From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C44873858D28; Wed, 8 Dec 2021 01:28:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C44873858D28 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/103611] GCC generates suboptimal code for SSE2/SSE4.1 64-bit integer element extraction on 32-bit x86 targets Date: Wed, 08 Dec 2021 01:28:10 +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: 11.2.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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 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: Wed, 08 Dec 2021 01:28:10 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103611 --- Comment #3 from Andrew Pinski --- Hmm, GCC 4.8.1-5.5.0 produces: long long SSE2ExtractInt64<0>(long long __vector): .LFB499: .cfi_startproc pshufd xmm1, xmm0, 1 movd eax, xmm0 movd edx, xmm1 ret long long SSE2ExtractInt64<1>(long long __vector): .LFB500: .cfi_startproc pshufd xmm1, xmm0, 3 pshufd xmm0, xmm0, 2 movd edx, xmm1 movd eax, xmm0 ret For the code in comment #0. And always used memory for code in comment #2.=