[Bug rtl-optimization/121757] [15/16 Regression] ICE in rtl_ssa::clobber_info::recompute_group

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121757

--- Comment #2 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> No source, but maybe this triggers an idea?
Not much to go on :)  Even line numbers for the backtrace would help.