* cgraph.c (cgraph_clone_node): Add redirect_callers parameter.

[pf3gnuchains/gcc-fork.git] / gcc / ipa-pure-const.c

diff --git a/gcc/ipa-pure-const.c b/gcc/ipa-pure-const.c
index e5ff3a7..04d4e11 100644 (file)
--- a/gcc/ipa-pure-const.c
+++ b/gcc/ipa-pure-const.c
@@ -688,6 +688,18 @@ ignore_edge (struct cgraph_edge *e)
   return (!e->can_throw_external);
 }
 
+/* Return true if NODE is self recursive function.  */
+
+static bool
+self_recursive_p (struct cgraph_node *node)
+{
+  struct cgraph_edge *e;
+  for (e = node->callees; e; e = e->next_callee)
+    if (e->callee == node)
+      return true;
+  return false;
+}
+
 /* Produce the global information by preforming a transitive closure
    on the local information that was produced by generate_summary.
    Note that there is no function_transform pass since this only
@@ -776,6 +788,8 @@ propagate (void)
          if (w_l->state_previously_known != IPA_NEITHER
              && this_state > w_l->state_previously_known)
             this_state = w_l->state_previously_known;
+         if (!this_looping && self_recursive_p (w))
+           this_looping = true;
          if (!w_l->looping_previously_known)
            this_looping = false;