V8 Project
Public Member Functions | List of all members
v8::internal::HControlInstruction Class Referenceabstract

#include <hydrogen-instructions.h>

+ Inheritance diagram for v8::internal::HControlInstruction:
+ Collaboration diagram for v8::internal::HControlInstruction:

Public Member Functions

virtual HBasicBlock * SuccessorAt (int i) const =0
 
virtual int SuccessorCount () const =0
 
virtual void SetSuccessorAt (int i, HBasicBlock *block)=0
 
virtual OStream & PrintDataTo (OStream &os) const OVERRIDE
 
virtual bool KnownSuccessorBlock (HBasicBlock **block)
 
HBasicBlock * FirstSuccessor ()
 
HBasicBlock * SecondSuccessor ()
 
void Not ()
 
- Public Member Functions inherited from v8::internal::HInstruction
HInstruction * next () const
 
HInstruction * previous () const
 
virtual OStream & PrintTo (OStream &os) const OVERRIDE
 
bool IsLinked () const
 
void Unlink ()
 
void InsertBefore (HInstruction *next)
 
template<class T >
T * Prepend (T *instr)
 
void InsertAfter (HInstruction *previous)
 
template<class T >
T * Append (T *instr)
 
virtual HSourcePosition position () const OVERRIDE
 
bool has_position () const
 
void set_position (HSourcePosition position)
 
virtual HSourcePosition operand_position (int index) const OVERRIDE
 
void set_operand_position (Zone *zone, int index, HSourcePosition pos)
 
bool Dominates (HInstruction *other)
 
bool CanTruncateToSmi () const
 
bool CanTruncateToInt32 () const
 
virtual LInstruction * CompileToLithium (LChunkBuilder *builder)=0
 
bool CanDeoptimize ()
 
virtual bool HasStackCheck ()
 
- Public Member Functions inherited from v8::internal::HValue
 STATIC_ASSERT (kLastFlag< kBitsPerInt)
 
virtual Opcode opcode () const =0
 
bool IsPhi () const
 
bool IsBitwiseBinaryShift ()
 
 HValue (HType type=HType::Tagged())
 
virtual ~HValue ()
 
HBasicBlock * block () const
 
void SetBlock (HBasicBlock *block)
 
Isolate * isolate () const
 
int id () const
 
void set_id (int id)
 
HUseIterator uses () const
 
virtual bool EmitAtUses ()
 
Representation representation () const
 
void ChangeRepresentation (Representation r)
 
virtual void AssumeRepresentation (Representation r)
 
virtual Representation KnownOptimalRepresentation ()
 
HType type () const
 
void set_type (HType new_type)
 
virtual int RedefinedOperandIndex ()
 
bool IsInformativeDefinition ()
 
HValue * RedefinedOperand ()
 
bool CanReplaceWithDummyUses ()
 
virtual int argument_delta () const
 
virtual bool IsPurelyInformativeDefinition ()
 
HValue * ActualValue ()
 
bool IsInteger32Constant ()
 
int32_t GetInteger32Constant ()
 
bool EqualsInteger32Constant (int32_t value)
 
bool IsDefinedAfter (HBasicBlock *other) const
 
virtual int OperandCount () const =0
 
virtual HValue * OperandAt (int index) const =0
 
void SetOperandAt (int index, HValue *value)
 
void DeleteAndReplaceWith (HValue *other)
 
void ReplaceAllUsesWith (HValue *other)
 
bool HasNoUses () const
 
bool HasOneUse () const
 
bool HasMultipleUses () const
 
int UseCount () const
 
void Kill ()
 
int flags () const
 
void SetFlag (Flag f)
 
void ClearFlag (Flag f)
 
bool CheckFlag (Flag f) const
 
void CopyFlag (Flag f, HValue *other)
 
bool CheckUsesForFlag (Flag f) const
 
bool CheckUsesForFlag (Flag f, HValue **value) const
 
bool HasAtLeastOneUseWithFlagAndNoneWithout (Flag f) const
 
GVNFlagSet ChangesFlags () const
 
GVNFlagSet DependsOnFlags () const
 
void SetChangesFlag (GVNFlag f)
 
void SetDependsOnFlag (GVNFlag f)
 
void ClearChangesFlag (GVNFlag f)
 
void ClearDependsOnFlag (GVNFlag f)
 
bool CheckChangesFlag (GVNFlag f) const
 
bool CheckDependsOnFlag (GVNFlag f) const
 
void SetAllSideEffects ()
 
void ClearAllSideEffects ()
 
bool HasSideEffects () const
 
bool HasObservableSideEffects () const
 
GVNFlagSet SideEffectFlags () const
 
GVNFlagSet ObservableChangesFlags () const
 
Range * range () const
 
bool HasRange () const
 
void AddNewRange (Range *r, Zone *zone)
 
void RemoveLastAddedRange ()
 
void ComputeInitialRange (Zone *zone)
 
