[Bug middle-end/55263] [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions

["steven at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|steven at gcc dot gnu.org   |
         AssignedTo|unassigned at gcc dot       |steven at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #2 from Steven Bosscher <steven at gcc dot gnu.org> 2012-11-10 23:59:39 UTC ---
Index: postreload.c
===================================================================
--- postreload.c        (revision 193396)
+++ postreload.c        (working copy)
@@ -2289,8 +2289,9 @@ rest_of_handle_postreload (void)
   reload_cse_regs (get_insns ());
   /* Reload_cse_regs can eliminate potentially-trapping MEMs.
      Remove any EH edges associated with them.  */
-  if (cfun->can_throw_non_call_exceptions)
-    purge_all_dead_edges ();
+  if (cfun->can_throw_non_call_exceptions
+      && purge_all_dead_edges ())
+    cleanup_cfg (0);

   return 0;
 }