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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/112380] [14 regression] ICE when building Mesa
 (in combine, internal compiler error: in simplify_subreg) since
 r14-4612-g6decda1a35be57
Date: Sun, 05 Nov 2023 09:19:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112380

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |roger at nextmovesoftware =
dot com

--- Comment #9 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> (In reply to Andrew Pinski from comment #7)
> > That almost definitely just exposed the issue. Let me see if I can get a
> > testcase that fails without depending on that.
>=20
> New testcase which seems to have the same IR going into expand for GCC
> 13.2.0 and the trunk:
> [...]

This one seems to have started with:

commit r14-2526-g8911879415d6c2
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Fri Jul 14 18:10:05 2023 +0100

    i386: Improved insv of DImode/DFmode {high,low}parts into TImode.=