From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5800 invoked by alias); 23 Jul 2013 20:29:00 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 5683 invoked by uid 48); 23 Jul 2013 20:28:56 -0000 From: "wschmidt at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/57949] [powerpc64] Structure parameter alignment issue with vector extensions Date: Tue, 23 Jul 2013 20:29:00 -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: 4.9.0 X-Bugzilla-Keywords: ABI, wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: wschmidt at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-07/txt/msg01087.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57949 Bill Schmidt changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |joseph at codesourcery dot com --- Comment #5 from Bill Schmidt --- Joseph, adding you for any comments you might have relative to Freescale impacts. Summarizing some offline discussion: * This would apply to long double, __int128, and (probably) _Decimal128 as well. The fix is the same in all cases. * There may be some oddities for _Decimal128, as the need to be in even/odd register pairs may conflict with alignment in storage. The 64-bit ABI does not currently specify the alignment for _Decimal128 so we'll need to check the code to see what's the case in practice.