v8::internal::HydrogenCodeStub Class Reference

#include <code-stubs.h>

Inheritance diagram for v8::internal::HydrogenCodeStub:

Collaboration diagram for v8::internal::HydrogenCodeStub:

Classes
class	IsMissBits
class	SubMinorKeyBits

Public Types
enum	InitializationState { UNINITIALIZED , INITIALIZED }

Public Member Functions
virtual Code::Kind	GetCodeKind () const
virtual Handle< Code >	GenerateCode ()=0
bool	IsUninitialized () const
Handle< Code >	GenerateLightweightMissCode (ExternalReference miss)
template<class StateType >
void	TraceTransition (StateType from, StateType to)

Static Public Member Functions
template<class SubClass >
static Handle< Code >	GetUninitialized (Isolate *isolate)

Protected Member Functions
	HydrogenCodeStub (Isolate *isolate, InitializationState state=INITIALIZED)
void	set_sub_minor_key (uint32_t key)
uint32_t	sub_minor_key () const

Static Protected Attributes
static const int	kSubMinorKeyBits = kStubMinorKeyBits - 1

Private Member Functions
void	GenerateLightweightMiss (MacroAssembler *masm, ExternalReference miss)
	DEFINE_CODE_STUB_BASE (HydrogenCodeStub, CodeStub)

Detailed Description

Definition at line 431 of file code-stubs.h.

Member Enumeration Documentation

InitializationState

enum v8::internal::HydrogenCodeStub::InitializationState

Enumerator
UNINITIALIZED
INITIALIZED

Definition at line 433 of file code-stubs.h.

                           {
    UNINITIALIZED,
    INITIALIZED
  };

Constructor & Destructor Documentation

HydrogenCodeStub()

v8::internal::HydrogenCodeStub::HydrogenCodeStub ( Isolate *  isolate, InitializationState  state = INITIALIZED  )

inlineexplicitprotected

Definition at line 457 of file code-stubs.h.

      : CodeStub(isolate) {
    minor_key_ = IsMissBits::encode(state == UNINITIALIZED);
  }

References v8::internal::BitFieldBase< T, shift, size, U >::encode(), and UNINITIALIZED.

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Member Function Documentation

DEFINE_CODE_STUB_BASE()

v8::internal::HydrogenCodeStub::DEFINE_CODE_STUB_BASE ( HydrogenCodeStub  , CodeStub    )

private

GenerateCode()

virtual Handle<Code> v8::internal::HydrogenCodeStub::GenerateCode ( )

pure virtual

GenerateLightweightMiss()

void v8::internal::HydrogenCodeStub::GenerateLightweightMiss ( MacroAssembler *  masm, ExternalReference  miss  )

private

Referenced by GenerateLightweightMissCode().

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GenerateLightweightMissCode()

Handle< Code > v8::internal::HydrogenCodeStub::GenerateLightweightMissCode

(

ExternalReference

miss

)

Definition at line 222 of file code-stubs-hydrogen.cc.

                            {
  Factory* factory = isolate()->factory();
 
  // Generate the new code.
  MacroAssembler masm(isolate(), NULL, 256);
 
  {
    // Update the static counter each time a new code stub is generated.
    isolate()->counters()->code_stubs()->Increment();
 
    // Generate the code for the stub.
    masm.set_generating_stub(true);
    NoCurrentFrameScope scope(&masm);
    GenerateLightweightMiss(&masm, miss);
  }
 
  // Create the code object.
  CodeDesc desc;
  masm.GetCode(&desc);
 
  // Copy the generated code into a heap object.
  Code::Flags flags = Code::ComputeFlags(
      GetCodeKind(),
      GetICState(),
      GetExtraICState(),
      GetStubType());
  Handle<Code> new_object = factory->NewCode(
      desc, flags, masm.CodeObject(), NeedsImmovableCode());
  return new_object;
}

References v8::internal::MacroAssembler::CodeObject(), v8::internal::Code::ComputeFlags(), v8::internal::anonymous_namespace{flags.cc}::flags, GenerateLightweightMiss(), v8::internal::Assembler::GetCode(), GetCodeKind(), NULL, and v8::internal::MacroAssembler::set_generating_stub().

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GetCodeKind()

virtual Code::Kind v8::internal::HydrogenCodeStub::GetCodeKind ( ) const

inlinevirtual

Reimplemented in v8::internal::VectorKeyedLoadStub, v8::internal::VectorLoadStub, v8::internal::MegamorphicLoadStub, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::BinaryOpICStub, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::ToBooleanStub, v8::internal::KeyedLoadGenericStub, v8::internal::CompareNilICStub, and v8::internal::HandlerStub.

Definition at line 438 of file code-stubs.h.

{ return Code::STUB; }

References v8::internal::STUB.

Referenced by GenerateLightweightMissCode().

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GetUninitialized()

template<class SubClass >

static Handle<Code> v8::internal::HydrogenCodeStub::GetUninitialized ( Isolate *  isolate )

inlinestatic

Definition at line 441 of file code-stubs.h.

                                                         {
    SubClass::GenerateAheadOfTime(isolate);
    return SubClass().GetCode(isolate);
  }

IsUninitialized()

bool v8::internal::HydrogenCodeStub::IsUninitialized ( ) const

inline

Definition at line 449 of file code-stubs.h.

{ return IsMissBits::decode(minor_key_); }

References v8::internal::BitFieldBase< T, shift, size, U >::decode().

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set_sub_minor_key()

void v8::internal::HydrogenCodeStub::set_sub_minor_key ( uint32_t  key )

inlineprotected

Definition at line 463 of file code-stubs.h.

