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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 {
// 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 PendingOptimizationTable {
public:
// This function should be called before we mark the function for
// optimization. Calling this function ensures that |function| is compiled and
// has a feedback vector allocated. This also holds on to the bytecode
// strongly in pending optimization table preventing the bytecode to be
// flushed.
static void PreparedForOptimization(Isolate* isolate,
Handle<JSFunction> function,
bool allow_heuristic_optimization);
// This function should be called when the function is marked for optimization
// via the intrinsics. This will update the state of the bytecode array in the
// pending optimization table, so that the entry can be removed once the
// function is optimized. If the function is already optimized it removes the
// entry from the table.
static void MarkedForOptimization(Isolate* isolate,
Handle<JSFunction> function);
// This function should be called once the function is optimized. If there is
// an entry in the pending optimization table and it is marked for removal
// then this function removes the entry from pending optimization table.
static void FunctionWasOptimized(Isolate* isolate,
Handle<JSFunction> function);
// This function returns whether a heuristic is allowed to trigger
// optimization the function. This mechanism is used in tests to prevent
// heuristics from interfering with manually triggered optimization.
static bool IsHeuristicOptimizationAllowed(Isolate* isolate,
JSFunction function);
};
} // namespace internal
} // namespace v8
#endif // V8_CODEGEN_PENDING_OPTIMIZATION_TABLE_H_