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Open Source Computer Vision Library https://opencv.org/
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opencv/3rdparty/zlib-ng/arch/x86/crc32_vpclmulqdq.c

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Add zlib-ng as an alternative zlib implementation Zlib-ng is zlib replacement with optimizations for "next generation" systems. Its optimization may benifits image library decode and encode speed such as libpng. In our tests, if using zlib-ng and libpng combination on a x86_64 machine with AVX2, the time of `imdecode` amd `imencode` will drop 20% approximately. This patch enables zlib-ng's optimization if `CV_DISABLE_OPTIMIZATION` is OFF. Since Zlib-ng can dispatch intrinsics on the fly, port work is much easier. Related discussion: https://github.com/opencv/opencv/issues/22573
1 year ago
/* crc32_vpclmulqdq.c -- VPCMULQDQ-based CRC32 folding implementation.
* Copyright Wangyang Guo (wangyang.guo@intel.com)
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#if defined(X86_PCLMULQDQ_CRC) && defined(X86_VPCLMULQDQ_CRC)
#define X86_VPCLMULQDQ
#define CRC32_FOLD_COPY crc32_fold_vpclmulqdq_copy
#define CRC32_FOLD crc32_fold_vpclmulqdq
#define CRC32_FOLD_RESET crc32_fold_vpclmulqdq_reset
#define CRC32_FOLD_FINAL crc32_fold_vpclmulqdq_final
#define CRC32 crc32_vpclmulqdq
#include "crc32_pclmulqdq_tpl.h"
#endif