Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754203Ab2HTMi1 (ORCPT ); Mon, 20 Aug 2012 08:38:27 -0400 Received: from nat28.tlf.novell.com ([130.57.49.28]:47921 "EHLO nat28.tlf.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752635Ab2HTMiX convert rfc822-to-8bit (ORCPT ); Mon, 20 Aug 2012 08:38:23 -0400 Message-Id: <50324BD902000078000966B7@nat28.tlf.novell.com> X-Mailer: Novell GroupWise Internet Agent 12.0.0 Date: Mon, 20 Aug 2012 13:38:17 +0100 From: "Jan Beulich" To: "Andi Kleen" Cc: "Andi Kleen" , , , , , Subject: Re: [PATCH 46/74] x86, lto: Disable fancy hweight optimizations for LTO References: <1345345030-22211-1-git-send-email-andi@firstfloor.org> <1345345030-22211-47-git-send-email-andi@firstfloor.org> <5030B1A5020000780008A200@nat28.tlf.novell.com> <20120819151516.GS11413@one.firstfloor.org> <50323427020000780009660E@nat28.tlf.novell.com> <20120820111838.GC4461@tassilo.jf.intel.com> In-Reply-To: <20120820111838.GC4461@tassilo.jf.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 603 Lines: 17 >>> On 20.08.12 at 13:18, Andi Kleen wrote: >> That's not the point: The point really is that you could allow the >> alternative regardless of LTO, and just penalize the LTO case >> by having even the asm clobber the registers that a function call >> would not preserve. > > That's just what a normal call does, right? Exactly. Jan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/