#include <il.h>

Inheritance diagram for dart::AssertAssignableInstr:

Public Types
enum	Kind { FOR_EACH_ASSERT_ASSIGNABLE_KIND =(KIND_DEFN) }

enum	{ kInstancePos = 0 , kDstTypePos = 1 , kInstantiatorTAVPos = 2 , kFunctionTAVPos = 3 , kNumInputs = 4 }

Public Types inherited from dart::TemplateDefinition< 4, Throws, 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 >

Public Member Functions
	AssertAssignableInstr (const InstructionSource &source, Value value, Value dst_type, Value instantiator_type_arguments, Value function_type_arguments, const String &dst_name, intptr_t deopt_id, Kind kind=kUnknown)

virtual intptr_t	statistics_tag () const

virtual CompileType	ComputeType () const

virtual bool	RecomputeType ()

Value *	value () const

Value *	dst_type () const

Value *	instantiator_type_arguments () const

Value *	function_type_arguments () const

virtual TokenPosition	token_pos () const

const String &	dst_name () const

virtual bool	ComputeCanDeoptimize () const

virtual bool	ComputeCanDeoptimizeAfterCall () const

virtual intptr_t	NumberOfInputsConsumedBeforeCall () const

virtual bool	CanBecomeDeoptimizationTarget () const

virtual Definition *	Canonicalize (FlowGraph *flow_graph)

virtual bool	AttributesEqual (const Instruction &other) const

virtual Value *	RedefinedValue () const

virtual void	InferRange (RangeAnalysis analysis, Range range)

Public Member Functions inherited from dart::TemplateDefinition< 4, Throws, 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 const char *	KindToCString (Kind kind)

static bool	ParseKind (const char str, Kind out)

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
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< 4, Throws, Pure >
EmbeddedArray< Value *, N >	inputs_

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

Detailed Description

Definition at line 4374 of file il.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
kInstancePos
kDstTypePos
kInstantiatorTAVPos
kFunctionTAVPos
kNumInputs

Definition at line 4389 of file il.h.

       {
    kInstancePos = 0,
    kDstTypePos = 1,
    kInstantiatorTAVPos = 2,
    kFunctionTAVPos = 3,
    kNumInputs = 4,
  };

◆ Kind

enum dart::AssertAssignableInstr::Kind

Enumerator
FOR_EACH_ASSERT_ASSIGNABLE_KIND

Definition at line 4383 of file il.h.

4383{ FOR_EACH_ASSERT_ASSIGNABLE_KIND(KIND_DEFN) };

dart::AssertAssignableInstr::FOR_EACH_ASSERT_ASSIGNABLE_KIND

@ FOR_EACH_ASSERT_ASSIGNABLE_KIND

Definition: il.h:4383

KIND_DEFN

#define KIND_DEFN(name)

Definition: il.h:4382

Constructor & Destructor Documentation

◆ AssertAssignableInstr()

dart::AssertAssignableInstr::AssertAssignableInstr	(	const InstructionSource &	source,
		Value *	value,
		Value *	dst_type,
		Value *	instantiator_type_arguments,
		Value *	function_type_arguments,
		const String &	dst_name,
		intptr_t	deopt_id,
		Kind	kind = `kUnknown`
	)

inline

Definition at line 4397 of file il.h.

      : TemplateDefinition(source, deopt_id),
        token_pos_(source.token_pos),
        dst_name_(dst_name),
        kind_(kind) {
    ASSERT(!dst_name.IsNull());
    SetInputAt(kInstancePos, value);
    SetInputAt(kDstTypePos, dst_type);
    SetInputAt(kInstantiatorTAVPos, instantiator_type_arguments);
    SetInputAt(kFunctionTAVPos, function_type_arguments);
  }

Member Function Documentation

◆ AttributesEqual()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4456 of file il.h.

4456{ return true; }

◆ CanBecomeDeoptimizationTarget()

virtual bool dart::AssertAssignableInstr::CanBecomeDeoptimizationTarget ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4448 of file il.h.

                                                     {
    // AssertAssignable instructions that are specialized by the optimizer
    // (e.g. replaced with CheckClass) need a deoptimization descriptor before.
    return true;
  }

◆ Canonicalize()

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

virtual

Reimplemented from dart::Definition.

Definition at line 3073 of file il.cc.

