[Bug rtl-optimization/66412] [5/6 Regression] ICE on valid code at -O2 and -O3 with -g enabled in simplify_subreg, at simplify-rtx.c:5748

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66412

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I bet the bug is in whatever creates the mode mismatch.