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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/96128] [11 Regression] ICE in do_store_flag, at
 expr.c:12247 since r11-1445-g502d63b6d6141597bb18fd23c87736a1b384cf8f
Date: Thu, 09 Jul 2020 12:43:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96128

--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 9 Jul 2020, marxin at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96128
>=20
> --- Comment #2 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #1)
> > Just trace make_ssa_name ...
>=20
> So this one is leftover from gimplify.c where we expand the first argumen=
t to
> assignment to a SSA NAME and so we end up only with the vector comparison=
s, but
> no VEC_COND_EXPR.
> Would it be possible to remove the SSA_NAME in gimplify.c when we know the
> VEC_COND_EXPR is expanded to no-op?

Somehow switch gimplifying of the operand and evaluating "expanded to=20
no-op", other than that, no - the gimplifier doesn't perform DCE.=