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* add bench/benchVecAdd.cpp by Gael, fix crash (ei_pload on non-aligned)

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* introduce packet(int), make use of it in linear vectorized paths
  --> completely fixes the slowdown noticed in benchVecAdd.
* generalize coeff(int) to linear-access xprs
* clarify the access flag bits
* rework api dox in Coeffs.h and util/Constants.h
* improve certain expressions's flags, allowing more vectorization
* fix bug in Block: start(int) and end(int) returned dyn*dyn size
* fix bug in Block: just because the Eval type has packet access
  doesn't imply the block xpr should have it too.
This commit is contained in:
Benoit Jacob
2008-06-26 16:06:41 +00:00
parent 5b0da4b778
commit 25ba9f377c
23 changed files with 558 additions and 264 deletions
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18
Eigen/src/Core/Product.h
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@@ -151,8 +151,7 @@ struct ei_traits<Product<LhsNested, RhsNested, ProductMode> >
&& (ProductMode==(int)CacheFriendlyProduct ? (int)LhsFlags & RowMajorBit : (!CanVectorizeLhs)),
RemovedBits = ~((EvalToRowMajor ? 0 : RowMajorBit)
| ((RowsAtCompileTime == Dynamic || ColsAtCompileTime == Dynamic) ? 0 : LargeBit)
| LinearAccessBit),
| ((RowsAtCompileTime == Dynamic || ColsAtCompileTime == Dynamic) ? 0 : LargeBit)),
Flags = ((unsigned int)(LhsFlags | RhsFlags) & HereditaryBits & RemovedBits)
| EvalBeforeAssigningBit
@@ -224,6 +223,18 @@ template<typename LhsNested, typename RhsNested, int ProductMode> class Product
return res;
}
/* Allow index-based non-packet access. It is impossible though to allow index-based packed access,
* which is why we don't set the LinearAccessBit.
*/
const Scalar _coeff(int index) const
{
Scalar res;
const int row = RowsAtCompileTime == 1 ? 0 : index;
const int col = RowsAtCompileTime == 1 ? index : 0;
ScalarCoeffImpl::run(row, col, m_lhs, m_rhs, res);
return res;
}
template<int LoadMode>
const PacketScalar _packet(int row, int col) const
{
@@ -235,9 +246,6 @@ template<typename LhsNested, typename RhsNested, int ProductMode> class Product
return res;
}
template<typename Lhs_, typename Rhs_, int ProductMode_, typename DestDerived_, bool DirectAccess_>
friend struct ei_cache_friendly_selector;
protected:
const LhsNested m_lhs;
const RhsNested m_rhs;