[Bug debug/104778] [12 Regression] ICE in simplify_subreg, at simplify-rtx.cc:7324 since r12-1202-g9080a3bf232978

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104778

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 52614
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52614&action=edit
gcc12-pr104778.patch

Untested fix.