#include <il.h>

Inheritance diagram for dart::LoadStaticFieldInstr:

Public Member Functions
	LoadStaticFieldInstr (const Field &field, const InstructionSource &source, bool calls_initializer=false, intptr_t deopt_id=DeoptId::kNone)

virtual CompileType	ComputeType () const

const Field &	field () const

virtual bool	AllowsCSE () const

virtual bool	AttributesEqual (const Instruction &other) const

Public Member Functions inherited from dart::TemplateLoadField< 0 >
	TemplateLoadField (const InstructionSource &source, bool calls_initializer=false, intptr_t deopt_id=DeoptId::kNone, const Field *field=nullptr)

virtual TokenPosition	token_pos () const

bool	calls_initializer () const

void	set_calls_initializer (bool value)

bool	throw_exception_on_initialization () const

virtual bool	UseSharedSlowPathStub (bool is_optimizing) const

virtual intptr_t	DeoptimizationTarget () const

virtual bool	ComputeCanDeoptimize () const

virtual bool	ComputeCanDeoptimizeAfterCall () const

virtual intptr_t	NumberOfInputsConsumedBeforeCall () const

virtual bool	HasUnknownSideEffects () const

virtual bool	CanCallDart () const

virtual bool	CanTriggerGC () const

virtual bool	MayThrow () const

Public Member Functions inherited from dart::TemplateDefinition< N, Throws >
	TemplateDefinition (intptr_t deopt_id=DeoptId::kNone)

	TemplateDefinition (const InstructionSource &source, intptr_t deopt_id=DeoptId::kNone)

virtual intptr_t	InputCount () const

virtual Value *	InputAt (intptr_t i) const

virtual bool	MayThrow () const

Public Member Functions inherited from dart::Instruction
	Instruction (const InstructionSource &source, intptr_t deopt_id=DeoptId::kNone)

	Instruction (intptr_t deopt_id=DeoptId::kNone)

virtual	~Instruction ()

virtual Tag	tag () const =0

virtual intptr_t	statistics_tag () const

intptr_t	deopt_id () const

virtual TokenPosition	token_pos () const

InstructionSource	source () const

virtual intptr_t	InputCount () const =0

virtual Value *	InputAt (intptr_t i) const =0

void	SetInputAt (intptr_t i, Value *value)

InputsIterable	inputs ()

void	UnuseAllInputs ()

virtual intptr_t	ArgumentCount () const

Value *	ArgumentValueAt (intptr_t index) const

Definition *	ArgumentAt (intptr_t index) const

virtual void	SetMoveArguments (MoveArgumentsArray *move_arguments)

virtual MoveArgumentsArray *	GetMoveArguments () const

virtual void	ReplaceInputsWithMoveArguments (MoveArgumentsArray *move_arguments)

bool	HasMoveArguments () const

void	RepairArgumentUsesInEnvironment () const

virtual bool	ComputeCanDeoptimize () const =0

virtual bool	ComputeCanDeoptimizeAfterCall () const

bool	CanDeoptimize () const

virtual void	Accept (InstructionVisitor *visitor)=0

Instruction *	previous () const

void	set_previous (Instruction *instr)

Instruction *	next () const

void	set_next (Instruction *instr)

void	LinkTo (Instruction *next)

Instruction *	RemoveFromGraph (bool return_previous=true)

virtual intptr_t	SuccessorCount () const

virtual BlockEntryInstr *	SuccessorAt (intptr_t index) const

SuccessorsIterable	successors () const

void	Goto (JoinEntryInstr *entry)

virtual const char *	DebugName () const =0

void	CheckField (const Field &field) const

const char *	ToCString () const

	DECLARE_INSTRUCTION_TYPE_CHECK (BlockEntryWithInitialDefs, BlockEntryWithInitialDefs) template< typename T > T *Cast()

template<typename T >
const T *	Cast () const

LocationSummary *	locs ()

bool	HasLocs () const

virtual LocationSummary *	MakeLocationSummary (Zone *zone, bool is_optimizing) const =0

void	InitializeLocationSummary (Zone *zone, bool optimizing)

virtual void	EmitNativeCode (FlowGraphCompiler *compiler)

