From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8842 invoked by alias); 30 May 2010 00:32:06 -0000 Received: (qmail 8817 invoked by uid 48); 30 May 2010 00:31:56 -0000 Date: Sun, 30 May 2010 00:32:00 -0000 Subject: [Bug middle-end/44329] New: vectorization loss in gas_dyn X-Bugzilla-Reason: CC Message-ID: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "howarth at nitro dot med dot uc dot edu" 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 X-SW-Source: 2010-05/txt/msg03247.txt.bz2 Currently gcc trunk is showing significant loss of vectorization at r160038 for the gas_dyn.f90 benchmark... bash-3.2$ gfortran -O3 -ffast-math -ftree-vectorizer-verbose=2 gas_dyn.f90 &> gcc46.txt bash-3.2$ grep "LOOP VECTORIZED" gcc46.txt | wc 29 116 1177 compared to... bash-3.2$ gfortran -O3 -ffast-math -ftree-vectorizer-verbose=2 gas_dyn.f90 &> gcc46.txt bash-3.2$ grep "LOOP VECTORIZED" gcc46.txt | wc 41 164 1666 at r159941. -- Summary: vectorization loss in gas_dyn Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: howarth at nitro dot med dot uc dot edu GCC build triplet: x86_64-apple-darwin10 GCC host triplet: x86_64-apple-darwin10 GCC target triplet: x86_64-apple-darwin10 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44329