re PR gcov-profile/50127 (g++.dg/tree-prof/partition2.C FAILs on several targets)

	PR gcov-profile/50127
	* bb-reorder.c (partition_hot_cold_basic_blocks): Call
	clear_aux_for_blocks.

From-SVN: r182973

gcc/ChangeLog

+2012-01-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR gcov-profile/50127
+	* bb-reorder.c (partition_hot_cold_basic_blocks): Call
+	clear_aux_for_blocks.
+
 2012-01-06  Alexandre Oliva  <aoliva@redhat.com>
 
 	PR debug/51746

gcc/bb-reorder.c

 /* Basic block reordering routines for the GNU compiler.
-   Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011,
+   2012 Free Software Foundation, Inc.
 
    This file is part of GCC.
 
@@ -2254,6 +2254,9 @@ partition_hot_cold_basic_blocks (void)
 
   add_reg_crossing_jump_notes ();
 
+  /* Clear bb->aux fields that the above routines were using.  */
+  clear_aux_for_blocks ();
+
   VEC_free (edge, heap, crossing_edges);
 
   /* ??? FIXME: DF generates the bb info for a block immediately.