[patch 1/10] debug-early merge: Ada front-end

[Aldy Hernandez <aldyh at redhat dot com>]

gcc/ada/

	* gcc-interface/gigi.h (note_types_used_by_globals): New prototype.
	* gcc-interface/misc.c (gnat_parse_file): Call
	note_types_used_by_globals.
	* gcc-interface/utils.c: Remove global_decls.
	(gnat_pushdecl): Remove use of global_decls.
	(gnat_write_global_declarations): Rename to
	note_types_used_by_globals.
	Remove call to finalize_compilation_unit.
	Remove explicit call to debug_hooks.

diff --git a/gcc/ada/gcc-interface/gigi.h b/gcc/ada/gcc-interface/gigi.h
index 6d65fc5..fead2be 100644
--- a/gcc/ada/gcc-interface/gigi.h
+++ b/gcc/ada/gcc-interface/gigi.h
@@ -535,8 +535,7 @@ extern tree gnat_type_for_size (unsigned precision, int unsignedp);
    an unsigned type; otherwise a signed type is returned.  */
 extern tree gnat_type_for_mode (machine_mode mode, int unsignedp);
 
-/* Emit debug info for all global variable declarations.  */
-extern void gnat_write_global_declarations (void);
+extern void note_types_used_by_globals (void);
 
 /* Return the unsigned version of a TYPE_NODE, a scalar type.  */
 extern tree gnat_unsigned_type (tree type_node);
diff --git a/gcc/ada/gcc-interface/misc.c b/gcc/ada/gcc-interface/misc.c
index edaab97..2056a61 100644
--- a/gcc/ada/gcc-interface/misc.c
+++ b/gcc/ada/gcc-interface/misc.c
@@ -122,6 +122,8 @@ gnat_parse_file (void)
 
   /* Call the front end.  */
   _ada_gnat1drv ();
+
+  note_types_used_by_globals ();
 }
 
 /* Return language mask for option processing.  */
@@ -972,8 +974,6 @@ gnat_init_ts (void)
 #define LANG_HOOKS_GETDECLS		lhd_return_null_tree_v
 #undef  LANG_HOOKS_PUSHDECL
 #define LANG_HOOKS_PUSHDECL		gnat_return_tree
-#undef  LANG_HOOKS_WRITE_GLOBALS
-#define LANG_HOOKS_WRITE_GLOBALS	gnat_write_global_declarations
 #undef  LANG_HOOKS_GET_ALIAS_SET
 #define LANG_HOOKS_GET_ALIAS_SET	gnat_get_alias_set
 #undef  LANG_HOOKS_PRINT_DECL
diff --git a/gcc/ada/gcc-interface/utils.c b/gcc/ada/gcc-interface/utils.c
index 170aa4a..647b427 100644
--- a/gcc/ada/gcc-interface/utils.c
+++ b/gcc/ada/gcc-interface/utils.c
@@ -227,9 +227,6 @@ static GTY((deletable)) struct gnat_binding_level *free_binding_level;
 /* The context to be used for global declarations.  */
 static GTY(()) tree global_context;
 
-/* An array of global declarations.  */
-static GTY(()) vec<tree, va_gc> *global_decls;
-
 /* An array of builtin function declarations.  */
 static GTY(()) vec<tree, va_gc> *builtin_decls;
 
@@ -764,9 +761,7 @@ gnat_pushdecl (tree decl, Node_Id gnat_node)
 	  if (TREE_CODE (decl) == FUNCTION_DECL && DECL_BUILT_IN (decl))
 	    vec_safe_push (builtin_decls, decl);
 	}
-      else if (global_bindings_p ())
-	vec_safe_push (global_decls, decl);
-      else
+      else if (!global_bindings_p ())
 	{
 	  DECL_CHAIN (decl) = BLOCK_VARS (current_binding_level->block);
 	  BLOCK_VARS (current_binding_level->block) = decl;
@@ -5176,7 +5171,7 @@ smaller_form_type_p (tree type, tree orig_type)
 static GTY (()) tree dummy_global;
 
 void
-gnat_write_global_declarations (void)
+note_types_used_by_globals (void)
 {
   unsigned int i;
   tree iter;
@@ -5204,28 +5199,6 @@ gnat_write_global_declarations (void)
 	  types_used_by_var_decl_insert (t, dummy_global);
 	}
     }
-
-  /* Output debug information for all global type declarations first.  This
-     ensures that global types whose compilation hasn't been finalized yet,
-     for example pointers to Taft amendment types, have their compilation
-     finalized in the right context.  */
-  FOR_EACH_VEC_SAFE_ELT (global_decls, i, iter)
-    if (TREE_CODE (iter) == TYPE_DECL && !DECL_IGNORED_P (iter))
-      debug_hooks->global_decl (iter);
-
-  /* Proceed to optimize and emit assembly. */
-  symtab->finalize_compilation_unit ();
-
-  /* After cgraph has had a chance to emit everything that's going to
-     be emitted, output debug information for the rest of globals.  */
-  if (!seen_error ())
-    {
-      timevar_push (TV_SYMOUT);
-      FOR_EACH_VEC_SAFE_ELT (global_decls, i, iter)
-	if (TREE_CODE (iter) != TYPE_DECL && !DECL_IGNORED_P (iter))
-	  debug_hooks->global_decl (iter);
-      timevar_pop (TV_SYMOUT);
-    }
 }
 
 /* ************************************************************************