blob: da85de32266ff507b912dff1e7d326eed917fcad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// Copyright 2022 Google LLC
// SPDX-License-Identifier: Apache-2.0
//
// 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.
#ifndef HIGHWAY_HWY_PER_TARGET_H_
#define HIGHWAY_HWY_PER_TARGET_H_
#include <stddef.h>
// Per-target functions.
namespace hwy {
// Returns size in bytes of a vector, i.e. `Lanes(ScalableTag<uint8_t>())`.
//
// Do not cache the result, which may change after calling DisableTargets, or
// if software requests a different vector size (e.g. when entering/exiting SME
// streaming mode). Instead call this right before the code that depends on the
// result, without any DisableTargets or SME transition in-between. Note that
// this involves an indirect call, so prefer not to call this frequently nor
// unnecessarily.
size_t VectorBytes();
} // namespace hwy
#endif // HIGHWAY_HWY_PER_TARGET_H_
|
