folly/folly/algorithm/simd/detail/UnrollUtils.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <folly/Portability.h>
#include <folly/Traits.h>

#include <array>
#include <type_traits>

namespace folly::detail {

/**
 * UnrollUtils
 *
 * Unfortunately compilers often don't unroll the loops with small
 * fixed number of iterations and/or not unroll them properly.
 *
 * This is a collection of helpers that use templates to do some
 * common unrolled loops.
 */
struct UnrollUtils { … };

} // namespace folly::detail