pending-optimization-table.h

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// 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_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_
#define V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_
 
#include "src/common/globals.h"
 
namespace v8 {
namespace internal {
 
class IsCompiledScope;
 
// This class adds the functionality to properly test the optimized code. This
// is only for use in tests. All these functions should only be called when
// testing_d8_flag_for_tests is set.
class ManualOptimizationTable {
 public:
  // This function should be called before we mark the function for
  // optimization. It should be called when |function| is already compiled and
  // has a feedback vector allocated, and it blocks heuristic optimization.
  //
  // This also holds on to the bytecode strongly, preventing the bytecode from
  // being flushed.
  static void MarkFunctionForManualOptimization(
      Isolate* isolate, DirectHandle<JSFunction> function,
      IsCompiledScope* is_compiled_scope);
 
  // Returns true if MarkFunctionForManualOptimization was called with this
  // function.
  static bool IsMarkedForManualOptimization(Isolate* isolate,
                                            Tagged<JSFunction> function);
};
 
}  // namespace internal
}  // namespace v8
 
#endif  // V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_