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From: Matthias Kretz <mkretz@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-6298] libstdc++: Simplify three helper functions into one Date: Thu, 23 Feb 2023 14:03:57 +0000 (GMT) [thread overview] Message-ID: <20230223140357.4692B3858C5E@sourceware.org> (raw) https://gcc.gnu.org/g:2e29e2fbeb8936e5c85cefaf547cba42e17e137b commit r13-6298-g2e29e2fbeb8936e5c85cefaf547cba42e17e137b Author: Matthias Kretz <m.kretz@gsi.de> Date: Sat Jan 14 23:32:38 2023 +0100 libstdc++: Simplify three helper functions into one Broadcast is a very common function. This should reduce compile-time effort. Signed-off-by: Matthias Kretz <m.kretz@gsi.de> libstdc++-v3/ChangeLog: PR libstdc++/108030 * include/experimental/bits/simd.h (__vector_broadcast): Implement via __vector_broadcast_impl instead of __call_with_n_evaluations + 2 lambdas. (__vector_broadcast_impl): New. Diff: --- libstdc++-v3/include/experimental/bits/simd.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/libstdc++-v3/include/experimental/bits/simd.h b/libstdc++-v3/include/experimental/bits/simd.h index 2f615d13b73..7482d109291 100644 --- a/libstdc++-v3/include/experimental/bits/simd.h +++ b/libstdc++-v3/include/experimental/bits/simd.h @@ -1798,15 +1798,15 @@ template <typename _Tp, typename... _Args> // }}} // __vector_broadcast{{{ +template <size_t _Np, typename _Tp, size_t... _I> + _GLIBCXX_SIMD_INTRINSIC constexpr __vector_type_t<_Tp, _Np> + __vector_broadcast_impl(_Tp __x, index_sequence<_I...>) + { return __vector_type_t<_Tp, _Np>{((void)_I, __x)...}; } + template <size_t _Np, typename _Tp> _GLIBCXX_SIMD_INTRINSIC constexpr __vector_type_t<_Tp, _Np> __vector_broadcast(_Tp __x) - { - return __call_with_n_evaluations<_Np>( - [](auto... __xx) _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA { - return __vector_type_t<_Tp, _Np>{__xx...}; - }, [&__x](int) _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA { return __x; }); - } + { return __vector_broadcast_impl<_Np, _Tp>(__x, make_index_sequence<_Np>()); } // }}} // __generate_vector{{{
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