1/*===---- popcntintrin.h - POPCNT 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 __POPCNTINTRIN_H
11#define __POPCNTINTRIN_H
12
13/* Define the default attributes for the functions in this file. */
14#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
15
16/// Counts the number of bits in the source operand having a value of 1.
17///
18/// \headerfile <x86intrin.h>
19///
20/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
21///
22/// \param __A
23///    An unsigned 32-bit integer operand.
24/// \returns A 32-bit integer containing the number of bits with value 1 in the
25///    source operand.
26static __inline__ int __DEFAULT_FN_ATTRS
27_mm_popcnt_u32(unsigned int __A)
28{
29  return __builtin_popcount(__A);
30}
31
32#ifdef __x86_64__
33/// Counts the number of bits in the source operand having a value of 1.
34///
35/// \headerfile <x86intrin.h>
36///
37/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
38///
39/// \param __A
40///    An unsigned 64-bit integer operand.
41/// \returns A 64-bit integer containing the number of bits with value 1 in the
42///    source operand.
43static __inline__ long long __DEFAULT_FN_ATTRS
44_mm_popcnt_u64(unsigned long long __A)
45{
46  return __builtin_popcountll(__A);
47}
48#endif /* __x86_64__ */
49
50#undef __DEFAULT_FN_ATTRS
51
52#endif /* __POPCNTINTRIN_H */
53