Revert accidental commit.

[pf3gnuchains/gcc-fork.git] / gcc / predict.c

diff --git a/gcc/predict.c b/gcc/predict.c
index 1b61ee4..cb4edcd 100644 (file)
--- a/gcc/predict.c
+++ b/gcc/predict.c
@@ -78,7 +78,6 @@ static sreal real_zero, real_one, real_almost_one, real_br_prob_base,
 static void combine_predictions_for_insn (rtx, basic_block);
 static void dump_prediction (FILE *, enum br_predictor, int, basic_block, int);
 static void predict_paths_leading_to (basic_block, enum br_predictor, enum prediction);
-static void choose_function_section (void);
 static bool can_predict_insn_p (const_rtx);
 
 /* Information we hold about each branch predictor.
@@ -1329,9 +1328,17 @@ strip_predict_hints (void)
                  && gimple_call_num_args (stmt) == 2)
                {
                  var = gimple_call_lhs (stmt);
-                 ass_stmt = gimple_build_assign (var, gimple_call_arg (stmt, 0));
-
-                 gsi_replace (&bi, ass_stmt, true);
+                 if (var)
+                   {
+                     ass_stmt
+                       = gimple_build_assign (var, gimple_call_arg (stmt, 0));
+                     gsi_replace (&bi, ass_stmt, true);
+                   }
+                 else
+                   {
+                     gsi_remove (&bi, true);
+                     continue;
+                   }
                }
            }
          gsi_next (&bi);
@@ -2177,8 +2184,6 @@ estimate_bb_frequencies (void)
       free_aux_for_edges ();
     }
   compute_function_frequency ();
-  if (flag_reorder_functions)
-    choose_function_section ();
 }
 
 /* Decide whether function is hot, cold or unlikely executed.  */
@@ -2187,6 +2192,11 @@ compute_function_frequency (void)
 {
   basic_block bb;
   struct cgraph_node *node = cgraph_node (current_function_decl);
+  if (DECL_STATIC_CONSTRUCTOR (current_function_decl)
+      || MAIN_NAME_P (DECL_NAME (current_function_decl)))
+    node->only_called_at_startup = true;
+  if (DECL_STATIC_DESTRUCTOR (current_function_decl))
+    node->only_called_at_exit = true;
 
   if (!profile_info || !flag_branch_probabilities)
     {
@@ -2219,35 +2229,6 @@ compute_function_frequency (void)
     }
 }
 
-/* Choose appropriate section for the function.  */
-static void
-choose_function_section (void)
-{
-  struct cgraph_node *node = cgraph_node (current_function_decl);
-  if (DECL_SECTION_NAME (current_function_decl)
-      || !targetm.have_named_sections
-      /* Theoretically we can split the gnu.linkonce text section too,
-        but this requires more work as the frequency needs to match
-        for all generated objects so we need to merge the frequency
-        of all instances.  For now just never set frequency for these.  */
-      || DECL_ONE_ONLY (current_function_decl))
-    return;
-
-  /* If we are doing the partitioning optimization, let the optimization
-     choose the correct section into which to put things.  */
-
-  if (flag_reorder_blocks_and_partition)
-    return;
-
-  if (node->frequency == NODE_FREQUENCY_HOT)
-    DECL_SECTION_NAME (current_function_decl) =
-      build_string (strlen (HOT_TEXT_SECTION_NAME), HOT_TEXT_SECTION_NAME);
-  if (node->frequency == NODE_FREQUENCY_UNLIKELY_EXECUTED)
-    DECL_SECTION_NAME (current_function_decl) =
-      build_string (strlen (UNLIKELY_EXECUTED_TEXT_SECTION_NAME),
-                   UNLIKELY_EXECUTED_TEXT_SECTION_NAME);
-}
-
 static bool
 gate_estimate_probability (void)
 {
@@ -2316,6 +2297,7 @@ struct gimple_opt_pass pass_strip_predict_hints =
 void
 rebuild_frequencies (void)
 {
+  timevar_push (TV_REBUILD_FREQUENCIES);
   if (profile_status == PROFILE_GUESSED)
     {
       loop_optimizer_init (0);
@@ -2330,4 +2312,5 @@ rebuild_frequencies (void)
     counts_to_freqs ();
   else
     gcc_unreachable ();
+  timevar_pop (TV_REBUILD_FREQUENCIES);
 }