* symtab.c (insert_to_assembler_name_hash): Do not insert

	register vars.
	(unlink_from_assembler_name_hash): NULL out pointers of unlinked
	var.
	(symtab_prevail_in_asm_name_hash): New.
	(symtab_initialize_asm_name_hash): Break out from ...
	(symtab_node_for_asm): ... here.
	(dump_symtab_base): Dump LTO file data.
	(verify_symtab_base): Register vars are not in symtab.
	* cgraph.h (symtab_initialize_asm_name_hash,
	symtab_prevail_in_asm_name_hash): New functions.
	(symtab_real_symbol_p): New inline.
	* lto-symtab.c: Do not include gt-lto-symtab.h.
	(lto_symtab_entry_def): Remove.
	(lto_symtab_entry_t): Remove.
	(lto_symtab_identifiers): Remove.
	(lto_symtab_free): Remove.
	(lto_symtab_entry_hash): Remove.
	(lto_symtab_entry_eq): Remove.
	(lto_symtab_entry_marked_p): Remove.
	(lto_symtab_maybe_init_hash_table): Remove.
	(resolution_guessed_p, set_resolution_guessed): New functions.
	(lto_symtab_register_decl): Only set resolution info.
	(lto_symtab_get, lto_symtab_get_resolution): Remove.
	(lto_symtab_merge): Reorg to work across symtab; do nothing if decls
	are same.
	(lto_symtab_resolve_replaceable_p): Reorg to work on symtab.
	(lto_symtab_resolve_can_prevail_p): Likewise; only real symbols can
	prevail.
	(lto_symtab_resolve_symbols): Reorg to work on symtab.
	(lto_symtab_merge_decls_2): Likewise.
	(lto_symtab_merge_decls_1): Likewise; add debug dumps.
	(lto_symtab_merge_decls): Likewise; do not merge at ltrans stage.
	(lto_symtab_merge_cgraph_nodes_1): Reorg to work on symtab.
	(lto_symtab_merge_cgraph_nodes): Likewise; do not merge at ltrans stage.
	(lto_symtab_prevailing_decl): Rewrite to lookup into symtab.
	* lto-streaer.h (lto_symtab_free): Remove.
	* lto-cgraph.c (add_references): Cleanup.
	* varpool.c (varpool_assemble_decl): Skip hard regs.

	* lto.c (lto_materialize_function): Update confused comment.
	(read_cgraph_and_symbols): Do not free symtab.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@191466 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 25 insertions, 0 deletions

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index 0d2ad41c43a..b8001a62bc7 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -704,6 +704,8 @@ bool varpool_for_node_and_aliases (struct varpool_node *,
 		                   bool (*) (struct varpool_node *, void *),
 			           void *, bool);
 void varpool_add_new_variable (tree);
+void symtab_initialize_asm_name_hash (void);
+void symtab_prevail_in_asm_name_hash (symtab_node node);
 
 /* Return true when NODE is function.  */
 static inline bool
@@ -1309,4 +1311,27 @@ cgraph_mark_force_output_node (struct cgraph_node *node)
   gcc_checking_assert (!node->global.inlined_to);
 }
 
+/* Return true when the symbol is real symbol, i.e. it is not inline clone
+   or extern function kept around just for inlining.  */
+
+static inline bool
+symtab_real_symbol_p (symtab_node node)
+{
+  struct cgraph_node *cnode;
+  struct ipa_ref *ref;
+
+  if (!symtab_function_p (node))
+    return true;
+  cnode = cgraph (node);
+  if (cnode->global.inlined_to)
+    return false;
+  if (cnode->abstract_and_needed)
+    return false;
+  /* We keep virtual clones in symtab.  */
+  if (!cnode->analyzed
+      || DECL_EXTERNAL (cnode->symbol.decl))
+    return (cnode->callers
+	    || ipa_ref_list_referring_iterate (&cnode->symbol.ref_list, 0, ref));
+  return true;
+}
 #endif  /* GCC_CGRAPH_H  */