[google] Suppress FDO-use related notes/warnings (issue5294043)

Got a bad patch for profile. Thanks to David for catching this.
Here is the correct one:

2011-10-18   Rong Xu  <xur@google.com>

       * gcc/common.opt (fprofile-use-verbose): New flag.
       * gcc/value-prof.c (check_ic_counter): guard notes by
         flag_profile_use_verbose.
         (find_func_by_funcdef_no): Ditto.
         (check_ic_target): Ditto.
         (check_counter): Ditto.
         (check_ic_counter): Ditto.
       * gcc/mcf.c (find_minimum_cost_flow): Ditto.
       * gcc/profile.c (read_profile_edge_counts):
         (compute_branch_probabilities):
       * gcc/coverage.c (read_counts_file): guard LIPO
         warnings by flag_ripa_verbose.
         (get_coverage_counts): guard notes
         by flag_profile_use_verbose; make warning
         under OPT_Wcoverage_mismatch.
       * gcc/tree-profile.c: (gimple_gen_reusedist): Ditto.
         (maybe_issue_profile_use_note): Ditto.
         (optimize_reusedist): Ditto.
       * gcc/testsuite/gcc.dg/pr32773.c: add -fprofile-use-verbose.
       * gcc/testsuite/gcc.dg/pr40209.c: Ditto.
       * gcc/testsuite/gcc.dg/pr26570.c: Ditto.
       * gcc/testsuite/g++.dg/tree-ssa/dom-invalid.C: Ditto.

 }
@@ -1214,7 +1217,7 @@

  reusedist_from_counters (counters, &rd);

-  if (rd.count)
+  if (flag_profile_use_verbose && rd.count)
    inform (locus, "reuse distance counters for arg %d: %lld %lld %lld %lld",
            arg, (long long int)rd.mean_dist, (long long int)rd.mean_size,
            (long long int)rd.count, (long long int)rd.dist_x_size);
@@ -1283,9 +1286,10 @@
  subst_decl = reusedist_get_nt_decl (gimple_call_fndecl (stmt), subst,
                                      suffix);
  gimple_call_set_fndecl (stmt, subst_decl);
-  inform (locus, "replaced %qs with non-temporal %qs",
-          subst->original_name,
-          IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (subst_decl)));
+  if (flag_profile_use_verbose)
+    inform (locus, "replaced %qs with non-temporal %qs",
+            subst->original_name,
+            IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (subst_decl)));
 }

 /* Replace string operations with equivalent nontemporal, when profitable.  */
@@ -1323,11 +1327,13 @@

  if (counter_index != n_counters)
    {
-      warning (0, "coverage mismatch for reuse distance counters "
+      warning (OPT_Wcoverage_mismatch,
+               "coverage mismatch for reuse distance counters "
               "in function %qs", IDENTIFIER_POINTER
               (DECL_ASSEMBLER_NAME (current_function_decl)));
-      inform (input_location, "number of counters is %u instead of %u",
-              n_counters, counter_index);
+      if (flag_profile_use_verbose)
+        inform (input_location, "number of counters is %u instead of %u",
+                n_counters, counter_index);
    }
 }

-Rong

On Tue, Oct 18, 2011 at 5:06 PM, Xinliang David Li <davidxl@google.com> wrote:
>
> On Tue, Oct 18, 2011 at 3:48 PM, Rong Xu <xur@google.com> wrote:
> > Suppress verbose notes/warnings printed in FDO-use compilation.
> > (1) Add option -fprofile-use-verbose.
>
> Gcc currently does not emit informational messages on high level
> transformations such as inlining, value profiling transformations (ic
> promotion info messages are emitted in lipo mode in google/main), loop
> peeling and unrolling, and other loop opts. I can see those are very
> useful for triaging performance regressions etc, but turning those on
> would be too verbose for non-power users and can be annoying. They
> (when introduced in the future) should be guarded. I can see they
> should be guarded using the same option and possibly with a verbose
> level. Something like:
>
> -fopt-info=<1,2,3>
>
> For now, a nonparameterized option should be good enough.
