[Bug tree-optimization/26420] New: -ftree-vectorizer-verbose=1 prints unvectorized loops information

[Bug tree-optimization/26420] New: -ftree-vectorizer-verbose=1 prints unvectorized loops information

[rguenth at gcc dot gnu dot org]

tramp3d-v4.cpp:3740: note: vectorized 0 loops in function.

tramp3d-v4.cpp:3740: note: vectorized 0 loops in function.

tramp3d-v4.cpp:50941: note: vectorized 0 loops in function.

tramp3d-v4.cpp:3740: note: vectorized 0 loops in function.

tramp3d-v4.cpp:3740: note: vectorized 0 loops in function.

etc.

  if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS))
    fprintf (vect_dump, "vectorized %u loops in function.\n",
             num_vectorized_loops);

here we should check if num_vectorized_loops is >0 or verbosity level
includes REPORT_UNVECTORIZED_LOOPS.  Though even in this case the
note does not provide any useful information.


-- 
           Summary: -ftree-vectorizer-verbose=1 prints unvectorized loops
                    information
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26420

[Bug tree-optimization/26420] -ftree-vectorizer-verbose=1 prints unvectorized loops information

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-22 14:34 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |minor
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-22 14:34:10
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26420

[Bug tree-optimization/26420] -ftree-vectorizer-verbose=1 prints unvectorized loops information

[dorit at il dot ibm dot com]

------- Comment #2 from dorit at il dot ibm dot com  2006-02-26 11:01 -------
For -ftree-vectorizer-verbose=1 the vectorizer reports each loop that got
vectorized, and also the total number of loops that got vectorized, even if
that number is zero. If preferable, we can report that 0 loops got vectorized
only under -ftree-vectorizer-verbose=2, or higher. The patch below makes the
"vectorized 0 loops" be reported for verbosity level 2 and higher. Shall I
suggest the patch for mainline?

Index: tree-vectorizer.c
===================================================================
*** tree-vectorizer.c   (revision 111450)
--- tree-vectorizer.c   (working copy)
*************** vectorize_loops (struct loops *loops)
*** 2047,2053 ****
        num_vectorized_loops++;
      }

!   if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS))
      fprintf (vect_dump, "vectorized %u loops in function.\n",
             num_vectorized_loops);

--- 2047,2058 ----
        num_vectorized_loops++;
      }

!   if (num_vectorized_loops > 0
!       && vect_print_dump_info (REPORT_VECTORIZED_LOOPS))
!     fprintf (vect_dump, "vectorized %u loops in function.\n",
!            num_vectorized_loops);
!   else if (num_vectorized_loops == 0
!          && vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
      fprintf (vect_dump, "vectorized %u loops in function.\n",
             num_vectorized_loops);


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26420

[Bug tree-optimization/26420] -ftree-vectorizer-verbose=1 prints unvectorized loops information

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2007-03-05 10:57 -------
Subject: Bug 26420

Author: rguenth
Date: Mon Mar  5 10:57:09 2007
New Revision: 122544

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122544
Log:
2007-03-05  Richard Guenther  <rguenther@suse.de>
        Dorit Nuzman  <dorit@il.ibm.com>

        PR tree-optimization/26420
        * tree-vectorizer.c (vectorize_loops): Bail out early if there
        are no loops in the function.  Only print the number of
        vectorized loops if it is greater than zero or we are supposed
        to print information about unvectorized loops.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vectorizer.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26420

[Bug tree-optimization/26420] -ftree-vectorizer-verbose=1 prints unvectorized loops information

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2007-03-05 10:57 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26420