re PR tree-optimization/55334 (mgrid regression (ipa-cp disables vectorization))

re PR tree-optimization/55334 (mgrid regression (ipa-cp disables vectorization))

2014-11-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/55334
	* function.h (struct function): Add last_clique member.
	* tree-inline.c (remap_dependence_clique): New function.
	(remap_gimple_op_r): Remap dependence cliques in MEM_REFs.
	(copy_tree_body_r): Likewise.
	(copy_cfg_body): Free dependence map.
	(copy_gimple_seq_and_replace_locals): Likewise.
	* tree-pretty-print.c (dump_generic_node): Dump
	dependence info.
	* tree-ssa-alias.c (refs_may_alias_p_1): Use dependence info
	to answer alias query.
	* tree-ssa-structalias.c: Include tree-phinodes.h, ssa-iterators.h,
	tree-pretty-print.h and gimple-walk.h.
	(struct variable_info): Add is_restrict_var flag and ruid
	member.
	(new_var_info): Initialize is_restrict_var.
	(make_constraint_from_restrict): Likewise.
	(create_variable_info_for): Exclude restricts from global vars
	from new handling.
	(intra_create_variable_infos): But not those from parameters.
	(visit_loadstore): New function.
	(maybe_set_dependence_info): Likewise.
	(compute_dependence_clique): Likewise.
	(compute_may_aliases): Call compute_dependence_clique.
	* tree-data-ref.c (dr_analyze_indices): Copy dependence info
	to fake MEM_REF.
	(dr_may_alias_p): Use recorded dependence info to answer
	alias query.
	* tree-core.h (struct tree_base): Add clique, base struct in
	union.
	* tree.h (MR_DEPENDENCE_CLIQUE): New macro.
	(MR_DEPENDENCE_BASE): Likewise.
	* tree-inline.h (dependence_hasher): New hash-map kind.
	(struct copy_body_data): Add dependence_map pointer.
	* gimple-fold.c (maybe_canonicalize_mem_ref_addr): Avoid
	throwing away dependence info.
	* tree-streamer-in.c (unpack_value_fields): Stream dependence info.
	* tree-streamer-out.c (streamer_pack_tree_bitfields): Likewise.

	* gcc.dg/tree-ssa/restrict-5.c: New testcase.

From-SVN: r218004