Environment *	env () const

void	SetEnvironment (Environment *deopt_env)

void	RemoveEnvironment ()

void	ReplaceInEnvironment (Definition current, Definition replacement)

virtual intptr_t	NumberOfInputsConsumedBeforeCall () const

intptr_t	GetPassSpecificId (CompilerPass::Id pass) const

void	SetPassSpecificId (CompilerPass::Id pass, intptr_t id)

bool	HasPassSpecificId (CompilerPass::Id pass) const

bool	HasUnmatchedInputRepresentations () const

virtual Representation	RequiredInputRepresentation (intptr_t idx) const

SpeculativeMode	SpeculativeModeOfInputs () const

virtual SpeculativeMode	SpeculativeModeOfInput (intptr_t index) const

virtual Representation	representation () const

bool	WasEliminated () const

virtual intptr_t	DeoptimizationTarget () const

virtual Instruction *	Canonicalize (FlowGraph *flow_graph)

void	InsertBefore (Instruction *next)

void	InsertAfter (Instruction *prev)

Instruction *	AppendInstruction (Instruction *tail)

virtual bool	AllowsCSE () const

virtual bool	HasUnknownSideEffects () const =0

virtual bool	CanCallDart () const

virtual bool	CanTriggerGC () const

virtual BlockEntryInstr *	GetBlock ()

virtual intptr_t	inlining_id () const

virtual void	set_inlining_id (intptr_t value)

virtual bool	has_inlining_id () const

virtual uword	Hash () const

bool	Equals (const Instruction &other) const

virtual bool	AttributesEqual (const Instruction &other) const

void	InheritDeoptTarget (Zone zone, Instruction other)

bool	NeedsEnvironment () const

virtual bool	CanBecomeDeoptimizationTarget () const

void	InheritDeoptTargetAfter (FlowGraph flow_graph, Definition call, Definition *result)

virtual bool	MayThrow () const =0

virtual bool	MayHaveVisibleEffect () const

virtual bool	CanEliminate (const BlockEntryInstr *block) const

bool	CanEliminate ()

bool	IsDominatedBy (Instruction *dom)

void	ClearEnv ()

void	Unsupported (FlowGraphCompiler *compiler)

virtual bool	UseSharedSlowPathStub (bool is_optimizing) const

Location::Kind	RegisterKindForResult () const

Public Member Functions inherited from dart::ZoneAllocated
	ZoneAllocated ()

void *	operator new (size_t size)

void *	operator new (size_t size, Zone *zone)

void	operator delete (void *pointer)

Additional Inherited Members
Public Types inherited from dart::TemplateDefinition< N, Throws >
using	BaseClass = typename NoCSE< Definition, PureDefinition >::Base

Public Types inherited from dart::Instruction
enum	Tag { FOR_EACH_INSTRUCTION =(DECLARE_TAG) kNumInstructions }

enum	SpeculativeMode { kGuardInputs , kNotSpeculative }

using	InputsIterable = InstructionIndexedPropertyIterable< InputsTrait >

using	SuccessorsIterable = InstructionIndexedPropertyIterable< SuccessorsTrait >

Static Public Member Functions inherited from dart::Instruction
static const ICData *	GetICData (const ZoneGrowableArray< const ICData * > &ic_data_array, intptr_t deopt_id, bool is_static_call)

static LocationSummary *	MakeCallSummary (Zone zone, const Instruction instr, LocationSummary *locs=nullptr)

static bool	SlowPathSharingSupported (bool is_optimizing)

Static Public Attributes inherited from dart::Instruction
static const intptr_t	kInstructionAttrs [kNumInstructions]

Protected Member Functions inherited from dart::Instruction
intptr_t	GetDeoptId () const

virtual void	CopyDeoptIdFrom (const Instruction &instr)

void	WriteExtraWithoutInputs (FlowGraphSerializer *s)

void	ReadExtraWithoutInputs (FlowGraphDeserializer *d)

Protected Attributes inherited from dart::TemplateDefinition< N, Throws >
EmbeddedArray< Value *, N >	inputs_

Detailed Description

Definition at line 6670 of file il.h.

