* tree-ssa-dom.c (update_rhs_and_lookup_avail_expr): Kill.

	* tree-ssa-dom.c (update_rhs_and_lookup_avail_expr): Kill.
	(simplify_rhs_and_lookup_avail_expr): Kill.  Remnants moved
	into tree-ssa-forwprop.c.
	(eliminate_redundant_computations): Do not call
	simplify_rhs_and_lookup_avail_expr anymore.
	* tree-ssa-forwprop.c (simplify_not_neg_expr): New function
	extracted from remnants of simplify_rhs_and_lookup_avail_expr.
	(tree_ssa_forward_propagate_single_use_vars): Call
	simplify_not_neg_expr appropriately.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@108711 138bc75d-0d04-0410-961f-82ee72b054a4