6df6055d5c
This adds a forward propagation phase to the permute optimization machinery which allows us to handle "any" permute for all kinds of nodes. To match previous behavior cost-wise we still do not allow non-external/constant nodes to be duplicated for multiple permutes and this is ensured during propagation itself. 2021-06-29 Richard Biener <rguenther@suse.de> * tree-vect-slp.c (vect_optimize_slp): Forward propagate to "any" permute nodes and relax "any" permute proapgation during iterative backward propagation. |
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