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* [gcc r14-10001] libstdc++: Avoid ill-formed types on ARM
@ 2024-04-17 8:34 Matthias Kretz
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From: Matthias Kretz @ 2024-04-17 8:34 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
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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