ifcvt.c (noce_get_condition): Check condition variable is not…

ifcvt.c (noce_get_condition): Check condition variable is not small_register_classes_for_mode_p before accepting.

2012-02-27  Stuart Henderson  <shenders@gcc.gnu.org>

    * ifcvt.c (noce_get_condition): Check condition variable is not
    small_register_classes_for_mode_p before accepting.

From-SVN: r184599

gcc/ChangeLog

+2012-02-27  Stuart Henderson  <shenders@gcc.gnu.org>
+
+	* ifcvt.c (noce_get_condition): Check condition variable is not
+	small_register_classes_for_mode_p before accepting.
+
 2012-02-27  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (*movabs<mode>_1): Fix operand 1 constraints.

gcc/ifcvt.c

@@ -2295,7 +2295,9 @@ noce_get_condition (rtx jump, rtx *earliest, bool then_else_reversed)
 
   cond = XEXP (SET_SRC (set), 0);
   tmp = XEXP (cond, 0);
-  if (REG_P (tmp) && GET_MODE_CLASS (GET_MODE (tmp)) == MODE_INT)
+  if (REG_P (tmp) && GET_MODE_CLASS (GET_MODE (tmp)) == MODE_INT
+      && (GET_MODE (tmp) != BImode
+          || !targetm.small_register_classes_for_mode_p (BImode)))
     {
       *earliest = jump;