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https://github.com/PSI-Rockin/DobieStation.git
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94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*
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* arm/matchfinder_impl.h - ARM implementations of matchfinder functions
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*
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* Copyright 2016 Eric Biggers
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifdef __ARM_NEON
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# if MATCHFINDER_ALIGNMENT < 16
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# undef MATCHFINDER_ALIGNMENT
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# define MATCHFINDER_ALIGNMENT 16
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# endif
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# include <arm_neon.h>
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static forceinline bool
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matchfinder_init_neon(mf_pos_t *data, size_t size)
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{
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int16x8_t v, *p;
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size_t n;
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if (size % (sizeof(int16x8_t) * 4) != 0)
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return false;
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STATIC_ASSERT(sizeof(mf_pos_t) == 2);
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v = (int16x8_t) {
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MATCHFINDER_INITVAL, MATCHFINDER_INITVAL, MATCHFINDER_INITVAL,
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MATCHFINDER_INITVAL, MATCHFINDER_INITVAL, MATCHFINDER_INITVAL,
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MATCHFINDER_INITVAL, MATCHFINDER_INITVAL,
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};
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p = (int16x8_t *)data;
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n = size / (sizeof(int16x8_t) * 4);
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do {
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p[0] = v;
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p[1] = v;
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p[2] = v;
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p[3] = v;
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p += 4;
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} while (--n);
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return true;
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}
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#undef arch_matchfinder_init
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#define arch_matchfinder_init matchfinder_init_neon
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static forceinline bool
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matchfinder_rebase_neon(mf_pos_t *data, size_t size)
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{
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int16x8_t v, *p;
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size_t n;
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if (size % (sizeof(int16x8_t) * 4) != 0)
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return false;
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STATIC_ASSERT(sizeof(mf_pos_t) == 2);
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v = (int16x8_t) {
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(u16)-MATCHFINDER_WINDOW_SIZE, (u16)-MATCHFINDER_WINDOW_SIZE,
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(u16)-MATCHFINDER_WINDOW_SIZE, (u16)-MATCHFINDER_WINDOW_SIZE,
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(u16)-MATCHFINDER_WINDOW_SIZE, (u16)-MATCHFINDER_WINDOW_SIZE,
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(u16)-MATCHFINDER_WINDOW_SIZE, (u16)-MATCHFINDER_WINDOW_SIZE,
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};
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p = (int16x8_t *)data;
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n = size / (sizeof(int16x8_t) * 4);
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do {
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p[0] = vqaddq_s16(p[0], v);
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p[1] = vqaddq_s16(p[1], v);
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p[2] = vqaddq_s16(p[2], v);
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p[3] = vqaddq_s16(p[3], v);
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p += 4;
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} while (--n);
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return true;
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}
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#undef arch_matchfinder_rebase
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#define arch_matchfinder_rebase matchfinder_rebase_neon
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#endif /* __ARM_NEON */
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