virtual bool HasEscapingOperandAt (int index)
 
virtual bool HasOutOfBoundsAccess (int size)
 
virtual Representation observed_input_representation (int index)
 
virtual Representation RequiredInputRepresentation (int index)=0
 
virtual void InferRepresentation (HInferRepresentationPhase *h_infer)
 
virtual HValue * Canonicalize ()
 
bool Equals (HValue *other)
 
virtual intptr_t Hashcode ()
 
virtual void FinalizeUniqueness ()
 
const char * Mnemonic () const
 
bool HasMonomorphicJSObjectType ()
 
virtual Handle< Map > GetMonomorphicJSObjectMap ()
 
bool UpdateInferredType ()
 
virtual HType CalculateInferredType ()
 
virtual bool HandleSideEffectDominator (GVNFlag side_effect, HValue *dominator)
 
bool CannotBeEliminated () const
 
virtual bool TryDecompose (DecompositionResult *decomposition)
 
bool ToStringCanBeObserved () const
 
bool ToNumberCanBeObserved () const
 
MinusZeroMode GetMinusZeroMode ()
 
- Public Member Functions inherited from v8::internal::ZoneObject
 INLINE (void *operator new(size_t size, Zone *zone))
 
void operator delete (void *, size_t)
 
void operator delete (void *pointer, Zone *zone)
 

Additional Inherited Members

- Public Types inherited from v8::internal::HValue
enum  Flag {
  kFlexibleRepresentation , kCannotBeTagged , kUseGVN , kTrackSideEffectDominators ,
  kCanOverflow , kBailoutOnMinusZero , kCanBeDivByZero , kLeftCanBeMinInt ,
  kLeftCanBeNegative , kLeftCanBePositive , kAllowUndefinedAsNaN , kIsArguments ,
  kTruncatingToInt32 , kAllUsesTruncatingToInt32 , kTruncatingToSmi , kAllUsesTruncatingToSmi ,
  kIsDead , kUint32 , kHasNoObservableSideEffects , kCantBeReplaced ,
  kIsLive , kEndsLiveRange = kIsLive , kLastFlag = kIsLive
}
 
enum  Opcode { kPhi }
 
- Static Public Member Functions inherited from v8::internal::HValue
static HValue * cast (HValue *value)
 
- Static Public Attributes inherited from v8::internal::HValue
static const int kNoNumber = -1
 
static const int kNoRedefinedOperand = -1
 
- Protected Member Functions inherited from v8::internal::HInstruction
 HInstruction (HType type=HType::Tagged())
 
virtual void DeleteFromGraph () OVERRIDE
 
- Protected Member Functions inherited from v8::internal::HValue
virtual bool DataEquals (HValue *other)
 
bool ToStringOrToNumberCanBeObserved () const
 
virtual Representation RepresentationFromInputs ()
 
virtual Representation RepresentationFromUses ()
 
Representation RepresentationFromUseRequirements ()
 
bool HasNonSmiUse ()
 
virtual void UpdateRepresentation (Representation new_rep, HInferRepresentationPhase *h_infer, const char *reason)
 
void AddDependantsToWorklist (HInferRepresentationPhase *h_infer)
 
virtual void RepresentationChanged (Representation to)
 
virtual Range * InferRange (Zone *zone)
 
virtual void InternalSetOperandAt (int index, HValue *value)=0
 
void clear_block ()
 
void set_representation (Representation r)
 
HUseListNode * RemoveUse (HValue *value, int index)
 
void RegisterUse (int index, HValue *new_value)
 
- Static Protected Member Functions inherited from v8::internal::HValue
static GVNFlagSet AllFlagSet ()
 
static GVNFlagSet AllSideEffectsFlagSet ()
 
static GVNFlagSet AllObservableSideEffectsFlagSet ()
 
- Protected Attributes inherited from v8::internal::HValue
HBasicBlock * block_
 
int id_
 
Representation representation_
 
HType type_
 
HUseListNode * use_list_
 
Range * range_
 
int flags_
 
GVNFlagSet changes_flags_
 
GVNFlagSet depends_on_flags_
 

Detailed Description

Definition at line 1255 of file hydrogen-instructions.h.

Member Function Documentation

◆ FirstSuccessor()

HBasicBlock* v8::internal::HControlInstruction::FirstSuccessor ( )
inline

Definition at line 1268 of file hydrogen-instructions.h.

1268  {
1269  return SuccessorCount() > 0 ? SuccessorAt(0) : NULL;
1270  }
v8::internal::HControlInstruction::SuccessorCount
virtual int SuccessorCount() const =0
v8::internal::HControlInstruction::SuccessorAt
virtual HBasicBlock * SuccessorAt(int i) const =0
NULL
enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be NULL
Definition: flag-definitions.h:407

References NULL, SuccessorAt(), and SuccessorCount().

Referenced by v8::internal::HRangeAnalysisPhase::InferControlFlowRange().

