src/wasm/branch-hint-map.h

// Copyright 2021 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_WASM_BRANCH_HINT_MAP_H_
#define V8_WASM_BRANCH_HINT_MAP_H_

#include <unordered_map>

#include "src/base/macros.h"
#include "src/common/globals.h"

namespace v8 {
namespace internal {

namespace wasm {

class V8_EXPORT_PRIVATE BranchHintMap {
 public:
  void insert(uint32_t offset, BranchHint hint) { map_.emplace(offset, hint); }

  BranchHint GetHintFor(uint32_t offset) const {
    auto it = map_.find(offset);
    if (it == map_.end()) {
      return BranchHint::kNone;
    }
    return it->second;
  }

  size_t NumHintsForTesting() const { return map_.size(); }

 private:
  std::unordered_map<uint32_t, BranchHint> map_;
};

using BranchHintInfo = std::unordered_map<uint32_t, BranchHintMap>;

}  // namespace wasm
}  // namespace internal
}  // namespace v8

#endif  // V8_WASM_BRANCH_HINT_MAP_H_