OK for master and all branches? (this issue only surfaced because of the new
test)
------------ 8< -----------------
On ARM NEON doesn't support double, so __is_intrinsic_type_v<double,
whatever> should say false (instead of being ill-formed).
Signed-off-by: Matthias Kretz <m.kr...@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/109261
* include/experimental/bits/simd.h (__intrinsic_type):
Specialize __intrinsic_type<double, 8> and
__intrinsic_type<double, 16> in any case, but provide the member
type only with __aarch64__.
---
libstdc++-v3/include/experimental/bits/simd.h | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--
──────────────────────────────────────────────────────────────────────────
Dr. Matthias Kretz https://mattkretz.github.io
GSI Helmholtz Centre for Heavy Ion Research https://gsi.de
stdₓ::simd
──────────────────────────────────────────────────────────────────────────diff --git a/libstdc++-v3/include/experimental/bits/simd.h b/libstdc++-v3/include/experimental/bits/simd.h
index b0571ca26c4..d1f388310f9 100644
--- a/libstdc++-v3/include/experimental/bits/simd.h
+++ b/libstdc++-v3/include/experimental/bits/simd.h
@@ -2369,15 +2369,21 @@ struct __intrinsic_type<float, 8, void>
struct __intrinsic_type<float, 16, void>
{ using type = float32x4_t; };
-#if _GLIBCXX_SIMD_HAVE_NEON_A64
template <>
struct __intrinsic_type<double, 8, void>
- { using type = float64x1_t; };
+ {
+#if _GLIBCXX_SIMD_HAVE_NEON_A64
+ using type = float64x1_t;
+#endif
+ };
template <>
struct __intrinsic_type<double, 16, void>
- { using type = float64x2_t; };
+ {
+#if _GLIBCXX_SIMD_HAVE_NEON_A64
+ using type = float64x2_t;
#endif
+ };
#define _GLIBCXX_SIMD_ARM_INTRIN(_Bits, _Np) \
template <> \
