microblaze.c: fix warnings

gcc/ChangeLog:
	* config/microblaze/microblaze.c (get_branch_target): Add return
	NULL_RTX for the non-CALL_P case.
	(insert_wic_for_ilb_runout): Remove unused local "wic_addr1".
	(insert_wic): Remove unused local "j".

From-SVN: r237044

gcc/ChangeLog

+2016-06-02  David Malcolm  <dmalcolm@redhat.com>
+
+	* config/microblaze/microblaze.c (get_branch_target): Add return
+	NULL_RTX for the non-CALL_P case.
+	(insert_wic_for_ilb_runout): Remove unused local "wic_addr1".
+	(insert_wic): Remove unused local "j".
+
 2016-06-02  Martin Liska  <mliska@suse.cz>
 
 	* predict.def: Fix typo in PRED_FORTRAN_FAIL_IO display name.

gcc/config/microblaze/microblaze.c

@@ -3624,6 +3624,8 @@ get_branch_target (rtx branch)
         abort ();
       return XEXP (XEXP (call, 0), 0);
     }
+
+  return NULL_RTX;
 }
 
 /* Heuristics to identify where to insert at the
@@ -3650,7 +3652,6 @@ insert_wic_for_ilb_runout (rtx_insn *first)
   int addr_offset = 0;
   int length;
   int wic_addr0 = 128 * 4;
-  int wic_addr1 = 128 * 4;
 
   int first_addr = INSN_ADDRESSES (INSN_UID (first));
 
@@ -3693,7 +3694,7 @@ static void
 insert_wic (void)
 {
   rtx_insn *insn;
-  int i, j;
+  int i;
   basic_block bb, prev = 0;
   rtx branch_target = 0;