+/**
+ * This function is called, whenever a local variable is used before definition
+ *
+ * @param irg the IR graph on which this happens
+ * @param mode the mode of the local var
+ * @param pos position chosen be the frontend for this variable (n_loc)
+ *
+ * @return a firm node of mode @p mode that initializes the var at position pos
+ *
+ * @note
+ * Do not return NULL!
+ * If this function is not set, FIRM will create a const node with tarval BAD.
+ * Use set_irg_loc_description()/get_irg_loc_description() to assign additional
+ * informations to local variables.
+ */
+typedef ir_node *uninitialized_local_variable_func_t(ir_graph *irg, ir_mode *mode, int pos);
+
+/** op_pin_state_pinned states. */
+typedef enum {
+ op_pin_state_floats = 0, /**< Nodes of this opcode can be placed in any basic block. */
+ op_pin_state_pinned = 1, /**< Nodes must remain in this basic block. */
+ op_pin_state_exc_pinned, /**< Node must be remain in this basic block if it can throw an
+ exception, else can float. Used internally. */
+ op_pin_state_mem_pinned /**< Node must be remain in this basic block if it can throw an
+ exception or uses memory, else can float. Used internally. */
+} op_pin_state;
+
+/**
+ * Additional method type properties:
+ * Tell about special properties of a method type. Some
+ * of these may be discovered by analyses.
+ */
+typedef enum {
+ mtp_no_property = 0x00000000, /**< no additional properties, default */
+ mtp_property_const = 0x00000001, /**< This method did not access memory and calculates
+ its return values solely from its parameters.
+ GCC: __attribute__((const)). */
+ mtp_property_pure = 0x00000002, /**< This method did NOT write to memory and calculates
+ its return values solely from its parameters and
+ the memory they points to (or global vars).
+ GCC: __attribute__((pure)). */
+ mtp_property_noreturn = 0x00000004, /**< This method did not return due to an aborting system
+ call.
+ GCC: __attribute__((noreturn)). */
+ mtp_property_nothrow = 0x00000008, /**< This method cannot throw an exception.
+ GCC: __attribute__((nothrow)). */
+ mtp_property_naked = 0x00000010, /**< This method is naked.
+ GCC: __attribute__((naked)). */
+ mtp_property_malloc = 0x00000020, /**< This method returns newly allocate memory.
+ GCC: __attribute__((malloc)). */
+ mtp_property_weak = 0x00000040, /**< This method is weak. It is expected that
+ GCC: __attribute__((weak)). */
+ mtp_property_returns_twice = 0x00000080, /**< This method can return more than one (typically setjmp).
+ GCC: __attribute__((returns_twice)). */
+ mtp_property_intrinsic = 0x00000100, /**< This method is intrinsic. It is expected that
+ a lowering phase will remove all calls to it. */
+ mtp_property_runtime = 0x00000200, /**< This method represents a runtime routine. */
+ mtp_property_private = 0x00000400, /**< All method invocations are known, the backend is free to
+ optimize the call in any possible way. */
+ mtp_property_has_loop = 0x00000800, /**< Set, if this method contains one possible endless loop. */
+ mtp_property_inherited = (1<<31) /**< Internal. Used only in irg's, means property is
+ inherited from type. */
+} mtp_additional_property;
+
+/** This enum names the three different kinds of symbolic Constants
+ represented by SymConst. The content of the attribute type_or_id
+ depends on this tag. Use the proper access routine after testing
+ this flag. */
+typedef enum {
+ symconst_type_tag, /**< The SymConst is a type tag for the given type.
+ symconst_symbol is type *. */
+ symconst_type_size, /**< The SymConst is the size of the given type.
+ symconst_symbol is type *. */
+ symconst_type_align, /**< The SymConst is the alignment of the given type.
+ symconst_symbol is type *. */
+ symconst_addr_name, /**< The SymConst is a symbolic pointer to be filled in
+ by the linker. The pointer is represented by a string.
+ symconst_symbol is ident *. */
+ symconst_addr_ent, /**< The SymConst is a symbolic pointer to be filled in
+ by the linker. The pointer is represented by an entity.
+ symconst_symbol is entity *. */
+ symconst_ofs_ent, /**< The SymConst is the offset of its entity in the entities
+ owner type. */
+ symconst_enum_const, /**< The SymConst is a enumeration constant of an
+ enumeration type. */
+ symconst_label /**< The SymConst is a label address. */
+} symconst_kind;
+
+/** SymConst attribute.
+ *
+ * This union contains the symbolic information represented by the node.
+ */
+typedef union symconst_symbol {
+ ir_type *type_p; /**< The type of a SymConst. */
+ ident *ident_p; /**< The ident of a SymConst. */
+ ir_entity *entity_p; /**< The entity of a SymConst. */
+ ir_enum_const *enum_p; /**< The enumeration constant of a SymConst. */
+ ir_label_t label; /**< The label of a SymConst. */
+} symconst_symbol;