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cc1732bc42
- Perform some housekeeping on scalar math function code - Import ARM's Optimized Routines for SIMD string processing - Upgrade to latest Chromium zlib and enable more SIMD optimizations
57 lines
2 KiB
C
Executable file
57 lines
2 KiB
C
Executable file
#ifndef COSMOPOLITAN_THIRD_PARTY_ZLIB_CRC32_SIMD_INTERNAL_H_
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#define COSMOPOLITAN_THIRD_PARTY_ZLIB_CRC32_SIMD_INTERNAL_H_
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#include "third_party/zlib/deflate.internal.h"
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#include "third_party/zlib/zconf.h"
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#include "third_party/zlib/zutil.internal.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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// clang-format off
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/*
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* crc32_sse42_simd_(): compute the crc32 of the buffer, where the buffer
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* length must be at least 64, and a multiple of 16.
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*/
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uint32_t ZLIB_INTERNAL crc32_sse42_simd_(const unsigned char* buf,
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z_size_t len,
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uint32_t crc);
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uint32_t ZLIB_INTERNAL crc32_avx512_simd_(const unsigned char* buf,
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z_size_t len,
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uint32_t crc);
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/*
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* crc32_sse42_simd_ buffer size constraints: see the use in zlib/crc32.c
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* for computing the crc32 of an arbitrary length buffer.
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*/
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#define Z_CRC32_SSE42_MINIMUM_LENGTH 64
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#define Z_CRC32_SSE42_CHUNKSIZE_MASK 15
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#define Z_CRC32_AVX512_MINIMUM_LENGTH 256
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#define Z_CRC32_AVX512_CHUNKSIZE_MASK 63
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/*
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* CRC32 checksums using ARMv8-a crypto instructions.
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*/
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uint32_t ZLIB_INTERNAL armv8_crc32_little(const unsigned char* buf,
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z_size_t len,
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uint32_t crc);
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/* aarch64 specific code. */
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#if defined(__aarch64__)
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/* 128 is the sweet spot at the time of coding (late 2020). */
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#define Z_CRC32_PMULL_MINIMUM_LENGTH 128
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#define Z_CRC32_PMULL_CHUNKSIZE_MASK 15
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/*
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* CRC32 checksums using ARMv8-a PMULL instructions, where the buffer
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* length must be at least 64, and a multiple of 16.
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*/
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uint32_t ZLIB_INTERNAL armv8_crc32_pmull_little(const unsigned char* buf,
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z_size_t len,
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uint32_t crc);
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#endif
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_THIRD_PARTY_ZLIB_CRC32_SIMD_INTERNAL_H_ */
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