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* fix multiple temporary copies for coeff based products

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* introduce a lazy product version of the coefficient based implementation
  => flagged is not used anymore
  => small outer product are now lazy by default (aliasing is really unlikely for outer products)
This commit is contained in:
Gael Guennebaud
2010-02-09 11:05:39 +01:00
parent 0398e21198
commit 5686eca7b1
8 changed files with 75 additions and 49 deletions
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12
Eigen/src/Core/NoAlias.h
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@@ -70,13 +70,13 @@ class NoAlias
EIGEN_STRONG_INLINE ExpressionType& operator-=(const ProductBase<ProductDerived, Lhs,Rhs>& other)
{ other.derived().subTo(m_expression); return m_expression; }
template<typename Lhs, typename Rhs>
EIGEN_STRONG_INLINE ExpressionType& operator+=(const GeneralProduct<Lhs,Rhs,CoeffBasedProduct>& other)
{ return m_expression.derived() += other.template flagged<0,EvalBeforeAssigningBit|EvalBeforeNestingBit>(); }
template<typename Lhs, typename Rhs, int NestingFlags>
EIGEN_STRONG_INLINE ExpressionType& operator+=(const CoeffBasedProduct<Lhs,Rhs,NestingFlags>& other)
{ return m_expression.derived() += CoeffBasedProduct<Lhs,Rhs,0>(other.lhs(), other.rhs()); }
template<typename Lhs, typename Rhs>
EIGEN_STRONG_INLINE ExpressionType& operator-=(const GeneralProduct<Lhs,Rhs,CoeffBasedProduct>& other)
{ return m_expression.derived() -= other.template flagged<0,EvalBeforeAssigningBit|EvalBeforeNestingBit>(); }
template<typename Lhs, typename Rhs, int NestingFlags>
EIGEN_STRONG_INLINE ExpressionType& operator-=(const CoeffBasedProduct<Lhs,Rhs,NestingFlags>& other)
{ return m_expression.derived() -= CoeffBasedProduct<Lhs,Rhs,0>(other.lhs(), other.rhs()); }
#endif
protected: