[multiple changes]

2009-09-01  Diego Novillo  <dnovillo@google.com>

	* c-lang.c (lang_hooks): Remove const qualifier.

java/ChangeLog

	* lang.c (lang_hooks): Remove const qualifier.

objc/ChangeLog

	* objc-lang.c (lang_hooks): Remove const qualifier.

objcp/ChangeLog

	* objcp-lang.c (lang_hooks): Remove const qualifier.

ada/ChangeLog

	* gcc-interface/misc.c (lang_hooks): Remove const qualifier.

fortran/ChangeLog

	* f95-lang.c (lang_hooks): Remove const qualifier.

cp/ChangeLog

	* cp-lang.c (lang_hooks): Remove const qualifier.

2009-09-01  Diego Novillo  <dnovillo@google.com>

	* cgraph.c (cgraph_node_for_decl): New.
	* cgraph.h (cgraph_node_for_decl): Declare.
	* tree.c (host_integerp): Return 0 if T is NULL.


2009-09-01  Diego Novillo  <dnovillo@google.com>

	* tree.h (struct alias_pair): Move from varasm.c.
	(alias_pairs): Likewise.
	(TYPE_MAXVAL): Define.
	(TYPE_MINVAL): Define.
	(iterative_hash_host_wide_int): Declare.
	(remove_unreachable_alias_pairs): Declare.
	* tree-pass.h (pass_ipa_free_lang_data): Declare.
	* diagnostic.c (default_diagnostic_starter): Make extern.
	(default_diagnostic_finalizer): Make extern.
	* diagnostic.h (default_diagnostic_starter): Declare.
	(default_diagnostic_finalizer): Declare.
	(default_tree_printer): Declare.
	* toplev.c (default_tree_printer): Make extern.


2009-09-01  Richard Guenther  <rguenther@suse.de>
	    Diego Novillo  <dnovillo@google.com>

	* cgraph.c (cgraph_add_new_function): Remove gimplification.
	* cgraphunit.c (cgraph_expand_function): Do not emit
	associated thunks from here.
	(cgraph_emit_thunks): New.
	(cgraph_optimize): Call it.
	Return if any IPA pass finds an error.
	* varasm.c (finish_aliases_1): Ignore errorneous aliases used
	by thunks.


2009-09-01  Simon Baldwin  <simonb@google.com>
	    Rafael Espindola  <espindola@google.com>
	    Richard Guenther  <rguenther@suse.de>
	    Doug Kwan  <dougkwan@google.com>
	    Diego Novillo  <dnovillo@google.com>

	* tree.c: Include tree-pass.h, langhooks-def.h,
	diagnostic.h, cgraph.h, timevar.h, except.h and debug.h.
	(free_lang_data_in_type): New.
	(need_assembler_name_p): New.
	(free_lang_data_in_block): New.
	(free_lang_data_in_decl): New.
	(struct free_lang_data_d): New.
	(add_tree_to_fld_list): New.
	(find_decls_types_r): New.
	(get_eh_types_for_runtime): New.
	(find_decls_types_in_eh_region): New.
	(find_decls_types_in_node): New.
	(find_decls_types_in_var): New.
	(free_lang_data_in_cgraph): New.
	(free_lang_data): New.
	(gate_free_lang_data): New.
	(pass_ipa_free_lang_data): New.

2009-09-01  Diego Novillo  <dnovillo@google.com>

	* timevar.def (TV_IPA_FREE_LANG_DATA): Define.
	* langhooks.h (struct lang_hooks): Add field free_lang_data.
	(lang_hooks): Remove const qualifier.
	* ipa.c (cgraph_remove_unreachable_nodes): Call
	remove_unreachable_alias_pairs.
	* except.c (add_type_for_runtime): Check if TYPE has
	already been converted.
	(lookup_type_for_runtime): Likewise.
	(check_handled): Handle converted types.
	* varasm.c (remove_unreachable_alias_pairs): New.
	* gimple.c: Include demangle.h.
	(gimple_decl_printable_name): New.
	(gimple_fold_obj_type_ref): New.
	* gimple.h (gimple_decl_printable_name): Declare.
	(gimple_fold_obj_type_ref): Declare.
	* passes.c (init_optimization_passes): Add pass
	pass_ipa_free_lang_data.
	* langhooks-def.h (LANG_HOOKS_FREE_LANG_DATA): Define.
	(LANG_HOOKS_INITIALIZER): Add LANG_HOOKS_FREE_LANG_DATA.

