#include <il.h>

Inheritance diagram for dart::LoadCodeUnitsInstr:

Public Member Functions
	LoadCodeUnitsInstr (Value str, Value index, intptr_t element_count, intptr_t class_id, const InstructionSource &source)

TokenPosition	token_pos () const

virtual CompileType	ComputeType () const

virtual Representation	RequiredInputRepresentation (intptr_t idx) const

bool	IsExternal () const

Value *	array () const

Value *	index () const

intptr_t	index_scale () const

intptr_t	class_id () const

intptr_t	element_count () const

bool	can_pack_into_smi () const

virtual bool	ComputeCanDeoptimize () const

virtual Representation	representation () const

void	set_representation (Representation repr)

virtual void	InferRange (RangeAnalysis analysis, Range range)

virtual bool	HasUnknownSideEffects () const

virtual bool	CanTriggerGC () const

Public Member Functions inherited from dart::TemplateDefinition< 2, NoThrow >
	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< 2, NoThrow >
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< 2, NoThrow >
EmbeddedArray< Value *, N >	inputs_

Detailed Description

Definition at line 6856 of file il.h.

Constructor & Destructor Documentation

◆ LoadCodeUnitsInstr()

dart::LoadCodeUnitsInstr::LoadCodeUnitsInstr	(	Value *	str,
		Value *	index,
		intptr_t	element_count,
		intptr_t	class_id,
		const InstructionSource &	source
	)

inline

Definition at line 6858 of file il.h.

      : TemplateDefinition(source),
        class_id_(class_id),
        token_pos_(source.token_pos),
        element_count_(element_count),
        representation_(kTagged) {
    ASSERT(element_count == 1 || element_count == 2 || element_count == 4);
    ASSERT(IsStringClassId(class_id));
    SetInputAt(0, str);
    SetInputAt(1, index);
  }

Member Function Documentation

◆ array()

Value * dart::LoadCodeUnitsInstr::array ( ) const

inline

Definition at line 6892 of file il.h.

6892{ return inputs_[0]; }

dart::TemplateDefinition< 2, NoThrow >::inputs_

EmbeddedArray< Value *, N > inputs_

Definition: il.h:2762

◆ can_pack_into_smi()

bool dart::LoadCodeUnitsInstr::can_pack_into_smi ( ) const

inline

Definition at line 6902 of file il.h.

                                 {
    return element_count() <=
           compiler::target::kSmiBits / (index_scale() * kBitsPerByte);
  }

◆ CanTriggerGC()

virtual bool dart::LoadCodeUnitsInstr::CanTriggerGC ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 6915 of file il.h.

                                    {
    return !can_pack_into_smi() && (representation() == kTagged);
  }

◆ class_id()

intptr_t dart::LoadCodeUnitsInstr::class_id ( ) const

inline

Definition at line 6899 of file il.h.

6899{ return class_id_; }

◆ ComputeCanDeoptimize()

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

inlinevirtual

Implements dart::Instruction.

Definition at line 6907 of file il.h.

6907{ return false; }

◆ ComputeType()

CompileType dart::LoadCodeUnitsInstr::ComputeType ( ) const

virtual

Definition at line 1730 of file type_propagator.cc.

                                                  {
  switch (class_id()) {
    case kOneByteStringCid:
    case kTwoByteStringCid:
      return can_pack_into_smi() ? CompileType::FromCid(kSmiCid)
                                 : CompileType::Int();
    default:
      UNIMPLEMENTED();
      return CompileType::Dynamic();
  }
}

◆ element_count()

intptr_t dart::LoadCodeUnitsInstr::element_count ( ) const

inline

Definition at line 6900 of file il.h.

6900{ return element_count_; }

◆ HasUnknownSideEffects()

virtual bool dart::LoadCodeUnitsInstr::HasUnknownSideEffects ( ) const

inlinevirtual

Implements dart::Instruction.

Definition at line 6913 of file il.h.

6913{ return false; }

◆ index()

Value * dart::LoadCodeUnitsInstr::index ( ) const

inline

Definition at line 6893 of file il.h.

6893{ return inputs_[1]; }

◆ index_scale()

intptr_t dart::LoadCodeUnitsInstr::index_scale ( ) const

inline

Definition at line 6895 of file il.h.

                               {
    return compiler::target::Instance::ElementSizeFor(class_id_);
  }

◆ InferRange()

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

virtual

Definition at line 2962 of file range_analysis.cc.

                                                                         {
  ASSERT(IsStringClassId(class_id()));
  RangeBoundary zero = RangeBoundary::FromConstant(0);
  // Take the number of loaded characters into account when determining the
  // range of the result.
  ASSERT(element_count_ > 0);
  switch (class_id()) {
    case kOneByteStringCid:
      ASSERT(element_count_ <= 4);
      *range = Range(zero, RangeBoundary::FromConstant(
                               Utils::NBitMask(kBitsPerByte * element_count_)));
      break;
    case kTwoByteStringCid:
      ASSERT(element_count_ <= 2);
      *range = Range(zero, RangeBoundary::FromConstant(Utils::NBitMask(
                               2 * kBitsPerByte * element_count_)));
      break;
    default:
      UNREACHABLE();
      break;
  }
}

◆ IsExternal()

bool dart::LoadCodeUnitsInstr::IsExternal ( ) const

inline

Definition at line 6888 of file il.h.

                          {
    return array()->definition()->representation() == kUntagged;
  }

◆ representation()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 6909 of file il.h.

6909{ return representation_; }

◆ RequiredInputRepresentation()

virtual Representation dart::LoadCodeUnitsInstr::RequiredInputRepresentation ( intptr_t idx ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 6879 of file il.h.

                                                                         {
    if (idx == 0) {
      // The string may be tagged or untagged (for external strings).
      return kNoRepresentation;
    }
    ASSERT(idx == 1);
    return kTagged;
  }

◆ set_representation()

void dart::LoadCodeUnitsInstr::set_representation ( Representation repr )

inline

Definition at line 6910 of file il.h.

6910{ representation_ = repr; }

◆ token_pos()

TokenPosition dart::LoadCodeUnitsInstr::token_pos ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 6874 of file il.h.

6874{ return token_pos_; }

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/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

◆ LoadCodeUnitsInstr()

Member Function Documentation

◆ array()

◆ can_pack_into_smi()

◆ CanTriggerGC()

◆ class_id()

◆ ComputeCanDeoptimize()

◆ ComputeType()

◆ element_count()

◆ HasUnknownSideEffects()

◆ index()

◆ index_scale()

◆ InferRange()

◆ IsExternal()

◆ representation()

◆ RequiredInputRepresentation()

◆ set_representation()

◆ token_pos()