From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 9FB0138582B2; Thu, 4 Jan 2024 16:25:36 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9FB0138582B2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1704385536; bh=5scLoJbL+Cgbfop16Dw/vVlo7UJkJt6Z3jRncmMYvLk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=UfUgAlCDGF08T1WwuwT8FZSL5IjLpvY1YzSkzl3AzvXVwf+5l8YE+GfH3Tu5ImQAD o2RcBzocv/PyPie2jxz1El/DDvMzy2Epr8cF+8c37p9kMtbpHdKo/uk05CZsRO9e5i FtxZGk1mzgYVjO51EeITEC/bRoETeC+fXSB8EkWc= From: "roger at nextmovesoftware dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113231] x86_64 uses SSE instructions for `*mem <<= const` at -Os Date: Thu, 04 Jan 2024 16:25:35 +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: 14.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: roger at nextmovesoftware dot com X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: roger at nextmovesoftware dot com X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status assigned_to 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=3D113231 Roger Sayle changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |roger at nextmoveso= ftware dot com --- Comment #4 from Roger Sayle --- I'm testing a patch, for more accurate conversion gains/costs in the scalar-to-vector pass. Adding -mno-stv will work around the problem.=