#include <il.h>

Inheritance diagram for dart::CheckClassInstr:

Public Member Functions
	CheckClassInstr (Value *value, intptr_t deopt_id, const Cids &cids, const InstructionSource &source)

virtual bool	ComputeCanDeoptimize () const

virtual TokenPosition	token_pos () const

Value *	value () const

const Cids &	cids () const

virtual Instruction *	Canonicalize (FlowGraph *flow_graph)

bool	IsNullCheck () const

bool	IsDeoptIfNull () const

bool	IsDeoptIfNotNull () const

bool	IsBitTest () const

intptr_t	ComputeCidMask () const

virtual bool	AllowsCSE () const

virtual bool	HasUnknownSideEffects () const

virtual bool	AttributesEqual (const Instruction &other) const

DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS(CheckClassInstr, TemplateInstruction, FIELD_LIST) private void	EmitBitTest (FlowGraphCompiler compiler, intptr_t min, intptr_t max, intptr_t mask, compiler::Label deopt)

void	EmitNullCheck (FlowGraphCompiler compiler, compiler::Label deopt)

	DISALLOW_COPY_AND_ASSIGN (CheckClassInstr)

Public Member Functions inherited from dart::TemplateInstruction< 1, NoThrow >
	TemplateInstruction (intptr_t deopt_id=DeoptId::kNone)

	TemplateInstruction (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)

Static Public Member Functions
static bool	IsCompactCidRange (const Cids &cids)

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::TemplateInstruction< 1, NoThrow >
using	BaseClass = typename NoCSE< Instruction, PureInstruction >::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::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::TemplateInstruction< 1, NoThrow >
EmbeddedArray< Value *, N >	inputs_

Detailed Description

Definition at line 10581 of file il.h.

Constructor & Destructor Documentation

◆ CheckClassInstr()

dart::CheckClassInstr::CheckClassInstr	(	Value *	value,
		intptr_t	deopt_id,
		const Cids &	cids,
		const InstructionSource &	source
	)

Definition at line 840 of file il.cc.

    : TemplateInstruction(source, deopt_id),
      cids_(cids),
      is_bit_test_(IsCompactCidRange(cids)),
      token_pos_(source.token_pos) {
  // Expected useful check data.
  const intptr_t number_of_checks = cids.length();
  ASSERT(number_of_checks > 0);
  SetInputAt(0, value);
  // Otherwise use CheckSmiInstr.
  ASSERT(number_of_checks != 1 || !cids[0].IsSingleCid() ||
         cids[0].cid_start != kSmiCid);
}

Member Function Documentation

◆ AllowsCSE()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 10609 of file il.h.

10609{ return true; }

◆ AttributesEqual()

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

virtual

Reimplemented from dart::Instruction.

Definition at line 857 of file il.cc.

                                                                    {
  auto const other_check = other.AsCheckClass();
  ASSERT(other_check != nullptr);
  return cids().Equals(other_check->cids());
}

◆ Canonicalize()

Instruction * dart::CheckClassInstr::Canonicalize ( FlowGraph * flow_graph )

virtual

Reimplemented from dart::Instruction.

Definition at line 3800 of file il.cc.

                                                                {
  const intptr_t value_cid = value()->Type()->ToCid();
  if (value_cid == kDynamicCid) {
    return this;
  }
 
  return cids().HasClassId(value_cid) ? nullptr : this;
}

◆ cids()

const Cids & dart::CheckClassInstr::cids ( ) const

inline

Definition at line 10596 of file il.h.

10596{ return cids_; }

◆ ComputeCanDeoptimize()

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

inlinevirtual

Implements dart::Instruction.

Definition at line 10590 of file il.h.

10590{ return true; }

◆ ComputeCidMask()

intptr_t dart::CheckClassInstr::ComputeCidMask ( ) const

Definition at line 903 of file il.cc.

