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28 lines
616 B
28 lines
616 B
/*
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* Copyright (c) 2018 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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int unroll_loop(int n) {
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int ret = 0;
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int loop = n + 3 / 4;
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switch (n % 8) {
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case 0:
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do {
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ret++;
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case 3:
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ret++;
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if (1) {
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case 2:
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ret++;
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}
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case 1:
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ret++;
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} while (--loop > 0);
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}
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return ret;
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}
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