tree-ssa-math-opts.c (execute_optimize_widening_mul): Unlink virtual operands.

2010-12-07  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-math-opts.c (execute_optimize_widening_mul): Unlink
	virtual operands.

From-SVN: r167530

gcc/ChangeLog

+2010-12-07  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-math-opts.c (execute_optimize_widening_mul): Unlink
+	virtual operands.
+
 2010-12-07  Nicola Pero  <nicola.pero@meta-innovation.com>
 
 	* c-parser.c (c_parser_typeof_specifier): Removed special

gcc/tree-ssa-math-opts.c

@@ -1726,6 +1726,7 @@ execute_optimize_widening_mul (void)
 						    gimple_call_arg (stmt, 0),
 						    gimple_call_arg (stmt, 0)))
 			  {
+			    unlink_stmt_vdef (stmt);
 			    gsi_remove (&gsi, true);
 			    release_defs (stmt);
 			    if (gimple_purge_dead_eh_edges (bb))