From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id B4C5D385782E; Fri, 2 Apr 2021 19:34:23 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B4C5D385782E From: "hjl.tools at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/99881] Regression compare -O2 -ftree-vectorize with -O2 on SKX/CLX Date: Fri, 02 Apr 2021 19:34:23 +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: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: hjl.tools at gmail dot com 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: attachments.created 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Apr 2021 19:34:23 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99881 --- Comment #2 from H.J. Lu --- Created attachment 50501 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50501&action=3Dedit A patch to add vec_contruct cost ix86_builtin_vectorization_cost has case vec_construct: { /* N element inserts into SSE vectors. */ int cost =3D TYPE_VECTOR_SUBPARTS (vectype) * ix86_cost->sse_op; /* One vinserti128 for combining two SSE vectors for AVX256. */ if (GET_MODE_BITSIZE (mode) =3D=3D 256) cost +=3D ix86_vec_cost (mode, ix86_cost->addss); /* One vinserti64x4 and two vinserti128 for combining SSE and AVX256 vectors to AVX512. */ else if (GET_MODE_BITSIZE (mode) =3D=3D 512) cost +=3D 3 * ix86_vec_cost (mode, ix86_cost->addss); return cost;=20 } Add vec_contruct cost for vec_construct operation.=