From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 50D823858D32; Fri, 12 Jan 2024 03:31:58 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 50D823858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1705030318; bh=WTQiQ5ATt1cL/79hE9U06HzxAwCFOB8HDEtZ8bEA5dM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=WPvVXTTyWiHuGUGOL7uz+HaxkRFeaePGaNV8bowU3f11KSYJdTGhwCDbKPjt9sX1+ 8jOm1htB2bmVxq9EqS+xks/H8aFctXk3xojzHlUpqY/AZcdtckLc2kD0TBGE5q0/8o 3n28vKQaATg7B3OcetTk08o/VTJe37aJHJiBUL+U= From: "liuhongt at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113345] miss optimization for psign{b,w,d}. Date: Fri, 12 Jan 2024 03:31:58 +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: liuhongt at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: INVALID 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: bug_status resolution 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=3D113345 Hongtao Liu changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #2 from Hongtao Liu --- I realize it should psignb will select 0 when the second operand is 0. it's b < 0 ? -a : ((b =3D=3D 0) ? 0 : a).=