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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.
61 lines
2 KiB
C
61 lines
2 KiB
C
/*===---- prfchiintrin.h - PREFETCHI intrinsic -----------------------------===
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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 __PRFCHIINTRIN_H
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#define __PRFCHIINTRIN_H
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#ifdef __x86_64__
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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__("prefetchi")))
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/// Loads an instruction sequence containing the specified memory address into
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/// all level cache.
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///
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/// Note that the effect of this intrinsic is dependent on the processor
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/// implementation.
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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 PREFETCHIT0 instruction.
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///
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/// \param __P
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/// A pointer specifying the memory address to be prefetched.
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static __inline__ void __DEFAULT_FN_ATTRS
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_m_prefetchit0(volatile const void *__P) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcast-qual"
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__builtin_ia32_prefetchi((const void *)__P, 3 /* _MM_HINT_T0 */);
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#pragma clang diagnostic pop
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}
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/// Loads an instruction sequence containing the specified memory address into
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/// all but the first-level cache.
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///
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/// Note that the effect of this intrinsic is dependent on the processor
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/// implementation.
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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 PREFETCHIT1 instruction.
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///
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/// \param __P
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/// A pointer specifying the memory address to be prefetched.
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static __inline__ void __DEFAULT_FN_ATTRS
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_m_prefetchit1(volatile const void *__P) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcast-qual"
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__builtin_ia32_prefetchi((const void *)__P, 2 /* _MM_HINT_T1 */);
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#pragma clang diagnostic pop
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}
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#endif /* __x86_64__ */
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#undef __DEFAULT_FN_ATTRS
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#endif /* __PRFCHWINTRIN_H */
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