llvm/compiler-rt/lib/builtins/popcountsi2.c

//===-- popcountsi2.c - Implement __popcountsi2 ---------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements __popcountsi2 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//

#include "int_lib.h"

// Returns: count of 1 bits

COMPILER_RT_ABI int __popcountsi2(si_int a) { … }