From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 7C44E3853D32; Mon, 17 Apr 2023 13:41:22 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7C44E3853D32
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1681738882;
	bh=7lhCyHSUjZOIMF50fnTHf1FKzr4rcQWPdwIOtDUMjEs=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=uuJaUpbtA20VJjsvQ3y2jnFQIzeQH322QcOnVN9GS85QXgShqQ4SljNgGk7XJZaY3
	 hw6obsu/gAX/uj/dOHsscXUJgiLnYw5mrIlrzxMYwgr/GGKrrFGzFPTzUsv5T60MBS
	 cFum+MWI6VXc8LJX4fGe3hI7nAjNLa65t0qP6d0Q=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/108910] [12 Regression] Further ICE in
 aarch64_layout_arg
Date: Mon, 17 Apr 2023 13:41:20 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: rsandifo at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-108910-4-G03DXxFMOC@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-108910-4@http.gcc.gnu.org/bugzilla/>
References: <bug-108910-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108910

--- Comment #19 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Sandiford
<rsandifo@gcc.gnu.org>:

https://gcc.gnu.org/g:66700dde0dfb2c2b07d771f90df1fe16d1d61ce9

commit r12-9416-g66700dde0dfb2c2b07d771f90df1fe16d1d61ce9
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Mon Apr 17 14:41:00 2023 +0100

    aarch64: Don't trust TYPE_ALIGN for pointers [PR108910]

    The aarch64 PCS rules ignore user alignment for scalars and
    vectors and use the "natural" alignment of the type.  GCC tried
    to calculate that natural alignment using:

      TYPE_ALIGN (TYPE_MAIN_VARIANT (type))

    But as discussed in the PR, it's possible that the main variant
    of a pointer type is an overaligned type (although that's usually
    accidental).

    This isn't known to be a problem for other types, so this patch
    changes the bare minimum.  It might be that we need to ignore
    TYPE_ALIGN in other cases too.

    gcc/
            PR target/108910
            * config/aarch64/aarch64.cc (aarch64_function_arg_alignment): Do
            not trust TYPE_ALIGN for pointer types; use POINTER_SIZE instea=
d.

    gcc/testsuite/
            PR target/108910
            * gcc.dg/torture/pr108910.c: New test.

    (cherry picked from commit 66946624b96b762985de56444d726a0ebd4e0df5)=