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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
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/* compare258_sse.c -- SSE4.2 version of compare258
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*
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* Copyright (C) 2013 Intel Corporation. All rights reserved.
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* Authors:
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* Wajdi Feghali <wajdi.k.feghali@intel.com>
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* Jim Guilford <james.guilford@intel.com>
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* Vinodh Gopal <vinodh.gopal@intel.com>
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* Erdinc Ozturk <erdinc.ozturk@intel.com>
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* Jim Kukunas <james.t.kukunas@linux.intel.com>
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*
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* Portions are Copyright (C) 2016 12Sided Technology, LLC.
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* Author:
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* Phil Vachon <pvachon@12sidedtech.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 "../../zutil.h"
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#ifdef X86_SSE42_CMP_STR
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#include <immintrin.h>
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#ifdef _MSC_VER
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# include <nmmintrin.h>
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#endif
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/* UNALIGNED_OK, SSE4.2 intrinsic comparison */
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static inline uint32_t compare256_unaligned_sse4_static(const unsigned char *src0, const unsigned char *src1) {
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uint32_t len = 0;
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do {
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#define mode _SIDD_UBYTE_OPS | _SIDD_CMP_EQUAL_EACH | _SIDD_NEGATIVE_POLARITY
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__m128i xmm_src0, xmm_src1;
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uint32_t ret;
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xmm_src0 = _mm_loadu_si128((__m128i *)src0);
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xmm_src1 = _mm_loadu_si128((__m128i *)src1);
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ret = (uint32_t)_mm_cmpestri(xmm_src0, 16, xmm_src1, 16, mode);
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if (_mm_cmpestrc(xmm_src0, 16, xmm_src1, 16, mode)) {
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return len + ret;
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}
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src0 += 16, src1 += 16, len += 16;
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xmm_src0 = _mm_loadu_si128((__m128i *)src0);
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xmm_src1 = _mm_loadu_si128((__m128i *)src1);
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ret = (uint32_t)_mm_cmpestri(xmm_src0, 16, xmm_src1, 16, mode);
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if (_mm_cmpestrc(xmm_src0, 16, xmm_src1, 16, mode)) {
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return len + ret;
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}
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src0 += 16, src1 += 16, len += 16;
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} while (len < 256);
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return 256;
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}
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static inline uint32_t compare258_unaligned_sse4_static(const unsigned char *src0, const unsigned char *src1) {
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if (*(uint16_t *)src0 != *(uint16_t *)src1)
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return (*src0 == *src1);
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return compare256_unaligned_sse4_static(src0+2, src1+2) + 2;
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}
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Z_INTERNAL uint32_t compare258_unaligned_sse4(const unsigned char *src0, const unsigned char *src1) {
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return compare258_unaligned_sse4_static(src0, src1);
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}
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#define LONGEST_MATCH longest_match_unaligned_sse4
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#define COMPARE256 compare256_unaligned_sse4_static
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#define COMPARE258 compare258_unaligned_sse4_static
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#include "match_tpl.h"
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#endif
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