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2957f5084d
* Update zlibng * Set cmake path more directly in zlibng to hopefully fix an issue with the build on drone * I'm dumb, missing / in path * Mackal helps with a dumb gitignore issue * Adding all the files, not sure what's ignoring them and im tired of looking * Some tweaks to zlibng build to hopefully get it to build properly. works on msvc now
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* SSE optimized hash slide
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*
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* Copyright (C) 2017 Intel Corporation
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* Authors:
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* Arjan van de Ven <arjan@linux.intel.com>
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* Jim Kukunas <james.t.kukunas@linux.intel.com>
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*
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#include "../../zbuild.h"
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#include "../../deflate.h"
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#include <immintrin.h>
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Z_INTERNAL void slide_hash_sse2(deflate_state *s) {
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Pos *p;
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unsigned n;
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uint16_t wsize = (uint16_t)s->w_size;
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const __m128i xmm_wsize = _mm_set1_epi16((short)wsize);
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n = HASH_SIZE;
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p = &s->head[n] - 8;
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do {
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__m128i value, result;
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value = _mm_loadu_si128((__m128i *)p);
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result= _mm_subs_epu16(value, xmm_wsize);
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_mm_storeu_si128((__m128i *)p, result);
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p -= 8;
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n -= 8;
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} while (n > 0);
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n = wsize;
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p = &s->prev[n] - 8;
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do {
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__m128i value, result;
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value = _mm_loadu_si128((__m128i *)p);
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result= _mm_subs_epu16(value, xmm_wsize);
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_mm_storeu_si128((__m128i *)p, result);
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p -= 8;
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n -= 8;
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} while (n > 0);
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}
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