* mn10300.h (PREFERRED_RELOAD_CLASS): Limit memory reloads.

From-SVN: r35550

gcc/ChangeLog

+2000-08-07  Graham Stott  <grahams@cygnus.co.uk>
+
+	* mn10300.h (PREFERRED_RELOAD_CLASS): Limit memory reloads.
+
 2000-08-07  Alexandre Oliva  <aoliva@redhat.com>
 
 	* sh.h (EXTRA_CONSTRAINT_Q): Adjust to GNU Coding Standards.

gcc/config/mn10300/mn10300.h

@@ -379,9 +379,12 @@ enum reg_class {
    In general this is just CLASS; but on some machines
    in some cases it is preferable to use a more restrictive class.  */
 
-#define PREFERRED_RELOAD_CLASS(X,CLASS) \
-  (X == stack_pointer_rtx && CLASS != SP_REGS \
-   ? ADDRESS_OR_EXTENDED_REGS : CLASS)
+#define PREFERRED_RELOAD_CLASS(X,CLASS)			\
+  ((X) == stack_pointer_rtx && (CLASS) != SP_REGS	\
+   ? ADDRESS_OR_EXTENDED_REGS				\
+   : (GET_CODE (X) == MEM				\
+      ? LIMIT_RELOAD_CLASS (GET_MODE (X), CLASS)	\
+      : (CLASS)))
 
 #define PREFERRED_OUTPUT_RELOAD_CLASS(X,CLASS) \
   (X == stack_pointer_rtx && CLASS != SP_REGS \