* @brief Data modes of operations.
* @author Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Mathias Heil,
* Michael Beck
- * @version $Id$
* @brief
* This module specifies the modes that type the firm nodes. It defines
* a datasturcture that describes a mode and implements constructors and
#include "firm_types.h"
#include "begin.h"
-/** Helper values for ir_mode_sort. */
-enum ir_mode_sort_helper {
- irmsh_is_num = 0x10, /**< mode represents a number */
- irmsh_is_data = 0x20, /**< mode represents data (can be carried in registers) */
- irmsh_is_datab = 0x40, /**< mode represents data or is internal boolean */
- irmsh_is_dataM = 0x80, /**< mode represents data or is memory */
-};
-
-/**
- * These values represent the different mode classes of value representations.
- * Beware: do not change the order of these values without checking
- * the mode_is
- */
-typedef enum ir_mode_sort {
- irms_auxiliary = 0, /**< Only for Firm use. Not extensible. (irm_T) */
- irms_control_flow = 1, /**< Marks all control flow modes. Not extensible. (irm_BB, irm_X) */
- irms_memory = 2 | irmsh_is_dataM, /**< Marks the memory mode. Not extensible. (irm_M) */
-
- /** Internal boolean representation.
- Storing to memory impossible, convert first. (irm_b) */
- irms_internal_boolean = 3 | irmsh_is_datab,
-
- /** A mode to represent entities.
- Restricted int computations can be performed */
- irms_reference = 4 | irmsh_is_data | irmsh_is_datab | irmsh_is_dataM,
- /** A mode to represent int numbers.
- Integer computations can be performed. */
- irms_int_number = 5 | irmsh_is_data | irmsh_is_datab | irmsh_is_dataM | irmsh_is_num,
- /** A mode to represent float numbers.
- Floating point computations can be performed. */
- irms_float_number = 6 | irmsh_is_data | irmsh_is_datab | irmsh_is_dataM | irmsh_is_num,
-} ir_mode_sort;
-
/**
* These values represent the different arithmetic operations possible with a
* mode.
irma_twos_complement = 2, /**< Values of the mode are represented as two's
complement. Only legal for modes of sort
int_number and reference. */
- irma_ones_complement, /**< Values of the mode are represented as one's
- complement. Only legal for modes of sort
- int_number and reference. */
- irma_int_BCD, /**< Values of the mode are represented as binary
- coded decimals. Only legal for modes of sort
- int_number and reference. */
irma_ieee754 = 256, /**< Values of the mode are represented according
to ieee754 floating point standard. Only
legal for modes of sort float_number. */
- irma_float_BCD, /**< Values of the mode are represented as binary
- coded decimals according to @@@ which
- standards??? Only legal for modes of sort
- float_number. */
- irma_max
+ irma_x86_extended_float, /**< x86 extended floatingpoint values */
+ irma_last = irma_x86_extended_float,
} ir_mode_arithmetic;
-/** Returns the name of the arithmetic type. */
-FIRM_API const char *get_mode_arithmetic_name(ir_mode_arithmetic ari);
-
/**
* Creates a new mode.
*
* 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 chosen.
- * Also, special value tarvals will be calculated such as null,
- * min, max and can be retrieved using the get_mode_* functions
*
* @return
* The new mode or NULL on error.
+ */
+FIRM_API ir_mode *new_int_mode(const char *name,
+ ir_mode_arithmetic arithmetic,
+ unsigned bit_size, int sign,
+ unsigned modulo_shift);
+
+/**
+ * Create a new reference mode.
*
- * @note
- * It is allowed to construct the default modes. So, a call
- * new_ir_mode("Is", irms_int_number, 32, 1, irma_twos_complement, 32) will
- * return mode_Is.
+ * Reference modes are always unsigned.
*/
-FIRM_API ir_mode *new_ir_mode(const char *name, ir_mode_sort sort, int bit_size,
- int sign, ir_mode_arithmetic arithmetic,
- unsigned int modulo_shift);
+FIRM_API ir_mode *new_reference_mode(const char *name,
+ ir_mode_arithmetic arithmetic,
+ unsigned bit_size,
+ unsigned modulo_shift);
/**
- * Creates a new vector mode.
