s390.c (s390_emit_epilogue): Always restore registers needed by the compiler...

* config/s390/s390.c (s390_emit_epilogue): Always restore registers
needed by the compiler, even if they are used as global regs.

From-SVN: r52768

gcc/ChangeLog

+2002-04-25  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* config/s390/s390.c (s390_emit_epilogue): Always restore registers
+	needed by the compiler, even if they are used as global regs.
+
 2002-04-25  Matt Hiller  <hiller@redhat.com>
 
 	* mips.c (mips_class_max_nregs, mips_register_move_cost): New

gcc/config/s390/s390.c

@@ -3255,6 +3255,14 @@ s390_emit_epilogue ()
 	   i <= frame.last_save_gpr;
 	   i++)
 	{
+	  /* These registers are special and need to be 
+	     restored in any case.  */
+	  if (i == STACK_POINTER_REGNUM 
+              || i == RETURN_REGNUM
+              || i == BASE_REGISTER 
+              || (flag_pic && i == PIC_OFFSET_TABLE_REGNUM))
+	    continue;
+
 	  if (global_regs[i])
 	    {
 	      addr = plus_constant (frame_pointer,