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From: "aldyh at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/106630] [13 Regression] ICE: Segmentation
 fault signal terminated program cc1plus with -O2 since
 r13-1268-g8c99e307b20c50
Date: Mon, 15 Aug 2022 19:27:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106630

--- 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 inv=
alid
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)
...
...=