>
> (similarly, -fopt-report can be used to dump optimization report which
> is more structured -- e.g, grouped via optimizations, not functions).
>
> There are some unrelated changes (e.g, histogram free etc) which
> should be committed separately.
>
>
> David
>
> > When this option is on, FDO-use
> > compilation prints out all the notes as that of today. When this
> > option is off (the default), all notes are suppressed.
> > (2) Make several unconditional warnings under OPT_Wcoverage_mismatch.
> > So that they can be turned off via -Wno-coverage-mismatch.
> > (3) Make several unconditional warnings for LIPO under flag_ripa_verbose.
> > (can be turned on via -fripa-verbose).
>
>
>
> >
> > This patch is for google-main only.
> >
> > Tested with bootstrap and regression tests.
> >
> > 2011-10-18   Rong Xu  <xur@google.com>
> >
> >        * gcc/common.opt (fprofile-use-verbose): New flag.
> >        * gcc/value-prof.c (check_ic_counter): guard notes by
> >          flag_profile_use_verbose.
> >          (find_func_by_funcdef_no): Ditto.
> >          (check_ic_target): Ditto.
> >          (check_counter): Ditto.
> >          (check_ic_counter): Ditto.
> >        * gcc/mcf.c (find_minimum_cost_flow): Ditto.
> >        * gcc/profile.c (read_profile_edge_counts):
> >          (compute_branch_probabilities):
> >        * gcc/coverage.c (read_counts_file): guard LIPO
> >          warnings by flag_ripa_verbose.
> >          (get_coverage_counts): guard notes
> >          by flag_profile_use_verbose; make warning
> >          under OPT_Wcoverage_mismatch.
> >        * gcc/tree-profile.c: (gimple_gen_reusedist): Ditto.
> >          (maybe_issue_profile_use_note): Ditto.
> >          (optimize_reusedist): Ditto.
> >        * gcc/testsuite/gcc.dg/pr32773.c: add -fprofile-use-verbose.
> >        * gcc/testsuite/gcc.dg/pr40209.c: Ditto.
> >        * gcc/testsuite/gcc.dg/pr26570.c: Ditto.
> >        * gcc/testsuite/g++.dg/tree-ssa/dom-invalid.C: Ditto.
> >
> > Index: gcc/value-prof.c
> > ===================================================================
> > --- gcc/value-prof.c    (revision 180106)
> > +++ gcc/value-prof.c    (working copy)
> > @@ -472,9 +472,10 @@
> >               : DECL_SOURCE_LOCATION (current_function_decl);
> >       if (flag_profile_correction)
> >         {
> > -         inform (locus, "correcting inconsistent value profile: "
> > -                 "%s profiler overall count (%d) does not match BB count "
> > -                  "(%d)", name, (int)*all, (int)bb_count);
> > +          if (flag_profile_use_verbose)
> > +            inform (locus, "correcting inconsistent value profile: %s "
> > +                   "profiler overall count (%d) does not match BB count "
> > +                    "(%d)", name, (int)*all, (int)bb_count);
> >          *all = bb_count;
> >          if (*count > *all)
> >             *count = *all;
> > @@ -510,33 +511,42 @@
> >   location_t locus;
> >   if (*count1 > all && flag_profile_correction)
> >     {
> > -      locus = (stmt != NULL)
> > -              ? gimple_location (stmt)
> > -              : DECL_SOURCE_LOCATION (current_function_decl);
> > -      inform (locus, "Correcting inconsistent value profile: "
> > -              "ic (topn) profiler top target count (%ld) exceeds "
> > -             "BB count (%ld)", (long)*count1, (long)all);
> > +      if (flag_profile_use_verbose)
> > +        {
> > +          locus = (stmt != NULL)
> > +                  ? gimple_location (stmt)
> > +                  : DECL_SOURCE_LOCATION (current_function_decl);
> > +          inform (locus, "Correcting inconsistent value profile: "
> > +                  "ic (topn) profiler top target count (%ld) exceeds "
> > +                  "BB count (%ld)", (long)*count1, (long)all);
> > +        }
> >       *count1 = all;
> >     }
