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.
 30static __inline__ unsigned int __DEFAULT_FN_ATTRS
 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.
 50static __inline__ unsigned int __DEFAULT_FN_ATTRS
 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.
 70static __inline__ unsigned int __DEFAULT_FN_ATTRS
 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.
 91static __inline__ unsigned long long __DEFAULT_FN_ATTRS
 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 */