Don't let regrename clobber the link register.

	* config/v850/v850.h (EPILOGUE_USES): Define.

From-SVN: r57689

gcc/ChangeLog

+2002-10-01  Jim Wilson  <wilson@redhat.com>
+
+	* config/v850/v850.h (EPILOGUE_USES): Define.
+
 2002-09-30  Andrew Haley  <aph@redhat.com>
 
 	* flow.c (insn_dead_p): When using non-call-exceptions, don't 

gcc/config/v850/v850.h

@@ -812,6 +812,12 @@ struct cum_arg { int nbytes; int anonymous_args; };
 
 #define EXIT_IGNORE_STACK 1
 
+/* Define this macro as a C expression that is nonzero for registers
+   used by the epilogue or the `return' pattern.  */
+
+#define EPILOGUE_USES(REGNO) \
+  (reload_completed && (REGNO) == LINK_POINTER_REGNUM)
+
 /* Output assembler code to FILE to increment profiler label # LABELNO
    for profiling a function entry.  */