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| author |   patrick <patrick@openbsd.org> | 2016-09-03 18:39:32 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2016-09-03 18:39:32 +0000 |
| commit | fe1ccca2776129541f1c4f645e4d1de89a22a031 (patch) | |
| tree | 8e4fd7a09a5a15a9498fd2d88dcddbd40e999c79 /lib/libcxx/include/support/ibm/support.h | |
| parent | Fixed missing null check in switchctl.c (diff) | |
| download | wireguard-openbsd-fe1ccca2776129541f1c4f645e4d1de89a22a031.tar.xz wireguard-openbsd-fe1ccca2776129541f1c4f645e4d1de89a22a031.zip | |
Import libc++ 3.9.0
Diffstat (limited to 'lib/libcxx/include/support/ibm/support.h')
| -rw-r--r-- | lib/libcxx/include/support/ibm/support.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/lib/libcxx/include/support/ibm/support.h b/lib/libcxx/include/support/ibm/support.h new file mode 100644 index 00000000000..0abfa7f95a6 --- /dev/null +++ b/lib/libcxx/include/support/ibm/support.h @@ -0,0 +1,54 @@ +// -*- 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 |