[Bug debug/66691] [5/6 Regression] ICE on valid code at -O3 with -g enabled in simplify_subreg, at simplify-rtx.c:5744

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66691

--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Thanks for reporting this.  I've started work on it.