tree-vect-stmts.c (free_stmt_vec_info): Clear BB and release SSA defs of pattern stmts.

2014-02-17  Richard Biener  <rguenther@suse.de>

	* tree-vect-stmts.c (free_stmt_vec_info): Clear BB and
	release SSA defs of pattern stmts.

From-SVN: r207826

gcc/ChangeLog

 2014-02-17  Richard Biener  <rguenther@suse.de>
 
+	* tree-vect-stmts.c (free_stmt_vec_info): Clear BB and
+	release SSA defs of pattern stmts.
+
+2014-02-17  Richard Biener  <rguenther@suse.de>
+
 	* tree-inline.c (expand_call_inline): Release the virtual
 	operand defined by the call we are about to inline.
 

gcc/tree-vect-stmts.c

@@ -7389,13 +7389,25 @@ free_stmt_vec_info (gimple stmt)
       if (patt_info)
 	{
 	  gimple_seq seq = STMT_VINFO_PATTERN_DEF_SEQ (patt_info);
+	  gimple patt_stmt = STMT_VINFO_STMT (patt_info);
+	  gimple_set_bb (patt_stmt, NULL);
+	  tree lhs = gimple_get_lhs (patt_stmt);
+	  if (TREE_CODE (lhs) == SSA_NAME)
+	    release_ssa_name (lhs);
 	  if (seq)
 	    {
 	      gimple_stmt_iterator si;
 	      for (si = gsi_start (seq); !gsi_end_p (si); gsi_next (&si))
-		free_stmt_vec_info (gsi_stmt (si));
+		{
+		  gimple seq_stmt = gsi_stmt (si);
+		  gimple_set_bb (seq_stmt, NULL);
+		  lhs = gimple_get_lhs (patt_stmt);
+		  if (TREE_CODE (lhs) == SSA_NAME)
+		    release_ssa_name (lhs);
+		  free_stmt_vec_info (seq_stmt);
+		}
 	    }
-	  free_stmt_vec_info (STMT_VINFO_RELATED_STMT (stmt_info));
+	  free_stmt_vec_info (patt_stmt);
 	}
     }