+ * Create a new ieee754 float mode.
*
+ * float-modes are always signed and have no modulo shift.
* @param name the name of the mode to be created
- * @param sort the ir_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 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 chosen.
- * Also, special value tarvals will be calculated such as null,
- * min, max and can be retrieved using the get_mode_* functions
- *
- * @return
- * The new mode or NULL on error.
+ * @param arithmetic arithmetic/representation of the mode
+ * @param exponent_size size of exponent in bits
+ * @param mantissa_size size of mantissa in bits
*/
-FIRM_API ir_mode *new_ir_vector_mode(const char *name, ir_mode_sort sort,
- int bit_size, unsigned num_of_elem,
- int sign, ir_mode_arithmetic arithmetic,
- unsigned int modulo_shift);
+FIRM_API ir_mode *new_float_mode(const char *name,
+ ir_mode_arithmetic arithmetic,
+ unsigned exponent_size,
+ unsigned mantissa_size);
/**
* Checks whether a pointer points to a mode.
/** Returns the null-terminated name of this mode. */
FIRM_API const char *get_mode_name(const ir_mode *mode);
-/** Returns a coarse classification of the mode. */
-FIRM_API ir_mode_sort get_mode_sort(const ir_mode *mode);
-
/** Returns the size of values of the mode in bits. */
FIRM_API unsigned get_mode_size_bits(const ir_mode *mode);
*/
FIRM_API unsigned int get_mode_modulo_shift(const ir_mode *mode);
-/** 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
- */
-FIRM_API unsigned int get_mode_n_vector_elems(const ir_mode *mode);
-
/** Returns the stored intermediate information. */
FIRM_API void *get_mode_link(const ir_mode *mode);
FIRM_API ir_mode *mode_M; /**< memory */
-FIRM_API ir_mode *mode_F; /**< float (32) */
-FIRM_API ir_mode *mode_D; /**< double (64) */
-FIRM_API ir_mode *mode_E; /**< long double (80/128/...) */
+FIRM_API ir_mode *mode_F; /**< ieee754 binary32 float (single precision) */
+FIRM_API ir_mode *mode_D; /**< ieee754 binary64 float (double precision) */
+FIRM_API ir_mode *mode_Q; /**< ieee754 binary128 float (quadruple precision)*/
FIRM_API ir_mode *mode_Bs; /**< int8 */
FIRM_API ir_mode *mode_Bu; /**< uint8 */
FIRM_API ir_mode *mode_Hs; /**< int16 */
FIRM_API ir_mode *get_modeF(void);
FIRM_API ir_mode *get_modeD(void);
-FIRM_API ir_mode *get_modeE(void);
+FIRM_API ir_mode *get_modeQ(void);
FIRM_API ir_mode *get_modeBs(void);
FIRM_API ir_mode *get_modeBu(void);
FIRM_API ir_mode *get_modeHs(void);
The set of "dataM" is defined as:
dataM = {data || irm_M}
-
- Vector "int" and "float" are defined by the arithmetic and vector_elem > 1.
*/
FIRM_API int mode_is_signed (const ir_mode *mode);
FIRM_API int mode_is_data (const ir_mode *mode);
FIRM_API int mode_is_datab (const ir_mode *mode);
FIRM_API int mode_is_dataM (const ir_mode *mode);
-FIRM_API int mode_is_float_vector (const ir_mode *mode);
-FIRM_API int mode_is_int_vector (const ir_mode *mode);
/*@}*/
/**
*/
FIRM_API void set_reference_mode_unsigned_eq(ir_mode *ref_mode, ir_mode *int_mode);
+/**
+ * Return size of mantissa in bits (for float modes)
+ */
+FIRM_API unsigned get_mode_mantissa_size(const ir_mode *mode);
+
+/**
+ * Return size of exponent in bits (for float modes)
+ */
+FIRM_API unsigned get_mode_exponent_size(const ir_mode *mode);
+
/**
* Returns non-zero if the cast from mode src to mode dst is a
* reinterpret cast (ie. only the bit pattern is reinterpreted,
projects / libfirm / blobdiff