From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18397 invoked by alias); 28 Oct 2014 10:50:24 -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 18314 invoked by uid 48); 28 Oct 2014 10:50:19 -0000 From: "ramana at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/61915] [AArch64] High amounts of GP to FP register moves using LRA on AArch64 - Improve Generic register_move_cost and memory_move_cost Date: Tue, 28 Oct 2014 10:51:00 -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: 5.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: ramana at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: ramana at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: short_desc 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: 2014-10/txt/msg02143.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61915 Ramana Radhakrishnan changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[AArch64] High amounts of |[AArch64] High amounts of |GP to FP register moves |GP to FP register moves |using LRA on AArch64 |using LRA on AArch64 - | |Improve Generic | |register_move_cost and | |memory_move_cost --- Comment #19 from Ramana Radhakrishnan --- To my mind it seems like 407 fmoves is just a bit too berserk and regardless of how efficient your core is, there is no point in having so many moves back and forth.