expr.c (expand_increment): When enqueing a postincrement for a MEM...

	* expr.c (expand_increment): When enqueing a postincrement for a MEM,
	use copy_to_reg if address is not a general_operand.

From-SVN: r16247

gcc/ChangeLog

+Fri Oct 31 00:34:55 1996  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* expr.c (expand_increment): When enqueing a postincrement for a MEM,
+	use copy_to_reg if address is not a general_operand.
+
 Fri Oct 31 00:16:55 1997  J"orn Rennecke <amylaar@cygnus.co.uk>
 
 	* profile.c (output_func_start_profiler): Clear flag_inline_functions

gcc/expr.c

@@ -9847,7 +9847,9 @@ expand_increment (exp, post, ignore)
 	}
       if (icode != (int) CODE_FOR_nothing && GET_CODE (op0) == MEM)
 	{
-	  rtx addr = force_reg (Pmode, XEXP (op0, 0));
+	  rtx addr = (general_operand (XEXP (op0, 0), mode)
+		      ? force_reg (Pmode, XEXP (op0, 0))
+		      : copy_to_reg (XEXP (op0, 0)));
 	  rtx temp, result;
 
 	  op0 = change_address (op0, VOIDmode, addr);