#include <il.h>

Inheritance diagram for dart::ConstantInstr:

Public Member Functions
	ConstantInstr (const Object &value)

	ConstantInstr (const Object &value, const InstructionSource &source)

virtual CompileType	ComputeType () const

virtual Definition *	Canonicalize (FlowGraph *flow_graph)

const Object &	value () const

bool	IsSmi () const

bool	HasZeroRepresentation () const

virtual bool	ComputeCanDeoptimize () const

virtual void	InferRange (RangeAnalysis analysis, Range range)

virtual bool	AttributesEqual (const Instruction &other) const

virtual TokenPosition	token_pos () const

void	EmitMoveToLocation (FlowGraphCompiler *compiler, const Location &destination, Register tmp=kNoRegister, intptr_t pair_index=0)

PRINT_OPERANDS_TO_SUPPORT DECLARE_ATTRIBUTE &	value ()

Public Member Functions inherited from dart::TemplateDefinition< 0, 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)

Additional Inherited Members
Public Types inherited from dart::TemplateDefinition< 0, 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 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)

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< 0, NoThrow, Pure >
EmbeddedArray< Value *, N >	inputs_

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

Detailed Description

Definition at line 4219 of file il.h.

Constructor & Destructor Documentation

◆ ConstantInstr() [1/2]

dart::ConstantInstr::ConstantInstr ( const Object & value )

inlineexplicit

Definition at line 4221 of file il.h.

4222 : ConstantInstr(value, InstructionSource(TokenPosition::kConstant)) {}

dart::ConstantInstr::value

const Object & value() const

Definition: il.h:4230

dart::ConstantInstr::ConstantInstr

ConstantInstr(const Object &value)

Definition: il.h:4221

◆ ConstantInstr() [2/2]

dart::ConstantInstr::ConstantInstr	(	const Object &	value,
		const InstructionSource &	source
	)

Definition at line 1132 of file il.cc.

    : TemplateDefinition(source), value_(value), token_pos_(source.token_pos) {
  // Check that the value is not an incorrect Integer representation.
  ASSERT(!value.IsMint() || !Smi::IsValid(Mint::Cast(value).AsInt64Value()));
  // Check that clones of fields are not stored as constants.
  ASSERT(!value.IsField() || Field::Cast(value).IsOriginal());
  // Check that all non-Smi objects are heap allocated and in old space.
  ASSERT(value.IsSmi() || value.IsOld());
#if defined(DEBUG)
  // Generally, instances in the flow graph should be canonical. Smis, null
  // values, and sentinel values are canonical by construction and so we skip
  // them here.
  if (!value.IsNull() && !value.IsSmi() && value.IsInstance() &&
      !value.IsCanonical() && (value.ptr() != Object::sentinel().ptr())) {
    // Arrays in ConstantInstrs are usually immutable and canonicalized, but
    // the Arrays created as backing for ArgumentsDescriptors may not be
    // canonicalized for space reasons when inlined in the IL. However, they
    // are still immutable.
    //
    // IRRegExp compilation uses TypeData non-canonical values as "constants".
    // Specifically, the bit tables used for certain character classes are
    // represented as TypedData, and so those values are also neither immutable
    // (as there are no immutable TypedData values) or canonical.
    //
    // LibraryPrefixes are also never canonicalized since their equality is
    // their identity.
    ASSERT(value.IsArray() || value.IsTypedData() || value.IsLibraryPrefix());
  }
#endif
}

Member Function Documentation

◆ AttributesEqual()

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

virtual

Reimplemented from dart::Instruction.

Definition at line 1164 of file il.cc.

                                                                  {
  auto const other_constant = other.AsConstant();
  ASSERT(other_constant != nullptr);
  return (value().ptr() == other_constant->value().ptr() &&
          representation() == other_constant->representation());
}

◆ Canonicalize()

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

virtual

Reimplemented from dart::Definition.

Definition at line 2732 of file il.cc.