                                               {
  ASSERT(IsBitTest());
  const uintptr_t one = 1;
  intptr_t min = cids_.ComputeLowestCid();
  intptr_t mask = 0;
  for (intptr_t i = 0; i < cids_.length(); ++i) {
    uintptr_t run;
    uintptr_t range = one + cids_[i].Extent();
    if (range >= static_cast<uintptr_t>(compiler::target::kBitsPerWord)) {
      run = -1;
    } else {
      run = (one << range) - 1;
    }
    mask |= run << (cids_[i].cid_start - min);
  }
  return mask;
}

◆ DISALLOW_COPY_AND_ASSIGN()

dart::CheckClassInstr::DISALLOW_COPY_AND_ASSIGN ( CheckClassInstr )

◆ EmitBitTest()

DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS(CheckClassInstr, TemplateInstruction, FIELD_LIST) private void dart::CheckClassInstr::EmitBitTest	(	FlowGraphCompiler *	compiler,
		intptr_t	min,
		intptr_t	max,
		intptr_t	mask,
		compiler::Label *	deopt
	)

◆ EmitNullCheck()

void dart::CheckClassInstr::EmitNullCheck	(	FlowGraphCompiler *	compiler,
		compiler::Label *	deopt
	)

◆ HasUnknownSideEffects()

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

inlinevirtual

Implements dart::Instruction.

Definition at line 10610 of file il.h.

10610{ return false; }

◆ IsBitTest()

bool dart::CheckClassInstr::IsBitTest ( ) const

Definition at line 899 of file il.cc.

                                      {
  return is_bit_test_;
}

◆ IsCompactCidRange()

bool dart::CheckClassInstr::IsCompactCidRange ( const Cids & cids )

static

Definition at line 885 of file il.cc.

                                                        {
  const intptr_t number_of_checks = cids.length();
  // If there are only two checks, the extra register pressure needed for the
  // dense-cid-range code is not justified.
  if (number_of_checks <= 2) return false;
 
  // TODO(fschneider): Support smis in dense cid checks.
  if (cids.HasClassId(kSmiCid)) return false;
 
  intptr_t min = cids.ComputeLowestCid();
  intptr_t max = cids.ComputeHighestCid();
  return (max - min) < compiler::target::kBitsPerWord;
}

◆ IsDeoptIfNotNull()

bool dart::CheckClassInstr::IsDeoptIfNotNull ( ) const

Definition at line 877 of file il.cc.

                                             {
  if (!cids().IsMonomorphic()) {
    return false;
  }
  const intptr_t cid = cids().MonomorphicReceiverCid();
  return cid == kNullCid;
}

◆ IsDeoptIfNull()

bool dart::CheckClassInstr::IsDeoptIfNull ( ) const

Definition at line 863 of file il.cc.

                                          {
  if (!cids().IsMonomorphic()) {
    return false;
  }
  CompileType* in_type = value()->Type();
  const intptr_t cid = cids().MonomorphicReceiverCid();
  // Performance check: use CheckSmiInstr instead.
  ASSERT(cid != kSmiCid);
  return in_type->is_nullable() && (in_type->ToNullableCid() == cid);
}

◆ IsNullCheck()

bool dart::CheckClassInstr::IsNullCheck ( ) const

inline

Definition at line 10600 of file il.h.

10600{ return IsDeoptIfNull() || IsDeoptIfNotNull(); }

dart::CheckClassInstr::IsDeoptIfNull

bool IsDeoptIfNull() const

Definition: il.cc:863

dart::CheckClassInstr::IsDeoptIfNotNull

bool IsDeoptIfNotNull() const

Definition: il.cc:877

◆ token_pos()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 10592 of file il.h.

10592{ return token_pos_; }

◆ value()

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

inline

Definition at line 10594 of file il.h.

10594{ return inputs_[0]; }

dart::TemplateInstruction< 1, NoThrow >::inputs_

EmbeddedArray< Value *, N > inputs_

Definition: il.h:1522

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

Constructor & Destructor Documentation

◆ CheckClassInstr()

Member Function Documentation

◆ AllowsCSE()

◆ AttributesEqual()

◆ Canonicalize()

◆ cids()

◆ ComputeCanDeoptimize()

◆ ComputeCidMask()

◆ DISALLOW_COPY_AND_ASSIGN()

◆ EmitBitTest()

◆ EmitNullCheck()

◆ HasUnknownSideEffects()

◆ IsBitTest()

◆ IsCompactCidRange()

◆ IsDeoptIfNotNull()

◆ IsDeoptIfNull()

◆ IsNullCheck()

◆ token_pos()

◆ value()