diff options
Diffstat (limited to 'Eigen/src/Core/Assign.h')
| -rw-r--r-- | Eigen/src/Core/Assign.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Eigen/src/Core/Assign.h b/Eigen/src/Core/Assign.h index 494df7bd5..e025fa355 100644 --- a/Eigen/src/Core/Assign.h +++ b/Eigen/src/Core/Assign.h @@ -65,7 +65,8 @@ private: && (DstIsAligned || MaxSizeAtCompileTime == Dynamic), /* If the destination isn't aligned, we have to do runtime checks and we don't unroll, so it's only good for large enough sizes. */ - MaySliceVectorize = MightVectorize && DstHasDirectAccess && int(InnerMaxSize)>=3*PacketSize + MaySliceVectorize = MightVectorize && DstHasDirectAccess + && (int(InnerMaxSize)==Dynamic || int(InnerMaxSize)>=3*PacketSize) /* slice vectorization can be slow, so we only want it if the slices are big, which is indicated by InnerMaxSize rather than InnerSize, think of the case of a dynamic block in a fixed-size matrix */ @@ -86,8 +87,12 @@ public: private: enum { UnrollingLimit = EIGEN_UNROLLING_LIMIT * (Vectorized ? int(PacketSize) : 1), - MayUnrollCompletely = int(Derived::SizeAtCompileTime) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit), - MayUnrollInner = int(InnerSize) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit) + MayUnrollCompletely = int(Derived::SizeAtCompileTime) != Dynamic + && int(OtherDerived::CoeffReadCost) != Dynamic + && int(Derived::SizeAtCompileTime) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit), + MayUnrollInner = int(InnerSize) != Dynamic + && int(OtherDerived::CoeffReadCost) != Dynamic + && int(InnerSize) * int(OtherDerived::CoeffReadCost) <= int(UnrollingLimit) }; public: |