+/** additional graph flags:
+ * Tell about special properties of a graph. Some
+ * of these may be discovered by analyses.
+ */
+typedef enum {
+ irg_const_function = 0x00000001, /**< This graph did not access memory and calculates
+ its return values solely from its parameters.
+ GCC: __attribute__((const)). */
+ irg_pure_function = 0x00000002, /**< This graph did NOT write to memory and calculates
+ its return values solely form its parameters and
+ the memory they points to (or global vars).
+ GCC: __attribute__((pure)). */
+ irg_noreturn_function = 0x00000004, /**< This graph did not return due to an aborting system
+ call.
+ GCC: __attribute__((noreturn)). */
+ irg_nothrow_function = 0x00000008, /**< This graph cannot throw an exception.
+ GCC: __attribute__((nothrow)). */
+ irg_naked_function = 0x00000010, /**< This graph is naked.
+ GCC: __attribute__((naked)). */
+ irg_malloc_function = 0x00000020 /**< This graph returns newly allocate memory.
+ GCC: __attribute__((malloc)). */
+} irg_additional_property;
+
+/** Returns the mask of the additional graph properties. */
+unsigned get_irg_additional_properties(const ir_graph *irg);
+
+/** Sets the mask of the additional graph properties. */
+void set_irg_additional_properties(ir_graph *irg, unsigned property_mask);
+
+/** Sets one additional graph property. */
+void set_irg_additional_property(ir_graph *irg, irg_additional_property flag);
+
+/**
+ * calling conventions
+ */
+typedef enum {
+ irg_cc_reg_param = 0x00000001, /**< Transmit parameters in registers, else the stack is used.
+ This flag may be set as default on some architectures. */
+ irg_cc_last_on_top = 0x00000002, /**< The last non-register parameter is transmitted on top of
+ the stack. This is equivalent to the stddecl or pascal
+ calling convention. If this flag is not set, the first
+ non-register parameter is used (cdecl calling convention) */
+ irg_cc_this_call = 0x00000004 /**< The first parameter is a this pointer and is transmitted
+ in a special way. */
+} irg_calling_convention;
+
+/** Returns the calling convention of a graph. */
+unsigned get_irg_calling_convention(const ir_graph *irg);
+
+/** Sets the calling convention of a graph. */
+void set_irg_calling_convention(ir_graph *irg, unsigned cc_mask);
+
+/** Gets the default calling convention for new constructed graphs. */
+unsigned get_firm_default_calling_convention(void);
+
+/** Sets the default calling convention for new constructed graphs. */
+void set_firm_default_calling_convention(unsigned cc_mask);
+
+/** A void * field to link arbitrary information to the node. */