[Bug tree-optimization/84811] ICE on valid code at -O3 in 64-bit mode on x86_64-linux-gnu: in smallest_mode_for_size, at stor-layout.c:355

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84811

--- Comment #17 from Zhendong Su <su at cs dot ucdavis.edu> ---
Created attachment 43694
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43694&action=edit
output from "gcctk -O3 -S -fdump-tree-all small.c"