#include <il.h>

Inheritance diagram for dart::UnboxInstr:

Public Member Functions
Value *	value () const

virtual bool	ComputeCanDeoptimize () const

virtual SpeculativeMode	SpeculativeModeOfInput (intptr_t index) const

virtual Representation	representation () const

virtual bool	AttributesEqual (const Instruction &other) const

Definition *	Canonicalize (FlowGraph *flow_graph)

virtual intptr_t	DeoptimizationTarget () const

virtual TokenPosition	token_pos () const

	DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS (UnboxInstr, TemplateDefinition, FIELD_LIST) protected

void	set_speculative_mode (SpeculativeMode value)

Public Member Functions inherited from dart::TemplateDefinition< 1, NoThrow, Pure >
	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::PureDefinition
	PureDefinition (intptr_t deopt_id)

	PureDefinition (const InstructionSource &source, intptr_t deopt_id)

virtual bool	AllowsCSE () const

virtual bool	HasUnknownSideEffects () const

Public Member Functions inherited from dart::Definition
	Definition (intptr_t deopt_id=DeoptId::kNone)

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

virtual intptr_t	CallCount () const

intptr_t	temp_index () const

void	set_temp_index (intptr_t index)

void	ClearTempIndex ()

bool	HasTemp () const

intptr_t	ssa_temp_index () const

void	set_ssa_temp_index (intptr_t index)

bool	HasSSATemp () const

void	ClearSSATempIndex ()

intptr_t	vreg (intptr_t index) const

intptr_t	location_count () const

bool	HasPairRepresentation () const

CompileType *	Type ()

bool	HasType () const

bool	IsInt64Definition ()

bool	IsInt32Definition ()

virtual CompileType	ComputeType () const

virtual bool	RecomputeType ()

PRINT_OPERANDS_TO_SUPPORT PRINT_TO_SUPPORT bool	UpdateType (CompileType new_type)

bool	HasUses () const

bool	HasOnlyUse (Value *use) const

bool	HasOnlyInputUse (Value *use) const

Value *	input_use_list () const

void	set_input_use_list (Value *head)

Value *	env_use_list () const

void	set_env_use_list (Value *head)

ValueListIterable	input_uses () const

void	AddInputUse (Value *value)

void	AddEnvUse (Value *value)

virtual bool	MayCreateUnsafeUntaggedPointer () const

virtual bool	CanReplaceWithConstant () const

virtual bool	CanEliminate (const BlockEntryInstr *block) const

void	ReplaceUsesWith (Definition *other)

void	ReplaceWithResult (Instruction replacement, Definition replacement_for_uses, ForwardInstructionIterator *iterator)

void	ReplaceWith (Definition other, ForwardInstructionIterator iterator)

Object &	constant_value ()

virtual void	InferRange (RangeAnalysis analysis, Range range)

Range *	range () const

void	set_range (const Range &)

virtual Definition *	Canonicalize (FlowGraph *flow_graph)

Definition *	Replacement ()

void	SetReplacement (Definition *other)

virtual AliasIdentity	Identity () const

virtual void	SetIdentity (AliasIdentity identity)

Definition *	OriginalDefinition ()

virtual Value *	RedefinedValue () const

Definition *	OriginalDefinitionIgnoreBoxingAndConstraints ()

virtual Definition *	AsDefinition ()

virtual const Definition *	AsDefinition () 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)

Static Public Member Functions
static UnboxInstr *	Create (Representation to, Value *value, intptr_t deopt_id, SpeculativeMode speculative_mode=kGuardInputs)

Static Public Member Functions inherited from dart::Definition
static bool	IsArrayLength (Definition *def)

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)

Additional Inherited Members
Public Types inherited from dart::TemplateDefinition< 1, NoThrow, Pure >
using	BaseClass = typename Pure< 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 Attributes inherited from dart::Definition
static constexpr intptr_t	kReplacementMarker = -2

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

Protected Member Functions inherited from dart::Definition
void	set_type (CompileType *type)

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< 1, NoThrow, Pure >
EmbeddedArray< Value *, N >	inputs_

Protected Attributes inherited from dart::Definition
Range *	range_ = nullptr

Detailed Description

Definition at line 8671 of file il.h.