> >   if (*count2 > all && flag_profile_correction)
> >     {
> > -      locus = (stmt != NULL)
> > -              ? gimple_location (stmt)
> > -              : DECL_SOURCE_LOCATION (current_function_decl);
> > -      inform (locus, "Correcting inconsistent value profile: "
> > -              "ic (topn) profiler second target count (%ld) exceeds "
> > -             "BB count (%ld)", (long)*count2, (long)all);
> > +      if (flag_profile_use_verbose)
> > +        {
> > +          locus = (stmt != NULL)
> > +                  ? gimple_location (stmt)
> > +                  : DECL_SOURCE_LOCATION (current_function_decl);
> > +          inform (locus, "Correcting inconsistent value profile: "
> > +                  "ic (topn) profiler second target count (%ld) exceeds "
> > +                 "BB count (%ld)", (long)*count2, (long)all);
> > +        }
> >       *count2 = all;
> >     }
> >
> >   if (*count2 > *count1)
> >     {
> > -      locus = (stmt != NULL)
> > -              ? gimple_location (stmt)
> > -              : DECL_SOURCE_LOCATION (current_function_decl);
> > -      inform (locus, "Corrupted topn ic value profile: "
> > -             "first target count (%ld) is less than the second "
> > -             "target count (%ld)", (long)*count1, (long)*count2);
> > +      if (flag_profile_use_verbose)
> > +        {
> > +          locus = (stmt != NULL)
> > +                  ? gimple_location (stmt)
> > +                  : DECL_SOURCE_LOCATION (current_function_decl);
> > +          inform (locus, "Corrupted topn ic value profile: "
> > +                 "first target count (%ld) is less than the second "
> > +                 "target count (%ld)", (long)*count1, (long)*count2);
> > +        }
> >       return true;
> >     }
> >
> > @@ -548,12 +558,16 @@
> >        *count2 = all - *count1;
> >       else
> >        {
> > -         locus = (stmt != NULL)
> > -           ? gimple_location (stmt)
> > -           : DECL_SOURCE_LOCATION (current_function_decl);
> > -         inform (locus, "Corrupted topn ic value profile: top two targets's"
> > -                 " total count (%ld) exceeds bb count (%ld)",
> > -                 (long)(*count1 + *count2), (long)all);
> > +          if (flag_profile_use_verbose)
> > +            {
> > +             locus = (stmt != NULL)
> > +               ? gimple_location (stmt)
> > +               : DECL_SOURCE_LOCATION (current_function_decl);
> > +             inform (locus,
> > +                      "Corrupted topn ic value profile: top two targets's"
> > +                      " total count (%ld) exceeds bb count (%ld)",
> > +                      (long)(*count1 + *count2), (long)all);
> > +            }
> >          return true;
> >        }
> >     }
> > @@ -1177,8 +1191,11 @@
> >                                       func_id) == NULL)
> >     {
> >       if (flag_profile_correction)
> > -        inform (DECL_SOURCE_LOCATION (current_function_decl),
> > +        {
> > +          if (flag_profile_use_verbose)
> > +            inform (DECL_SOURCE_LOCATION (current_function_decl),
> >                 "Inconsistent profile: indirect call target (%d) does not exist", func_id);
> > +        }
> >       else
> >         error ("Inconsistent profile: indirect call target (%d) does not exist", func_id);
> >
> > @@ -1308,8 +1325,9 @@
> >      return true;
> >
> >    locus =  gimple_location (call_stmt);
> > -   inform (locus, "Skipping target %s with mismatching types for icall ",
> > -           cgraph_node_name (target));
> > +   if (flag_profile_use_verbose)
> > +     inform (locus, "Skipping target %s with mismatching types for icall ",
> > +             cgraph_node_name (target));
> >    return false;
> >  }
> >
> > Index: gcc/mcf.c
> > ===================================================================
> > --- gcc/mcf.c   (revision 180106)
