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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/97487] [10/11 Regression] ICE in
 expand_simple_binop, at optabs.c:939 since r10-1420-g744fd446c321f78f
Date: Mon, 19 Oct 2020 17:57:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97487

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ifcvt throws random expressions as operand to expand_binop, which in turn
attempts to force_operand them, but force_operand handles only the most com=
mon
rtls (e.g. for binops only those that have corresponding binop optab, simil=
arly
for unops etc.).
In this case the SET_SRC and thus if_info->b is a VEC_SELECT which
force_operand isn't able to handle (but there are many others that can't be
handled either).=