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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.
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/*===----------------------- clzerointrin.h - CLZERO ----------------------===
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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 __X86INTRIN_H
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#error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead."
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#endif
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#ifndef __CLZEROINTRIN_H
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#define __CLZEROINTRIN_H
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/* Define the default attributes for the functions in this file. */
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#define __DEFAULT_FN_ATTRS \
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__attribute__((__always_inline__, __nodebug__, __target__("clzero")))
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/// Zeroes out the cache line for the address \a __line. This uses a
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/// non-temporal store. Calling \c _mm_sfence() afterward might be needed
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/// to enforce ordering.
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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 CLZERO instruction.
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///
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/// \param __line
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/// An address within the cache line to zero out.
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static __inline__ void __DEFAULT_FN_ATTRS
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_mm_clzero (void * __line)
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{
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__builtin_ia32_clzero ((void *)__line);
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}
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#undef __DEFAULT_FN_ATTRS
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#endif /* __CLZEROINTRIN_H */
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