On Fri, 2 Sep 2022, Richard Sandiford wrote:
> vect_optimize_slp_pass always treats the starting layout as valid,
> to avoid having to "optimise" when every possible choice is invalid.
> But it gives the starting layout a high cost if it seems like the
> target might reject it, in the hope that th
vect_optimize_slp_pass always treats the starting layout as valid,
to avoid having to "optimise" when every possible choice is invalid.
But it gives the starting layout a high cost if it seems like the
target might reject it, in the hope that this will encourage other
(valid) layouts.
The testcase
