expr.c (expand_builtin): Use copy_to_mode_reg; don't force constants into a register.

        * expr.c (expand_builtin) [BUILT_IN_RETURN_ADDRESS]: Use
        copy_to_mode_reg; don't force constants into a register.

From-SVN: r26231

gcc/ChangeLog

+Wed Apr  7 02:11:55 1999  Richard Henderson  <rth@cygnus.com>
+
+	* expr.c (expand_builtin) [BUILT_IN_RETURN_ADDRESS]: Use
+	copy_to_mode_reg; don't force constants into a register.
+
 Tue Apr  6 22:55:25 1999  Richard Henderson  <rth@cygnus.com>
 
 	* toplev.c (compile_file): Typo flow_dump -> flow2_dump.

gcc/expr.c

@@ -9131,8 +9131,9 @@ expand_builtin (exp, target, subtarget, mode, ignore)
 	  if (DECL_FUNCTION_CODE (fndecl) == BUILT_IN_FRAME_ADDRESS)
 	    return tem;
 
-	  if (GET_CODE (tem) != REG)
-	    tem = copy_to_reg (tem);
+	  if (GET_CODE (tem) != REG
+	      && ! CONSTANT_P (tem))
+	    tem = copy_to_mode_reg (Pmode, tem);
 	  return tem;
 	}