From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by sourceware.org (Postfix) with ESMTP id 3483B385841A for ; Fri, 23 Feb 2024 17:58:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 3483B385841A Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=kernel.crashing.org ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 3483B385841A Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=63.228.1.57 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708711084; cv=none; b=Ud42CkGuRxiR23kGNPq8rmtKYbwOfgJkhlVobhCdEqCmyjPkgt9KnUpTkodF7NCDGVwFWMENRcFehm2ydiupjXRn1oVvL/v+jn32aDRw2xxbQT7A35fVychbAk//X5v8diopcWHbrb1aPDWQR0P84jSvkgOLn5wILMvGI9wQ+/w= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708711084; c=relaxed/simple; bh=ng/z8MWFt/jBn23nlOvPCpfZZKL4YL4MsN38hdhcb6M=; h=Date:From:To:Subject:Message-ID:Mime-Version; b=ItDnmETlw7QoopsbNKAK6iUcW2rFsCVqBjw/LptwZWHbgnaKHvr6+bv7YAtGNW3vv/elAu51B1y9gzUH7j+pB7ARHTgE8hK81mh23mGuPKWKsEMrgF11prJWvmGeRDBYDF+q9sMWu8+7e+OMKSrDiGW54n2DvPaAC27gArQayhs= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 41NHv2To014249; Fri, 23 Feb 2024 11:57:02 -0600 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 41NHv2aF014248; Fri, 23 Feb 2024 11:57:02 -0600 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Fri, 23 Feb 2024 11:57:02 -0600 From: Segher Boessenkool To: "Kewen.Lin" Cc: Michael Meissner , gcc-patches@gcc.gnu.org, Peter Bergner , David Edelsohn Subject: Re: Repost [PATCH 1/6] Add -mcpu=future Message-ID: <20240223175702.GM19790@gate.crashing.org> References: <4a7b481d-8967-7f90-ad30-7df955552db8@linux.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,SPF_HELO_PASS,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Tue, Feb 20, 2024 at 06:35:34PM +0800, Kewen.Lin wrote: > on 2024/2/8 03:58, Michael Meissner wrote: > $ grep -r "define PROCESSOR_DEFAULT" gcc/config/rs6000/ > gcc/config/rs6000/aix71.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/aix71.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7 > gcc/config/rs6000/aix72.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/aix72.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7 > gcc/config/rs6000/aix73.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER8 > gcc/config/rs6000/aix73.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/darwin.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC7400 > gcc/config/rs6000/darwin.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER4 > gcc/config/rs6000/freebsd64.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC7450 > gcc/config/rs6000/freebsd64.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/linux64.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/linux64.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/rs6000.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC603 > gcc/config/rs6000/rs6000.h:#define PROCESSOR_DEFAULT64 PROCESSOR_RS64A > gcc/config/rs6000/vxworks.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC604 > > , and they are unlikely to be updated later, no? In most cases did would be an ABI change. Almost never an acceptable thing to do. Segher