2008-07-14  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-sccvn.c (pre_info): Remove.
	(switch_to_PRE_table): Likewise.
	(free_scc_vn): Do not clear SSA_NAME_VALUE.
	Do not free pre_info.
	(set_hashtable_value_ids): Do not create value-ids for the
	optimistic tables.
	(run_scc_vn): Remove double test.  Remove bogus special-case
	in value-number printing.
	* tree-ssa-sccvn.h (switch_to_PRE_table): Remove.
	* tree-ssa-ccp.c (get_symbol_constant_value): Do not look at
	SSA_NAME_VALUE.
	* tree-flow-inline.h (get_value_handle): Remove.
	* tree-flow.h (get_value_handle): Remove.

From-SVN: r137787