Introduce beginnings of a pass_manager class.

This patch introduces a gcc::pass_manager class and moves various non-GTY
globals relating to pass management into it.  The gcc::context gains its
first field: a pointer to the gcc::pass_manager instance.

gcc/
	* Makefile.in (PASS_MANAGER_H): New.
	(lto-cgraph.o): Depend on CONTEXT_H and PASS_MANAGER_H.
	(passes.o): Likewise.
	(statistics.o): Likewise.
	(cgraphunit.o): Likewise.
	(context.o): Depend on PASS_MANAGER_H.

	* pass_manager.h: New.

	* cgraphunit.c (cgraph_add_new_function): Update for moves
	of globals to fields of pass_manager.
	(analyze_function): Likewise.
	(expand_function): Likewise.
	(ipa_passes): Likewise.
	(compile): Likewise.

	* context.c (context::context): New.
	* context.h  (context::context): New.
	(context::get_passes): New.
	(context::passes_): New.

	* lto-cgraph.c (input_node): Update for moves of globals to
	fields of pass_manager.

	* passes.c (all_passes): Remove, in favor of a field of the
	same name within the new class pass_manager.
	(all_small_ipa_passes): Likewise.
	(all_lowering_passes): Likewise.
	(all_regular_ipa_passes): Likewise.
	(all_late_ipa_passes): Likewise.
	(all_lto_gen_passes): Likewise.
	(passes_by_id): Likewise.
	(passes_by_id_size): Likewise.
	(gcc_pass_lists): Remove, in favor of "pass_lists" field within
	the new class pass_manager.
	(set_pass_for_id): Convert to...
	(pass_manager::set_pass_for_id): ...method.
	(get_pass_for_id): Convert to...
	(pass_manager::get_pass_for_id): ...method.
	(register_one_dump_file): Move body of implementation into...
	(pass_manager::register_one_dump_file): ...here.
	(register_dump_files_1): Convert to...
	(pass_manager::register_dump_files_1): ...method.
	(register_dump_files): Convert to...
	(pass_manager::register_dump_files): ...method.
	(create_pass_tab): Update for moves of globals to fields of
	pass_manager.
	(dump_passes): Move body of implementation into...
	(pass_manager::dump_passes): ...here.
	(register_pass): Move body of implementation into...
	(pass_manager::register_pass): ...here.
	(init_optimization_passes): Convert into...
	(pass_manager::pass_manager): ...constructor for new
	pass_manager class, and initialize the pass_lists array.
	(check_profile_consistency): Update for moves of globals to
	fields of pass_manager.
	(dump_profile_report): Move body of implementation into...
	(pass_manager::dump_profile_report): ...here.
	(ipa_write_summaries_1): Update for moves of pass lists from
	being globals to fields of pass_manager.
	(ipa_write_optimization_summaries): Likewise.
	(ipa_read_summaries):  Likewise.
	(ipa_read_optimization_summaries): Likewise.
	(execute_all_ipa_stmt_fixups): Likewise.

	* statistics.c (statistics_fini): Update for moves of globals to
	fields of pass_manager.

	* toplev.c (general_init): Replace call to
	init_optimization_passes with construction of the pass_manager
	instance.

	* tree-pass.h (all_passes): Remove, in favor of a field of the
	same name within the new class pass_manager.
	(all_small_ipa_passes): Likewise.
	(all_lowering_passes): Likewise.
	(all_regular_ipa_passes): Likewise.
	(all_lto_gen_passes): Likewise.
	(all_late_ipa_passes): Likewise.
	(passes_by_id): Likewise.
	(passes_by_id_size): Likewise.
	(gcc_pass_lists): Remove, in favor of "pass_lists" field within
	the new class pass_manager.
	(get_pass_for_id): Remove.

gcc/lto/

	* Make-lang.in (lto/lto.o:): Depend on CONTEXT_H and
	PASS_MANAGER_H.

	* lto.c (do_whole_program_analysis): Update for move of
	all_regular_ipa_passes from a global to a field of class
	pass_manager.

From-SVN: r201351

1 files changed, 10 insertions, 1 deletions

diff --git a/gcc/context.h b/gcc/context.h
index 3caf02fed31..66260cd279a 100644
--- a/gcc/context.h
+++ b/gcc/context.h
@@ -22,14 +22,23 @@ along with GCC; see the file COPYING3.  If not see
 
 namespace gcc {
 
+class pass_manager;
+
 /* GCC's internal state can be divided into zero or more
    "parallel universe" of state; an instance of this class is one such
    context of state.  */
 class context
 {
 public:
+  context();
+
+  /* Pass-management.  */
+
+  pass_manager *get_passes () { gcc_assert (passes_); return passes_; }
 
-  /* Currently empty.  */
+private:
+  /* Pass-management.  */
+  pass_manager *passes_;
 
 }; // class context