From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-472575-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 4456 invoked by alias); 9 Jan 2015 11:15:38 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 3951 invoked by uid 55); 9 Jan 2015 11:15:31 -0000
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/64410] gcc 25% slower than clang 3.5 for adding complex numbers
Date: Fri, 09 Jan 2015 11:15:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 4.9.2
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-64410-4-upCwQU7KFN@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-64410-4@http.gcc.gnu.org/bugzilla/>
References: <bug-64410-4@http.gcc.gnu.org/bugzilla/>
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: 2015-01/txt/msg00569.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64410

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jan  9 11:14:55 2015
New Revision: 219380

URL: https://gcc.gnu.org/viewcvs?rev=219380&root=gcc&view=rev
Log:
2015-01-09  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/64410
    * tree-ssa.c (non_rewritable_lvalue_p): Allow REALPART/IMAGPART_EXPR
    on the LHS.
    (execute_update_addresses_taken): Deal with that.
    * tree-ssa-forwprop.c (pass_forwprop::execute): Use component-wise
    loads/stores for complex variables.

    * g++.dg/vect/pr64410.cc: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/vect/pr64410.cc
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-forwprop.c
    trunk/gcc/tree-ssa.c