[PATCH][LTO] Remove set-but-unused fields

[Richard Biener]

Bootstrapped on x86_64-unknown-linux-gnu, applied.

Richard.

2014-07-31  Richard Biener  <rguent...@suse.de>

        * lto-streamer.h (struct output_block): Remove global.
        (struct data_in): Remove labels, num_named_labels and
        num_unnamed_labels.
        * lto-streamer-in.c (lto_data_in_delete): Do not free labels.
        * lto-streamer-out.c (produce_asm_for_decls): Do not set global.

Index: gcc/lto-streamer.h
===================================================================
--- gcc/lto-streamer.h  (revision 213317)
+++ gcc/lto-streamer.h  (working copy)
@@ -696,9 +696,6 @@ struct output_block
   int current_line;
   int current_col;
 
-  /* True if writing globals and types.  */
-  bool global;
-
   /* Cache of nodes written in this section.  */
   struct streamer_tree_cache_d *writer_cache;
 
@@ -714,22 +711,12 @@ struct data_in
   /* The global decls and types.  */
   struct lto_file_decl_data *file_data;
 
-  /* All of the labels.  */
-  tree *labels;
-
   /* The string table.  */
   const char *strings;
 
   /* The length of the string table.  */
   unsigned int strings_len;
 
-  /* Number of named labels.  Used to find the index of unnamed labels
-     since they share space with the named labels.  */
-  unsigned int num_named_labels;
-
-  /* Number of unnamed labels.  */
-  unsigned int num_unnamed_labels;
-
   /* Maps each reference number to the resolution done by the linker. */
   vec<ld_plugin_symbol_resolution_t> globals_resolution;
 
Index: gcc/lto-streamer-in.c
===================================================================
--- gcc/lto-streamer-in.c       (revision 213317)
+++ gcc/lto-streamer-in.c       (working copy)
@@ -1427,6 +1427,5 @@ lto_data_in_delete (struct data_in *data
 {
   data_in->globals_resolution.release ();
   streamer_tree_cache_delete (data_in->reader_cache);
-  free (data_in->labels);
   free (data_in);
 }
Index: gcc/lto-streamer-out.c
===================================================================
--- gcc/lto-streamer-out.c      (revision 213317)
+++ gcc/lto-streamer-out.c      (working copy)
@@ -2632,7 +2632,6 @@ produce_asm_for_decls (void)
   int32_t num_decl_states;
 
   ob = create_output_block (LTO_section_decls);
-  ob->global = true;
 
   memset (&header, 0, sizeof (struct lto_decl_header));