* ATTRIBUTES:
* - modecode code: An unambigous int (enum) for the mode
* - ident *name: Name of this mode. Two modes are different if the name is different.
- * - mode_sort sort: sort of mode specifying possible usage kategories
+ * - mode_sort sort: sort of mode specifying possible usage categories
* - int size: size of the mode in Bits.
- * - int align: byte alignment
* - unsigned sign:1: signedness of this mode
* - ... more to come
* - modulo_shift specifies for modes of kind irms_int_number
* @param name the name of the mode to be created
* @param sort the mode_sort of the mode to be created
* @param bit_size number of bits this mode allocate
- * @param bit_align the alignment for an entity of this mode in bits
* @param sign non-zero if this is a signed mode
* @param arithmetic arithmetic operations possible with a mode
* @param modulo_shift Is ignored for modes other than integer.
* This function constructs a new mode given by the parameters.
* If the parameters match an already defined mode, this mode is returned
* (including the default modes).
- * If the mode is newly allocated, a new unique mode_code is choosen.
+ * If the mode is newly allocated, a new unique mode_code is chosen.
* Also, special value tarvals will be calculated such as null,
- * min, max and can be retrieved using the get_mode_* fuctions
+ * min, max and can be retrieved using the get_mode_* functions
*
* @return
* The new mode or NULL on error.
*
* @note
* It is allowed to construct the default modes. So, a call
- * new_ir_mode("Is", irms_int_number, 32, 4, 1, irma_twos_complement, 32) will return mode_Is.
+ * new_ir_mode("Is", irms_int_number, 32, 1, irma_twos_complement, 32) will return mode_Is.
*/
-ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int bit_align, int sign, mode_arithmetic arithmetic, unsigned int modulo_shift);
+ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign, mode_arithmetic arithmetic, unsigned int modulo_shift);
/**
* Creates a new vector mode.
*
- * @param name the name of the mode to be created
- * @param sort the mode_sort of the mode to be created
- * @param bit_size number of bits for one element of this mode
+ * @param name the name of the mode to be created
+ * @param sort the mode_sort of the mode to be created
+ * @param bit_size number of bits for one element of this mode
* @param num_of_elem number of elements in this vector mode
- * @param bit_align the alignment for an entity of this mode in bits
- * @param sign non-zero if this is a signed mode
+ * @param sign non-zero if this is a signed mode
* @param arithmetic arithmetic operations possible with a mode
* @param modulo_shift Is ignored for modes other than integer.
*
* This function constructs a new vector mode given by the parameters.
* If the parameters match an already defined mode, this mode is returned.
- * If the mode is newly allocated, a new unique mode_code is choosen.
+ * If the mode is newly allocated, a new unique mode_code is chosen.
* Also, special value tarvals will be calculated such as null,
- * min, max and can be retrieved using the get_mode_* fuctions
+ * min, max and can be retrieved using the get_mode_* functions
*
* @return
* The new mode or NULL on error.
*/
-ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int bit_align, int sign,
+ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
mode_arithmetic arithmetic, unsigned int modulo_shift );
/**
/* ********** Access methods to read mode information *********** */
/** Returns the classification of the mode */
-modecode get_mode_modecode(const ir_mode *mode);
+modecode get_mode_modecode(const ir_mode *mode);
/** Returns the ident* of the mode */
-ident *get_mode_ident(const ir_mode *mode);
+ident *get_mode_ident(const ir_mode *mode);
/** Returns the null-terminated name of this mode. */
const char *get_mode_name(const ir_mode *mode);
/** Returns a coarse classification of the mode. */
-mode_sort get_mode_sort(const ir_mode *mode);
+mode_sort get_mode_sort(const ir_mode *mode);
/** Returns the size of values of the mode in bits. */
int get_mode_size_bits(const ir_mode *mode);
* If the size is not dividable by 8 returns -1. */
int get_mode_size_bytes(const ir_mode *mode);
-/** Returns the alignment of values of the mode in bits. */
-int get_mode_align_bits(const ir_mode *mode);
-
-/** Returns the alignment of values of the mode in bytes.
- * If the alignment is not dividable by 8 returns -1. */
-int get_mode_align_bytes(const ir_mode *mode);
-
/** Returns the signess of a mode.