                                                                     {
  // We need dst_type() to be a constant AbstractType to perform any
  // canonicalization.
  if (!dst_type()->BindsToConstant()) return this;
  const auto& abs_type = AbstractType::Cast(dst_type()->BoundConstant());
 
  if (abs_type.IsTopTypeForSubtyping() ||
      (FLAG_eliminate_type_checks &&
       value()->Type()->IsAssignableTo(abs_type))) {
    return value()->definition();
  }
  if (abs_type.IsInstantiated()) {
    return this;
  }
 
  // For uninstantiated target types: If the instantiator and function
  // type arguments are constant, instantiate the target type here.
  // Note: these constant type arguments might not necessarily correspond
  // to the correct instantiator because AssertAssignable might
  // be located in the unreachable part of the graph (e.g.
  // it might be dominated by CheckClass that always fails).
  // This means that the code below must guard against such possibility.
  Thread* thread = Thread::Current();
  Zone* Z = thread->zone();
 
  const TypeArguments* instantiator_type_args = nullptr;
  const TypeArguments* function_type_args = nullptr;
 
  if (instantiator_type_arguments()->BindsToConstant()) {
    const Object& val = instantiator_type_arguments()->BoundConstant();
    instantiator_type_args = (val.ptr() == TypeArguments::null())
                                 ? &TypeArguments::null_type_arguments()
                                 : &TypeArguments::Cast(val);
  }
 
  if (function_type_arguments()->BindsToConstant()) {
    const Object& val = function_type_arguments()->BoundConstant();
    function_type_args =
        (val.ptr() == TypeArguments::null())
            ? &TypeArguments::null_type_arguments()
            : &TypeArguments::Cast(function_type_arguments()->BoundConstant());
  }
 
  // If instantiator_type_args are not constant try to match the pattern
  // obj.field.:type_arguments where field's static type exactness state
  // tells us that all values stored in the field have exact superclass.
  // In this case we know the prefix of the actual type arguments vector
  // and can try to instantiate the type using just the prefix.
  //
  // Note: TypeParameter::InstantiateFrom returns an error if we try
  // to instantiate it from a vector that is too short.
  if (instantiator_type_args == nullptr) {
    if (LoadFieldInstr* load_type_args =
            instantiator_type_arguments()->definition()->AsLoadField()) {
      if (load_type_args->slot().IsTypeArguments()) {
        if (LoadFieldInstr* load_field = load_type_args->instance()
                                             ->definition()
                                             ->OriginalDefinition()
                                             ->AsLoadField()) {
          if (load_field->slot().IsDartField() &&
              load_field->slot()
                  .field()
                  .static_type_exactness_state()
                  .IsHasExactSuperClass()) {
            instantiator_type_args = &TypeArguments::Handle(
                Z, Type::Cast(AbstractType::Handle(
                                  Z, load_field->slot().field().type()))
                       .GetInstanceTypeArguments(thread));
          }
        }
      }
    }
  }
 
  if ((instantiator_type_args != nullptr) && (function_type_args != nullptr)) {
    AbstractType& new_dst_type = AbstractType::Handle(
        Z, abs_type.InstantiateFrom(*instantiator_type_args,
                                    *function_type_args, kAllFree, Heap::kOld));
    if (new_dst_type.IsNull()) {
      // Failed instantiation in dead code.
      return this;
    }
    new_dst_type = new_dst_type.Canonicalize(Thread::Current());
 
    // Successfully instantiated destination type: update the type attached
    // to this instruction and set type arguments to null because we no
    // longer need them (the type was instantiated).
    dst_type()->BindTo(flow_graph->GetConstant(new_dst_type));
    instantiator_type_arguments()->BindTo(flow_graph->constant_null());
    function_type_arguments()->BindTo(flow_graph->constant_null());
 
    if (new_dst_type.IsTopTypeForSubtyping() ||
        (FLAG_eliminate_type_checks &&
         value()->Type()->IsAssignableTo(new_dst_type))) {
      return value()->definition();
    }
  }
  return this;
}

◆ ComputeCanDeoptimize()

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

inlinevirtual

Implements dart::Instruction.

Definition at line 4432 of file il.h.

4432{ return false; }

◆ ComputeCanDeoptimizeAfterCall()

virtual bool dart::AssertAssignableInstr::ComputeCanDeoptimizeAfterCall ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4433 of file il.h.

                                                     {
    return !CompilerState::Current().is_aot();
  }

◆ ComputeType()

CompileType dart::AssertAssignableInstr::ComputeType ( ) const

virtual

Reimplemented from dart::Definition.

Definition at line 1373 of file type_propagator.cc.

                                                     {
  CompileType* value_type = value()->Type();
 
  const AbstractType* abs_type = &AbstractType::dynamic_type();
  if (dst_type()->BindsToConstant() &&
      dst_type()->BoundConstant().IsAbstractType()) {
    abs_type = &AbstractType::Cast(dst_type()->BoundConstant());
    if (value_type->IsSubtypeOf(*abs_type)) {
      return *value_type;
    }
  }
  return CompileType::FromAbstractType(*abs_type, value_type->is_nullable(),
                                       CompileType::kCannotBeSentinel);
}

◆ dst_name()

const String & dart::AssertAssignableInstr::dst_name ( ) const

inline

Definition at line 4430 of file il.h.

