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#include "crc32c.hpp" | ||
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#define CRC32C_INTRIN SOUP_X86 | ||
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#if CRC32C_INTRIN | ||
#include <nmmintrin.h> | ||
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#include "CpuInfo.hpp" | ||
#endif | ||
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NAMESPACE_SOUP | ||
{ | ||
static uint32_t tab[] = { | ||
0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, 0xc79a971f, 0x35f1141c, | ||
0x26a1e7e8, 0xd4ca64eb, 0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, | ||
0x4d43cfd0, 0xbf284cd3, 0xac78bf27, 0x5e133c24, 0x105ec76f, 0xe235446c, | ||
0xf165b798, 0x030e349b, 0xd7c45070, 0x25afd373, 0x36ff2087, 0xc494a384, | ||
0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, 0x5d1d08bf, 0xaf768bbc, | ||
0xbc267848, 0x4e4dfb4b, 0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, | ||
0xe72719c1, 0x154c9ac2, 0x061c6936, 0xf477ea35, 0xaa64d611, 0x580f5512, | ||
0x4b5fa6e6, 0xb93425e5, 0x6dfe410e, 0x9f95c20d, 0x8cc531f9, 0x7eaeb2fa, | ||
0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, 0xf779deae, 0x05125dad, | ||
0x1642ae59, 0xe4292d5a, 0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, | ||
0x7da08661, 0x8fcb0562, 0x9c9bf696, 0x6ef07595, 0x417b1dbc, 0xb3109ebf, | ||
0xa0406d4b, 0x522bee48, 0x86e18aa3, 0x748a09a0, 0x67dafa54, 0x95b17957, | ||
0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, 0x0c38d26c, 0xfe53516f, | ||
0xed03a29b, 0x1f682198, 0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, | ||
0x96bf4dcc, 0x64d4cecf, 0x77843d3b, 0x85efbe38, 0xdbfc821c, 0x2997011f, | ||
0x3ac7f2eb, 0xc8ac71e8, 0x1c661503, 0xee0d9600, 0xfd5d65f4, 0x0f36e6f7, | ||
0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, 0xa65c047d, 0x5437877e, | ||
0x4767748a, 0xb50cf789, 0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, | ||
0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45, 0x3fd5af46, 0x7198540d, 0x83f3d70e, | ||
0x90a324fa, 0x62c8a7f9, 0xb602c312, 0x44694011, 0x5739b3e5, 0xa55230e6, | ||
0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, 0x3cdb9bdd, 0xceb018de, | ||
0xdde0eb2a, 0x2f8b6829, 0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, | ||
0x456cac67, 0xb7072f64, 0xa457dc90, 0x563c5f93, 0x082f63b7, 0xfa44e0b4, | ||
0xe9141340, 0x1b7f9043, 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f, 0xdce5075c, | ||
0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, 0x55326b08, 0xa759e80b, | ||
0xb4091bff, 0x466298fc, 0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, | ||
0xdfeb33c7, 0x2d80b0c4, 0x3ed04330, 0xccbbc033, 0xa24bb5a6, 0x502036a5, | ||
0x4370c551, 0xb11b4652, 0x65d122b9, 0x97baa1ba, 0x84ea524e, 0x7681d14d, | ||
0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, 0xef087a76, 0x1d63f975, | ||
0x0e330a81, 0xfc588982, 0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, | ||
0x758fe5d6, 0x87e466d5, 0x94b49521, 0x66df1622, 0x38cc2a06, 0xcaa7a905, | ||
0xd9f75af1, 0x2b9cd9f2, 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee, 0xec064eed, | ||
0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, 0x0417b1db, 0xf67c32d8, | ||
0xe52cc12c, 0x1747422f, 0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, | ||
0x8ecee914, 0x7ca56a17, 0x6ff599e3, 0x9d9e1ae0, 0xd3d3e1ab, 0x21b862a8, | ||
0x32e8915c, 0xc083125f, 0x144976b4, 0xe622f5b7, 0xf5720643, 0x07198540, | ||
0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, 0x9e902e7b, 0x6cfbad78, | ||
0x7fab5e8c, 0x8dc0dd8f, 0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, | ||
0x24aa3f05, 0xd6c1bc06, 0xc5914ff2, 0x37faccf1, 0x69e9f0d5, 0x9b8273d6, | ||
0x88d28022, 0x7ab90321, 0xae7367ca, 0x5c18e4c9, 0x4f48173d, 0xbd23943e, | ||
0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, 0x34f4f86a, 0xc69f7b69, | ||
0xd5cf889d, 0x27a40b9e, 0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, | ||
0xbe2da0a5, 0x4c4623a6, 0x5f16d052, 0xad7d5351 | ||
}; | ||
#define STEP1(octet, crc) (tab[((crc) ^ (octet)) & 0xff] ^ ((crc) >> 8)) | ||
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#if CRC32C_INTRIN | ||
#if defined(__GNUC__) || defined(__clang__) | ||
__attribute__((target("sse4.2"))) | ||
#endif | ||
#endif | ||
uint32_t crc32c::hash(const uint8_t* data, size_t size, uint32_t initial) noexcept | ||
{ | ||
uint32_t i = ~initial; | ||
#if CRC32C_INTRIN | ||
if (CpuInfo::get().supportsSSE4_2()) | ||
{ | ||
#if SOUP_BITS >= 64 | ||
while (size >= 8) | ||
{ | ||
i = (uint32_t)_mm_crc32_u64(i, *reinterpret_cast<const uint64_t*>(data)); | ||
data += 8; | ||
size -= 8; | ||
} | ||
#else | ||
while (size >= 4) | ||
{ | ||
i = _mm_crc32_u32(i, *reinterpret_cast<const uint32_t*>(data)); | ||
data += 4; | ||
size -= 4; | ||
} | ||
#endif | ||
while (size > 0) | ||
{ | ||
i = _mm_crc32_u8(i, *data); | ||
data += 1; | ||
size -= 1; | ||
} | ||
} | ||
else | ||
#endif | ||
{ | ||
for (; size; --size, ++data) | ||
{ | ||
i = STEP1(*data, i); | ||
} | ||
} | ||
return ~i; | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
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#pragma once | ||
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#include "base.hpp" | ||
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#include <cstdint> | ||
#include <cstddef> | ||
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NAMESPACE_SOUP | ||
{ | ||
struct crc32c | ||
{ | ||
[[nodiscard]] static uint32_t hash(const uint8_t* data, size_t size, uint32_t initial = 0) noexcept; | ||
}; | ||
} |
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