diff options
Diffstat (limited to 'gnu/llvm/libcxx/include/support/ibm/support.h')
| -rw-r--r-- | gnu/llvm/libcxx/include/support/ibm/support.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gnu/llvm/libcxx/include/support/ibm/support.h b/gnu/llvm/libcxx/include/support/ibm/support.h new file mode 100644 index 00000000000..0569cbe7460 --- /dev/null +++ b/gnu/llvm/libcxx/include/support/ibm/support.h @@ -0,0 +1,53 @@ +// -*- C++ -*- +//===----------------------- support/ibm/support.h ----------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +#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 |