                                       {
    minor_key_ = SubMinorKeyBits::update(minor_key_, key);
  }

References v8::internal::BitFieldBase< T, shift, size, U >::update().

Referenced by v8::internal::ArrayConstructorStubBase::ArrayConstructorStubBase(), v8::internal::BinaryOpICStub::BinaryOpICStub(), v8::internal::CompareNilICStub::ClearState(), v8::internal::CompareNilICStub::CompareNilICStub(), v8::internal::ElementsTransitionAndStoreStub::ElementsTransitionAndStoreStub(), v8::internal::FastCloneShallowArrayStub::FastCloneShallowArrayStub(), v8::internal::FastCloneShallowObjectStub::FastCloneShallowObjectStub(), v8::internal::FastNewClosureStub::FastNewClosureStub(), v8::internal::InternalArrayConstructorStubBase::InternalArrayConstructorStubBase(), v8::internal::LoadConstantStub::LoadConstantStub(), v8::internal::LoadFastElementStub::LoadFastElementStub(), v8::internal::LoadFieldStub::LoadFieldStub(), v8::internal::MegamorphicLoadStub::MegamorphicLoadStub(), v8::internal::StoreGlobalStub::set_is_constant(), v8::internal::StoreGlobalStub::set_representation(), v8::internal::StoreFastElementStub::StoreFastElementStub(), v8::internal::StoreFieldStub::StoreFieldStub(), v8::internal::StoreGlobalStub::StoreGlobalStub(), v8::internal::ToBooleanStub::ToBooleanStub(), v8::internal::TransitionElementsKindStub::TransitionElementsKindStub(), v8::internal::CompareNilICStub::UpdateStatus(), v8::internal::ToBooleanStub::UpdateStatus(), and v8::internal::VectorLoadStub::VectorLoadStub().

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sub_minor_key()

uint32_t v8::internal::HydrogenCodeStub::sub_minor_key ( ) const

inlineprotected

Definition at line 467 of file code-stubs.h.

{ return SubMinorKeyBits::decode(minor_key_); }

References v8::internal::BitFieldBase< T, shift, size, U >::decode().

Referenced by v8::internal::FastCloneShallowArrayStub::allocation_site_mode(), v8::internal::StoreGlobalStub::check_global(), v8::internal::CompareNilICStub::ClearState(), v8::internal::LoadConstantStub::constant_index(), v8::internal::LoadFastElementStub::elements_kind(), v8::internal::StoreFastElementStub::elements_kind(), v8::internal::ArrayConstructorStubBase::elements_kind(), v8::internal::InternalArrayConstructorStubBase::elements_kind(), v8::internal::TransitionElementsKindStub::from_kind(), v8::internal::ElementsTransitionAndStoreStub::from_kind(), v8::internal::CompareNilICStub::GetExtraICState(), v8::internal::BinaryOpICStub::GetExtraICState(), v8::internal::MegamorphicLoadStub::GetExtraICState(), v8::internal::VectorLoadStub::GetExtraICState(), v8::internal::LoadFieldStub::index(), v8::internal::StoreFieldStub::index(), v8::internal::StoreGlobalStub::is_constant(), v8::internal::LoadFastElementStub::is_js_array(), v8::internal::StoreFastElementStub::is_js_array(), v8::internal::TransitionElementsKindStub::is_js_array(), v8::internal::ElementsTransitionAndStoreStub::is_jsarray(), v8::internal::FastNewClosureStub::kind(), v8::internal::FastCloneShallowObjectStub::length(), v8::internal::ToBooleanStub::mode(), v8::internal::CompareNilICStub::nil_value(), v8::internal::ArrayConstructorStubBase::override_mode(), v8::internal::StoreFieldStub::representation(), v8::internal::StoreGlobalStub::representation(), v8::internal::StoreGlobalStub::set_is_constant(), v8::internal::StoreGlobalStub::set_representation(), v8::internal::CompareNilICStub::state(), v8::internal::StoreFastElementStub::store_mode(), v8::internal::ElementsTransitionAndStoreStub::store_mode(), v8::internal::FastNewClosureStub::strict_mode(), v8::internal::TransitionElementsKindStub::to_kind(), v8::internal::ElementsTransitionAndStoreStub::to_kind(), v8::internal::ToBooleanStub::types(), v8::internal::CompareNilICStub::UpdateStatus(), and v8::internal::ToBooleanStub::UpdateStatus().

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TraceTransition()

template<class StateType >

void v8::internal::HydrogenCodeStub::TraceTransition	(	StateType	from,
		StateType	to
	)

Definition at line 458 of file code-stubs.cc.

                                                                   {
  // Note: Although a no-op transition is semantically OK, it is hinting at a
  // bug somewhere in our state transition machinery.
  DCHECK(from != to);
  if (!FLAG_trace_ic) return;
  OFStream os(stdout);
  os << "[";
  PrintBaseName(os);
  os << ": " << from << "=>" << to << "]" << endl;
}

References DCHECK, v8::internal::endl(), and to().

Referenced by v8::internal::CompareNilICStub::UpdateStatus(), and v8::internal::ToBooleanStub::UpdateStatus().

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Member Data Documentation

kSubMinorKeyBits

const int v8::internal::HydrogenCodeStub::kSubMinorKeyBits = kStubMinorKeyBits - 1

staticprotected

Definition at line 469 of file code-stubs.h.

---

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

• /mnt/V8SourceCode/src/code-stubs.h
• /mnt/V8SourceCode/src/code-stubs-hydrogen.cc
• /mnt/V8SourceCode/src/code-stubs.cc