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14 | pmbaty | 1 | /*===---- crc32intrin.h - SSE4.2 Accumulate CRC32 intrinsics ---------------=== |
2 | * |
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3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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4 | * See https://llvm.org/LICENSE.txt for license information. |
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5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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6 | * |
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7 | *===-----------------------------------------------------------------------=== |
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8 | */ |
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9 | |||
10 | #ifndef __CRC32INTRIN_H |
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11 | #define __CRC32INTRIN_H |
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12 | |||
13 | #define __DEFAULT_FN_ATTRS \ |
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14 | __attribute__((__always_inline__, __nodebug__, __target__("crc32"))) |
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15 | |||
16 | /// Adds the unsigned integer operand to the CRC-32C checksum of the |
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17 | /// unsigned char operand. |
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18 | /// |
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19 | /// \headerfile <x86intrin.h> |
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20 | /// |
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21 | /// This intrinsic corresponds to the <c> CRC32B </c> instruction. |
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22 | /// |
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23 | /// \param __C |
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24 | /// An unsigned integer operand to add to the CRC-32C checksum of operand |
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25 | /// \a __D. |
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26 | /// \param __D |
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27 | /// An unsigned 8-bit integer operand used to compute the CRC-32C checksum. |
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28 | /// \returns The result of adding operand \a __C to the CRC-32C checksum of |
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29 | /// operand \a __D. |
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30 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
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31 | _mm_crc32_u8(unsigned int __C, unsigned char __D) |
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32 | { |
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33 | return __builtin_ia32_crc32qi(__C, __D); |
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34 | } |
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35 | |||
36 | /// Adds the unsigned integer operand to the CRC-32C checksum of the |
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37 | /// unsigned short operand. |
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38 | /// |
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39 | /// \headerfile <x86intrin.h> |
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40 | /// |
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41 | /// This intrinsic corresponds to the <c> CRC32W </c> instruction. |
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42 | /// |
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43 | /// \param __C |
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44 | /// An unsigned integer operand to add to the CRC-32C checksum of operand |
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45 | /// \a __D. |
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46 | /// \param __D |
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47 | /// An unsigned 16-bit integer operand used to compute the CRC-32C checksum. |
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48 | /// \returns The result of adding operand \a __C to the CRC-32C checksum of |
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49 | /// operand \a __D. |
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50 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
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51 | _mm_crc32_u16(unsigned int __C, unsigned short __D) |
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52 | { |
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53 | return __builtin_ia32_crc32hi(__C, __D); |
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54 | } |
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55 | |||
56 | /// Adds the first unsigned integer operand to the CRC-32C checksum of |
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57 | /// the second unsigned integer operand. |
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58 | /// |
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59 | /// \headerfile <x86intrin.h> |
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60 | /// |
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61 | /// This intrinsic corresponds to the <c> CRC32L </c> instruction. |
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62 | /// |
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63 | /// \param __C |
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64 | /// An unsigned integer operand to add to the CRC-32C checksum of operand |
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65 | /// \a __D. |
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66 | /// \param __D |
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67 | /// An unsigned 32-bit integer operand used to compute the CRC-32C checksum. |
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68 | /// \returns The result of adding operand \a __C to the CRC-32C checksum of |
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69 | /// operand \a __D. |
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70 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
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71 | _mm_crc32_u32(unsigned int __C, unsigned int __D) |
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72 | { |
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73 | return __builtin_ia32_crc32si(__C, __D); |
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74 | } |
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75 | |||
76 | #ifdef __x86_64__ |
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77 | /// Adds the unsigned integer operand to the CRC-32C checksum of the |
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78 | /// unsigned 64-bit integer operand. |
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79 | /// |
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80 | /// \headerfile <x86intrin.h> |
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81 | /// |
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82 | /// This intrinsic corresponds to the <c> CRC32Q </c> instruction. |
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83 | /// |
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84 | /// \param __C |
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85 | /// An unsigned integer operand to add to the CRC-32C checksum of operand |
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86 | /// \a __D. |
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87 | /// \param __D |
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88 | /// An unsigned 64-bit integer operand used to compute the CRC-32C checksum. |
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89 | /// \returns The result of adding operand \a __C to the CRC-32C checksum of |
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90 | /// operand \a __D. |
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91 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
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92 | _mm_crc32_u64(unsigned long long __C, unsigned long long __D) |
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93 | { |
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94 | return __builtin_ia32_crc32di(__C, __D); |
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95 | } |
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96 | #endif /* __x86_64__ */ |
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97 | |||
98 | #undef __DEFAULT_FN_ATTRS |
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99 | |||
100 | #endif /* __CRC32INTRIN_H */ |