diff options
Diffstat (limited to 'Eigen/src/Core/products/GeneralBlockPanelKernel.h')
| -rw-r--r-- | Eigen/src/Core/products/GeneralBlockPanelKernel.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Eigen/src/Core/products/GeneralBlockPanelKernel.h b/Eigen/src/Core/products/GeneralBlockPanelKernel.h index e971b3339..216d1ad52 100644 --- a/Eigen/src/Core/products/GeneralBlockPanelKernel.h +++ b/Eigen/src/Core/products/GeneralBlockPanelKernel.h @@ -156,7 +156,8 @@ void evaluateProductBlockingSizesHeuristic(Index& k, Index& m, Index& n, Index n // registers. However once the latency is hidden there is no point in // increasing the value of k, so we'll cap it at 320 (value determined // experimentally). - const Index k_cache = (numext::mini<Index>)((l1-ksub)/kdiv, 320); + // To avoid that k vanishes, we make k_cache at least as big as kr + const Index k_cache = numext::maxi<Index>(kr, (numext::mini<Index>)((l1-ksub)/kdiv, 320)); if (k_cache < k) { k = k_cache - (k_cache % kr); eigen_internal_assert(k > 0); |