/**
* Predefined mode according to tech report 1999-14.
*/
-typedef enum { /* irm is short for `ir mode' */
+typedef enum ir_modecode { /* irm is short for `ir mode' */
irm_BB, /**< basic block */
irm_X, /**< execution */
irm_F, /**< float(32) */
/** These values represent the different mode classes of value representations.
*/
-typedef enum {
+typedef enum ir_mode_sort {
/* Predefined sorts of modes */
irms_auxiliary, /**< Only for Firm use. Not extensible. (irm_T) */
irms_control_flow, /**< Marks all control flow modes. Not extensible. (irm_BB, irm_X) */
Integer computations can be performed. */
irms_float_number, /**< A mode to represent float numbers.
Floating point computations can be performed. */
- irms_reference, /**< A mode to represent entities.
+ irms_reference /**< A mode to represent entities.
Restricted int computations can be performed */
} ir_mode_sort;
/** These values represent the different arithmetic operations possible with a mode.
Further arithmetics can be defined, e.g., for @@@ modes.
*/
-typedef enum {
+typedef enum ir_mode_arithmetic {
irma_uninitialized = 0,
irma_none = 1, /**< For modes for which no representation is specified.
These are modes of sort auxiliary, internal_boolean and character. */
*/
void set_modeP_data(ir_mode *p);
+/*@{*/
/**
Functions to check, whether a ir_modecode is signed, float, int, character,
reference, num, data, datab or dataM.
Vector "int" and "float" are defined by the arithmetic and vector_elem > 1.
*/
-/*@}*/
/* Test for a certain class of modes. */
int mode_is_signed (const ir_mode *mode);
int mode_is_float (const ir_mode *mode);
int mode_is_dataM (const ir_mode *mode);
int mode_is_float_vector (const ir_mode *mode);
int mode_is_int_vector (const ir_mode *mode);
+/*@}*/
-/** Returns true if sm can be converted to lm without loss
- according to firm definition */
+/**
+ * Returns true if sm can be converted to lm without loss
+ * according to firm definition.
+ *
+ * Note that mode_Iu is NOT smaller than mode_Is here.
+ *
+ * @see values_in_mode()
+ */
int smaller_mode(const ir_mode *sm, const ir_mode *lm);
+/**
+ * Returns true if a value of mode sm can be converted into mode lm
+ * and backwards without loss.
+ *
+ * Note that mode_Iu values CAN be converted in mode_Is and back.
+ *
+ * @see smaller_mode()
+ */
+int values_in_mode(const ir_mode *sm, const ir_mode *lm);
+
/**
* Returns a matching unsigned mode for a given integer signed mode.
* Returns NULL if no matching mode exists.
*/
void set_reference_mode_unsigned_eq(ir_mode *ref_mode, ir_mode *int_mode);
+/**
+ * Returns non-zero if the cast from mode src to mode dst is a
+ * reinterpret cast (ie. only the bit pattern is reinterpreted,
+ * no conversion is done)
+ */
+int is_reinterpret_cast(const ir_mode *src, const ir_mode *dst);
+
#endif