forked from OSchip/llvm-project
101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*===---- crc32intrin.h - SSE4.2 Accumulate CRC32 intrinsics ---------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __CRC32INTRIN_H
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#define __CRC32INTRIN_H
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#define __DEFAULT_FN_ATTRS \
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__attribute__((__always_inline__, __nodebug__, __target__("crc32")))
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/// Adds the unsigned integer operand to the CRC-32C checksum of the
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/// unsigned char operand.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> CRC32B </c> instruction.
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///
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/// \param __C
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/// An unsigned integer operand to add to the CRC-32C checksum of operand
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/// \a __D.
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/// \param __D
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/// An unsigned 8-bit integer operand used to compute the CRC-32C checksum.
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/// \returns The result of adding operand \a __C to the CRC-32C checksum of
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/// operand \a __D.
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static __inline__ unsigned int __DEFAULT_FN_ATTRS
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_mm_crc32_u8(unsigned int __C, unsigned char __D)
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{
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return __builtin_ia32_crc32qi(__C, __D);
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}
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/// Adds the unsigned integer operand to the CRC-32C checksum of the
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/// unsigned short operand.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> CRC32W </c> instruction.
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///
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/// \param __C
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/// An unsigned integer operand to add to the CRC-32C checksum of operand
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/// \a __D.
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/// \param __D
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/// An unsigned 16-bit integer operand used to compute the CRC-32C checksum.
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/// \returns The result of adding operand \a __C to the CRC-32C checksum of
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/// operand \a __D.
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static __inline__ unsigned int __DEFAULT_FN_ATTRS
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_mm_crc32_u16(unsigned int __C, unsigned short __D)
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{
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return __builtin_ia32_crc32hi(__C, __D);
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}
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/// Adds the first unsigned integer operand to the CRC-32C checksum of
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/// the second unsigned integer operand.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> CRC32L </c> instruction.
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///
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/// \param __C
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/// An unsigned integer operand to add to the CRC-32C checksum of operand
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/// \a __D.
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/// \param __D
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/// An unsigned 32-bit integer operand used to compute the CRC-32C checksum.
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/// \returns The result of adding operand \a __C to the CRC-32C checksum of
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/// operand \a __D.
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static __inline__ unsigned int __DEFAULT_FN_ATTRS
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_mm_crc32_u32(unsigned int __C, unsigned int __D)
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{
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return __builtin_ia32_crc32si(__C, __D);
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}
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#ifdef __x86_64__
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/// Adds the unsigned integer operand to the CRC-32C checksum of the
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/// unsigned 64-bit integer operand.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> CRC32Q </c> instruction.
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///
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/// \param __C
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/// An unsigned integer operand to add to the CRC-32C checksum of operand
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/// \a __D.
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/// \param __D
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/// An unsigned 64-bit integer operand used to compute the CRC-32C checksum.
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/// \returns The result of adding operand \a __C to the CRC-32C checksum of
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/// operand \a __D.
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static __inline__ unsigned long long __DEFAULT_FN_ATTRS
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_mm_crc32_u64(unsigned long long __C, unsigned long long __D)
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{
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return __builtin_ia32_crc32di(__C, __D);
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}
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#endif /* __x86_64__ */
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#undef __DEFAULT_FN_ATTRS
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#endif /* __CRC32INTRIN_H */
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