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57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
// -*- C++ -*-
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//===----------------------- support/ibm/support.h ----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_SUPPORT_IBM_SUPPORT_H
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#define _LIBCPP_SUPPORT_IBM_SUPPORT_H
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extern "builtin" int __popcnt4(unsigned int);
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extern "builtin" int __popcnt8(unsigned long long);
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extern "builtin" unsigned int __cnttz4(unsigned int);
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extern "builtin" unsigned int __cnttz8(unsigned long long);
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extern "builtin" unsigned int __cntlz4(unsigned int);
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extern "builtin" unsigned int __cntlz8(unsigned long long);
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// Builtin functions for counting population
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#define __builtin_popcount(x) __popcnt4(x)
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#define __builtin_popcountll(x) __popcnt8(x)
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#if defined(__64BIT__)
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#define __builtin_popcountl(x) __builtin_popcountll(x)
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#else
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#define __builtin_popcountl(x) __builtin_popcount(x)
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#endif
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// Builtin functions for counting trailing zeros
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#define __builtin_ctz(x) __cnttz4(x)
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#define __builtin_ctzll(x) __cnttz8(x)
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#if defined(__64BIT__)
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#define __builtin_ctzl(x) __builtin_ctzll(x)
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#else
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#define __builtin_ctzl(x) __builtin_ctz(x)
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#endif
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// Builtin functions for counting leading zeros
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#define __builtin_clz(x) __cntlz4(x)
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#define __builtin_clzll(x) __cntlz8(x)
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#if defined(__64BIT__)
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#define __builtin_clzl(x) __builtin_clzll(x)
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#else
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#define __builtin_clzl(x) __builtin_clz(x)
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#endif
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#if defined(__64BIT__)
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#define __SIZE_WIDTH__ 64
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#else
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#define __SIZE_WIDTH__ 32
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#endif
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#endif // _LIBCPP_SUPPORT_IBM_SUPPORT_H
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