varasm.c (set_implicit_section): New function.

	* varasm.c (set_implicit_section): New function.
	(resolve_unique_section): Use it to set implicit section
	for aliases, too.
	(get_named_text_section): Use symtab_get_node (decl)->implicit_section
	(default_function_section): Likewise.
	(decl_binds_to_current_def_p): Constify argument.
	* varasm.h (decl_binds_to_current_def_p): Update prototype.
	* asan.c (asan_protect_global): Use symtab_get_node (decl)->implicit_section.
	* symtab.c (dump_symtab_base): Dump implicit sections.
	(verify_symtab_base): Verify sanity of sectoins and comdats.
	(symtab_resolve_alias): Alias share the section of its target.
	(set_section_1): New function.
	(symtab_node::set_section): Move here, recurse to aliases.
	(verify_symtab): Check for duplicated symtab lists.
	* tree-core.h (implicit_section_name_p): Remove.
	* tree-vect-data-refs.c: Include varasm.h.
	(vect_can_force_dr_alignment_p): Fix conditional on when
	decl bints to current definition; use
	symtab_get_node (decl)->implicit_section.
	* cgraph.c (cgraph_make_node_local_1): Fix section set.
	* cgraph.h (struct symtab_node): Add implicit_section.
	(set_section): Rename to ...
	(set_section_for_node): ... this one.
	(set_section): Declare.
	* tree.h (DECL_HAS_IMPLICIT_SECTION_NAME_P): Remove.
	* lto-cgraph.c (lto_output_node, lto_output_varpool_node,
	input_overwrite_node, input_varpool_node): Stream implicit_section.
	* ipa.c (symtab_remove_unreachable_nodes): Do not check symtab before
	removal; it will fail in LTO.
	
	* vtable-class-hierarchy.c: Use symtab_get_node (var_decl)->implicit_section.
	* optimize.c (cdtor_comdat_group): Fix handling of aliases.
	(maybe_clone_body): Move symbol across comdat groups.
	* method.c (use_thunk): Copy implicit section flag.

	* go/go-gcc.cc (Gcc_backend::global_variable_set_init): Use
	symtab_get_node(var_decl)->implicit_section.

	* lto.c (read_cgraph_and_symbols): Remove unreachable symbols.
	(do_whole_program_analysis): Use verify_symtab.

From-SVN: r211434

1 files changed, 15 insertions, 5 deletions

diff --git a/gcc/varasm.c b/gcc/varasm.c
index 028e740..d56e67a 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -418,6 +418,15 @@ get_named_section (tree decl, const char *name, int reloc)
   return get_section (name, flags, decl);
 }
 
+/* Worker for resolve_unique_section.  */
+
+static bool
+set_implicit_section (struct symtab_node *n, void *data ATTRIBUTE_UNUSED)
+{
+  n->implicit_section = true;
+  return false;
+}
+
 /* If required, set DECL_SECTION_NAME to a unique name.  */
 
 void
@@ -430,7 +439,9 @@ resolve_unique_section (tree decl, int reloc ATTRIBUTE_UNUSED,
 	  || DECL_COMDAT_GROUP (decl)))
     {
       targetm.asm_out.unique_section (decl, reloc);
-      DECL_HAS_IMPLICIT_SECTION_NAME_P (decl) = true;
+      if (DECL_SECTION_NAME (decl))
+        symtab_for_node_and_aliases (symtab_get_node (decl),
+				     set_implicit_section, NULL, true);
     }
 }
 
@@ -510,7 +521,7 @@ get_named_text_section (tree decl,
 	  buffer = ACONCAT ((stripped_name, named_section_suffix, NULL));
 	  return get_named_section (decl, buffer, 0);
 	}
-      else if (DECL_HAS_IMPLICIT_SECTION_NAME_P (decl))
+      else if (symtab_get_node (decl)->implicit_section)
 	{
 	  const char *name;
 
@@ -539,8 +550,7 @@ default_function_section (tree decl, enum node_frequency freq,
   /* Old GNU linkers have buggy --gc-section support, which sometimes
      results in .gcc_except_table* sections being garbage collected.  */
   if (decl
-      && DECL_SECTION_NAME (decl)
-      && DECL_HAS_IMPLICIT_SECTION_NAME_P (decl))
+      && symtab_get_node (decl)->implicit_section)
     return NULL;
 #endif
 
@@ -6764,7 +6774,7 @@ default_binds_local_p_1 (const_tree exp, int shlib)
    definition from different object file) and when resolution info is available
    we simply use the knowledge passed to us by linker plugin.  */
 bool
-decl_binds_to_current_def_p (tree decl)
+decl_binds_to_current_def_p (const_tree decl)
 {
   gcc_assert (DECL_P (decl));
   if (!targetm.binds_local_p (decl))