2012-04-13 Paolo Carlini <paolo.carlini@oracle.com>

[pf3gnuchains/gcc-fork.git] / gcc / lto-cgraph.c

diff --git a/gcc/lto-cgraph.c b/gcc/lto-cgraph.c
index 833bf84..5e899bc 100644 (file)
--- a/gcc/lto-cgraph.c
+++ b/gcc/lto-cgraph.c
@@ -512,10 +512,17 @@ lto_output_node (struct lto_simple_output_block *ob, struct cgraph_node *node,
                     || referenced_from_other_partition_p (&node->ref_list, set, vset)), 1);
   bp_pack_value (&bp, node->lowered, 1);
   bp_pack_value (&bp, in_other_partition, 1);
-  bp_pack_value (&bp, node->alias && !boundary_p, 1);
+  /* Real aliases in a boundary become non-aliases. However we still stream
+     alias info on weakrefs. 
+     TODO: We lose a bit of information here - when we know that variable is
+     defined in other unit, we may use the info on aliases to resolve 
+     symbol1 != symbol2 type tests that we can do only for locally defined objects
+     otherwise.  */
+  bp_pack_value (&bp, node->alias && (!boundary_p || DECL_EXTERNAL (node->decl)), 1);
   bp_pack_value (&bp, node->frequency, 2);
   bp_pack_value (&bp, node->only_called_at_startup, 1);
   bp_pack_value (&bp, node->only_called_at_exit, 1);
+  bp_pack_value (&bp, node->tm_clone, 1);
   bp_pack_value (&bp, node->thunk.thunk_p && !boundary_p, 1);
   bp_pack_enum (&bp, ld_plugin_symbol_resolution,
                LDPR_NUM_KNOWN, node->resolution);
@@ -530,7 +537,8 @@ lto_output_node (struct lto_simple_output_block *ob, struct cgraph_node *node,
       streamer_write_uhwi_stream (ob->main_stream, node->thunk.fixed_offset);
       streamer_write_uhwi_stream (ob->main_stream, node->thunk.virtual_value);
     }
-  if ((node->alias || node->thunk.thunk_p) && !boundary_p)
+  if ((node->alias || node->thunk.thunk_p)
+      && (!boundary_p || (node->alias && DECL_EXTERNAL (node->decl))))
     {
       streamer_write_hwi_in_range (ob->main_stream, 0, 1,
                                        node->thunk.alias != NULL);
@@ -921,6 +929,7 @@ input_overwrite_node (struct lto_file_decl_data *file_data,
   node->frequency = (enum node_frequency)bp_unpack_value (bp, 2);
   node->only_called_at_startup = bp_unpack_value (bp, 1);
   node->only_called_at_exit = bp_unpack_value (bp, 1);
+  node->tm_clone = bp_unpack_value (bp, 1);
   node->thunk.thunk_p = bp_unpack_value (bp, 1);
   node->resolution = bp_unpack_enum (bp, ld_plugin_symbol_resolution,
                                     LDPR_NUM_KNOWN);
@@ -1680,9 +1689,9 @@ input_cgraph_opt_section (struct lto_file_decl_data *file_data,
 {
   const struct lto_function_header *header =
     (const struct lto_function_header *) data;
-  const int32_t cfg_offset = sizeof (struct lto_function_header);
-  const int32_t main_offset = cfg_offset + header->cfg_size;
-  const int32_t string_offset = main_offset + header->main_size;
+  const int cfg_offset = sizeof (struct lto_function_header);
+  const int main_offset = cfg_offset + header->cfg_size;
+  const int string_offset = main_offset + header->main_size;
   struct data_in *data_in;
   struct lto_input_block ib_main;
   unsigned int i;