> > +++ gcc/mcf.c   (working copy)
> > @@ -1442,7 +1442,8 @@
> >       if (iteration > MAX_ITER (fixup_graph->num_vertices,
> >                                 fixup_graph->num_edges))
> >        {
> > -         inform (DECL_SOURCE_LOCATION (current_function_decl),
> > +          if (flag_profile_use_verbose)
> > +            inform (DECL_SOURCE_LOCATION (current_function_decl),
> >                  "Exiting profile correction early to avoid excessive "
> >                  "compile time");
> >          break;
> > Index: gcc/testsuite/gcc.dg/pr32773.c
> > ===================================================================
> > --- gcc/testsuite/gcc.dg/pr32773.c      (revision 180106)
> > +++ gcc/testsuite/gcc.dg/pr32773.c      (working copy)
> > @@ -1,6 +1,6 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-O -fprofile-use" } */
> > -/* { dg-options "-O -m4 -fprofile-use" { target sh-*-* } } */
> > +/* { dg-options "-O -fprofile-use -fprofile-use-verbose" } */
> > +/* { dg-options "-O -m4 -fprofile-use -fprofile-use-verbose" { target sh-*-* } } */
> >
> >  void foo (int *p)
> >  {
> > Index: gcc/testsuite/gcc.dg/pr40209.c
> > ===================================================================
> > --- gcc/testsuite/gcc.dg/pr40209.c      (revision 180106)
> > +++ gcc/testsuite/gcc.dg/pr40209.c      (working copy)
> > @@ -1,5 +1,5 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-O2 -fprofile-use" } */
> > +/* { dg-options "-O2 -fprofile-use -fprofile-use-verbose" } */
> >
> >  void process(const char *s);
> >
> > Index: gcc/testsuite/gcc.dg/pr26570.c
> > ===================================================================
> > --- gcc/testsuite/gcc.dg/pr26570.c      (revision 180106)
> > +++ gcc/testsuite/gcc.dg/pr26570.c      (working copy)
> > @@ -1,5 +1,5 @@
> >  /* { dg-do compile } */
> > -/* { dg-options "-O2 -fprofile-generate -fprofile-use" } */
> > +/* { dg-options "-O2 -fprofile-generate -fprofile-use -fprofile-use-verbose" } */
> >
> >  unsigned test (unsigned a, unsigned b)
> >  {
> > Index: gcc/testsuite/g++.dg/tree-ssa/dom-invalid.C
> > ===================================================================
> > --- gcc/testsuite/g++.dg/tree-ssa/dom-invalid.C (revision 180106)
> > +++ gcc/testsuite/g++.dg/tree-ssa/dom-invalid.C (working copy)
> > @@ -1,7 +1,7 @@
> >  // PR tree-optimization/39557
> >  // invalid post-dom info leads to infinite loop
> >  // { dg-do run }
> > -// { dg-options "-Wall -fno-exceptions -O2 -fprofile-use -fno-rtti" }
> > +// { dg-options "-Wall -fno-exceptions -O2 -fprofile-use -fprofile-use-verbose -fno-rtti" }
> >
> >  struct C
> >  {
> > Index: gcc/profile.c
> > ===================================================================
> > --- gcc/profile.c       (revision 180106)
> > +++ gcc/profile.c       (working copy)
> > @@ -414,7 +414,7 @@
> >                    if (flag_profile_correction)
> >                      {
> >                        static bool informed = 0;
> > -                       if (!informed)
> > +                       if (flag_profile_use_verbose && !informed)
> >                          inform (input_location,
> >                                  "corrupted profile info: edge count exceeds maximal count");
> >                        informed = 1;
> > @@ -635,7 +635,7 @@
> >        {
> >          /* Inconsistency detected. Make it flow-consistent. */
> >          static int informed = 0;
> > -         if (informed == 0)
> > +         if (flag_profile_use_verbose && informed == 0)
> >            {
> >              informed = 1;
> >              inform (input_location, "correcting inconsistent profile data");
> > @@ -754,7 +754,8 @@
> >     }
> >   counts_to_freqs ();
> >   profile_status = PROFILE_READ;
> > -  compute_function_frequency ();
> > +  /* TODO: investigate performance regression with this.
