From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Renc=C5=suse.de=matz@sourceware.org>
Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c])
	by sourceware.org (Postfix) with ESMTPS id B45E03858D20
	for <gcc-patches@gcc.gnu.org>; Tue, 11 Jul 2023 15:34:59 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org B45E03858D20
Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de
Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de
Received: from relay2.suse.de (relay2.suse.de [149.44.160.134])
	by smtp-out1.suse.de (Postfix) with ESMTP id B910A22767;
	Tue, 11 Jul 2023 15:34:58 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa;
	t=1689089698; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:
	 mime-version:mime-version:content-type:content-type:
	 in-reply-to:in-reply-to:references:references;
	bh=UZnwBcSdzQIq7s70e8b+lZ42QZdMsse4nitgKjKMNtY=;
	b=ItqGLLj7VFTv4RiZYQVT9sXnd3/lnXUgr9nOiOWy6HyQc+1uTZLmQTxQTpCzkiXwl3NfXp
	p9joYC4rtc2XtI1S3cVwGITBbSH59A5+aM8Vh5qJn316r30xe5tWlC4oXxcLVgxN3TGGHj
	OxobMuh0QOTLTzIXoGYOMLE64sWQrcc=
DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;
	s=susede2_ed25519; t=1689089698;
	h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:
	 mime-version:mime-version:content-type:content-type:
	 in-reply-to:in-reply-to:references:references;
	bh=UZnwBcSdzQIq7s70e8b+lZ42QZdMsse4nitgKjKMNtY=;
	b=VHU64C7nrZm2jFnFqXn/O2cvIhDW7HRNk3xc+9poQntXbCi5m8gGgc9JwS2GfstnanE47M
	lCrFOb8Nze/1FBCQ==
Received: from wotan.suse.de (wotan.suse.de [10.160.0.1])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by relay2.suse.de (Postfix) with ESMTPS id AA1982C142;
	Tue, 11 Jul 2023 15:34:58 +0000 (UTC)
Received: by wotan.suse.de (Postfix, from userid 10510)
	id 9F7FE67F5; Tue, 11 Jul 2023 15:34:58 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1])
	by wotan.suse.de (Postfix) with ESMTP id 9E4556610;
	Tue, 11 Jul 2023 15:34:58 +0000 (UTC)
Date: Tue, 11 Jul 2023 15:34:58 +0000 (UTC)
From: Michael Matz <matz@suse.de>
To: Alexander Monakov <amonakov@ispras.ru>
cc: gcc-patches@gcc.gnu.org, Jan Hubicka <hubicka@ucw.cz>
Subject: Re: [x86-64] RFC: Add nosse abi attribute
In-Reply-To: <1222e0de-8260-9ba3-44fb-ec801fc3a4e2@ispras.ru>
Message-ID: <alpine.LSU.2.20.2307111533580.13548@wotan.suse.de>
References: <alpine.LSU.2.20.2307101549210.13548@wotan.suse.de> <a4cb9f8e-17f9-a9c1-6aaa-ff5999ce6f02@ispras.ru> <alpine.LSU.2.20.2307111443120.13548@wotan.suse.de> <1222e0de-8260-9ba3-44fb-ec801fc3a4e2@ispras.ru>
User-Agent: Alpine 2.20 (LSU 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
X-Spam-Status: No, score=-3.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org
List-Id: <gcc-patches.gcc.gnu.org>

Hey,

On Tue, 11 Jul 2023, Alexander Monakov via Gcc-patches wrote:

> > > > * nosseclobber: claims (and ensures) that xmm8-15 aren't clobbered
> > > 
> > > This is the weak/active form; I'd suggest "preserve_high_sse".
> > 
> > But it preserves only the low parts :-)  You swapped the two in your 
> > mind when writing the reply?
> 
> Ahhh. By "high SSE" I mean the high-numbered SSE regs, i.e. xmm8-15, not
> the higher halves of (unspecified subset of) SSE regs.

Ah, gotcha :-)  It just shows that all these names are confusing.  Maybe 
I'll just go with "attribute1" and "attribute2" and rely on docu.  (SCNR)


Ciao,
Michael.