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fix severe perf bug: coeff-based matrix products were not considered aligned, typically preventing vectorization.

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added unit test.
This commit is contained in:
Benoit Jacob
2011-01-02 12:07:39 -05:00
parent 47a9d2ed54
commit fd4e366d7e
2 changed files with 3 additions and 0 deletions
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Eigen/src/Core/products/CoeffBasedProduct.h
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@@ -98,6 +98,7 @@ struct traits<CoeffBasedProduct<LhsNested,RhsNested,NestingFlags> >
Flags = ((unsigned int)(LhsFlags | RhsFlags) & HereditaryBits & ~RowMajorBit)
| (EvalToRowMajor ? RowMajorBit : 0)
| NestingFlags
| (LhsFlags & RhsFlags & AlignedBit)
// TODO enable vectorization for mixed types
| (SameType && (CanVectorizeLhs || CanVectorizeRhs) ? PacketAccessBit : 0),