diff options
| author |  Francesco Mazzoli <f@mazzo.li> | 2020-01-13 16:15:30 +0100 |
|---|---|---|
| committer |  Gael Guennebaud <g.gael@free.fr> | 2020-02-07 18:16:16 +0100 |
| commit | 44df2109c8c700222643a9a45f144676348f4df1 (patch) | |
| tree | ca18d192bf612f4f72483915f68c83908423830b /Eigen/src/Core/util/XprHelper.h | |
| parent | 5ca10480b0756e40b0723d90adeba8506291fc7c (diff) | |
Pick full packet unconditionally when EIGEN_UNALIGNED_VECTORIZE
See comment for details.
Diffstat (limited to 'Eigen/src/Core/util/XprHelper.h')
| -rw-r--r-- | Eigen/src/Core/util/XprHelper.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h index 26aa609fe..22f8bdd6c 100644 --- a/Eigen/src/Core/util/XprHelper.h +++ b/Eigen/src/Core/util/XprHelper.h @@ -194,8 +194,20 @@ template<typename T> struct unpacket_traits }; }; +// If we vectorize regardless of alignment, always pick the full-sized packet, +// if we have enough data to process. +// +// Otherwise, pick the packet size we know is going to work with the alignment +// of the given data. See +// <https://gitlab.com/libeigen/eigen/merge_requests/46#note_270578113> for more +// information. +#if EIGEN_UNALIGNED_VECTORIZE template<int Size, typename PacketType, bool Stop = Size==Dynamic || Size >= unpacket_traits<PacketType>::size || is_same<PacketType,typename unpacket_traits<PacketType>::half>::value> +#else +template<int Size, typename PacketType, + bool Stop = Size==Dynamic || (Size%unpacket_traits<PacketType>::size)==0 || is_same<PacketType,typename unpacket_traits<PacketType>::half>::value> +#endif struct find_best_packet_helper; template< int Size, typename PacketType> |