diff options
| author |  Gael Guennebaud <g.gael@free.fr> | 2015-08-06 15:31:07 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2015-08-06 15:31:07 +0200 |
| commit | 1f5024332e47f295c991c3781d57d0466d41a9c8 (patch) | |
| tree | 154fa01d41076ca58bdbff8c3bb0850119df92fa /Eigen/src/Core/util/Constants.h | |
| parent | 65186ef18d6212b3d09b1d619f1cf1019c2ae0fb (diff) | |
First part of a big refactoring of alignment control to enable the handling of arbitrarily aligned buffers. It includes:
- AlignedBit flag is deprecated. Alignment is now specified by the evaluator through the 'Alignment' enum, e.g., evaluator<Xpr>::Alignment. Its value is in Bytes.
- Add several enums to specify alignment: Aligned8, Aligned16, Aligned32, Aligned64, Aligned128. AlignedMax corresponds to EIGEN_MAX_ALIGN_BYTES. Such enums are used to define the above Alignment value, and as the 'Options' template parameter of Map<> and Ref<>.
- The Aligned enum is now deprecated. It is now an alias for Aligned16.
- Currently, traits<Matrix<>>, traits<Array<>>, traits<Ref<>>, traits<Map<>>, and traits<Block<>> also expose the Alignment enum.
Diffstat (limited to 'Eigen/src/Core/util/Constants.h')
| -rw-r--r-- | Eigen/src/Core/util/Constants.h | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/Eigen/src/Core/util/Constants.h b/Eigen/src/Core/util/Constants.h index 93c0786fa..3e811a173 100644 --- a/Eigen/src/Core/util/Constants.h +++ b/Eigen/src/Core/util/Constants.h @@ -1,7 +1,7 @@ // This file is part of Eigen, a lightweight C++ template library // for linear algebra. // -// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr> +// Copyright (C) 2008-2015 Gael Guennebaud <gael.guennebaud@inria.fr> // Copyright (C) 2007-2009 Benoit Jacob <jacob.benoit.1@gmail.com> // // This Source Code Form is subject to the terms of the Mozilla @@ -140,7 +140,7 @@ const unsigned int LvalueBit = 0x20; */ const unsigned int DirectAccessBit = 0x40; -/** \ingroup flags +/* \ingroup flags * * means the first coefficient packet is guaranteed to be aligned. * An expression cannot has the AlignedBit without the PacketAccessBit flag. @@ -215,12 +215,31 @@ enum { }; /** \ingroup enums - * Enum for indicating whether an object is aligned or not. */ + * Enum for indicating whether a buffer is aligned or not. */ enum { - /** Object is not correctly aligned for vectorization. */ - Unaligned=0, - /** Object is aligned for vectorization. */ - Aligned=1 + Unaligned=0, /**< Data pointer has no specific alignment. */ + Aligned8=8, /**< Data pointer is aligned on a 8 bytes boundary. */ + Aligned16=16, /**< Data pointer is aligned on a 16 bytes boundary. */ + Aligned32=32, /**< Data pointer is aligned on a 32 bytes boundary. */ + Aligned64=64, /**< Data pointer is aligned on a 64 bytes boundary. */ + Aligned128=128, /**< Data pointer is aligned on a 128 bytes boundary. */ + AlignedMask=255, + Aligned=16, /**< \deprecated Synonym for Aligned16. */ +#if EIGEN_MAX_ALIGN_BYTES==128 + AlignedMax = Aligned128 +#elif EIGEN_MAX_ALIGN_BYTES==64 + AlignedMax = Aligned64 +#elif EIGEN_MAX_ALIGN_BYTES==32 + AlignedMax = Aligned32 +#elif EIGEN_MAX_ALIGN_BYTES==16 + AlignedMax = Aligned16 +#elif EIGEN_MAX_ALIGN_BYTES==8 + AlignedMax = Aligned8 +#elif EIGEN_MAX_ALIGN_BYTES==0 + AlignedMax = Unaligned +#else +#error Invalid value for EIGEN_MAX_ALIGN_BYTES +#endif }; /** \ingroup enums |