loop.c (basic_induction_var): A non-integer variable which is being set by a…

loop.c (basic_induction_var): A non-integer variable which is being set by a paradoxical subreg is probably...

        * loop.c (basic_induction_var): A non-integer variable which is
        being set by a paradoxical subreg is probably not a biv.

From-SVN: r30181

gcc/ChangeLog

+Mon Oct 25 23:54:45 1999  Geoff Keating  <geoffk@cygnus.com>
+
+	* loop.c (basic_induction_var): A non-integer variable which is
+	being set by a paradoxical subreg is probably not a biv.
+
 1999-10-25 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
 
 	* prefix.c (translate_name) Check for empty prefix string.

gcc/loop.c

@@ -6118,6 +6118,8 @@ basic_induction_var (x, mode, dest_reg, p, inc_val, mult_val, location)
 	       || (GET_CODE (SET_DEST (set)) == SUBREG
 		   && (GET_MODE_SIZE (GET_MODE (SET_DEST (set)))
 		       <= UNITS_PER_WORD)
+		   && (GET_MODE_CLASS (GET_MODE (SET_DEST (set)))
+		       == MODE_INT)
 		   && SUBREG_REG (SET_DEST (set)) == x))
 	      && basic_induction_var (SET_SRC (set),
 				      (GET_MODE (SET_SRC (set)) == VOIDmode