1/*
2 * Copyright 2013-present Facebook, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <folly/experimental/test/CodingTestUtils.h>
18
19#include <folly/portability/GFlags.h>
20#include <glog/logging.h>
21
22DEFINE_string(
23 coding_test_utils_instructions,
24 "",
25 "If non empty, forces the instruction set. Choices: Default, Nehalem, Haswell");
26
27namespace folly {
28namespace compression {
29
30folly::Optional<instructions::Type> instructionsOverride() {
31 if (FLAGS_coding_test_utils_instructions.empty()) {
32 return folly::none;
33 }
34
35 instructions::Type type;
36 if (FLAGS_coding_test_utils_instructions == "Default") {
37 type = instructions::Type::DEFAULT;
38 } else if (FLAGS_coding_test_utils_instructions == "Nehalem") {
39 type = instructions::Type::NEHALEM;
40 } else if (FLAGS_coding_test_utils_instructions == "Haswell") {
41 type = instructions::Type::HASWELL;
42 } else {
43 LOG(FATAL) << "Insupported instructions type "
44 << FLAGS_coding_test_utils_instructions;
45 }
46
47 instructions::dispatch(
48 type, [](auto instructions) { CHECK(instructions.supported()); });
49
50 return type;
51}
52
53} // namespace compression
54} // namespace folly
55