Member Function Documentation

◆ AttributesEqual()

virtual bool dart::UnboxInstr::AttributesEqual ( const Instruction & other ) const

inlinevirtual

Reimplemented from dart::Instruction.

Reimplemented in dart::UnboxIntegerInstr.

Definition at line 8707 of file il.h.

                                                               {
    auto const other_unbox = other.AsUnbox();
    return (representation() == other_unbox->representation()) &&
           (speculative_mode_ == other_unbox->speculative_mode_);
  }

◆ Canonicalize()

Definition * dart::UnboxInstr::Canonicalize ( FlowGraph * flow_graph )

virtual

Reimplemented from dart::Definition.

Reimplemented in dart::UnboxIntegerInstr.

Definition at line 3312 of file il.cc.

                                                          {
  if (!HasUses() && !CanDeoptimize()) return nullptr;
 
  // Fold away Unbox<rep>(v) if v has a target representation already.
  Definition* value_defn = value()->definition();
  if (value_defn->representation() == representation()) {
    return value_defn;
  }
 
  BoxInstr* box_defn = value()->definition()->AsBox();
  if (box_defn != nullptr) {
    // Fold away Unbox<rep>(Box<rep>(v)).
    if (box_defn->from_representation() == representation()) {
      return box_defn->value()->definition();
    }
 
    if ((box_defn->from_representation() == kUnboxedDouble) &&
        (representation() == kUnboxedFloat)) {
      Definition* replacement = new DoubleToFloatInstr(
          box_defn->value()->CopyWithType(), DeoptId::kNone);
      flow_graph->InsertBefore(this, replacement, NULL, FlowGraph::kValue);
      return replacement;
    }
 
    if ((box_defn->from_representation() == kUnboxedFloat) &&
        (representation() == kUnboxedDouble)) {
      Definition* replacement = new FloatToDoubleInstr(
          box_defn->value()->CopyWithType(), DeoptId::kNone);
      flow_graph->InsertBefore(this, replacement, NULL, FlowGraph::kValue);
      return replacement;
    }
  }
 
  if (representation() == kUnboxedDouble && value()->BindsToConstant()) {
    const Object& val = value()->BoundConstant();
    if (val.IsInteger()) {
      const Double& double_val = Double::ZoneHandle(
          flow_graph->zone(),
          Double::NewCanonical(Integer::Cast(val).AsDoubleValue()));
      return flow_graph->GetConstant(double_val, kUnboxedDouble);
    } else if (val.IsDouble()) {
      return flow_graph->GetConstant(val, kUnboxedDouble);
    }
  }
 
  if (representation() == kUnboxedFloat && value()->BindsToConstant()) {
    const Object& val = value()->BoundConstant();
    if (val.IsInteger()) {
      double narrowed_val =
          static_cast<float>(Integer::Cast(val).AsDoubleValue());
      return flow_graph->GetConstant(
          Double::ZoneHandle(Double::NewCanonical(narrowed_val)),
          kUnboxedFloat);
    } else if (val.IsDouble()) {
      double narrowed_val = static_cast<float>(Double::Cast(val).value());
      return flow_graph->GetConstant(
          Double::ZoneHandle(Double::NewCanonical(narrowed_val)),
          kUnboxedFloat);
    }
  }
 
  return this;
}

◆ ComputeCanDeoptimize()

virtual bool dart::UnboxInstr::ComputeCanDeoptimize ( ) const

inlinevirtual

Implements dart::Instruction.

Reimplemented in dart::UnboxIntegerInstr.

Definition at line 8680 of file il.h.