*
* Returns the signess of a mode: 1 if mode is signed. */
/** Returns the arithmetic of a mode */
int get_mode_arithmetic(const ir_mode *mode);
-/** Attribute modulo shift specifies for modes of kind irms_int_number
+/** Get the modulo shift attribute.
+ *
+ * Attribute modulo shift specifies for modes of kind irms_int_number
* whether shift applies modulo to value of bits to shift. Zero for
* modes that are not integer.
*/
unsigned int get_mode_modulo_shift(const ir_mode *mode);
-/** Attribute vector_elem specifies the number of vector elements of
+/** Return the number of vector elements.
+ *
+ * Attribute vector_elem specifies the number of vector elements of
* a vector mode. For non-vector modes it returns 1 for data and 0
* for all other modes
*/
-unsigned int get_mode_vector_elems(const ir_mode *mode);
+unsigned int get_mode_n_vector_elems(const ir_mode *mode);
/** Returns the stored intermediate information. */
-void* get_mode_link(const ir_mode *mode);
+void *get_mode_link(const ir_mode *mode);
/** Stores new intermediate information. */
-void set_mode_link(ir_mode *mode, void *l);
+void set_mode_link(ir_mode *mode, void *l);
/**
* Returns the smallest representable value of a given mode.
*
* For modes of the sort float_number this is the most negative value
- * bigger than -infinit.
+ * bigger than -infinite.
*/
tarval *get_mode_min(ir_mode *mode);
* Returns the biggest representable value o f a given mode.
*
* For modes of the sort float_number this is the largest value lower
- * than infinit.
+ * than infinite.
*/
tarval *get_mode_max(ir_mode *mode);
*
* Zero is the additive neutral element and as such
* is defined only for modes allowing addition, i.e.
- * floats and ints, and references (NULL-Pointer)
+ * op_pin_state_floats and ints, and references (NULL-Pointer)
* else returns tarval_bad.
*/
tarval *get_mode_null(ir_mode *mode);
*
* One, being the multiplicative neutral element,
* is defined only for modes allowing multiplication,
- * i.e. ints and floats.
+ * i.e. ints and op_pin_state_floats.
*/
tarval *get_mode_one(ir_mode *mode);
extern ir_mode *mode_M; /**< memory */
-/* -- A set of predifined, numerical modes according to Techreport 1999-44 -- */
+/* -- A set of predefined, numerical modes according to Techreport 1999-44 -- */
extern ir_mode *mode_F; /**< signed float(32) */
extern ir_mode *mode_D; /**< signed double(64) */
extern ir_mode *mode_E; /**< signed extended(80) */
extern ir_mode *mode_Bs; /**< signed byte (former char) */
extern ir_mode *mode_Bu; /**< unsigned byte (former char) */
extern ir_mode *mode_Hs; /**< signed short integer */
-extern ir_mode *mode_Hu; /**< unsigened short integer */
+extern ir_mode *mode_Hu; /**< unsigned short integer */
extern ir_mode *mode_Is; /**< signed integer */
extern ir_mode *mode_Iu; /**< unsigned integer */
extern ir_mode *mode_Ls; /**< signed long integer */
according to firm definiton */
int smaller_mode(const ir_mode *sm, const ir_mode *lm);
-/** mode module initialization, call once before use of any other function **/
-void init_mode(void);
+/**
+ * Returns a matching unsigned mode for a given integer signed mode.
+ * Returns NULL if no matching mode exists.
+ */
+ir_mode *find_unsigned_mode(const ir_mode *mode);
+
+/**
+ * Returns a matching signed mode for a given integer unsigned mode.
+ * Returns NULL if no matching mode exists.
+ */
+ir_mode *find_signed_mode(const ir_mode *mode);
+
+/**
+ * Returns an integer mode with 2*n bits for a given integer mode with n bits.
+ * Returns NULL if no matching mode exists.
+ */
+ir_mode *find_double_bits_int_mode(const ir_mode *mode);
-/** mode module finalization. frees all memory. */
-void finish_mode(void);
+/**
+ * Returns non-zero if the given mode honors signed zero's, i.e.,
+ * a +0 and a -0 exists and handled differently.
+ */
+int mode_honor_signed_zeros(const ir_mode *mode);
+
+/**
+ * Returns non-zero if the given mode might overflow on unary Minus.
+ */
+int mode_overflow_on_unary_Minus(const ir_mode *mode);
#endif /* _IRMODE_H_ */
projects / libfirm / blobdiff