4430{ return dst_name_; }

◆ dst_type()

Value * dart::AssertAssignableInstr::dst_type ( ) const

inline

Definition at line 4423 of file il.h.

4423{ return inputs_[kDstTypePos]; }

dart::TemplateDefinition< 4, Throws, Pure >::inputs_

EmbeddedArray< Value *, N > inputs_

Definition: il.h:2762

◆ function_type_arguments()

Value * dart::AssertAssignableInstr::function_type_arguments ( ) const

inline

Definition at line 4427 of file il.h.

4427{ return inputs_[kFunctionTAVPos]; }

◆ InferRange()

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

virtual

Reimplemented from dart::Definition.

Definition at line 3146 of file range_analysis.cc.

                                                                            {
  const Range* value_range = value()->definition()->range();
  if (!Range::IsUnknown(value_range)) {
    *range = *value_range;
  } else {
    *range = Range::Full(RangeBoundary::kRangeBoundaryInt64);
  }
}

◆ instantiator_type_arguments()

Value * dart::AssertAssignableInstr::instantiator_type_arguments ( ) const

inline

Definition at line 4424 of file il.h.

                                             {
    return inputs_[kInstantiatorTAVPos];
  }

◆ KindToCString()

const char * dart::AssertAssignableInstr::KindToCString ( Kind kind )

static

Definition at line 816 of file il.cc.

                                                          {
  switch (kind) {
#define KIND_CASE(name)                                                        \
  case k##name:                                                                \
    return #name;
    FOR_EACH_ASSERT_ASSIGNABLE_KIND(KIND_CASE)
#undef KIND_CASE
    default:
      UNREACHABLE();
      return nullptr;
  }
}

◆ NumberOfInputsConsumedBeforeCall()

virtual intptr_t dart::AssertAssignableInstr::NumberOfInputsConsumedBeforeCall ( ) const

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4436 of file il.h.

                                                            {
#if !defined(TARGET_ARCH_IA32)
    return InputCount();
#else
    // The ia32 implementation calls the stub by pushing the input registers
    // in the same order onto the stack thereby making the deopt-env correct.
    // (Due to lack of registers we cannot use all-argument calling convention
    // as in other architectures.)
    return 0;
#endif
  }

◆ ParseKind()

bool dart::AssertAssignableInstr::ParseKind	(	const char *	str,
		Kind *	out
	)

static

Definition at line 829 of file il.cc.

                                                                {
#define KIND_CASE(name)                                                        \
  if (strcmp(str, #name) == 0) {                                               \
    *out = Kind::k##name;                                                      \
    return true;                                                               \
  }
  FOR_EACH_ASSERT_ASSIGNABLE_KIND(KIND_CASE)
#undef KIND_CASE
  return false;
}

◆ RecomputeType()

bool dart::AssertAssignableInstr::RecomputeType ( )

virtual

Reimplemented from dart::Definition.

Definition at line 1388 of file type_propagator.cc.

                                          {
  return UpdateType(ComputeType());
}

◆ RedefinedValue()

Value * dart::AssertAssignableInstr::RedefinedValue ( ) const

virtual

Reimplemented from dart::Definition.

Definition at line 549 of file il.cc.

                                                   {
  return value();
}

◆ statistics_tag()

intptr_t dart::AssertAssignableInstr::statistics_tag ( ) const

virtual

Reimplemented from dart::Instruction.

Definition at line 6020 of file il.cc.

                                                     {
  switch (kind_) {
    case kParameterCheck:
      return CombinedCodeStatistics::kTagAssertAssignableParameterCheck;
    case kInsertedByFrontend:
      return CombinedCodeStatistics::kTagAssertAssignableInsertedByFrontend;
    case kFromSource:
      return CombinedCodeStatistics::kTagAssertAssignableFromSource;
    case kUnknown:
      break;
  }
 
  return tag();
}

◆ token_pos()

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

inlinevirtual

Reimplemented from dart::Instruction.

Definition at line 4429 of file il.h.

4429{ return token_pos_; }

◆ value()

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

inline

Definition at line 4422 of file il.h.

4422{ return inputs_[kInstancePos]; }

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 Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

◆ Kind

Constructor & Destructor Documentation

◆ AssertAssignableInstr()

Member Function Documentation

◆ AttributesEqual()

◆ CanBecomeDeoptimizationTarget()

◆ Canonicalize()

◆ ComputeCanDeoptimize()

◆ ComputeCanDeoptimizeAfterCall()

◆ ComputeType()

◆ dst_name()

◆ dst_type()

◆ function_type_arguments()

◆ InferRange()

◆ instantiator_type_arguments()

◆ KindToCString()

◆ NumberOfInputsConsumedBeforeCall()

◆ ParseKind()

◆ RecomputeType()

◆ RedefinedValue()

◆ statistics_tag()

◆ token_pos()

◆ value()