> > +     compute_function_frequency ();  */
> >
> >   if (dump_file)
> >     {
> > @@ -837,7 +838,8 @@
> >     }
> >
> >   for (t = 0; t < GCOV_N_VALUE_COUNTERS; t++)
> > -    free (histogram_counts[t]);
> > +    if (histogram_counts[t])
> > +      free (histogram_counts[t]);
> >  }
> >
> >  /* The entry basic block will be moved around so that it has index=1,
> > @@ -861,7 +863,7 @@
> >       return;
> >     }
> >
> > -  name_differs = !prev_file_name || filename_cmp (file_name, prev_file_name);
> > +  name_differs = !prev_file_name || strcmp (file_name, prev_file_name);
> >   line_differs = prev_line != line;
> >
> >   if (name_differs || line_differs)
> > @@ -1140,14 +1142,17 @@
> >   /* Line numbers.  */
> >   if (coverage_begin_output (lineno_checksum, cfg_checksum))
> >     {
> > +      gcov_position_t offset;
> > +
> >       /* Initialize the output.  */
> >       output_location (NULL, 0, NULL, NULL);
> >
> >       FOR_EACH_BB (bb)
> >        {
> >          gimple_stmt_iterator gsi;
> > -         gcov_position_t offset = 0;
> >
> > +         offset = 0;
> > +
> >          if (bb == ENTRY_BLOCK_PTR->next_bb)
> >            {
> >              expanded_location curr_location =
> > @@ -1164,14 +1169,15 @@
> >                                 &offset, bb);
> >            }
> >
> > -         /* Notice GOTO expressions eliminated while constructing the CFG.  */
> > +         /* Notice GOTO expressions we eliminated while constructing the
> > +            CFG.  */
> >          if (single_succ_p (bb)
> >              && single_succ_edge (bb)->goto_locus != UNKNOWN_LOCATION)
> >            {
> > -             expanded_location curr_location
> > -               = expand_location (single_succ_edge (bb)->goto_locus);
> > -             output_location (curr_location.file, curr_location.line,
> > -                              &offset, bb);
> > +             location_t curr_location = single_succ_edge (bb)->goto_locus;
> > +             /* ??? The FILE/LINE API is inconsistent for these cases.  */
> > +             output_location (LOCATION_FILE (curr_location),
> > +                              LOCATION_LINE (curr_location), &offset, bb);
> >            }
> >
> >          if (offset)
> > Index: gcc/coverage.c
> > ===================================================================
> > --- gcc/coverage.c      (revision 180106)
> > +++ gcc/coverage.c      (working copy)
> > @@ -575,29 +575,47 @@
> >              int fd;
> >              char *aux_da_filename = get_da_file_name (mod_info->da_filename);
> >               gcc_assert (!mod_info->is_primary);
> > -             if (pointer_set_insert (modset, (void *)(size_t)mod_info->ident))
> > -               inform (input_location, "Not importing %s: already imported",
> > -                       mod_info->source_filename);
> > -             else if ((module_infos[0]->lang & GCOV_MODULE_LANG_MASK) !=
> > -                      (mod_info->lang & GCOV_MODULE_LANG_MASK))
> > -               inform (input_location, "Not importing %s: source language"
> > -                       " different from primary module's source language",
> > -                       mod_info->source_filename);
> > -             else if (module_infos_read == max_group)
> > -               inform (input_location, "Not importing %s: maximum group size"
> > -                       " reached", mod_info->source_filename);
> > -             else if (incompatible_cl_args (module_infos[0], mod_info))
> > -               inform (input_location, "Not importing %s: command-line"
> > -                       " arguments not compatible with primary module",
> > -                       mod_info->source_filename);
> > -             else if ((fd = open (aux_da_filename, O_RDONLY)) < 0)
> > -               inform (input_location, "Not importing %s: couldn't open %s",
> > -                       mod_info->source_filename, aux_da_filename);
> > -             else if ((mod_info->lang & GCOV_MODULE_ASM_STMTS)
> > -                      && flag_ripa_disallow_asm_modules)
> > -               inform (input_location, "Not importing %s: contains assembler"
> > -                       " statements", mod_info->source_filename);
> > -             else
> > +              if (pointer_set_insert (modset, (void *)(size_t)mod_info->ident))
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: already imported",
> > +                            mod_info->source_filename);
> > +                }
> > +              else if ((module_infos[0]->lang & GCOV_MODULE_LANG_MASK) !=
> > +                       (mod_info->lang & GCOV_MODULE_LANG_MASK))
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: source language"
> > +                            " different from primary module's source language",
> > +                            mod_info->source_filename);
> > +                }
> > +              else if (module_infos_read == max_group)
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: maximum group"
> > +                            " size reached", mod_info->source_filename);
> > +                }
> > +              else if (incompatible_cl_args (module_infos[0], mod_info))
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: command-line"
> > +                            " arguments not compatible with primary module",
> > +                            mod_info->source_filename);
> > +                }
> > +              else if ((fd = open (aux_da_filename, O_RDONLY)) < 0)
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: couldn't open %s",
> > +                            mod_info->source_filename, aux_da_filename);
> > +                }
> > +              else if ((mod_info->lang & GCOV_MODULE_ASM_STMTS)
> > +                       && flag_ripa_disallow_asm_modules)
> > +                {
> > +                  if (flag_ripa_verbose)
> > +                    inform (input_location, "Not importing %s: contains "
> > +                            "assembler statements", mod_info->source_filename);
> > +                }
> > +              else
> >                {
> >                  close (fd);
> >                  module_infos_read++;
> > @@ -676,7 +694,7 @@
> >     {
> >       static int warned = 0;
> >
> > -      if (!warned++)
> > +      if (flag_profile_use_verbose && !warned++)
> >        inform (input_location, (flag_guess_branch_prob
> >                 ? "file %s not found, execution counts estimated"
> >                 : "file %s not found, execution counts assumed to be zero"),
> > @@ -689,7 +707,8 @@
> >   if (!entry)
> >     {
> >       if (!flag_dyn_ipa)
> > -       warning (0, "no coverage for function %qE found",
> > +       warning (OPT_Wcoverage_mismatch,
> > +                 "no coverage for function %qE found",
> >                 DECL_ASSEMBLER_NAME (current_function_decl));
> >       return NULL;
> >     }
> > @@ -705,7 +724,7 @@
> >        warning_at (input_location, OPT_Wcoverage_mismatch,
> >                    "The control flow of function %qE does not match "
> >                    "its profile data (counter %qs)", id, ctr_names[counter]);
> > -      if (warning_printed)
> > +      if (flag_profile_use_verbose && warning_printed)
> >        {
> >         inform (input_location, "Use -Wno-error=coverage-mismatch to tolerate "
> >                 "the mismatch but performance may drop if the function is hot");
> > @@ -727,7 +746,8 @@
> >     }
> >     else if (entry->lineno_checksum != lineno_checksum)
> >       {
> > -        warning (0, "Source location for function %qE have changed,"
> > +        warning (OPT_Wcoverage_mismatch,
> > +                 "Source location for function %qE have changed,"
> >                  " the profile data may be out of date",
> >                  DECL_ASSEMBLER_NAME (current_function_decl));
> >       }
> > Index: gcc/common.opt
> > ===================================================================
> > --- gcc/common.opt      (revision 180106)
> > +++ gcc/common.opt      (working copy)
> > @@ -1697,6 +1697,10 @@
> >  Common Joined RejectNegative
> >  Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=
> >
> > +fprofile-use-verbose
> > +Common Report Var(flag_profile_use_verbose)
> > +Enable verbose informational messages for FDO use compilation
> > +
> >  fprofile-values
> >  Common Report Var(flag_profile_values)
> >  Insert code to profile values of expressions
> > Index: gcc/tree-profile.c
> > ===================================================================
> > --- gcc/tree-profile.c  (revision 180106)
> > +++ gcc/tree-profile.c  (working copy)
> > @@ -1096,13 +1096,16 @@
> >                 reusedist_make_instr_call (stmt, subst, counters),
> >                 GSI_NEW_STMT);
> >
> > -            locus = (stmt != NULL)
> > -                ? gimple_location (stmt)
> > -                : DECL_SOURCE_LOCATION (current_function_decl);
> > -            inform (locus,
> > -                    "inserted reuse distance instrumentation for %qs, using "
> > -                    "%d gcov counters", subst->original_name,
> > -                    subst->num_ptr_args * RD_NUM_COUNTERS);
> > +            if (flag_profile_use_verbose)
> > +              {
> > +                locus = (stmt != NULL)
> > +                    ? gimple_location (stmt)
> > +                    : DECL_SOURCE_LOCATION (current_function_decl);
> > +                inform (locus,
> > +                        "inserted reuse distance instrumentation for %qs, using "
> > +                        "%d gcov counters", subst->original_name,
> > +                        subst->num_ptr_args * RD_NUM_COUNTERS);
> > +              }
> >           }
> >       }
> >  }
> > @@ -1214,7 +1217,7 @@
> >
> >   reusedist_from_counters (counters, &rd);
> >
> > -  if (rd.count)
> > +  if (flag_profile_use_verbose && rd.count)
> >     inform (locus, "reuse distance counters for arg %d: %lld %lld %lld %lld",
> >             arg, (long long int)rd.mean_dist, (long long int)rd.mean_size,
> >             (long long int)rd.count, (long long int)rd.dist_x_size);
> > @@ -1283,9 +1286,10 @@
> >   subst_decl = reusedist_get_nt_decl (gimple_call_fndecl (stmt), subst,
> >                                       suffix);
> >   gimple_call_set_fndecl (stmt, subst_decl);
> > -  inform (locus, "replaced %qs with non-temporal %qs",
> > -          subst->original_name,
> > -          IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (subst_decl)));
> > +  if (flag_profile_use_verbose)
> > +    inform (locus, "replaced %qs with non-temporal %qs",
> > +            subst->original_name,
> > +            IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (subst_decl)));
> >  }
> >
> >  /* Replace string operations with equivalent nontemporal, when profitable.  */
> > @@ -1323,11 +1327,13 @@
> >
> >   if (counter_index != n_counters)
> >     {
> > -      warning (0, "coverage mismatch for reuse distance counters "
> > +      warning (OPT_Wcoverage_mismatch,
> > +               "coverage mismatch for reuse distance counters "
> >                "in function %qs", IDENTIFIER_POINTER
> >                (DECL_ASSEMBLER_NAME (current_function_decl)));
> > -      inform (input_location, "number of counters is %u instead of %u",
> > -              n_counters, counter_index);
> > +      if (flag_profile_use_verbose)
> > +        inform (input_location, "number of counters is %u instead of %u",
> > +                n_counters, counter_index);
> >     }
> >  }
> >
> >
> > --
> > This patch is available for review at http://codereview.appspot.com/5294043
> >