewNode()

Node * v8::internal::compiler::JSGraph::NewNode ( const Operator *  op )

private

Definition at line 19 of file js-graph.cc.

                                         {
  Node* node = graph()->NewNode(op);
  typer_->Init(node);
  return node;
}

References graph(), v8::internal::compiler::Typer::Init(), v8::internal::compiler::Graph::NewNode(), and typer_.

Referenced by ExternalConstant(), Float32Constant(), Float64Constant(), HeapConstant(), ImmovableHeapConstant(), Int32Constant(), and NumberConstant().

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NullConstant()

Node * v8::internal::compiler::JSGraph::NullConstant

(

)

Definition at line 68 of file js-graph.cc.

                            {
  if (!null_constant_.is_set()) {
    null_constant_.set(ImmovableHeapConstant(factory()->null_value()));
  }
  return null_constant_.get();
}

References factory(), v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), null_constant_, and v8::internal::SetOncePointer< T >::set().

Referenced by Constant().

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NumberConstant()

Node * v8::internal::compiler::JSGraph::NumberConstant ( double  value )

private

Definition at line 159 of file js-graph.cc.

                                          {
  Node** loc = cache_.FindNumberConstant(value);
  if (*loc == NULL) {
    *loc = NewNode(common()->NumberConstant(value));
  }
  return *loc;
}

References cache_, common(), NewNode(), and NULL.

Referenced by Constant(), NaNConstant(), OneConstant(), and ZeroConstant().

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OneConstant()

Node * v8::internal::compiler::JSGraph::OneConstant

(

)

Definition at line 82 of file js-graph.cc.

                           {
  if (!one_constant_.is_set()) one_constant_.set(NumberConstant(1.0));
  return one_constant_.get();
}

References v8::internal::SetOncePointer< T >::get(), v8::internal::SetOncePointer< T >::is_set(), NumberConstant(), one_constant_, and v8::internal::SetOncePointer< T >::set().

Referenced by Constant(), and v8::internal::compiler::RepresentationChanger::GetBitRepresentationFor().

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SmiConstant()

Node* v8::internal::compiler::JSGraph::SmiConstant ( int32_t  immediate )

inline

Definition at line 81 of file js-graph.h.

                                       {
    DCHECK(Smi::IsValid(immediate));
    return Constant(immediate);
  }

References Constant(), DCHECK, and v8::internal::Smi::IsValid().

Referenced by v8::internal::compiler::JSGenericLowering::SmiConstant().

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TheHoleConstant()

Node * v8::internal::compiler::JSGraph::TheHoleConstant

(

)

Definition at line 44 of file js-graph.cc.

                               {
  if (!the_hole_constant_.is_set()) {
    the_hole_constant_.set(ImmovableHeapConstant(factory()->the_hole_value()));
  }
  return the_hole_constant_.get();
}

References factory(), v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), v8::internal::SetOncePointer< T >::set(), and the_hole_constant_.

Referenced by v8::internal::compiler::AstGraphBuilder::BuildHoleCheckSilent(), v8::internal::compiler::AstGraphBuilder::BuildHoleCheckThrow(), v8::internal::compiler::AstGraphBuilder::BuildVariableAssignment(), v8::internal::compiler::AstGraphBuilder::BuildVariableLoad(), and Constant().

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TrueConstant()

Node * v8::internal::compiler::JSGraph::TrueConstant

(

)

Definition at line 52 of file js-graph.cc.

                            {
  if (!true_constant_.is_set()) {
    true_constant_.set(ImmovableHeapConstant(factory()->true_value()));
  }
  return true_constant_.get();
}

References factory(), v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), v8::internal::SetOncePointer< T >::set(), and true_constant_.

Referenced by v8::internal::compiler::AstGraphBuilder::BuildVariableDelete(), Constant(), v8::internal::compiler::RepresentationChanger::GetTaggedRepresentationFor(), v8::internal::compiler::AstGraphBuilder::VisitDelete(), and v8::internal::compiler::RepresentationSelector::VisitNode().

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Uint32Constant()

Node* v8::internal::compiler::JSGraph::Uint32Constant ( uint32_t  value )

inline

Definition at line 68 of file js-graph.h.

                                       {
    return Int32Constant(bit_cast<int32_t>(value));
  }

References Int32Constant().

