[Bug tree-optimization/23475] New: Frequences are not updated for empty loop removal

[Bug tree-optimization/23475] New: Frequences are not updated for empty loop removal

[pinskia at gcc dot gnu dot org]

Testcase:
int f(int t)
{
  int i;
  if(t)
    for(i = 0 ;i<100000;i++)
      ;
   else
    return 2;
  return 1;
}

----
in the tree dump:
<bb 0>:
  if (t_3 != 0) goto <L1>; else goto <L6>;

Invalid sum of incoming frequencies 1100, should be 10000
  # i_6 = PHI <0(0)>;
<L1>:;
  i_8 = i_6 + 1;

Invalid sum of incoming frequencies 10542, should be 1642
  # D.1276_2 = PHI <2(0), 1(1)>;
<L6>:;
  return D.1276_2;

--- in final_cleanup:
<bb 0>:
  if (t != 0) goto <L1>; else goto <L14>;

<L14>:;
  D.1276 = 2;
  goto <bb 3> (<L6>);

Invalid sum of incoming frequencies 1100, should be 10000
<L1>:;
  D.1276 = 1;

Invalid sum of incoming frequencies 10542, should be 1642
<L6>:;
  return D.1276;

-- 
           Summary: Frequences are not updated for empty loop removal
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rakdver at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-19 06:01 -------
I should note I found this while looking into PR 23358.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[rakdver at gcc dot gnu dot org]

------- Additional Comments From rakdver at gcc dot gnu dot org  2005-08-24 11:48 -------
I am working on that. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rakdver at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-08-24 11:48:17
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[rakdver at gcc dot gnu dot org]

------- Additional Comments From rakdver at gcc dot gnu dot org  2005-08-27 08:05 -------
Patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2005-
                   |                            |08/msg01619.html


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-29 07:13 -------
Subject: Bug 23475

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rakdver@gcc.gnu.org	2005-08-29 07:13:07

Modified files:
	gcc            : ChangeLog tree-ssa-loop-ivcanon.c 

Log message:
	PR tree-optimization/23475
	* tree-ssa-loop-ivcanon.c (remove_empty_loop): Update frequencies
	and counts.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9846&r2=2.9847
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-ivcanon.c.diff?cvsroot=gcc&r1=2.20&r2=2.21



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[rakdver at gcc dot gnu dot org]

------- Additional Comments From rakdver at gcc dot gnu dot org  2005-08-29 07:18 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475

[Bug tree-optimization/23475] Frequences are not updated for empty loop removal

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23475