https://gcc.gnu.org/g:e6b19675fb3397992a8f88ef031d57c4dcd73cd6
commit r13-8703-ge6b19675fb3397992a8f88ef031d57c4dcd73cd6
Author: Matthias Kretz <m.kr...@gsi.de>
Date: Thu Jun 1 10:40:14 2023 +0200
libstdc++: Fix condition for supported SIMD types on ARMv8
Signed-off-by: Matthias Kretz <m.kr...@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/110050
* include/experimental/bits/simd.h (__vectorized_sizeof): With
__have_neon_a32 only single-precision float works (in addition
to integers).
(cherry picked from commit 2fbbaa77c8468ed2bdf2cfa1a5890991e4e98eef)
Diff:
---
libstdc++-v3/include/experimental/bits/simd.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/experimental/bits/simd.h
b/libstdc++-v3/include/experimental/bits/simd.h
index f94b8361ab06..834fe923065b 100644
--- a/libstdc++-v3/include/experimental/bits/simd.h
+++ b/libstdc++-v3/include/experimental/bits/simd.h
@@ -2808,8 +2808,10 @@ template <typename _Tp>
return 16;
// ARM:
- if constexpr (__have_neon_a64
- || (__have_neon_a32 && !is_same_v<_Tp, double>) )
+ if constexpr (__have_neon_a64)
+ return 16;
+ if constexpr (__have_neon_a32 and (not is_floating_point_v<_Tp>
+ or is_same_v<_Tp, float>))
return 16;
if constexpr (__have_neon
&& sizeof(_Tp) < 8
