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https://github.com/jart/cosmopolitan.git
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c9152b6f14
This change switches c++ exception handling from sjlj to standard dwarf. It's needed because clang for aarch64 doesn't support sjlj. It turns out that libunwind had a bare-metal configuration that made this easy to do. This change gets the new experimental cosmocc -mclang flag in a state of working so well that it can now be used to build all of llamafile and it goes 3x faster in terms of build latency, without trading away any perf. The int_fast16_t and int_fast32_t types are now always defined as 32-bit in the interest of having more abi consistency between cosmocc -mgcc and -mclang mode.
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*===---- popcntintrin.h - POPCNT intrinsics -------------------------------===
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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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*/
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#ifndef __POPCNTINTRIN_H
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#define __POPCNTINTRIN_H
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/* Define the default attributes for the functions in this file. */
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#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
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#if defined(__cplusplus) && (__cplusplus >= 201103L)
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#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS constexpr
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#else
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#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS
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#endif
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/// Counts the number of bits in the source operand having a value of 1.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
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///
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/// \param __A
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/// An unsigned 32-bit integer operand.
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/// \returns A 32-bit integer containing the number of bits with value 1 in the
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/// source operand.
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static __inline__ int __DEFAULT_FN_ATTRS_CONSTEXPR
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_mm_popcnt_u32(unsigned int __A)
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{
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return __builtin_popcount(__A);
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}
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#ifdef __x86_64__
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/// Counts the number of bits in the source operand having a value of 1.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
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///
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/// \param __A
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/// An unsigned 64-bit integer operand.
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/// \returns A 64-bit integer containing the number of bits with value 1 in the
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/// source operand.
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static __inline__ long long __DEFAULT_FN_ATTRS_CONSTEXPR
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_mm_popcnt_u64(unsigned long long __A)
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{
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return __builtin_popcountll(__A);
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}
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#endif /* __x86_64__ */
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#undef __DEFAULT_FN_ATTRS
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#undef __DEFAULT_FN_ATTRS_CONSTEXPR
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#endif /* __POPCNTINTRIN_H */
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