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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/108656] [12/13 Regression] '-fcompare-debug' failure
 (length) w/ -O2 -fno-ipa-pure-const -fno-tree-dce --param
 early-inlining-insns=0 since r12-5236
Date: Mon, 06 Feb 2023 10:22:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108656

--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 6 Feb 2023, jakub at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108656
>=20
> --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Anyway, if we decided that it is ok to have just the incoming ab edges, w=
e'd
> need to change any code that can DCE or inline calls to update abnormal e=
dges
> not just for the case where the last stmt used to be can_make_abnormal_go=
to and
> no longer is, but also for the case when the first stmt was returns_twice=
 call
> and no longer is, in that case we'd need to drop that abnormal edge point=
ing to
> the start of the bb from the .ABNORMAL_DISPATCHER block.

Doesn't cleanup CFG do this via removal of the unreachable=20
.ABNORMAL_DISPATCHER?=