dse.c (find_shift_sequence): Temporarily revert to forbidding word shifts.

gcc/
	* dse.c (find_shift_sequence): Temporarily revert to forbidding
	word shifts.

From-SVN: r128586

gcc/ChangeLog

+2007-09-18  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	* dse.c (find_shift_sequence): Temporarily revert to forbidding
+	word shifts.
+
 2007-09-18  Rask Ingemann Lambertsen  <rask@sygehus.dk>
 
 	PR target/33388

gcc/dse.c

@@ -1407,7 +1407,7 @@ find_shift_sequence (rtx read_reg,
      justify the value we want to read but is available in one insn on
      the machine.  */
 
-  for (; access_size <= UNITS_PER_WORD; access_size *= 2)
+  for (; access_size < UNITS_PER_WORD; access_size *= 2)
     {
       rtx target, new_reg;
       enum machine_mode new_mode;