tree-optimization/98866 - Compile time hog in VRP

tree-optimization/98866 - Compile time hog in VRP

Don't track [1, +INF] for pointer types, treat them as invariant for caching
purposes as they cannot be further refined without evaluating to UNDEFINED.

	PR tree-optimization/98866
	* gimple-range-gori.h (gori_compute:set_range_invariant): New.
	* gimple-range-gori.cc (gori_map::set_range_invariant): New.
	(gori_map::m_maybe_invariant): Rename from all_outgoing.
	(gori_map::gori_map): Rename all_outgoing to m_maybe_invariant.
	(gori_map::is_export_p): Ditto.
	(gori_map::calculate_gori): Ditto.
	(gori_compute::set_range_invariant): New.
	* gimple-range.cc (gimple_ranger::range_of_stmt): Set range
	invariant for pointers evaluating to [1, +INF].