1 // -*- C++ -*- 2 //===-----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP_SUPPORT_IBM_SUPPORT_H 11 #define _LIBCPP_SUPPORT_IBM_SUPPORT_H 12 13 extern "builtin" int __popcnt4(unsigned int); 14 extern "builtin" int __popcnt8(unsigned long long); 15 extern "builtin" unsigned int __cnttz4(unsigned int); 16 extern "builtin" unsigned int __cnttz8(unsigned long long); 17 extern "builtin" unsigned int __cntlz4(unsigned int); 18 extern "builtin" unsigned int __cntlz8(unsigned long long); 19 20 // Builtin functions for counting population 21 #define __builtin_popcount(x) __popcnt4(x) 22 #define __builtin_popcountll(x) __popcnt8(x) 23 #if defined(__64BIT__) 24 #define __builtin_popcountl(x) __builtin_popcountll(x) 25 #else 26 #define __builtin_popcountl(x) __builtin_popcount(x) 27 #endif 28 29 // Builtin functions for counting trailing zeros 30 #define __builtin_ctz(x) __cnttz4(x) 31 #define __builtin_ctzll(x) __cnttz8(x) 32 #if defined(__64BIT__) 33 #define __builtin_ctzl(x) __builtin_ctzll(x) 34 #else 35 #define __builtin_ctzl(x) __builtin_ctz(x) 36 #endif 37 38 // Builtin functions for counting leading zeros 39 #define __builtin_clz(x) __cntlz4(x) 40 #define __builtin_clzll(x) __cntlz8(x) 41 #if defined(__64BIT__) 42 #define __builtin_clzl(x) __builtin_clzll(x) 43 #else 44 #define __builtin_clzl(x) __builtin_clz(x) 45 #endif 46 47 #if defined(__64BIT__) 48 #define __SIZE_WIDTH__ 64 49 #else 50 #define __SIZE_WIDTH__ 32 51 #endif 52 53 #endif // _LIBCPP_SUPPORT_IBM_SUPPORT_H 54