                                                             {
  return HasUses() ? this : nullptr;
}

◆ ComputeCanDeoptimize()

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

inlinevirtual

Implements dart::Instruction.

Definition at line 4251 of file il.h.

4251{ return false; }

◆ ComputeType()

CompileType dart::ConstantInstr::ComputeType ( ) const

virtual

Reimplemented from dart::Definition.

Definition at line 1348 of file type_propagator.cc.

                                             {
  if (value().IsNull()) {
    return CompileType::Null();
  }
 
  intptr_t cid = value().GetClassId();
 
  if (cid == kSmiCid && !compiler::target::IsSmi(Smi::Cast(value()).Value())) {
    return CompileType(CompileType::kCannotBeNull,
                       CompileType::kCannotBeSentinel, kMintCid,
                       &AbstractType::ZoneHandle(Type::MintType()));
  }
 
  if ((cid != kTypeArgumentsCid) && value().IsInstance()) {
    // Allocate in old-space since this may be invoked from the
    // background compiler.
    return CompileType(
        cid == kNullCid, cid == kSentinelCid, cid,
        &AbstractType::ZoneHandle(Instance::Cast(value()).GetType(Heap::kOld)));
  } else {
    // Type info for non-instance objects.
    return CompileType::FromCid(cid);
  }
}

◆ EmitMoveToLocation()

void dart::ConstantInstr::EmitMoveToLocation	(	FlowGraphCompiler *	compiler,
		const Location &	destination,
		Register	tmp = `kNoRegister`,
		intptr_t	pair_index = `0`
	)

◆ HasZeroRepresentation()

bool dart::ConstantInstr::HasZeroRepresentation ( ) const

inline

Definition at line 4234 of file il.h.

                                     {
    switch (representation()) {
      case kTagged:
      case kUnboxedUint8:
      case kUnboxedUint16:
      case kUnboxedUint32:
      case kUnboxedInt32:
      case kUnboxedInt64:
        return IsSmi() && compiler::target::SmiValue(value()) == 0;
      case kUnboxedDouble:
        return compiler::target::IsDouble(value()) &&
               bit_cast<uint64_t>(compiler::target::DoubleValue(value())) == 0;
      default:
        return false;
    }
  }

◆ InferRange()

void dart::ConstantInstr::InferRange	(	RangeAnalysis *	analysis,
		Range *	range
	)

virtual

Reimplemented from dart::Definition.

Definition at line 2793 of file range_analysis.cc.

                                                                    {
  if (value_.IsSmi()) {
    int64_t value = Smi::Cast(value_).Value();
    *range = Range(RangeBoundary::FromConstant(value),
                   RangeBoundary::FromConstant(value));
  } else if (value_.IsMint()) {
    int64_t value = Mint::Cast(value_).value();
    *range = Range(RangeBoundary::FromConstant(value),
                   RangeBoundary::FromConstant(value));
  } else {
    // Only Smi and Mint supported.
    FATAL("Unexpected constant: %s\n", value_.ToCString());
  }
}

◆ IsSmi()

bool dart::ConstantInstr::IsSmi ( ) const

inline

Definition at line 4232 of file il.h.

4232{ return compiler::target::IsSmi(value()); }

◆ token_pos()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4257 of file il.h.

4257{ return token_pos_; }

◆ value() [1/2]

PRINT_OPERANDS_TO_SUPPORT DECLARE_ATTRIBUTE & dart::ConstantInstr::value ( )

◆ value() [2/2]

const Object & dart::ConstantInstr::value ( ) const

inline

Definition at line 4230 of file il.h.

4230{ return value_; }

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ConstantInstr() [1/2]

◆ ConstantInstr() [2/2]

Member Function Documentation

◆ AttributesEqual()

◆ Canonicalize()

◆ ComputeCanDeoptimize()

◆ ComputeType()

◆ EmitMoveToLocation()

◆ HasZeroRepresentation()

◆ InferRange()

◆ IsSmi()

◆ token_pos()

◆ value() [1/2]

◆ value() [2/2]