1 /*===---- crc32intrin.h - SSE4.2 Accumulate CRC32 intrinsics ---------------===
2 *
3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 * See https://llvm.org/LICENSE.txt for license information.
5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 *
7 *===-----------------------------------------------------------------------===
8 */
9
10 #ifndef __CRC32INTRIN_H
11 #define __CRC32INTRIN_H
12
13 #define __DEFAULT_FN_ATTRS \
14 __attribute__((__always_inline__, __nodebug__, __target__("crc32")))
15
16 /// Adds the unsigned integer operand to the CRC-32C checksum of the
17 /// unsigned char operand.
18 ///
19 /// \headerfile <x86intrin.h>
20 ///
21 /// This intrinsic corresponds to the <c> CRC32B </c> instruction.
22 ///
23 /// \param __C
24 /// An unsigned integer operand to add to the CRC-32C checksum of operand
25 /// \a __D.
26 /// \param __D
27 /// An unsigned 8-bit integer operand used to compute the CRC-32C checksum.
28 /// \returns The result of adding operand \a __C to the CRC-32C checksum of
29 /// operand \a __D.
30 static __inline__ unsigned int __DEFAULT_FN_ATTRS
_mm_crc32_u8(unsigned int __C,unsigned char __D)31 _mm_crc32_u8(unsigned int __C, unsigned char __D)
32 {
33 return __builtin_ia32_crc32qi(__C, __D);
34 }
35
36 /// Adds the unsigned integer operand to the CRC-32C checksum of the
37 /// unsigned short operand.
38 ///
39 /// \headerfile <x86intrin.h>
40 ///
41 /// This intrinsic corresponds to the <c> CRC32W </c> instruction.
42 ///
43 /// \param __C
44 /// An unsigned integer operand to add to the CRC-32C checksum of operand
45 /// \a __D.
46 /// \param __D
47 /// An unsigned 16-bit integer operand used to compute the CRC-32C checksum.
48 /// \returns The result of adding operand \a __C to the CRC-32C checksum of
49 /// operand \a __D.
50 static __inline__ unsigned int __DEFAULT_FN_ATTRS
_mm_crc32_u16(unsigned int __C,unsigned short __D)51 _mm_crc32_u16(unsigned int __C, unsigned short __D)
52 {
53 return __builtin_ia32_crc32hi(__C, __D);
54 }
55
56 /// Adds the first unsigned integer operand to the CRC-32C checksum of
57 /// the second unsigned integer operand.
58 ///
59 /// \headerfile <x86intrin.h>
60 ///
61 /// This intrinsic corresponds to the <c> CRC32L </c> instruction.
62 ///
63 /// \param __C
64 /// An unsigned integer operand to add to the CRC-32C checksum of operand
65 /// \a __D.
66 /// \param __D
67 /// An unsigned 32-bit integer operand used to compute the CRC-32C checksum.
68 /// \returns The result of adding operand \a __C to the CRC-32C checksum of
69 /// operand \a __D.
70 static __inline__ unsigned int __DEFAULT_FN_ATTRS
_mm_crc32_u32(unsigned int __C,unsigned int __D)71 _mm_crc32_u32(unsigned int __C, unsigned int __D)
72 {
73 return __builtin_ia32_crc32si(__C, __D);
74 }
75
76 #ifdef __x86_64__
77 /// Adds the unsigned integer operand to the CRC-32C checksum of the
78 /// unsigned 64-bit integer operand.
79 ///
80 /// \headerfile <x86intrin.h>
81 ///
82 /// This intrinsic corresponds to the <c> CRC32Q </c> instruction.
83 ///
84 /// \param __C
85 /// An unsigned integer operand to add to the CRC-32C checksum of operand
86 /// \a __D.
87 /// \param __D
88 /// An unsigned 64-bit integer operand used to compute the CRC-32C checksum.
89 /// \returns The result of adding operand \a __C to the CRC-32C checksum of
90 /// operand \a __D.
91 static __inline__ unsigned long long __DEFAULT_FN_ATTRS
_mm_crc32_u64(unsigned long long __C,unsigned long long __D)92 _mm_crc32_u64(unsigned long long __C, unsigned long long __D)
93 {
94 return __builtin_ia32_crc32di(__C, __D);
95 }
96 #endif /* __x86_64__ */
97
98 #undef __DEFAULT_FN_ATTRS
99
100 #endif /* __CRC32INTRIN_H */
101