From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21040 invoked by alias); 7 Apr 2014 13:33:18 -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 20989 invoked by uid 48); 7 Apr 2014 13:33:13 -0000 From: "gjl at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/60300] [avr] Suboptimal stack pointer manipulation for frame setup Date: Mon, 07 Apr 2014 13:33:00 -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: 4.8.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: gjl 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: cf_gcctarget 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: 2014-04/txt/msg00469.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60300 Georg-Johann Lay changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |avr --- Comment #2 from Georg-Johann Lay --- AFAIK the code cares for reasonably fast execution, even when optimizing for size. This is because the code is for interrupt service routine (ISR) prologue. RCALL is quite slow.