2009-07-02  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-live.c (remove_unused_locals): Do not remove
	heap variables.
	* tree-ssa-structalias.c (handle_lhs_call): Delay setting
	of DECL_EXTERNAL for HEAP variables.
	(compute_points_to_sets): Set DECL_EXTERNAL for escaped
	HEAP variables.  Do not adjust RESTRICT vars.
	(find_what_var_points_to): Nobody cares if something
	points to READONLY.

From-SVN: r149170