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From: Matthias Kretz <mkretz@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r14-10001] libstdc++: Avoid ill-formed types on ARM Date: Wed, 17 Apr 2024 08:34:43 +0000 (GMT) [thread overview] Message-ID: <20240417083444.375473858CDB@sourceware.org> (raw) https://gcc.gnu.org/g:0fc7f3c6adc8543f55ec35b309016d9d9c4ddd35 commit r14-10001-g0fc7f3c6adc8543f55ec35b309016d9d9c4ddd35 Author: Matthias Kretz <m.kretz@gsi.de> Date: Wed Apr 17 09:11:25 2024 +0200 libstdc++: Avoid ill-formed types on ARM This resolves failing tests in check-simd. Signed-off-by: Matthias Kretz <m.kretz@gsi.de> libstdc++-v3/ChangeLog: PR libstdc++/114750 * include/experimental/bits/simd_builtin.h (_SimdImplBuiltin::_S_load, _S_store): Fall back to copying scalars if the memory type cannot be vectorized for the target. Diff: --- libstdc++-v3/include/experimental/bits/simd_builtin.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libstdc++-v3/include/experimental/bits/simd_builtin.h b/libstdc++-v3/include/experimental/bits/simd_builtin.h index 28227a5d97f..af0c4886108 100644 --- a/libstdc++-v3/include/experimental/bits/simd_builtin.h +++ b/libstdc++-v3/include/experimental/bits/simd_builtin.h @@ -1464,7 +1464,7 @@ template <typename _Abi, typename> [&](auto __i) constexpr { return static_cast<_Tp>(__i < _Np ? __mem[__i] : 0); }); - else if constexpr (sizeof(_Up) > 8) + else if constexpr (sizeof(_Up) > 8 or __vectorized_sizeof<_Up>() <= sizeof(_Up)) return __generate_vector<_Tp, _SimdMember<_Tp>::_S_full_size>( [&](auto __i) constexpr _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA { return static_cast<_Tp>(__i < _Np ? __mem[__i] : 0); @@ -1536,7 +1536,7 @@ template <typename _Abi, typename> for (size_t __i = 0; __i < _Np; ++__i) __mem[__i] = __v[__i]; } - else if constexpr (sizeof(_Up) > 8) + else if constexpr (sizeof(_Up) > 8 or __vectorized_sizeof<_Up>() <= sizeof(_Up)) __execute_n_times<_Np>([&](auto __i) constexpr _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA { __mem[__i] = __v[__i]; });
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