[Bug tree-optimization/106630] [13 Regression] ICE: Segmentation fault signal terminated program cc1plus with -O2 since r13-1268-g8c99e307b20c50

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106630

--- Comment #2 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Works with -fno-thread-jumps or with -fdisable-tree-dom3.

I haven't investigated whether the threading done in DOM2 is generating invalid
IL, but it looks like this match.pd pattern is going around in circles:

/* (A * C) +- (B * C) -> (A+-B) * C and (A * C) +- A -> A * (C+-1).
    Modeled after fold_plusminus_mult_expr.  */
(if (!TYPE_SATURATING (type)
     && (!FLOAT_TYPE_P (type) || flag_associative_math))
 (for plusminus (plus minus)
...
...