bfin.h (PREFERRED_RELOAD_CLASS): Don't reload autoinc addresses into I registers.

	* config/bfin/bfin.h (PREFERRED_RELOAD_CLASS): Don't reload autoinc
	addresses into I registers.

From-SVN: r128212

gcc/ChangeLog

+2007-09-07  Bernd Schmidt  <bernd.schmidt@analog.com>
+
+	* config/bfin/bfin.h (PREFERRED_RELOAD_CLASS): Don't reload autoinc
+	addresses into I registers.
+
 2007-09-06  Jan Hubicka  <jh@suse.cz>
 	    Andreas Tobler  <a.tobler@schweiz.org>
 

gcc/config/bfin/bfin.h

@@ -721,7 +721,10 @@ enum reg_class
    class to use when it is necessary to copy value X into a register
    in class CLASS.  The value is a register class; perhaps CLASS, or
    perhaps another, smaller class.  */
-#define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS)
+#define PREFERRED_RELOAD_CLASS(X, CLASS)		\
+  (GET_CODE (X) == POST_INC				\
+   || GET_CODE (X) == POST_DEC				\
+   || GET_CODE (X) == PRE_DEC ? PREGS : (CLASS))
 
 /* Function Calling Conventions. */