cgraph.c (cgraph_mark_address_taken_node): No longer imply needed flag.

	* cgraph.c (cgraph_mark_address_taken_node): No longer imply needed flag.
	* cgraph.h (cgraph_only_called_directly_p,
	cgraph_can_remove_if_no_direct_calls_p): test address_taken flag.
	(cgraph_can_remove_if_no_direct_calls_and_refs_p): New function.
	* cgraphunit.c (cgraph_mark_functions_to_output): Test address_taken.
	(assemble
	* ipa.c (cgraph_remove_unreachable_nodes): Use
	cgraph_can_remove_if_no_direct_calls_and_refs_p; clear address_taken flags.
	* tree-inline.c (copy_bb): Check address_taken flag.
	* tree-profile.c (tree_gen_ic_func_profiler): Check address_taken and
	externally_visible flag.

	* tree-ssa/unreachable.c: New test.

From-SVN: r159354

1 files changed, 11 insertions, 2 deletions

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index dbfc89f8f1d..1ccae09aa06 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -856,19 +856,28 @@ varpool_node_set_nonempty_p (varpool_node_set set)
 static inline bool
 cgraph_only_called_directly_p (struct cgraph_node *node)
 {
-  return !node->needed && !node->local.externally_visible;
+  return !node->needed && !node->address_taken && !node->local.externally_visible;
 }
 
 /* Return true when function NODE can be removed from callgraph
    if all direct calls are eliminated.  */
 
 static inline bool
-cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node)
+cgraph_can_remove_if_no_direct_calls_and_refs_p (struct cgraph_node *node)
 {
   return (!node->needed && !node->reachable_from_other_partition
   	  && (DECL_COMDAT (node->decl) || !node->local.externally_visible));
 }
 
+/* Return true when function NODE can be removed from callgraph
+   if all direct calls are eliminated.  */
+
+static inline bool
+cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node)
+{
+  return !node->address_taken && cgraph_can_remove_if_no_direct_calls_and_refs_p (node);
+}
+
 /* Constant pool accessor function.  */
 htab_t constant_pool_htab (void);