dart::BoxInt64Instr Class Reference

#include <il.h>

Inheritance diagram for dart::BoxInt64Instr:

Public Member Functions
	BoxInt64Instr (Value *value)
virtual Definition *	Canonicalize (FlowGraph *flow_graph)
Public Member Functions inherited from dart::BoxIntegerInstr
	BoxIntegerInstr (Representation representation, Value *value)
virtual bool	ValueFitsSmi () const
virtual void	InferRange (RangeAnalysis *analysis, Range *range)
virtual CompileType	ComputeType () const
virtual bool	RecomputeType ()
virtual bool	CanTriggerGC () const
Public Member Functions inherited from dart::BoxInstr
Value *	value () const
Representation	from_representation () const
virtual bool	ComputeCanDeoptimize () const
virtual intptr_t	DeoptimizationTarget () const
virtual Representation	RequiredInputRepresentation (intptr_t idx) const
virtual bool	AttributesEqual (const Instruction &other) const
Definition *	Canonicalize (FlowGraph *flow_graph)
virtual TokenPosition	token_pos () const
virtual SpeculativeMode	SpeculativeModeOfInput (intptr_t index) const
	DECLARE_INSTRUCTION_SERIALIZABLE_FIELDS (BoxInstr, TemplateDefinition, FIELD_LIST) protected
Public Member Functions inherited from dart::TemplateDefinition< 1, 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

Additional Inherited Members
Public Types inherited from dart::TemplateDefinition< 1, NoThrow, Pure >
using	BaseClass = typename Pure< Definition, PureDefinition >::Base
Static Public Member Functions inherited from dart::BoxInstr
static BoxInstr *	Create (Representation from, Value *value)
Protected Attributes inherited from dart::TemplateDefinition< 1, NoThrow, Pure >
EmbeddedArray< Value *, N >	inputs_

Detailed Description

Definition at line 8608 of file il.h.

Constructor & Destructor Documentation

BoxInt64Instr()

dart::BoxInt64Instr::BoxInt64Instr ( Value *  value )

inlineexplicit

Definition at line 8610 of file il.h.

      : BoxIntegerInstr(kUnboxedInt64, value) {}

Member Function Documentation

Canonicalize()

Definition * dart::BoxInt64Instr::Canonicalize ( FlowGraph *  flow_graph )

virtual

Reimplemented from dart::BoxIntegerInstr.

Definition at line 3264 of file il.cc.

                                                             {
  Definition* replacement = BoxIntegerInstr::Canonicalize(flow_graph);
  if (replacement != this) {
    return replacement;
  }
 
  // For all x, box(unbox(x)) = x.
  if (auto unbox = value()->definition()->AsUnboxInt64()) {
    if (unbox->SpeculativeModeOfInputs() == kNotSpeculative) {
      return unbox->value()->definition();
    }
  } else if (auto unbox = value()->definition()->AsUnboxedConstant()) {
    return flow_graph->GetConstant(unbox->value());
  }
 
  // Find a more precise box instruction.
  if (auto conv = value()->definition()->AsIntConverter()) {
    Definition* replacement;
    if (conv->from() == kUntagged) {
      return this;
    }
    switch (conv->from()) {
      case kUnboxedInt32:
        replacement = new BoxInt32Instr(conv->value()->CopyWithType());
        break;
      case kUnboxedUint32:
        replacement = new BoxUint32Instr(conv->value()->CopyWithType());
        break;
      default:
        UNREACHABLE();
        break;
    }
    flow_graph->InsertBefore(this, replacement, nullptr, FlowGraph::kValue);
    return replacement;
  }
 
  return this;
}

---

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