[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

[ubizjak at gmail dot com]

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

--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #5)
> I bet the bug is in whatever creates the mode mismatch.

I don't think so. Combiner somehow mixes up i1src, please see Comment #6.