Makefile.in (CRTSTUFF_CFLAGS): Add -fno-unit-at-a-time

	* Makefile.in (CRTSTUFF_CFLAGS): Add -fno-unit-at-a-time
	(OBJS): Add callgraph.o
	(callgraph.o): New.
	* c-decl.c (expand_body_1): Break out from ...
	(expand_body): This one;  change calling convention
	(finish_function): Move some of expand_body logic here.
	(c_expand_deferred_function): Update call of expand_body
	(c_expand_stmt): Use c_expand_body_1.
	* c-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Define.
	* c-objc-commin.c (c_objc_common_finish_file): Use callgraph code.
	* c-tree.h (c_expand_body): Declare.
	* callgraph.c: New file.
	* flags.h (flag_unit_at_a_time): Declare.
	* langhooks.h (LANG_HOOKS_CALLGRAPH_LOWER_FUNCTION,
	LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION,
	LANG_HOOKS_CALLGRAPH_INITIALIZER): New macros.
	* langhooks.h (struct lang_hooks_for_callgraph): New.
	(struct lang_hooks): Add callgraph field.
	* toplev.c (flag_unit_at_a_time): New.
	(lang_independent_options): Add flag_unit_at_a_time.
	(process_options): Disable unit-at-a-time mode for frontends not
	supporting callgraph.
	* tree-inline.c (typedef struct inline_data): Add "decl"
	(expand_call_inline): Update callgraph.
	(optimize_inline_calls): Set id.decl.
	* tree.h (cgraph_finalize_function, cgraph_finalize_compilation_unit,
	cgraph_create_edges, dump_cgraph, cgraph_optimize, cgraph_remove_call
	cgraph_calls_p): Declare.
	* invoke.texi (-funit-at-a-time): Document

From-SVN: r62789

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index 32782c1722c..3118d2cfc69 100644
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -58,6 +58,15 @@ struct lang_hooks_for_tree_inlining
 							 union tree_node *));
 };
 
+struct lang_hooks_for_callgraph
+{
+  /* Function passed as argument is needed and will be compiled.
+     Lower the representation so the calls are explicit.  */
+  void (*lower_function) PARAMS ((union tree_node *));
+  /* Produce RTL for function passed as argument.  */
+  void (*expand_function) PARAMS ((union tree_node *));
+};
+
 /* Lang hooks for management of language-specific data or status
    when entering / leaving functions etc.  */
 struct lang_hooks_for_functions
@@ -353,6 +362,8 @@ struct lang_hooks
 
   struct lang_hooks_for_tree_inlining tree_inlining;
 
+  struct lang_hooks_for_callgraph callgraph;
+
   struct lang_hooks_for_tree_dump tree_dump;
 
   struct lang_hooks_for_decls decls;