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* Big change in Block and Map:

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- added a MapBase base xpr on top of which Map and the specialization
    of Block are implemented
  - MapBase forces both aligned loads (and aligned stores, see below) in expressions
    such as "x.block(...) += other_expr"
* Significant vectorization improvement:
 - added a AlignedBit flag meaning the first coeff/packet is aligned,
   this allows to not generate extra code to deal with the first unaligned part
 - removed all unaligned stores when no unrolling
 - removed unaligned loads in Sum when the input as the DirectAccessBit flag
* Some code simplification in CacheFriendly product
* Some minor documentation improvements
This commit is contained in:
Gael Guennebaud
2008-08-09 18:41:24 +00:00
parent becbeda50a
commit 4fa40367e9
17 changed files with 397 additions and 296 deletions
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6
Eigen/src/Core/util/Meta.h
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@@ -168,12 +168,14 @@ class ei_corrected_matrix_flags
packet_access_bit
= ei_packet_traits<Scalar>::size > 1
&& (is_big || linear_size%ei_packet_traits<Scalar>::size==0)
? PacketAccessBit : 0
? PacketAccessBit : 0,
aligned_bit = packet_access_bit
&& (is_big || linear_size%ei_packet_traits<Scalar>::size==0) ? AlignedBit : 0
};
public:
enum { ret = (SuggestedFlags & ~(EvalBeforeNestingBit | EvalBeforeAssigningBit | PacketAccessBit | RowMajorBit))
| LinearAccessBit | DirectAccessBit | packet_access_bit | row_major_bit
| LinearAccessBit | DirectAccessBit | packet_access_bit | row_major_bit | aligned_bit
};
};