DECL codes in trees. */
DEF_RTL_EXPR(VALUE, "value", "0", RTX_OBJ)
+/* The RTL generated for a DEBUG_EXPR_DECL. It links back to the
+ DEBUG_EXPR_DECL in the first operand. */
+DEF_RTL_EXPR(DEBUG_EXPR, "debug_expr", "0", RTX_OBJ)
+
/* ---------------------------------------------------------------------
Expressions used in constructing lists.
--------------------------------------------------------------------- */