Re: [PATCH 0/5] dump_printf support for middle-end types

[David Malcolm <dmalcolm at redhat dot com>]

On Tue, 2018-07-31 at 14:50 +0200, Richard Biener wrote:
> On Fri, Jul 27, 2018 at 11:47 PM David Malcolm <dmalcolm@redhat.com>
> wrote:
> > 
> > This patch kit converts dump_print and dump_printf_loc from using
> > fprintf etc internally to using a new pretty-printer
> > based on pp_format, which supports formatting middle-end types.
> > 
> > In particular, the following codes are implemented (in addition
> > to the standard pretty_printer ones):
> > 
> >    %E: gimple *:
> >        Equivalent to: dump_gimple_expr (MSG_*, TDF_SLIM, stmt, 0)
> >    %G: gimple *:
> >        Equivalent to: dump_gimple_stmt (MSG_*, TDF_SLIM, stmt, 0)
> >    %T: tree:
> >        Equivalent to: dump_generic_expr (MSG_*, arg, TDF_SLIM).
> > 
> > Hence it becomes possible to convert e.g.:
> > 
> >   if (dump_enabled_p ())
> >     {
> >       dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
> >                        "not vectorized: different sized vector "
> >                        "types in statement, ");
> >       dump_generic_expr (MSG_MISSED_OPTIMIZATION, TDF_SLIM,
> > vectype);
> >       dump_printf (MSG_MISSED_OPTIMIZATION, " and ");
> >       dump_generic_expr (MSG_MISSED_OPTIMIZATION, TDF_SLIM,
> > nunits_vectype);
> >       dump_printf (MSG_MISSED_OPTIMIZATION, "\n");
> >     }
> >   return false;
> > 
> > into a single call to dump_printf_loc:
> > 
> >   if (dump_enabled_p ())
> >     dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
> >                      "not vectorized: different sized vector "
> >                      "types in statement, %T and %T\n",
> >                      vectype, nunits_vectype);
> >   return false;
> > 
> > Unlike regular pretty-printers, this captures metadata for the
> > formatted chunks as appropriate, so that when written out to a
> > JSON optimization record, the relevant parts of the message are
> > labelled by type, and by source location (so that
> > e.g. %G is entirely equivalent to using dump_gimple_stmt).
> > 
> > Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
> > 
> > OK for trunk?
> 
> Nice!  I'm somehow missing 3/5?  Will look into the other ones now.

Thanks.

FWIW, 3/5 was:
  "[PATCH 3/5] C++: clean up cp_printer"
     https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01766.html

which Jason has already approved (and I've committed as r263046, after
a fresh bootstrap&regrtest).

Dave

> Richard.
> 
> > I'm hoping to use this in a v3 of:
> >   "[PATCH 0/5] [RFC v2] Higher-level reporting of vectorization
> > problems"
> >      https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00446.html
> > where the above might become:
> >   return opt_result::failure_at (stmt,
> >                                  "not vectorized: different sized
> > vector "
> >                                  "types in statement, %T and %T\n",
> >                                  vectype, nunits_vectype);
> > where opt_result::failure_at would encapsulate the "false", and
> > capture an opt_problem * (when dumps are enabled), for the reasons
> > discussed in that other kit.
> > 
> > David Malcolm (5):
> >   Simplify dump_context by adding a dump_loc member function
> >   dumpfile.c: eliminate special-casing of dump_file/alt_dump_file
> >   C++: clean up cp_printer
> >   c-family: clean up the data tables in c-format.c
> >   Formatted printing for dump_* in the middle-end
> > 
> >  gcc/c-family/c-format.c                   |  159 +++--
> >  gcc/c-family/c-format.h                   |    1 +
> >  gcc/cp/error.c                            |   46 +-
> >  gcc/dump-context.h                        |   25 +-
> >  gcc/dumpfile.c                            | 1011
> > ++++++++++++++++++++++-------
> >  gcc/dumpfile.h                            |   54 +-
> >  gcc/optinfo-emit-json.cc                  |    2 +-
> >  gcc/optinfo.cc                            |  135 +---
> >  gcc/optinfo.h                             |   38 +-
> >  gcc/testsuite/gcc.dg/format/gcc_diag-1.c  |   19 +-
> >  gcc/testsuite/gcc.dg/format/gcc_diag-10.c |   33 +-
> >  11 files changed, 998 insertions(+), 525 deletions(-)
> > 
> > --
> > 1.8.5.3
> >