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libstdc++: Avoid ill-formed types on ARM

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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.
This commit is contained in:
Matthias Kretz 2024-04-17 09:11:25 +02:00
parent 299d14a546
commit 0fc7f3c6ad
1 changed files with 2 additions and 2 deletions
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4
libstdc++-v3/include/experimental/bits/simd_builtin.h
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@ -1464,7 +1464,7 @@ template <typename _Abi, typename>
[&](auto __i) constexpr { [&](auto __i) constexpr {
return static_cast<_Tp>(__i < _Np ? __mem[__i] : 0); 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>( return __generate_vector<_Tp, _SimdMember<_Tp>::_S_full_size>(
[&](auto __i) constexpr _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA { [&](auto __i) constexpr _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA {
return static_cast<_Tp>(__i < _Np ? __mem[__i] : 0); 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) for (size_t __i = 0; __i < _Np; ++__i)
__mem[__i] = __v[__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 { __execute_n_times<_Np>([&](auto __i) constexpr _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA {
__mem[__i] = __v[__i]; __mem[__i] = __v[__i];
}); });