From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 65BE03858D35; Thu, 7 Mar 2024 08:15:45 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 65BE03858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1709799345; bh=mXfu8AZEdMUcuHe9T4Rc69XD1qRoQM+kdgqluxw0vog=; h=From:To:Subject:Date:In-Reply-To:References:From; b=STAdgJXcsOir3QRiYayvaDhf9jXVOHJajwRUpDiHkhP8NSIWqHBwVDCY/G3hhWiz3 6f8p/9PDiYB+TKdghLrcAwprZvmMcRYsA56ARSwzfLhcyWMqWzxR/Qf98eMlsD0515 R91Wfq+Zazj1yyKRSe4TCrylo4Q6tDlDVwjm5NrM= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/114258] 2 stores happen when copying from a const union (array) to an union Date: Thu, 07 Mar 2024 08:15:44 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 13.2.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114258 --- Comment #2 from Richard Biener --- Huh, very strange RTL we emit for the union assignment. void func_1(union U6 *a) { g_13 =3D *a; } works OK though.=