[Bug tree-optimization/94300] [10 Regression] memcpy vector load miscompiled during const-prop since r10-6809-g7f5617b00445dcc8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94300

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48105
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48105&action=edit
gcc10-pr94300.patch

Untested fix.