re PR tree-optimization/56398 (ICE (Segmentation fault) in dominated_by_p)

2013-02-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/56398
	* tree-vect-loop-manip.c (adjust_debug_stmts): Skip
	SSA default defs.

From-SVN: r196172

gcc/ChangeLog

+2013-02-20  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/56398
+	* tree-vect-loop-manip.c (adjust_debug_stmts): Skip
+	SSA default defs.
+
 2013-02-20  Martin Jambor  <mjambor@suse.cz>
 
 	PR tree-optimization/55334

gcc/tree-vect-loop-manip.c

@@ -187,6 +187,7 @@ adjust_debug_stmts (tree from, tree to, basic_block bb)
 
   if (MAY_HAVE_DEBUG_STMTS
       && TREE_CODE (from) == SSA_NAME
+      && ! SSA_NAME_IS_DEFAULT_DEF (from)
       && ! virtual_operand_p (from))
     {
       ai.from = from;