IPA-CP Alignment lattice cleanup

IPA-CP Alignment lattice cleanup

2015-10-05  Martin Jambor  <mjambor@suse.cz>
	    Jan Hubicka  <hubicka@ucw.cz>

	* ipa-cp.c (ipcp_alignment_lattice): New type.
	(ipcp_param_lattices): Use the above to represent alignment.
	(ipcp_alignment_lattice::print): New function.
	(print_all_lattices): Use it to print alignment information.
	(ipcp_alignment_lattice::top_p): New function.
	(ipcp_alignment_lattice::bottom_p): Likewise.
	(ipcp_alignment_lattice::set_to_bottom): Likewise.
	(ipcp_alignment_lattice::meet_with_1): Likewise.
	(ipcp_alignment_lattice::meet_with): Two new overloaded functions.
	(set_all_contains_variable): Use set_to_bottom of alignment lattice.
	(initialize_node_lattices): Likewise.
	(propagate_alignment_accross_jump_function): Work with the new class
	for alignment lattices.
	(propagate_constants_accross_call): Pass only the alignment lattice to
	propagate_alignment_accross_jump_function.
	(ipcp_store_alignment_results): Work with the new class for alignment
	lattices.

testsuite/
	* gcc.dg/ipa/propalign-4.c: New test.
	* gcc.dg/ipa/propalign-5.c: Likewise.

Co-Authored-By: Jan Hubicka <hubicka@ucw.cz>
From-SVN: r228491