re PR middle-end/53321 (LTO bootstrap failed with bootstrap-profiled)

	PR middle-end/53321
	* ipa.c (symtab_remove_unreachable_nodes): Partially revert r187375
	to not call cgraph_propagate_frequency if something was changed.

testsuite/ChangLog:

	PR middle-end/53321
	* g++.dg/torture/pr53321.C: New test.

From-SVN: r189261

gcc/ChangeLog

+2012-07-04  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR middle-end/53321
+	* ipa.c (symtab_remove_unreachable_nodes): Partially revert r187375
+	to not call cgraph_propagate_frequency if something was changed.
+
 2012-07-04  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/53433
@@ -31,7 +37,7 @@
 	as in free_lang_data_in_type.
 
 2012-07-04  Tobias Grosser <tobias@grosser.es>
-	Michael Matz  <matz@suse.de>
+	    Michael Matz  <matz@suse.de>
 
 	* Makefile.in (OBJS): Add graphite-optimize-isl.o.
 	(graphite-optimize-isl.o): Add dependencies.

gcc/ipa.c

@@ -449,11 +449,6 @@ symtab_remove_unreachable_nodes (bool before_inlining_p, FILE *file)
   verify_symtab ();
 #endif
 
-  /* If we removed something, perhaps profile could be improved.  */
-  if (changed && optimize && inline_edge_summary_vec)
-    FOR_EACH_DEFINED_FUNCTION (node)
-      cgraph_propagate_frequency (node);
-
   return changed;
 }
 

gcc/testsuite/ChangeLog

+2012-07-04  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR middle-end/53321
+	* g++.dg/torture/pr53321.C: New test.
+
 2012-07-04  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/53844

gcc/testsuite/g++.dg/torture/pr53321.C

+// { dg-do compile }
+// { dg-require-profiling "-fprofile-generate" }
+// { dg-options "-fprofile-generate" }
+
+typedef long unsigned int size_t;
+
+extern "C"
+{
+  extern void *memcpy (void *__dest, __const void *__src, size_t __n);
+}
+
+extern char *src, *sources;
+extern int n_sources;
+
+static void
+find_source (const char *file_name)
+{
+  memcpy (src, sources, n_sources * sizeof (*sources));
+}
+
+extern const char *gcov_read_string (void);
+
+static void read_graph_file (void)
+{
+  find_source (gcov_read_string ());
+}
+
+static void process_file (void)
+{
+  read_graph_file ();
+}
+
+int main ()
+{
+  process_file ();
+}