Revert:

        2013-08-20  Alexey Makhalov  <makhaloff@gmail.com>

        * dce.c (fini_dce): Call df_analyze again just in case
        delete_unmarked_insns removed anything.

From-SVN: r201905

gcc/ChangeLog

+2013-08-21  Jeff Law  <law@redhat.com>
+
+	Revert:
+	2013-08-20  Alexey Makhalov  <makhaloff@gmail.com>
+
+        * dce.c (fini_dce): Call df_analyze again just in case
+	delete_unmarked_insns removed anything.
+
 2013-08-21  Joern Rennecke  <joern.rennecke@embecosm.com>
 
 	* reload.h (struct reg_equivs): Rename to ..

gcc/dce.c

@@ -745,17 +745,6 @@ fini_dce (bool fast)
       bitmap_obstack_release (&dce_blocks_bitmap_obstack);
       bitmap_obstack_release (&dce_tmp_bitmap_obstack);
     }
-
-  /* If DCE removes the last reference to a hard register, we want
-     to recompute REGS_EVER_LIVE and the global life information.
-
-     Ideally we'd look at REGS_EVER_LIVE before and after and only
-     rerun DF analysis if something changed.  */
-  if (!df_in_progress)
-    {
-      df_compute_regs_ever_live (true);
-      df_analyze ();
-    }
 }