From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-465307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 10881 invoked by alias); 30 Oct 2014 10:37:57 -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 9719 invoked by uid 48); 30 Oct 2014 10:37:46 -0000
From: "venkataramanan.kumar at amd dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/63687] New: Dumps from RTL passes after LTO optimizations are not generated .
Date: Thu, 30 Oct 2014 10:38:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: driver
X-Bugzilla-Version: lto
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: venkataramanan.kumar at amd dot com
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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter
Message-ID: <bug-63687-4@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: 2014-10/txt/msg02322.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63687

            Bug ID: 63687
           Summary: Dumps from RTL passes after LTO optimizations are not
                    generated .
           Product: gcc
           Version: lto
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: venkataramanan.kumar at amd dot com

I tried to dump RTL passes when compiling aarch64-unknown-linux-gnu compiler
with -flto -O3. 

gcc version 5.0.0 20141030 

aarch64-unknown-linux-gnu-gcc -O3 -flto test1.c test.c -fdump-rtl-all-all
-save-temps -fdump-ipa-all-all


--test.c--
#include<stdio.h>
extern void fn(int);
extern int b;


void main()
{
        int a= 10;
        fn(a);
        printf("%d", b);
        return;
}
--test.c--

-- test1.c --
int b;
void fn(int x)
{
        if(x)
        {
                b = 10;
        }
}
-- test1.c --

I am seeing ipa pass dumps from optimizations done at LTO stage. But RTL dumps
are not dumped. RTL passes called after ltrans and code generated. But not able
to see those dumps.

If I am correct intra function SSA tree pass dumps are also not seen.