Constructor & Destructor Documentation

◆ LoadStaticFieldInstr()

dart::LoadStaticFieldInstr::LoadStaticFieldInstr	(	const Field &	field,
		const InstructionSource &	source,
		bool	calls_initializer = `false`,
		intptr_t	deopt_id = `DeoptId::kNone`
	)

inline

Definition at line 6672 of file il.h.

6676 : TemplateLoadField<0>(source, calls_initializer, deopt_id, &field),

6677 field_(field) {}

dart::Instruction::source

InstructionSource source() const

Definition: il.h:1008

dart::Instruction::deopt_id

intptr_t deopt_id() const

Definition: il.h:993

dart::LoadStaticFieldInstr::field

const Field & field() const

Definition: il.h:6683

dart::TemplateLoadField< 0 >::calls_initializer

bool calls_initializer() const

Definition: il.h:6623

Member Function Documentation

◆ AllowsCSE()

virtual bool dart::LoadStaticFieldInstr::AllowsCSE ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 6685 of file il.h.

                                 {
    // If two loads of a static-final-late field call the initializer and one
    // dominates another, we can remove the dominated load with the result of
    // the dominating load.
    //
    // Though if the field is final-late there can be stores into it via
    // load/compare-with-sentinel/store. Those loads have
    // `!field().has_initializer()` and we won't allow CSE for them.
    return field().is_final() &&
           (!field().is_late() || field().has_initializer());
  }

◆ AttributesEqual()

bool dart::LoadStaticFieldInstr::AttributesEqual ( const Instruction & other ) const

virtual

Reimplemented from dart::Instruction.

Definition at line 1127 of file il.cc.

                                                                         {
  ASSERT(AllowsCSE());
  return field().ptr() == other.AsLoadStaticField()->field().ptr();
}

◆ ComputeType()

CompileType dart::LoadStaticFieldInstr::ComputeType ( ) const

virtual

Definition at line 1633 of file type_propagator.cc.

                                                    {
  const Field& field = this->field();
  ASSERT(field.is_static());
  bool is_nullable = true;
  intptr_t cid = kIllegalCid;  // Abstract type is known, calculate cid lazily.
 
  AbstractType* abstract_type = &AbstractType::ZoneHandle(field.type());
  TraceStrongModeType(this, *abstract_type);
  if (abstract_type->IsStrictlyNonNullable()) {
    is_nullable = false;
  }
 
  if ((field.guarded_cid() != kIllegalCid) &&
      (field.guarded_cid() != kDynamicCid)) {
    cid = field.guarded_cid();
    if (!field.is_nullable()) {
      is_nullable = false;
    }
    abstract_type = nullptr;  // Cid is known, calculate abstract type lazily.
  }
 
  if (field.needs_load_guard()) {
    // Should be kept in sync with Slot::Get.
    DEBUG_ASSERT(IsolateGroup::Current()->HasAttemptedReload());
    return CompileType::Dynamic();
  }
 
  const bool can_be_sentinel = !calls_initializer() && field.is_late() &&
                               field.is_final() && !field.has_initializer();
  return CompileType(is_nullable, can_be_sentinel, cid, abstract_type);
}

◆ field()

const Field & dart::LoadStaticFieldInstr::field ( ) const

inline

Definition at line 6683 of file il.h.

6683{ return field_; }

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

third_party/dart-lang/sdk/runtime/vm/compiler/backend/il.h
third_party/dart-lang/sdk/runtime/vm/compiler/backend/il.cc
third_party/dart-lang/sdk/runtime/vm/compiler/backend/type_propagator.cc

Public Member Functions

Additional Inherited Members