arc.md (casesi_load): Mark as varying.

        * config/arc/arc.md (casesi_load) <length attribute alternative 0>:
        Mark as varying.

From-SVN: r208294

gcc/ChangeLog

 2014-03-03  Joern Rennecke  <joern.rennecke@embecosm.com>
 
+	* config/arc/arc.md (casesi_load) <length attribute alternative 0>:
+	Mark as varying.
+
+2014-03-03  Joern Rennecke  <joern.rennecke@embecosm.com>
+
 	* opts.h (CL_PCH_IGNORE): Define.
 	* targhooks.c (option_affects_pch_p):
 	Return false for options that have CL_PCH_IGNORE set.

gcc/config/arc/arc.md

@@ -3611,7 +3611,11 @@
       (const_string "false")])
    (set_attr_alternative "length"
      [(cond
-	[(eq_attr "iscompact" "false") (const_int 4)]
+	[(eq_attr "iscompact" "false") (const_int 4)
+	; We have to mention (match_dup 3) to convince genattrtab.c that this
+	; is a varying length insn.
+	 (eq (symbol_ref "1+1") (const_int 2)) (const_int 2)
+	 (gt (minus (match_dup 3) (pc)) (const_int 42)) (const_int 4)]
 	(const_int 2))
       (const_int 4)
       (const_int 8)])])