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Xing Xue: port to IBM XLC++/AIX.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@188396 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2013-08-14 18:00:20 +00:00
parent 3e005bf6b2
commit 7f76450ee9
18 changed files with 605 additions and 47 deletions
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54
include/support/ibm/support.h Normal file
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// -*- 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 long long);
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