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◆ KnownSuccessorBlock()

virtual bool v8::internal::HControlInstruction::KnownSuccessorBlock ( HBasicBlock **  block)
inlinevirtual

Reimplemented in v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::HCompareObjectEqAndBranch, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::HCompareNumericAndBranch, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, and v8::internal::FINAL< kOperandKind, kNumCachedOperands >.

Definition at line 1263 of file hydrogen-instructions.h.

1263  {
1264  *block = NULL;
1265  return false;
1266  }
v8::internal::HValue::block
HBasicBlock * block() const
Definition: hydrogen-instructions.h:575

References v8::internal::HValue::block(), and NULL.

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◆ Not()

void v8::internal::HControlInstruction::Not ( )
inline

Definition at line 1275 of file hydrogen-instructions.h.

1275  {
1276  HBasicBlock* swap = SuccessorAt(0);
1277  SetSuccessorAt(0, SuccessorAt(1));
1278  SetSuccessorAt(1, swap);
1279  }
v8::internal::HControlInstruction::SetSuccessorAt
virtual void SetSuccessorAt(int i, HBasicBlock *block)=0

References v8::internal::HInstruction::HBasicBlock, SetSuccessorAt(), and SuccessorAt().

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◆ PrintDataTo()

OStream & v8::internal::HControlInstruction::PrintDataTo ( OStream &  os) const
virtual

Reimplemented from v8::internal::HInstruction.

Reimplemented in v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::HStringCompareAndBranch, v8::internal::HCompareObjectEqAndBranch, v8::internal::HCompareNumericAndBranch, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::HUnaryControlInstruction, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, v8::internal::FINAL< kOperandKind, kNumCachedOperands >, and v8::internal::FINAL< kOperandKind, kNumCachedOperands >.

Definition at line 1124 of file hydrogen-instructions.cc.

1124  { // NOLINT
1125  os << " goto (";
1126  bool first_block = true;
1127  for (HSuccessorIterator it(this); !it.Done(); it.Advance()) {
1128  if (!first_block) os << ", ";
1129  os << *it.Current();
1130  first_block = false;
1131  }
1132  return os << ")";
1133 }

Referenced by v8::internal::HUnaryControlInstruction::PrintDataTo().

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◆ SecondSuccessor()

HBasicBlock* v8::internal::HControlInstruction::SecondSuccessor ( )
inline

Definition at line 1271 of file hydrogen-instructions.h.

1271  {
1272  return SuccessorCount() > 1 ? SuccessorAt(1) : NULL;
1273  }

References NULL, SuccessorAt(), and SuccessorCount().

Referenced by v8::internal::HRangeAnalysisPhase::InferControlFlowRange().

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◆ SetSuccessorAt()

virtual void v8::internal::HControlInstruction::SetSuccessorAt ( int  i,
HBasicBlock *  block 
)
pure virtual

Implemented in v8::internal::HTemplateControlInstruction< S, V >, v8::internal::HTemplateControlInstruction< 2, 3 >, v8::internal::HTemplateControlInstruction< 2, 2 >, v8::internal::HTemplateControlInstruction< 0, 3 >, v8::internal::HTemplateControlInstruction< 2, 1 >, v8::internal::HTemplateControlInstruction< 2, 0 >, v8::internal::HTemplateControlInstruction< 1, 0 >, and v8::internal::HTemplateControlInstruction< 0, 0 >.

Referenced by Not().

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◆ SuccessorAt()

virtual HBasicBlock* v8::internal::HControlInstruction::SuccessorAt ( int  i) const
pure virtual

Implemented in v8::internal::HTemplateControlInstruction< S, V >, v8::internal::HTemplateControlInstruction< 2, 3 >, v8::internal::HTemplateControlInstruction< 2, 2 >, v8::internal::HTemplateControlInstruction< 0, 3 >, v8::internal::HTemplateControlInstruction< 2, 1 >, v8::internal::HTemplateControlInstruction< 2, 0 >, v8::internal::HTemplateControlInstruction< 1, 0 >, and v8::internal::HTemplateControlInstruction< 0, 0 >.

Referenced by v8::internal::HCheckTable::Copy(), FirstSuccessor(), Not(), and SecondSuccessor().

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◆ SuccessorCount()

virtual int v8::internal::HControlInstruction::SuccessorCount ( ) const
pure virtual

Implemented in v8::internal::HTemplateControlInstruction< S, V >, v8::internal::HTemplateControlInstruction< 2, 3 >, v8::internal::HTemplateControlInstruction< 2, 2 >, v8::internal::HTemplateControlInstruction< 0, 3 >, v8::internal::HTemplateControlInstruction< 2, 1 >, v8::internal::HTemplateControlInstruction< 2, 0 >, v8::internal::HTemplateControlInstruction< 1, 0 >, and v8::internal::HTemplateControlInstruction< 0, 0 >.

Referenced by FirstSuccessor(), and SecondSuccessor().

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The documentation for this class was generated from the following files: