On Mon, 2018-10-22 at 16:08 +0200, Richard Biener wrote:
> On Mon, 22 Oct 2018, David Malcolm wrote:
> 
> > On Mon, 2018-10-22 at 15:56 +0200, Richard Biener wrote:
> > [...snip...]
> > 
> > > This is what I finally applied for the original patch after
> > > fixing
> > > the above issue.
> > > 
> > > Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
> > > 
> > > Richard.
> > > 
> > > 2018-10-22  Richard Biener  <rguent...@suse.de>
> > > 
> > >      * gimple-ssa-evrp-analyze.c
> > >      (evrp_range_analyzer::record_ranges_from_incoming_edge): Be
> > >      smarter about what ranges to use.
> > >      * tree-vrp.c (add_assert_info): Dump here.
> > >      (register_edge_assert_for_2): Instead of here at multiple
> > > but
> > >      not all places.
> > 
> > [...snip...]
> >   
> > > Index: gcc/tree-vrp.c
> > > =================================================================
> > > ==
> > > --- gcc/tree-vrp.c  (revision 265381)
> > > +++ gcc/tree-vrp.c  (working copy)
> > > @@ -2299,6 +2299,9 @@ add_assert_info (vec<assert_info> &asser
> > >     info.val = val;
> > >     info.expr = expr;
> > >     asserts.safe_push (info);
> > > +  dump_printf (MSG_NOTE | MSG_PRIORITY_INTERNALS,
> > > +          "Adding assert for %T from %T %s %T\n",
> > > +          name, expr, op_symbol_code (comp_code), val);
> > >   }
> > 
> > I think this dump_printf call needs to be wrapped in:
> >    if (dump_enabled_p ())
> > since otherwise it does non-trivial work, which is then discarded
> > for
> > the common case where dumping is disabled.
> > 
> > Alternatively, should dump_printf and dump_printf_loc test have an
> > early-reject internally for that?
> 
> Oh, I thought it had one - at least the "old" implementation
> did nothing expensive so if (dump_enabled_p ()) was just used
> to guard multiple printf stmts, avoiding multiple no-op calls.
> 
> Did you check that all existing dump_* calls are wrapped inside
> a dump_enabled_p () region?  If so I can properly guard the above.
> Otherwise I think we should restore previous expectation?
> 
> Richard.

Here's a patch to address the above.

If called when !dump_enabled_p, the dump_* functions effectively do
nothing, but as of r263178 this doing "nothing" involves non-trivial
work internally.

I wasn't sure whether the dump_* functions should assert that
  dump_enabled_p ()
is true when they're called, or if they should bail out immediately
for this case, so in this patch I implemented both, so that we get
an assertion failure, and otherwise bail out for the case where
!dump_enabled_p when assertions are disabled.

Alternatively, we could remove the assertion, and simply have the
dump_* functions immediately bail out.

Richard, do you have a preference?

The patch also fixes all of the places I found during testing
(on x86_64-pc-linux-gnu) that call into dump_* but which
weren't guarded by
  if (dump_enabled_p ())
The patch adds such conditionals.

Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.

OK for trunk?

gcc/ChangeLog:
        * dumpfile.c (VERIFY_DUMP_ENABLED_P): New macro.
        (dump_gimple_stmt): Use it.
        (dump_gimple_stmt_loc): Likewise.
        (dump_gimple_expr): Likewise.
        (dump_gimple_expr_loc): Likewise.
        (dump_generic_expr): Likewise.
        (dump_generic_expr_loc): Likewise.
        (dump_printf): Likewise.
        (dump_printf_loc): Likewise.
        (dump_dec): Likewise.
        (dump_dec): Likewise.
        (dump_hex): Likewise.
        (dump_symtab_node): Likewise.

gcc/ChangeLog:
        * gimple-loop-interchange.cc (tree_loop_interchange::interchange):
        Guard dump call with dump_enabled_p.
        * graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl): Likewise.
        * graphite-optimize-isl.c (optimize_isl): Likewise.
        * graphite.c (graphite_transform_loops): Likewise.
        * tree-loop-distribution.c (pass_loop_distribution::execute): Likewise.
        * tree-parloops.c (parallelize_loops): Likewise.
        * tree-ssa-loop-niter.c (number_of_iterations_exit): Likewise.
        * tree-vect-data-refs.c (vect_analyze_group_access_1): Likewise.
        (vect_prune_runtime_alias_test_list): Likewise.
        * tree-vect-loop.c (vect_update_vf_for_slp): Likewise.
        (vect_estimate_min_profitable_iters): Likewise.
        * tree-vect-slp.c (vect_record_max_nunits): Likewise.
        (vect_build_slp_tree_2): Likewise.
        (vect_supported_load_permutation_p): Likewise.
        (vect_slp_analyze_operations): Likewise.
        (vect_slp_analyze_bb_1): Likewise.
        (vect_slp_bb): Likewise.
        * tree-vect-stmts.c (vect_analyze_stmt): Likewise.
        * tree-vectorizer.c (try_vectorize_loop_1): Likewise.
        (pass_slp_vectorize::execute): Likewise.
        (increase_alignment): Likewise.
---
 gcc/dumpfile.c                   | 25 ++++++++++++
 gcc/gimple-loop-interchange.cc   |  2 +-
 gcc/graphite-isl-ast-to-gimple.c | 11 ++++--
 gcc/graphite-optimize-isl.c      | 36 ++++++++++-------
 gcc/graphite.c                   |  3 +-
 gcc/tree-loop-distribution.c     |  9 +++--
 gcc/tree-parloops.c              | 17 ++++----
 gcc/tree-ssa-loop-niter.c        |  2 +-
 gcc/tree-vect-data-refs.c        | 10 +++--
 gcc/tree-vect-loop.c             | 53 ++++++++++++++-----------
 gcc/tree-vect-slp.c              | 84 +++++++++++++++++++++++-----------------
 gcc/tree-vect-stmts.c            |  5 ++-
 gcc/tree-vectorizer.c            | 26 ++++++++-----
 13 files changed, 177 insertions(+), 106 deletions(-)

diff --git a/gcc/dumpfile.c b/gcc/dumpfile.c
index 09c2490..a1ab205 100644
--- a/gcc/dumpfile.c
+++ b/gcc/dumpfile.c
@@ -1184,6 +1184,19 @@ dump_context dump_context::s_default;
 /* Implementation of dump_* API calls, calling into dump_context
    member functions.  */
 
+/* Calls to the dump_* functions do non-trivial work, so they ought
+   to be guarded by:
+     if (dump_enabled_p ())
+   Assert that they are guarded, and, if assertions are disabled,
+   bail out if the calls weren't properly guarded.  */
+
+#define VERIFY_DUMP_ENABLED_P \
+  do {                                 \
+    gcc_assert (dump_enabled_p ());    \
+    if (!dump_enabled_p ())            \
+      return;                          \
+  } while (0)
+
 /* Dump gimple statement GS with SPC indentation spaces and
    EXTRA_DUMP_FLAGS on the dump streams if DUMP_KIND is enabled.  */
 
@@ -1191,6 +1204,7 @@ void
 dump_gimple_stmt (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
                  gimple *gs, int spc)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_gimple_stmt (dump_kind, extra_dump_flags, gs, spc);
 }
 
@@ -1200,6 +1214,7 @@ void
 dump_gimple_stmt_loc (dump_flags_t dump_kind, const dump_location_t &loc,
                      dump_flags_t extra_dump_flags, gimple *gs, int spc)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_gimple_stmt_loc (dump_kind, loc, extra_dump_flags,
                                             gs, spc);
 }
@@ -1212,6 +1227,7 @@ void
 dump_gimple_expr (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
                  gimple *gs, int spc)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_gimple_expr (dump_kind, extra_dump_flags, gs, spc);
 }
 
@@ -1221,6 +1237,7 @@ void
 dump_gimple_expr_loc (dump_flags_t dump_kind, const dump_location_t &loc,
                      dump_flags_t extra_dump_flags, gimple *gs, int spc)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_gimple_expr_loc (dump_kind, loc, extra_dump_flags,
                                             gs, spc);
 }
@@ -1232,6 +1249,7 @@ void
 dump_generic_expr (dump_flags_t dump_kind, dump_flags_t extra_dump_flags,
                   tree t)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_generic_expr (dump_kind, extra_dump_flags, t);
 }
 
@@ -1242,6 +1260,7 @@ void
 dump_generic_expr_loc (dump_flags_t dump_kind, const dump_location_t &loc,
                       dump_flags_t extra_dump_flags, tree t)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_generic_expr_loc (dump_kind, loc, extra_dump_flags,
                                              t);
 }
@@ -1251,6 +1270,7 @@ dump_generic_expr_loc (dump_flags_t dump_kind, const 
dump_location_t &loc,
 void
 dump_printf (dump_flags_t dump_kind, const char *format, ...)
 {
+  VERIFY_DUMP_ENABLED_P;
   va_list ap;
   va_start (ap, format);
   dump_context::get ().dump_printf_va (dump_kind, format, &ap);
@@ -1264,6 +1284,7 @@ void
 dump_printf_loc (dump_flags_t dump_kind, const dump_location_t &loc,
                 const char *format, ...)
 {
+  VERIFY_DUMP_ENABLED_P;
   va_list ap;
   va_start (ap, format);
   dump_context::get ().dump_printf_loc_va (dump_kind, loc, format, &ap);
@@ -1276,6 +1297,7 @@ template<unsigned int N, typename C>
 void
 dump_dec (dump_flags_t dump_kind, const poly_int<N, C> &value)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_dec (dump_kind, value);
 }
 
@@ -1288,6 +1310,7 @@ template void dump_dec (dump_flags_t, const 
poly_widest_int &);
 void
 dump_dec (dump_flags_t dump_kind, const poly_wide_int &value, signop sgn)
 {
+  VERIFY_DUMP_ENABLED_P;
   if (dump_file
       && dump_context::get ().apply_dump_filter_p (dump_kind, pflags))
     print_dec (value, dump_file, sgn);
@@ -1302,6 +1325,7 @@ dump_dec (dump_flags_t dump_kind, const poly_wide_int 
&value, signop sgn)
 void
 dump_hex (dump_flags_t dump_kind, const poly_wide_int &value)
 {
+  VERIFY_DUMP_ENABLED_P;
   if (dump_file
       && dump_context::get ().apply_dump_filter_p (dump_kind, pflags))
     print_hex (value, dump_file);
@@ -1325,6 +1349,7 @@ dumpfile_ensure_any_optinfo_are_flushed ()
 void
 dump_symtab_node (dump_flags_t dump_kind, symtab_node *node)
 {
+  VERIFY_DUMP_ENABLED_P;
   dump_context::get ().dump_symtab_node (dump_kind, node);
 }
 
diff --git a/gcc/gimple-loop-interchange.cc b/gcc/gimple-loop-interchange.cc
index 08aeb8e..9145b12 100644
--- a/gcc/gimple-loop-interchange.cc
+++ b/gcc/gimple-loop-interchange.cc
@@ -1645,7 +1645,7 @@ tree_loop_interchange::interchange (vec<data_reference_p> 
datarefs,
     }
   simple_dce_from_worklist (m_dce_seeds);
 
-  if (changed_p)
+  if (changed_p && dump_enabled_p ())
     dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loc,
                     "loops interchanged in loop nest\n");
 
diff --git a/gcc/graphite-isl-ast-to-gimple.c b/gcc/graphite-isl-ast-to-gimple.c
index 9e78465..0d8960c 100644
--- a/gcc/graphite-isl-ast-to-gimple.c
+++ b/gcc/graphite-isl-ast-to-gimple.c
@@ -1518,10 +1518,13 @@ graphite_regenerate_ast_isl (scop_p scop)
 
   if (t.codegen_error_p ())
     {
-      dump_user_location_t loc = find_loop_location
-       (scop->scop_info->region.entry->dest->loop_father);
-      dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
-                      "loop nest not optimized, code generation error\n");
+      if (dump_enabled_p ())
+       {
+         dump_user_location_t loc = find_loop_location
+           (scop->scop_info->region.entry->dest->loop_father);
+         dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
+                          "loop nest not optimized, code generation error\n");
+       }
 
       /* Remove the unreachable region.  */
       remove_edge_and_dominated_blocks (if_region->true_region->region.entry);
diff --git a/gcc/graphite-optimize-isl.c b/gcc/graphite-optimize-isl.c
index 35e9ac0..8ceaa49 100644
--- a/gcc/graphite-optimize-isl.c
+++ b/gcc/graphite-optimize-isl.c
@@ -160,16 +160,19 @@ optimize_isl (scop_p scop)
   if (!scop->transformed_schedule
       || isl_ctx_last_error (scop->isl_context) != isl_error_none)
     {
-      dump_user_location_t loc = find_loop_location
-       (scop->scop_info->region.entry->dest->loop_father);
-      if (isl_ctx_last_error (scop->isl_context) == isl_error_quota)
-       dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
-                        "loop nest not optimized, optimization timed out "
-                        "after %d operations [--param max-isl-operations]\n",
-                        max_operations);
-      else
-       dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
-                        "loop nest not optimized, ISL signalled an error\n");
+      if (dump_enabled_p ())
+       {
+         dump_user_location_t loc = find_loop_location
+           (scop->scop_info->region.entry->dest->loop_father);
+         if (isl_ctx_last_error (scop->isl_context) == isl_error_quota)
+           dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
+                            "loop nest not optimized, optimization timed out "
+                            "after %d operations [--param 
max-isl-operations]\n",
+                            max_operations);
+         else
+           dump_printf_loc (MSG_MISSED_OPTIMIZATION, loc,
+                            "loop nest not optimized, ISL signalled an 
error\n");
+       }
       return false;
     }
 
@@ -182,11 +185,14 @@ optimize_isl (scop_p scop)
 
   if (same_schedule)
     {
-      dump_user_location_t loc = find_loop_location
-       (scop->scop_info->region.entry->dest->loop_father);
-      dump_printf_loc (MSG_NOTE, loc,
-                      "loop nest not optimized, optimized schedule is "
-                      "identical to original schedule\n");
+      if (dump_enabled_p ())
+       {
+         dump_user_location_t loc = find_loop_location
+           (scop->scop_info->region.entry->dest->loop_father);
+         dump_printf_loc (MSG_NOTE, loc,
+                          "loop nest not optimized, optimized schedule is "
+                          "identical to original schedule\n");
+       }
       if (dump_file)
        print_schedule_ast (dump_file, scop->original_schedule, scop);
       isl_schedule_free (scop->transformed_schedule);
diff --git a/gcc/graphite.c b/gcc/graphite.c
index ddf16a8..f49eef6 100644
--- a/gcc/graphite.c
+++ b/gcc/graphite.c
@@ -410,7 +410,8 @@ graphite_transform_loops (void)
          continue;
 
        changed = true;
-       if (graphite_regenerate_ast_isl (scop))
+       if (graphite_regenerate_ast_isl (scop)
+           && dump_enabled_p ())
          {
            dump_user_location_t loc = find_loop_location
              (scops[i]->scop_info->region.entry->dest->loop_father);
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c
index 1e8a9f0..8f61a35 100644
--- a/gcc/tree-loop-distribution.c
+++ b/gcc/tree-loop-distribution.c
@@ -3139,10 +3139,11 @@ pass_loop_distribution::execute (function *fun)
          if (nb_generated_loops + nb_generated_calls > 0)
            {
              changed = true;
-             dump_printf_loc (MSG_OPTIMIZED_LOCATIONS,
-                              loc, "Loop%s %d distributed: split to %d loops "
-                              "and %d library calls.\n", str, loop->num,
-                              nb_generated_loops, nb_generated_calls);
+             if (dump_enabled_p ())
+               dump_printf_loc (MSG_OPTIMIZED_LOCATIONS,
+                                loc, "Loop%s %d distributed: split to %d loops 
"
+                                "and %d library calls.\n", str, loop->num,
+                                nb_generated_loops, nb_generated_calls);
 
              break;
            }
diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c
index 94824a0..4e22898 100644
--- a/gcc/tree-parloops.c
+++ b/gcc/tree-parloops.c
@@ -3409,13 +3409,16 @@ parallelize_loops (bool oacc_kernels_p)
       changed = true;
       skip_loop = loop->inner;
 
-      dump_user_location_t loop_loc = find_loop_location (loop);
-      if (loop->inner)
-       dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loop_loc,
-                        "parallelizing outer loop %d\n", loop->num);
-      else
-       dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loop_loc,
-                        "parallelizing inner loop %d\n", loop->num);
+      if (dump_enabled_p ())
+       {
+         dump_user_location_t loop_loc = find_loop_location (loop);
+         if (loop->inner)
+           dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loop_loc,
+                            "parallelizing outer loop %d\n", loop->num);
+         else
+           dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, loop_loc,
+                            "parallelizing inner loop %d\n", loop->num);
+       }
 
       gen_parallel_loop (loop, &reduction_list,
                         n_threads, &niter_desc, oacc_kernels_p);
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c
index e763b35..9bcd664 100644
--- a/gcc/tree-ssa-loop-niter.c
+++ b/gcc/tree-ssa-loop-niter.c
@@ -2630,7 +2630,7 @@ number_of_iterations_exit (struct loop *loop, edge exit,
   if (integer_nonzerop (niter->assumptions))
     return true;
 
-  if (warn)
+  if (warn && dump_enabled_p ())
     dump_printf_loc (MSG_MISSED_OPTIMIZATION, stmt,
                     "missed loop optimization: niters analysis ends up "
                     "with assumptions.\n");
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 5f08cdf..ae31302 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -2426,7 +2426,8 @@ vect_analyze_group_access_1 (dr_vec_info *dr_info)
          return true;
        }
 
-      dump_printf_loc (MSG_NOTE, vect_location, "using strided accesses\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_NOTE, vect_location, "using strided accesses\n");
       STMT_VINFO_STRIDED_P (stmt_info) = true;
       return true;
     }
@@ -3526,9 +3527,10 @@ vect_prune_runtime_alias_test_list (loop_vec_info 
loop_vinfo)
   unsigned int count = (comp_alias_ddrs.length ()
                        + check_unequal_addrs.length ());
 
-  dump_printf_loc (MSG_NOTE, vect_location,
-                  "improved number of alias checks from %d to %d\n",
-                  may_alias_ddrs.length (), count);
+  if (dump_enabled_p ())
+    dump_printf_loc (MSG_NOTE, vect_location,
+                    "improved number of alias checks from %d to %d\n",
+                    may_alias_ddrs.length (), count);
   if ((int) count > PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS))
     return opt_result::failure_at
       (vect_location,
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 5ce203b..a86f625 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -1399,14 +1399,16 @@ vect_update_vf_for_slp (loop_vec_info loop_vinfo)
 
   if (only_slp_in_loop)
     {
-      dump_printf_loc (MSG_NOTE, vect_location,
-                      "Loop contains only SLP stmts\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_NOTE, vect_location,
+                        "Loop contains only SLP stmts\n");
       vectorization_factor = LOOP_VINFO_SLP_UNROLLING_FACTOR (loop_vinfo);
     }
   else
     {
-      dump_printf_loc (MSG_NOTE, vect_location,
-                      "Loop contains SLP and non-SLP stmts\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_NOTE, vect_location,
+                        "Loop contains SLP and non-SLP stmts\n");
       /* Both the vectorization factor and unroll factor have the form
         current_vector_size * X for some rational X, so they must have
         a common multiple.  */
@@ -3328,7 +3330,8 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
   /* Cost model disabled.  */
   if (unlimited_cost_model (LOOP_VINFO_LOOP (loop_vinfo)))
     {
-      dump_printf_loc (MSG_NOTE, vect_location, "cost model disabled.\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_NOTE, vect_location, "cost model disabled.\n");
       *ret_min_profitable_niters = 0;
       *ret_min_profitable_estimate = 0;
       return;
@@ -3341,9 +3344,10 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
       unsigned len = LOOP_VINFO_MAY_MISALIGN_STMTS (loop_vinfo).length ();
       (void) add_stmt_cost (target_cost_data, len, vector_stmt, NULL, 0,
                            vect_prologue);
-      dump_printf (MSG_NOTE,
-                   "cost model: Adding cost of checks for loop "
-                   "versioning to treat misalignment.\n");
+      if (dump_enabled_p ())
+       dump_printf (MSG_NOTE,
+                    "cost model: Adding cost of checks for loop "
+                    "versioning to treat misalignment.\n");
     }
 
   /* Requires loop versioning with alias checks.  */
@@ -3370,9 +3374,10 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
          (void) add_stmt_cost (target_cost_data, nstmts, scalar_stmt,
                                NULL, 0, vect_prologue);
        }
-      dump_printf (MSG_NOTE,
-                   "cost model: Adding cost of checks for loop "
-                   "versioning aliasing.\n");
+      if (dump_enabled_p ())
+       dump_printf (MSG_NOTE,
+                    "cost model: Adding cost of checks for loop "
+                    "versioning aliasing.\n");
     }
 
   /* Requires loop versioning with niter checks.  */
@@ -3381,9 +3386,10 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
       /*  FIXME: Make cost depend on complexity of individual check.  */
       (void) add_stmt_cost (target_cost_data, 1, vector_stmt, NULL, 0,
                            vect_prologue);
-      dump_printf (MSG_NOTE,
-                  "cost model: Adding cost of checks for loop "
-                  "versioning niters.\n");
+      if (dump_enabled_p ())
+       dump_printf (MSG_NOTE,
+                    "cost model: Adding cost of checks for loop "
+                    "versioning niters.\n");
     }
 
   if (LOOP_REQUIRES_VERSIONING (loop_vinfo))
@@ -3431,15 +3437,17 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
   else if (npeel < 0)
     {
       peel_iters_prologue = assumed_vf / 2;
-      dump_printf (MSG_NOTE, "cost model: "
-                   "prologue peel iters set to vf/2.\n");
+      if (dump_enabled_p ())
+       dump_printf (MSG_NOTE, "cost model: "
+                    "prologue peel iters set to vf/2.\n");
 
       /* If peeling for alignment is unknown, loop bound of main loop becomes
          unknown.  */
       peel_iters_epilogue = assumed_vf / 2;
-      dump_printf (MSG_NOTE, "cost model: "
-                   "epilogue peel iters set to vf/2 because "
-                   "peeling for alignment is unknown.\n");
+      if (dump_enabled_p ())
+       dump_printf (MSG_NOTE, "cost model: "
+                    "epilogue peel iters set to vf/2 because "
+                    "peeling for alignment is unknown.\n");
 
       /* If peeled iterations are unknown, count a taken branch and a not taken
          branch per peeled loop. Even if scalar loop iterations are known,
@@ -3644,9 +3652,10 @@ vect_estimate_min_profitable_iters (loop_vec_info 
loop_vinfo,
       return;
     }
 
-  dump_printf (MSG_NOTE,
-              "  Calculated minimum iters for profitability: %d\n",
-              min_profitable_iters);
+  if (dump_enabled_p ())
+    dump_printf (MSG_NOTE,
+                "  Calculated minimum iters for profitability: %d\n",
+                min_profitable_iters);
 
   if (!LOOP_VINFO_FULLY_MASKED_P (loop_vinfo)
       && min_profitable_iters < (assumed_vf + peel_iters_prologue))
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index f802b00..f2bb8da 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -575,9 +575,10 @@ vect_record_max_nunits (stmt_vec_info stmt_info, unsigned 
int group_size,
       && (!nunits.is_constant (&const_nunits)
          || const_nunits > group_size))
     {
-      dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-                      "Build SLP failed: unrolling required "
-                      "in basic block SLP\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+                        "Build SLP failed: unrolling required "
+                        "in basic block SLP\n");
       /* Fatal mismatch.  */
       return false;
     }
@@ -1231,9 +1232,10 @@ vect_build_slp_tree_2 (vec_info *vinfo,
                    vect_free_slp_tree (grandchild, false);
                  SLP_TREE_CHILDREN (child).truncate (0);
 
-                 dump_printf_loc (MSG_NOTE, vect_location,
-                                  "Building parent vector operands from "
-                                  "scalars instead\n");
+                 if (dump_enabled_p ())
+                   dump_printf_loc (MSG_NOTE, vect_location,
+                                    "Building parent vector operands from "
+                                    "scalars instead\n");
                  oprnd_info->def_stmts = vNULL;
                  SLP_TREE_DEF_TYPE (child) = vect_external_def;
                  children.safe_push (child);
@@ -1261,8 +1263,9 @@ vect_build_slp_tree_2 (vec_info *vinfo,
             scalar version.  */
          && !is_pattern_stmt_p (stmt_info))
        {
-         dump_printf_loc (MSG_NOTE, vect_location,
-                          "Building vector operands from scalars\n");
+         if (dump_enabled_p ())
+           dump_printf_loc (MSG_NOTE, vect_location,
+                            "Building vector operands from scalars\n");
          child = vect_create_new_slp_node (oprnd_info->def_stmts);
          SLP_TREE_DEF_TYPE (child) = vect_external_def;
          children.safe_push (child);
@@ -1334,16 +1337,19 @@ vect_build_slp_tree_2 (vec_info *vinfo,
          while (j != group_size);
 
          /* Swap mismatched definition stmts.  */
-         dump_printf_loc (MSG_NOTE, vect_location,
-                          "Re-trying with swapped operands of stmts ");
+         if (dump_enabled_p ())
+           dump_printf_loc (MSG_NOTE, vect_location,
+                            "Re-trying with swapped operands of stmts ");
          for (j = 0; j < group_size; ++j)
            if (matches[j] == !swap_not_matching)
              {
                std::swap (oprnds_info[0]->def_stmts[j],
                           oprnds_info[1]->def_stmts[j]);
-               dump_printf (MSG_NOTE, "%d ", j);
+               if (dump_enabled_p ())
+                 dump_printf (MSG_NOTE, "%d ", j);
              }
-         dump_printf (MSG_NOTE, "\n");
+         if (dump_enabled_p ())
+           dump_printf (MSG_NOTE, "\n");
          /* And try again with scratch 'matches' ... */
          bool *tem = XALLOCAVEC (bool, group_size);
          if ((child = vect_build_slp_tree (vinfo, oprnd_info->def_stmts,
@@ -1399,9 +1405,10 @@ vect_build_slp_tree_2 (vec_info *vinfo,
                        vect_free_slp_tree (grandchild, false);
                      SLP_TREE_CHILDREN (child).truncate (0);
 
-                     dump_printf_loc (MSG_NOTE, vect_location,
-                                      "Building parent vector operands from "
-                                      "scalars instead\n");
+                     if (dump_enabled_p ())
+                       dump_printf_loc (MSG_NOTE, vect_location,
+                                        "Building parent vector operands from "
+                                        "scalars instead\n");
                      oprnd_info->def_stmts = vNULL;
                      SLP_TREE_DEF_TYPE (child) = vect_external_def;
                      children.safe_push (child);
@@ -1757,9 +1764,10 @@ vect_supported_load_permutation_p (slp_instance 
slp_instn)
              if (!TYPE_VECTOR_SUBPARTS (vectype).is_constant (&nunits)
                  || maxk >= (DR_GROUP_SIZE (group_info) & ~(nunits - 1)))
                {
-                 dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-                                  "BB vectorization with gaps at the end of "
-                                  "a load is not supported\n");
+                 if (dump_enabled_p ())
+                   dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+                                    "BB vectorization with gaps at the end of "
+                                    "a load is not supported\n");
                  return false;
                }
 
@@ -1769,9 +1777,10 @@ vect_supported_load_permutation_p (slp_instance 
slp_instn)
              if (!vect_transform_slp_perm_load (node, tem, NULL,
                                                 1, slp_instn, true, &n_perms))
                {
-                 dump_printf_loc (MSG_MISSED_OPTIMIZATION,
-                                  vect_location,
-                                  "unsupported load permutation\n");
+                 if (dump_enabled_p ())
+                   dump_printf_loc (MSG_MISSED_OPTIMIZATION,
+                                    vect_location,
+                                    "unsupported load permutation\n");
                  return false;
                }
            }
@@ -2592,9 +2601,10 @@ vect_slp_analyze_operations (vec_info *vinfo)
         {
          slp_tree node = SLP_INSTANCE_TREE (instance);
          stmt_vec_info stmt_info = SLP_TREE_SCALAR_STMTS (node)[0];
-         dump_printf_loc (MSG_NOTE, vect_location,
-                          "removing SLP instance operations starting from: %G",
-                          stmt_info->stmt);
+         if (dump_enabled_p ())
+           dump_printf_loc (MSG_NOTE, vect_location,
+                            "removing SLP instance operations starting from: 
%G",
+                            stmt_info->stmt);
          vect_free_slp_instance (instance, false);
           vinfo->slp_instances.ordered_remove (i);
          cost_vec.release ();
@@ -2888,9 +2898,10 @@ vect_slp_analyze_bb_1 (gimple_stmt_iterator region_begin,
        {
          slp_tree node = SLP_INSTANCE_TREE (instance);
          stmt_vec_info stmt_info = SLP_TREE_SCALAR_STMTS (node)[0];
-         dump_printf_loc (MSG_NOTE, vect_location,
-                          "removing SLP instance operations starting from: %G",
-                          stmt_info->stmt);
+         if (dump_enabled_p ())
+           dump_printf_loc (MSG_NOTE, vect_location,
+                            "removing SLP instance operations starting from: 
%G",
+                            stmt_info->stmt);
          vect_free_slp_instance (instance, false);
          BB_VINFO_SLP_INSTANCES (bb_vinfo).ordered_remove (i);
          continue;
@@ -3006,14 +3017,17 @@ vect_slp_bb (basic_block bb)
          vect_schedule_slp (bb_vinfo);
 
          unsigned HOST_WIDE_INT bytes;
-         if (current_vector_size.is_constant (&bytes))
-           dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
-                            "basic block part vectorized using %wu byte "
-                            "vectors\n", bytes);
-         else
-           dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
-                            "basic block part vectorized using variable "
-                            "length vectors\n");
+         if (dump_enabled_p ())
+           {
+             if (current_vector_size.is_constant (&bytes))
+               dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
+                                "basic block part vectorized using %wu byte "
+                                "vectors\n", bytes);
+             else
+               dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
+                                "basic block part vectorized using variable "
+                                "length vectors\n");
+           }
 
          vectorized = true;
        }
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index 8133149..8b3d53b 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -9519,8 +9519,9 @@ vect_analyze_stmt (stmt_vec_info stmt_info, bool 
*need_to_vectorize,
 
   if (PURE_SLP_STMT (stmt_info) && !node)
     {
-      dump_printf_loc (MSG_NOTE, vect_location,
-                      "handled only by SLP analysis\n");
+      if (dump_enabled_p ())
+       dump_printf_loc (MSG_NOTE, vect_location,
+                        "handled only by SLP analysis\n");
       return opt_result::success ();
     }
 
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index 12bf0fc..0a4eca5 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -925,8 +925,9 @@ try_vectorize_loop_1 (hash_table<simduid_to_vf> 
*&simduid_to_vf_htab,
            }
          if (!require_loop_vectorize && vect_slp_bb (bb))
            {
-             dump_printf_loc (MSG_NOTE, vect_location,
-                              "basic block vectorized\n");
+             if (dump_enabled_p ())
+               dump_printf_loc (MSG_NOTE, vect_location,
+                                "basic block vectorized\n");
              fold_loop_internal_call (loop_vectorized_call,
                                       boolean_true_node);
              loop_vectorized_call = NULL;
@@ -955,12 +956,15 @@ try_vectorize_loop_1 (hash_table<simduid_to_vf> 
*&simduid_to_vf_htab,
     set_uid_loop_bbs (loop_vinfo, loop_vectorized_call);
 
   unsigned HOST_WIDE_INT bytes;
-  if (current_vector_size.is_constant (&bytes))
-    dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
-                    "loop vectorized using %wu byte vectors\n", bytes);
-  else
-    dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
-                    "loop vectorized using variable length vectors\n");
+  if (dump_enabled_p ())
+    {
+      if (current_vector_size.is_constant (&bytes))
+       dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
+                        "loop vectorized using %wu byte vectors\n", bytes);
+      else
+       dump_printf_loc (MSG_OPTIMIZED_LOCATIONS, vect_location,
+                        "loop vectorized using variable length vectors\n");
+    }
 
   loop_p new_loop = vect_transform_loop (loop_vinfo);
   (*num_vectorized_loops)++;
@@ -1289,7 +1293,8 @@ pass_slp_vectorize::execute (function *fun)
   FOR_EACH_BB_FN (bb, fun)
     {
       if (vect_slp_bb (bb))
-       dump_printf_loc (MSG_NOTE, vect_location, "basic block vectorized\n");
+       if (dump_enabled_p ())
+         dump_printf_loc (MSG_NOTE, vect_location, "basic block vectorized\n");
     }
 
   if (!in_loop_pipeline)
@@ -1447,7 +1452,8 @@ increase_alignment (void)
       if (alignment && vect_can_force_dr_alignment_p (decl, alignment))
         {
          vnode->increase_alignment (alignment);
-          dump_printf (MSG_NOTE, "Increasing alignment of decl: %T\n", decl);
+         if (dump_enabled_p ())
+           dump_printf (MSG_NOTE, "Increasing alignment of decl: %T\n", decl);
         }
     }
 
-- 
1.8.5.3

Reply via email to