                                            {
    if (SpeculativeModeOfInputs() == kNotSpeculative) {
      return false;
    }
 
    const intptr_t value_cid = value()->Type()->ToCid();
    const intptr_t box_cid = BoxCid();
 
    if (value_cid == box_cid) {
      return false;
    }
 
    if (CanConvertSmi() && (value_cid == kSmiCid)) {
      return false;
    }
 
    return true;
  }

◆ Create()

UnboxInstr * dart::UnboxInstr::Create	(	Representation	to,
		Value *	value,
		intptr_t	deopt_id,
		SpeculativeMode	speculative_mode = `kGuardInputs`
	)

static

Definition at line 4043 of file il.cc.

                                                                 {
  switch (to) {
    case kUnboxedInt32:
      // We must truncate if we can't deoptimize.
      return new UnboxInt32Instr(
          speculative_mode == SpeculativeMode::kNotSpeculative
              ? UnboxInt32Instr::kTruncate
              : UnboxInt32Instr::kNoTruncation,
          value, deopt_id, speculative_mode);
 
    case kUnboxedUint32:
      return new UnboxUint32Instr(value, deopt_id, speculative_mode);
 
    case kUnboxedInt64:
      return new UnboxInt64Instr(value, deopt_id, speculative_mode);
 
    case kUnboxedDouble:
    case kUnboxedFloat:
    case kUnboxedFloat32x4:
    case kUnboxedFloat64x2:
    case kUnboxedInt32x4:
      return new UnboxInstr(to, value, deopt_id, speculative_mode);
 
    default:
      UNREACHABLE();
      return nullptr;
  }
}

◆ DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS()

dart::UnboxInstr::DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS	(	UnboxInstr	,
		TemplateDefinition	,
		FIELD_LIST
	)

inline

Definition at line 8723 of file il.h.

          :
  UnboxInstr(Representation representation,
             Value* value,
             intptr_t deopt_id,
             SpeculativeMode speculative_mode)
      : TemplateDefinition(deopt_id),
        representation_(representation),
        speculative_mode_(speculative_mode) {
    // Unboxing doesn't currently handle non-native representations.
    ASSERT_EQUAL(Boxing::NativeRepresentation(representation), representation);
    SetInputAt(0, value);
  }

◆ DeoptimizationTarget()

virtual intptr_t dart::UnboxInstr::DeoptimizationTarget ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 8715 of file il.h.

8715{ return GetDeoptId(); }

dart::Instruction::GetDeoptId

intptr_t GetDeoptId() const

Definition: il.h:1409

◆ representation()

virtual Representation dart::UnboxInstr::representation ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 8703 of file il.h.

8703{ return representation_; }

◆ set_speculative_mode()

void dart::UnboxInstr::set_speculative_mode ( SpeculativeMode value )

inline

Definition at line 8741 of file il.h.

                                                   {
    speculative_mode_ = value;
  }

◆ SpeculativeModeOfInput()

virtual SpeculativeMode dart::UnboxInstr::SpeculativeModeOfInput ( intptr_t index ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 8699 of file il.h.

                                                                       {
    return speculative_mode_;
  }

◆ token_pos()

virtual TokenPosition dart::UnboxInstr::token_pos ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 8717 of file il.h.

8717{ return TokenPosition::kBox; }

◆ value()

Value * dart::UnboxInstr::value ( ) const

inline

Definition at line 8678 of file il.h.

8678{ return inputs_[0]; }

dart::TemplateDefinition< 1, NoThrow, Pure >::inputs_

EmbeddedArray< Value *, N > inputs_

Definition: il.h:2762

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

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ AttributesEqual()

◆ Canonicalize()

◆ ComputeCanDeoptimize()

◆ Create()

◆ DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS()

◆ DeoptimizationTarget()

◆ representation()

◆ set_speculative_mode()

◆ SpeculativeModeOfInput()

◆ token_pos()

◆ value()