[Bug tree-optimization/96167] fails to detect ROL pattern in simple case, but succeeds when operand goes through memcpy

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96167

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah.  But at least if the target has corresponding mode rotate optab, there is
no reason not to support any rotates by constant multiples of byte size (for
bit rotates we don't have infrastructure for that).