| // -*- C++ -*- |
| //===----------------------- support/ibm/support.h ----------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_SUPPORT_IBM_SUPPORT_H |
| #define _LIBCPP_SUPPORT_IBM_SUPPORT_H |
| |
| extern "builtin" int __popcnt4(unsigned int); |
| extern "builtin" int __popcnt8(unsigned long long); |
| extern "builtin" unsigned int __cnttz4(unsigned int); |
| extern "builtin" unsigned int __cnttz8(unsigned long long); |
| extern "builtin" unsigned int __cntlz4(unsigned int); |
| extern "builtin" unsigned int __cntlz8(unsigned long long); |
| |
| // Builtin functions for counting population |
| #define __builtin_popcount(x) __popcnt4(x) |
| #define __builtin_popcountll(x) __popcnt8(x) |
| #if defined(__64BIT__) |
| #define __builtin_popcountl(x) __builtin_popcountll(x) |
| #else |
| #define __builtin_popcountl(x) __builtin_popcount(x) |
| #endif |
| |
| // Builtin functions for counting trailing zeros |
| #define __builtin_ctz(x) __cnttz4(x) |
| #define __builtin_ctzll(x) __cnttz8(x) |
| #if defined(__64BIT__) |
| #define __builtin_ctzl(x) __builtin_ctzll(x) |
| #else |
| #define __builtin_ctzl(x) __builtin_ctz(x) |
| #endif |
| |
| // Builtin functions for counting leading zeros |
| #define __builtin_clz(x) __cntlz4(x) |
| #define __builtin_clzll(x) __cntlz8(x) |
| #if defined(__64BIT__) |
| #define __builtin_clzl(x) __builtin_clzll(x) |
| #else |
| #define __builtin_clzl(x) __builtin_clz(x) |
| #endif |
| |
| #if defined(__64BIT__) |
| #define __SIZE_WIDTH__ 64 |
| #else |
| #define __SIZE_WIDTH__ 32 |
| #endif |
| |
| #endif // _LIBCPP_SUPPORT_IBM_SUPPORT_H |
