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.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@201351 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 8 deletions

diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c
index b82c2e01b57..ca36937a819 100644
--- a/gcc/cgraphunit.c
+++ b/gcc/cgraphunit.c
@@ -194,6 +194,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "except.h"
 #include "cfgloop.h"
 #include "regset.h"     /* FIXME: For reg_obstack.  */
+#include "context.h"
+#include "pass_manager.h"
 
 /* Queue of cgraph nodes scheduled to be added into cgraph.  This is a
    secondary queue used during optimization to accommodate passes that
@@ -478,6 +480,7 @@ cgraph_finalize_function (tree decl, bool nested)
 void
 cgraph_add_new_function (tree fndecl, bool lowered)
 {
+  gcc::pass_manager *passes = g->get_passes ();
   struct cgraph_node *node;
   switch (cgraph_state)
     {
@@ -508,7 +511,7 @@ cgraph_add_new_function (tree fndecl, bool lowered)
 	    push_cfun (DECL_STRUCT_FUNCTION (fndecl));
 	    gimple_register_cfg_hooks ();
 	    bitmap_obstack_initialize (NULL);
-	    execute_pass_list (all_lowering_passes);
+	    execute_pass_list (passes->all_lowering_passes);
 	    execute_pass_list (pass_early_local_passes.pass.sub);
 	    bitmap_obstack_release (NULL);
 	    pop_cfun ();
@@ -640,7 +643,7 @@ analyze_function (struct cgraph_node *node)
 
 	  gimple_register_cfg_hooks ();
 	  bitmap_obstack_initialize (NULL);
-	  execute_pass_list (all_lowering_passes);
+	  execute_pass_list (g->get_passes ()->all_lowering_passes);
 	  free_dominance_info (CDI_POST_DOMINATORS);
 	  free_dominance_info (CDI_DOMINATORS);
 	  compact_blocks ();
@@ -1588,7 +1591,7 @@ expand_function (struct cgraph_node *node)
   /* Signal the start of passes.  */
   invoke_plugin_callbacks (PLUGIN_ALL_PASSES_START, NULL);
 
-  execute_pass_list (all_passes);
+  execute_pass_list (g->get_passes ()->all_passes);
 
   /* Signal the end of passes.  */
   invoke_plugin_callbacks (PLUGIN_ALL_PASSES_END, NULL);
@@ -1807,6 +1810,8 @@ output_in_order (void)
 static void
 ipa_passes (void)
 {
+  gcc::pass_manager *passes = g->get_passes ();
+
   set_cfun (NULL);
   current_function_decl = NULL;
   gimple_register_cfg_hooks ();
@@ -1816,7 +1821,7 @@ ipa_passes (void)
 
   if (!in_lto_p)
     {
-      execute_ipa_pass_list (all_small_ipa_passes);
+      execute_ipa_pass_list (passes->all_small_ipa_passes);
       if (seen_error ())
 	return;
     }
@@ -1843,14 +1848,15 @@ ipa_passes (void)
       cgraph_process_new_functions ();
 
       execute_ipa_summary_passes
-	((struct ipa_opt_pass_d *) all_regular_ipa_passes);
+	((struct ipa_opt_pass_d *) passes->all_regular_ipa_passes);
     }
 
   /* Some targets need to handle LTO assembler output specially.  */
   if (flag_generate_lto)
     targetm.asm_out.lto_start ();
 
-  execute_ipa_summary_passes ((struct ipa_opt_pass_d *) all_lto_gen_passes);
+  execute_ipa_summary_passes ((struct ipa_opt_pass_d *)
+			      passes->all_lto_gen_passes);
 
   if (!in_lto_p)
     ipa_write_summaries ();
@@ -1859,7 +1865,7 @@ ipa_passes (void)
     targetm.asm_out.lto_end ();
 
   if (!flag_ltrans && (in_lto_p || !flag_lto || flag_fat_lto_objects))
-    execute_ipa_pass_list (all_regular_ipa_passes);
+    execute_ipa_pass_list (passes->all_regular_ipa_passes);
   invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_END, NULL);
 
   bitmap_obstack_release (NULL);
@@ -1985,7 +1991,7 @@ compile (void)
 
   cgraph_materialize_all_clones ();
   bitmap_obstack_initialize (NULL);
-  execute_ipa_pass_list (all_late_ipa_passes);
+  execute_ipa_pass_list (g->get_passes ()->all_late_ipa_passes);
   symtab_remove_unreachable_nodes (true, dump_file);
 #ifdef ENABLE_CHECKING
   verify_symtab ();