[Bug tree-optimization/108647] [13 Regression] ICE in upper_bound, at value-range.h:950 with -O3 since r13-2974-g67166c9ec35d58ef

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108647

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Unfortunately that would mean for the non-equality cases that if
lhs.undefined_p () we don't return undefined but false (aka VARYING).
Another option is to add those if (op?.undefined_p ()) return false; to both
case BRS_TRUE: and case BRS_FALSE:.