cgraph.c (cgraph_will_be_removed_from_program_if_no_direct_calls): New function.

	* cgraph.c (cgraph_will_be_removed_from_program_if_no_direct_calls):
	New function.
	* cgraph.h (cgraph_will_be_removed_from_program_if_no_direct_calls):
	Declare.
	* ipa-cp.c (ipcp_estimate_growth): Use it.
	* ipa-inline.c (cgraph_estimate_growth, cgraph_decide_inlining):
	Likewise.

From-SVN: r161966

1 files changed, 25 insertions, 0 deletions

diff --git a/gcc/cgraph.c b/gcc/cgraph.c
index 33653df..fff437a 100644
--- a/gcc/cgraph.c
+++ b/gcc/cgraph.c
@@ -2651,4 +2651,29 @@ cgraph_edge_cannot_lead_to_return (struct cgraph_edge *e)
     return cgraph_node_cannot_return (e->callee);
 }
 
+/* Return true when function NODE can be excpected to be removed
+   from program when direct calls in this compilation unit are removed.
+
+   As a special case COMDAT functions are
+   cgraph_can_remove_if_no_direct_calls_p while the are not
+   cgraph_only_called_directly_p (it is possible they are called from other
+   unit)
+
+   This function behaves as cgraph_only_called_directly_p because eliminating
+   all uses of COMDAT function does not make it neccesarily disappear from
+   the program unless we are compiling whole program or we do LTO.  In this
+   case we know we win since dynamic linking will not really discard the
+   linkonce section.  */
+
+bool
+cgraph_will_be_removed_from_program_if_no_direct_calls (struct cgraph_node *node)
+{
+  if (node->local.used_from_object_file)
+    return false;
+  if (!in_lto_p && !flag_whole_program)
+    return cgraph_only_called_directly_p (node);
+  else
+    return cgraph_can_remove_if_no_direct_calls_p (node);
+}
+
 #include "gt-cgraph.h"