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, 5 insertions, 2 deletions

diff --git a/gcc/statistics.c b/gcc/statistics.c
index 3077cc0c36c..b198b3455fa 100644
--- a/gcc/statistics.c
+++ b/gcc/statistics.c
@@ -26,6 +26,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "statistics.h"
 #include "hash-table.h"
 #include "function.h"
+#include "context.h"
+#include "pass_manager.h"
 
 static int statistics_dump_nr;
 static int statistics_dump_flags;
@@ -235,6 +237,7 @@ statistics_fini_1 (statistics_counter_t **slot, opt_pass *pass)
 void
 statistics_fini (void)
 {
+  gcc::pass_manager *passes = g->get_passes ();
   if (!statistics_dump_file)
     return;
 
@@ -243,10 +246,10 @@ statistics_fini (void)
       unsigned i;
       for (i = 0; i < nr_statistics_hashes; ++i)
 	if (statistics_hashes[i].is_created ()
-	    && get_pass_for_id (i) != NULL)
+	    && passes->get_pass_for_id (i) != NULL)
 	  statistics_hashes[i]
 	    .traverse_noresize <opt_pass *, statistics_fini_1>
-	    (get_pass_for_id (i));
+	    (passes->get_pass_for_id (i));
     }
 
   dump_end (statistics_dump_nr, statistics_dump_file);