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UndefinedConstant()

Node * v8::internal::compiler::JSGraph::UndefinedConstant

(

)

Definition at line 35 of file js-graph.cc.

                                 {
  if (!undefined_constant_.is_set()) {
    undefined_constant_.set(
        ImmovableHeapConstant(factory()->undefined_value()));
  }
  return undefined_constant_.get();
}

References factory(), v8::internal::SetOncePointer< T >::get(), ImmovableHeapConstant(), v8::internal::SetOncePointer< T >::is_set(), v8::internal::SetOncePointer< T >::set(), and undefined_constant_.

Referenced by v8::internal::compiler::AstGraphBuilder::BuildVariableLoad(), Constant(), v8::internal::compiler::JSInliner::CreateArgumentsAdaptorFrameState(), v8::internal::compiler::AstGraphBuilder::CreateGraph(), v8::internal::compiler::AstGraphBuilder::Environment::Environment(), v8::internal::compiler::Inlinee::InlineAtCall(), and v8::internal::compiler::AstGraphBuilder::VisitVoid().

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ZeroConstant()

Node * v8::internal::compiler::JSGraph::ZeroConstant

(

)

Definition at line 76 of file js-graph.cc.

                            {
  if (!zero_constant_.is_set()) zero_constant_.set(NumberConstant(0.0));
  return zero_constant_.get();
}

References v8::internal::SetOncePointer< T >::get(), v8::internal::SetOncePointer< T >::is_set(), NumberConstant(), v8::internal::SetOncePointer< T >::set(), and zero_constant_.

Referenced by Constant().

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zone()

Zone* v8::internal::compiler::JSGraph::zone ( )

inline

Definition at line 90 of file js-graph.h.

{ return graph()->zone(); }

References graph(), and v8::internal::compiler::GenericGraphBase::zone().

Referenced by v8::internal::compiler::Inlinee::InlineAtCall(), isolate(), v8::internal::compiler::Inlinee::UnifyReturn(), v8::internal::compiler::RepresentationSelector::VisitNode(), and v8::internal::compiler::SimplifiedLowering::zone().

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Member Data Documentation

c_entry_stub_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::c_entry_stub_constant_

private

Definition at line 100 of file js-graph.h.

Referenced by CEntryStubConstant().

cache_

CommonNodeCache v8::internal::compiler::JSGraph::cache_

private

Definition at line 110 of file js-graph.h.

Referenced by ExternalConstant(), Float64Constant(), Int32Constant(), and NumberConstant().

common_

CommonOperatorBuilder* v8::internal::compiler::JSGraph::common_

private

Definition at line 95 of file js-graph.h.

Referenced by common().

false_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::false_constant_

private

Definition at line 104 of file js-graph.h.

Referenced by FalseConstant().

graph_

Graph* v8::internal::compiler::JSGraph::graph_

private

Definition at line 94 of file js-graph.h.

Referenced by graph().

javascript_

JSOperatorBuilder* v8::internal::compiler::JSGraph::javascript_

private

Definition at line 96 of file js-graph.h.

Referenced by javascript().

machine_

MachineOperatorBuilder* v8::internal::compiler::JSGraph::machine_

private

Definition at line 98 of file js-graph.h.

Referenced by machine().

nan_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::nan_constant_

private

Definition at line 108 of file js-graph.h.

Referenced by NaNConstant().

null_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::null_constant_

private

Definition at line 105 of file js-graph.h.

Referenced by NullConstant().

one_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::one_constant_

private

Definition at line 107 of file js-graph.h.

Referenced by OneConstant().

the_hole_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::the_hole_constant_

private

Definition at line 102 of file js-graph.h.

Referenced by TheHoleConstant().

true_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::true_constant_

private

Definition at line 103 of file js-graph.h.

Referenced by TrueConstant().

typer_

Typer* v8::internal::compiler::JSGraph::typer_

private

Definition at line 97 of file js-graph.h.

Referenced by NewNode().

undefined_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::undefined_constant_

private

Definition at line 101 of file js-graph.h.

Referenced by UndefinedConstant().

zero_constant_

SetOncePointer<Node> v8::internal::compiler::JSGraph::zero_constant_

private

Definition at line 106 of file js-graph.h.

Referenced by ZeroConstant().

---

The documentation for this class was generated from the following files:

• /mnt/V8SourceCode/src/compiler/js-graph.h
• /mnt/V8SourceCode/src/compiler/js-graph.cc