Re: [PATCH] Make vectorizer dumps more comparable

[Richard Guenther <rguenther at suse dot de>]

On Thu, 1 Sep 2011, Ira Rosen wrote:

> 
> 
> gcc-patches-owner@gcc.gnu.org wrote on 24/08/2011 02:20:50 PM:
> >
> > This avoids the file/location clutter in front of each line
> > in the vectorizer dump.  While this is useful for people
> > requesting -fvectorizer-verbose=N in dump files this makes
> > you unable to compare dumps for testcases on a branch and trunk.
> > It also makes lines excessively long because the testsuite
> > filename paths are so long.  Very annoying.
> >
> > (I'd argue also that -fvectorizer-verbose=N dumps to the dump
> > file if available and not always to stderr is bogus, but well ...)
> >
> > This patch has made my life a lot easier debugging the data dependence
> > stuff.
> >
> > Bootstrapped and tested on x86_64-unknown-linux-gnu, installed on trunk.
> >
> > Richard.
> >
> > 2011-08-24  Richard Guenther  <rguenther@suse.de>
> >
> >    * tree-vectorizer.c (vect_print_dump_info): Avoid the
> >    file and location clutter when dumping to dump files.
> 
> 
> IMO it's a bad idea. It's now impossible to find anything when compiling a
> big file. How about only removing the file name?

How about, as Micha suggested, print the location of the loop
we currently investigate from vectorize_loops () where we
call find_loop_location () instead?

Richard.

> Index: tree-vectorizer.c
> ===================================================================
> --- tree-vectorizer.c   (revision 178374)
> +++ tree-vectorizer.c   (working copy)
> @@ -149,16 +149,12 @@ vect_print_dump_info (enum vect_verbosit
>    if (!current_function_decl || !vect_dump)
>      return false;
> 
> -  if (dump_file)
> -    fprintf (vect_dump, "\n");
> -
> -  else if (vect_location == UNKNOWN_LOC)
> -    fprintf (vect_dump, "\n%s:%d: note: ",
> -            DECL_SOURCE_FILE (current_function_decl),
> +  if (vect_location == UNKNOWN_LOC)
> +    fprintf (vect_dump, "\nline %d: ",
>              DECL_SOURCE_LINE (current_function_decl));
>    else
> -    fprintf (vect_dump, "\n%s:%d: note: ",
> -            LOC_FILE (vect_location), LOC_LINE (vect_location));
> +    fprintf (vect_dump, "\nline %d: ",
> +            LOC_LINE (vect_location));
> 
>    return true;
>  }
> 
> Ira
> 
> >
> > Index: gcc/tree-vectorizer.c
> > ===================================================================
> > --- gcc/tree-vectorizer.c   (revision 178028)
> > +++ gcc/tree-vectorizer.c   (working copy)
> > @@ -149,7 +149,10 @@ vect_print_dump_info (enum vect_verbosit
> >    if (!current_function_decl || !vect_dump)
> >      return false;
> >
> > -  if (vect_location == UNKNOWN_LOC)
> > +  if (dump_file)
> > +    fprintf (vect_dump, "\n");
> > +
> > +  else if (vect_location == UNKNOWN_LOC)
> >      fprintf (vect_dump, "\n%s:%d: note: ",
> >          DECL_SOURCE_FILE (current_function_decl),
> >          DECL_SOURCE_LINE (current_function_decl));
> >
> 
> 

-- 
Richard Guenther <rguenther@suse.de>
SUSE / SUSE Labs
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