Split out LTO's writing of top level asm nodes in preparation of extending

what needs to be written out when top level asm-s get enhanced to accept a
limited set of input operands.

gcc/
2011-09-30  Jan Beulich  <jbeulich@suse.com>

	* lto-cgraph.c (output_cgraph): Remove processing of
	'cgraph_asm_nodes', call lto_output_toplevel_asms() instead.
	(input_cgraph_1): Remove loop calling cgraph_add_asm_node(), call
	lto_input_toplevel_asms() instead.
	* lto-section-in.c (lto_section_name): Add "asm" entry.
	* lto-streamer-in.c (lto_input_toplevel_asms): New.
	* lto-streamer-out.c (lto_output_toplevel_asms): New.
	* lto-streamer.h (LTO_minor_version): Bump.
	(enum lto_section_type): Add LTO_section_asm.
	(struct lto_asm_header): New.
	(lto_input_toplevel_asms, lto_output_toplevel_asms): Declare.
	* tree-streamer.h (streamer_write_string_cst): Declare.
	* tree-streamer-out.c (write_string_cst): Rename to
	streamer_write_string_cst and make global. Handle incoming string
	being NULL.
	(streamer_write_tree_header): Adjust call to renamed function.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@179386 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 21 insertions, 1 deletions

diff --git a/gcc/lto-streamer.h b/gcc/lto-streamer.h
index 2564bd2ec21..ee818429328 100644
--- a/gcc/lto-streamer.h
+++ b/gcc/lto-streamer.h
@@ -142,7 +142,7 @@ along with GCC; see the file COPYING3.  If not see
 #define LTO_SECTION_NAME_PREFIX         ".gnu.lto_"
 
 #define LTO_major_version 2
-#define LTO_minor_version 0
+#define LTO_minor_version 1
 
 typedef unsigned char	lto_decl_flags_t;
 
@@ -238,6 +238,7 @@ enum lto_section_type
   LTO_section_cgraph,
   LTO_section_varpool,
   LTO_section_refs,
+  LTO_section_asm,
   LTO_section_jump_functions,
   LTO_section_ipa_pure_const,
   LTO_section_ipa_reference,
@@ -387,6 +388,23 @@ struct lto_decl_header
 };
 
 
+/* Structure describing top level asm()s.  */
+struct lto_asm_header
+{
+  /* The header for all types of sections. */
+  struct lto_header lto_header;
+
+  /* Size compressed or 0 if not compressed.  */
+  int32_t compressed_size;
+
+  /* Size of region for expressions, decls, types, etc. */
+  int32_t main_size;
+
+  /* Size of the string table.  */
+  int32_t string_size;
+};
+
+
 /* Statistics gathered during LTO, WPA and LTRANS.  */
 struct lto_stats_d
 {
@@ -789,6 +807,7 @@ extern void lto_input_function_body (struct lto_file_decl_data *, tree,
 				     const char *);
 extern void lto_input_constructors_and_inits (struct lto_file_decl_data *,
 					      const char *);
+extern void lto_input_toplevel_asms (struct lto_file_decl_data *);
 extern struct data_in *lto_data_in_create (struct lto_file_decl_data *,
 				    const char *, unsigned,
 				    VEC(ld_plugin_symbol_resolution_t,heap) *);
@@ -807,6 +826,7 @@ extern void lto_register_decl_definition (tree, struct lto_file_decl_data *);
 extern struct output_block *create_output_block (enum lto_section_type);
 extern void destroy_output_block (struct output_block *);
 extern void lto_output_tree (struct output_block *, tree, bool);
+extern void lto_output_toplevel_asms (void);
 extern void produce_asm (struct output_block *ob, tree fn);
 void lto_output_decl_state_streams (struct output_block *,
 				    struct lto_out_decl_state *);