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/*===---- popcntintrin.h - POPCNT intrinsics -------------------------------===
*
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
* See https://llvm.org/LICENSE.txt for license information.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*
*===-----------------------------------------------------------------------===
*/
#ifndef __POPCNTINTRIN_H
#define __POPCNTINTRIN_H
/* Define the default attributes for the functions in this file. */
#if defined(__cplusplus) && (__cplusplus >= 201103L)
#define __DEFAULT_FN_ATTRS \
__attribute__((__always_inline__, __nodebug__, \
__target__("popcnt"))) constexpr
#else
#define __DEFAULT_FN_ATTRS \
__attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
#endif
/// Counts the number of bits in the source operand having a value of 1.
///
/// \headerfile <x86intrin.h>
///
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
///
/// \param __A
/// An unsigned 32-bit integer operand.
/// \returns A 32-bit integer containing the number of bits with value 1 in the
/// source operand.
static __inline__ int __DEFAULT_FN_ATTRS
_mm_popcnt_u32(unsigned int __A)
{
return __builtin_popcount(__A);
}
#ifdef __x86_64__
/// Counts the number of bits in the source operand having a value of 1.
///
/// \headerfile <x86intrin.h>
///
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
///
/// \param __A
/// An unsigned 64-bit integer operand.
/// \returns A 64-bit integer containing the number of bits with value 1 in the
/// source operand.
static __inline__ long long __DEFAULT_FN_ATTRS
_mm_popcnt_u64(unsigned long long __A)
{
return __builtin_popcountll(__A);
}
#endif /* __x86_64__ */
#undef __DEFAULT_FN_ATTRS
#endif /* __POPCNTINTRIN_H */