From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-help-return-51659-listarch-gcc-help=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 10923 invoked by alias); 30 Nov 2012 04:02:37 -0000
Received: (qmail 10910 invoked by uid 22791); 30 Nov 2012 04:02:35 -0000
X-SWARE-Spam-Status: No, hits=-5.5 required=5.0	tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE
X-Spam-Check-By: sourceware.org
Received: from mail-ea0-f175.google.com (HELO mail-ea0-f175.google.com) (209.85.215.175)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 30 Nov 2012 04:00:10 +0000
Received: by mail-ea0-f175.google.com with SMTP id h11so23503eaa.20        for <gcc-help@gcc.gnu.org>; Thu, 29 Nov 2012 20:00:09 -0800 (PST)
MIME-Version: 1.0
Received: by 10.14.207.6 with SMTP id m6mr46587906eeo.10.1354248009344; Thu, 29 Nov 2012 20:00:09 -0800 (PST)
Received: by 10.223.18.14 with HTTP; Thu, 29 Nov 2012 20:00:09 -0800 (PST)
In-Reply-To: <92FF49B3-1180-4E33-BE04-ADE404BE8DC0@codesourcery.com>
References: <CAKuVEhDXXA24veEaWNhek4v1N2ZYsw31dQ1KP8+BLcMudhZCEA@mail.gmail.com>	<06230AFE-EC8F-4F19-BFCF-E7D1D6DF6CBE@codesourcery.com>	<CAKuVEhCq5RHDvKziTX9kaXo8jrT+JeHNXrWnJe+n8JTRMqRBDg@mail.gmail.com>	<92FF49B3-1180-4E33-BE04-ADE404BE8DC0@codesourcery.com>
Date: Fri, 30 Nov 2012 04:02:00 -0000
Message-ID: <CAKuVEhDMN8_6Q5qzfsjKh+tpk8TQ29AaWM8bwWs=K5sAmb7dnw@mail.gmail.com>
Subject: Re: loop-unrolling in gcc-4.6.2
From: naga raj <gnuuser.raj@gmail.com>
To: Maxim Kuvyrkov <maxim@codesourcery.com>
Cc: gcc-help <gcc-help@gcc.gnu.org>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-IsSubscribed: yes
Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-help.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-help/>
List-Post: <mailto:gcc-help@gcc.gnu.org>
List-Help: <mailto:gcc-help-help@gcc.gnu.org>
Sender: gcc-help-owner@gcc.gnu.org
X-SW-Source: 2012-11/txt/msg00217.txt.bz2

On Fri, Nov 30, 2012 at 7:42 AM, Maxim Kuvyrkov <maxim@codesourcery.com> wr=
ote:
> On 26/11/2012, at 9:31 PM, naga raj wrote:
>
>> On Mon, Nov 26, 2012 at 12:13 PM, Maxim Kuvyrkov <maxim@codesourcery.com=
> wrote:
>>> --param
>>
>> Thanks Maxim Kuvyrkov for your inputs. I have tried all the flags that
>> you have suggested but they didn't help.
>>
>> As you suggested I will investigate where this loop-unrolling is
>> blocked but are there any specific areas to be look in to the target
>> regarding this??
>
> I doubt you can productively troubleshoot this without a compiler built f=
or debugging (i.e., non-boostrapped built with "-O0 -g").  When you have th=
at, you can start stepping through loop optimizers and check why they are d=
eciding not to unroll your loops.
>
> --
> Maxim Kuvyrkov
> CodeSourcery / Mentor Graphics
>

Thanks Maxim. I will debug it as you suggested.