* make the _Flags template parameter of Matrix default to the corrected

  flags. This ensures that unless explicitly messed up otherwise,
  a Matrix type is equal to its own Eval type. This seriously reduces
  the number of types instantiated. Measured +13% compile speed, -7%
  binary size.

* Improve doc of Matrix template parameters.

1 files changed, 7 insertions, 2 deletions

diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h
index 7af1bb3ed..39bda7e6e 100644
--- a/Eigen/src/Core/Product.h
+++ b/Eigen/src/Core/Product.h
@@ -163,9 +163,14 @@ template<typename T> class ei_product_eval_to_column_major
     typedef Matrix<_Scalar,
                   ei_traits<T>::RowsAtCompileTime,
                   ei_traits<T>::ColsAtCompileTime,
-                  ei_corrected_matrix_flags<_Scalar, ei_size_at_compile_time<_MaxRows,_MaxCols>::ret, _Flags>::ret & ~RowMajorBit,
                   ei_traits<T>::MaxRowsAtCompileTime,
-                  ei_traits<T>::MaxColsAtCompileTime> type;
+                  ei_traits<T>::MaxColsAtCompileTime,
+                  ei_corrected_matrix_flags<
+                      _Scalar,
+                      ei_size_at_compile_time<_MaxRows,_MaxCols>::ret,
+                      _Flags
+                  >::ret & ~RowMajorBit
+            > type;
 };
 
 // as ei_nested, but evaluate to a column-major matrix if an evaluation is required