testsuite/ChangeLog

2009-09-01  Diego Novillo  <dnovillo@google.com>

	* gcc.dg/gomp/combined-1.c: Adjust expected pattern.
	* g++.dg/tree-prof/inline_mismatch_args.C: Likewise.
	* g++.dg/warn/unit-1.C: Likewise.
	* g++.dg/ipa/iinline-1.C: Likewise.
	* g++.dg/template/cond2.C: Adjust expected line location for the
	error.
	* g++.dg/template/pr35240.C: Likewise.


cp/ChangeLog

2009-09-01  Doug Kwan  <dougkwan@google.com>

	* tree.c (cp_fix_function_decl_p): New.
	(cp_free_lang_data): New.

2009-09-01  Diego Novillo  <dnovillo@google.com>

	* Make-lang.in (decl2.o): Add dependency on $(POINTER_SET_H).
	* decl2.c: Include pointer-set.h.
	(collect_candidates_for_java_method_aliases): New.
	(cp_write_global_declarations): Call it.
	Add local variable CANDIDATES.  If set, call
	build_java_method_aliases.
	(build_java_method_aliases): Add argument CANDIDATES.
	Use it to determine if FNDECL should get a hidden alias.
	* cp-objcp-common.h (LANG_HOOKS_FREE_LANG_DATA): Define.
	* cp-tree.h (cp_free_lang_data): Declare.

2009-09-03  Richard Guenther  <rguenther@suse.de>

	* method.c (use_thunk): Use cgraph_finalize_function to hand
	off thunks to the cgraph.
	* semantics.c (emit_associated_thunks): Do not emit thunks
	for really extern functions.

From-SVN: r151360

1 files changed, 39 insertions, 14 deletions

diff --git a/gcc/varasm.c b/gcc/varasm.c
index 2a8fb11..d7f8611 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -5369,20 +5369,7 @@ globalize_decl (tree decl)
   targetm.asm_out.globalize_decl_name (asm_out_file, decl);
 }
 
-/* We have to be able to tell cgraph about the needed-ness of the target
-   of an alias.  This requires that the decl have been defined.  Aliases
-   that precede their definition have to be queued for later processing.  */
-
-typedef struct GTY(()) alias_pair {
-  tree decl;
-  tree target;
-} alias_pair;
-
-/* Define gc'd vector type.  */
-DEF_VEC_O(alias_pair);
-DEF_VEC_ALLOC_O(alias_pair,gc);
-
-static GTY(()) VEC(alias_pair,gc) *alias_pairs;
+VEC(alias_pair,gc) *alias_pairs;
 
 /* Given an assembly name, find the decl it is associated with.  At the
    same time, mark it needed for cgraph.  */
@@ -5526,6 +5513,39 @@ do_assemble_alias (tree decl, tree target)
 #endif
 }
 
+
+/* Remove the alias pairing for functions that are no longer in the call
+   graph.  */
+
+void
+remove_unreachable_alias_pairs (void)
+{
+  unsigned i;
+  alias_pair *p;
+
+  if (alias_pairs == NULL)
+    return;
+
+  for (i = 0; VEC_iterate (alias_pair, alias_pairs, i, p); )
+    {
+      if (!DECL_EXTERNAL (p->decl))
+	{
+	  struct cgraph_node *fnode = NULL;
+	  struct varpool_node *vnode = NULL;
+	  fnode = cgraph_node_for_asm (p->target);
+	  vnode = (fnode == NULL) ? varpool_node_for_asm (p->target) : NULL;
+	  if (fnode == NULL && vnode == NULL)
+	    {
+	      VEC_unordered_remove (alias_pair, alias_pairs, i);
+	      continue;
+	    }
+	}
+
+      i++;
+    }
+}
+
+
 /* First pass of completing pending aliases.  Make sure that cgraph knows
    which symbols will be required.  */
 
@@ -5547,6 +5567,11 @@ finish_aliases_1 (void)
 		   p->decl, p->target);
 	}
       else if (DECL_EXTERNAL (target_decl)
+ 	       /* We use local aliases for C++ thunks to force the tailcall
+ 		  to bind locally.  Of course this is a hack - to keep it
+ 		  working do the following (which is not strictly correct).  */
+ 	       && (! TREE_CODE (target_decl) == FUNCTION_DECL
+ 		   || ! TREE_STATIC (target_decl))
 	       && ! lookup_attribute ("weakref", DECL_ATTRIBUTES (p->decl)))
 	error ("%q+D aliased to external symbol %qE",
 	       p->decl, p->target);