public inbox for libstdc++-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r11-7070] libstdc++: Support -mlong-double-64 on PPC
@ 2021-02-03 15:50 Jonathan Wakely
0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2021-02-03 15:50 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:db256f9bef8c376e9d88e8f32ce94a03b6d105ee
commit r11-7070-gdb256f9bef8c376e9d88e8f32ce94a03b6d105ee
Author: Matthias Kretz <kretz@kde.org>
Date: Wed Feb 3 15:49:29 2021 +0000
libstdc++: Support -mlong-double-64 on PPC
libstdc++-v3/ChangeLog:
* include/experimental/bits/simd.h: Let __intrinsic_type<long
double, N> be valid if sizeof(long double) == sizeof(double) and
use a __vector double as member type.
Diff:
---
libstdc++-v3/include/experimental/bits/simd.h | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/libstdc++-v3/include/experimental/bits/simd.h b/libstdc++-v3/include/experimental/bits/simd.h
index c379721c7be..477af86fd5e 100644
--- a/libstdc++-v3/include/experimental/bits/simd.h
+++ b/libstdc++-v3/include/experimental/bits/simd.h
@@ -2285,7 +2285,9 @@ template <typename _Tp, size_t _Bytes>
struct __intrinsic_type<_Tp, _Bytes,
enable_if_t<__is_vectorizable_v<_Tp> && _Bytes <= 16>>
{
- static_assert(!is_same_v<_Tp, long double>,
+ static constexpr bool _S_is_ldouble = is_same_v<_Tp, long double>;
+ // allow _Tp == long double with -mlong-double-64
+ static_assert(!(_S_is_ldouble && sizeof(long double) > sizeof(double)),
"no __intrinsic_type support for long double on PPC");
#ifndef __VSX__
static_assert(!is_same_v<_Tp, double>,
@@ -2297,8 +2299,11 @@ template <typename _Tp, size_t _Bytes>
"no __intrinsic_type support for integers larger than 4 Bytes "
"on PPC w/o POWER8 vectors");
#endif
- using type = typename __intrinsic_type_impl<conditional_t<
- is_floating_point_v<_Tp>, _Tp, __int_for_sizeof_t<_Tp>>>::type;
+ using type =
+ typename __intrinsic_type_impl<
+ conditional_t<is_floating_point_v<_Tp>,
+ conditional_t<_S_is_ldouble, double, _Tp>,
+ __int_for_sizeof_t<_Tp>>>::type;
};
#endif // __ALTIVEC__
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2021-02-03 15:50 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-03 15:50 [gcc r11-7070] libstdc++: Support -mlong-double-64 on PPC Jonathan Wakely
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).