chromium/v8/src/compiler/map-inference.h

// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_COMPILER_MAP_INFERENCE_H_
#define V8_COMPILER_MAP_INFERENCE_H_

#include "src/compiler/graph-reducer.h"
#include "src/objects/instance-type.h"
#include "src/objects/map.h"

namespace v8 {
namespace internal {

namespace compiler {

class CompilationDependencies;
struct FeedbackSource;
class JSGraph;
class JSHeapBroker;
class Node;

// The MapInference class provides access to the "inferred" maps of an
// {object}. This information can be either "reliable", meaning that the object
// is guaranteed to have one of these maps at runtime, or "unreliable", meaning
// that the object is guaranteed to have HAD one of these maps.
//
// The MapInference class does not expose whether or not the information is
// reliable. A client is expected to eventually make the information reliable by
// calling one of several methods that will either insert map checks, or record
// stability dependencies (or do nothing if the information was already
// reliable).
class MapInference { … };

}  // namespace compiler
}  // namespace internal
}  // namespace v8

#endif  // V8_COMPILER_MAP_INFERENCE_H_