*
* Declarations for Target Values.
*/
-
#ifndef _TV_H_
#define _TV_H_
-# include "irmode.h"
- //# include "entity.h"
-# include "irnode.h" /* for pnc_number enum */
-
+#include "irmode.h"
+#include "irnode.h"
/****h* libfirm/tv
*
* SEE ALSO
* Techreport 1999-14
* irmode.h for the modes definitions
- * irnode.h for the pnc_numbers table
+ * irnode.h for the pn_Cmp table
*
* tarval_init1 and tarval_init2 for initialization of the
* module
long get_tarval_long(tarval *tv);
/**
- * This validates if tarval_to_long() will return a satisfying
+ * This validates if get_tarval_long() will return a satisfying
* result. I.e. if tv is an int_number and between min, max
* of long int (signed!)
*/
*/
int tarval_is_double(tarval *tv);
-/**
- * Construct a tarval that represents the address of the entity.
- *
- * The address must be constant, the entity must have as owner the global type.
- * We no more support this function: Use the new SymConst instead.
-tarval *new_tarval_from_entity (entity *ent, ir_mode *mode);
- */
-
-/**
- * Returns the associated entity of a tarval. Asserts if tarval does not
- * contain an entity.
-entity *get_tarval_entity(tarval *tv);
- */
-
-/**
- * Returns non-zero if a the given tarval represents an entity.
-int tarval_is_entity(tarval *tv);
- */
/** ********** Access routines for tarval fields ********** **/
*/
/** Returns the mode of the tarval. */
-ir_mode *get_tarval_mode (tarval *tv);
+ir_mode *get_tarval_mode (const tarval *tv);
+
+/** Returns the contents of the 'link' field of the tarval */
+/* void *get_tarval_link (tarval*); */
/* Testing properties of the represented values */
/**
* Returns 1 if tv is negative
*
- * @param a the tarval
+ * @param a the tarval
*/
int tarval_is_negative(tarval *a);
/**
* Returns 1 if tv is null
*
- * @param a the tarval
+ * @param a the tarval
*/
int tarval_is_null(tarval *a);
/**
* Returns 1 if tv is the "one"
*
- * @param a the tarval
+ * @param a the tarval
*/
int tarval_is_one(tarval *a);
/** The mode_b tarval 'false'. */
extern tarval *tarval_b_false;
+
/** Returns the mode_b tarval 'false'. */
tarval *get_tarval_b_false(void);
/** Returns the 1 value (multiplicative neutral) of a given mode. */
tarval *get_tarval_one(ir_mode *mode);
+/** Returns the -1 value (multiplicative neutral) of a given mode.
+ * Returns tarval bad for unsigned modes */
+tarval *get_tarval_minus_one(ir_mode *mode);
+
/** Return quite nan for float_number modes. */
tarval *get_tarval_nan(ir_mode *mode);
/** Return +inf for float_number modes. */
-tarval *get_tarval_inf(ir_mode *mode);
+tarval *get_tarval_plus_inf(ir_mode *mode);
+
+/** Return -inf for float_number modes. */
+tarval *get_tarval_minus_inf(ir_mode *mode);
+
+/* ******************** Arithmetic operations on tarvals ******************** */
+
+typedef enum _tarval_int_overflow_mode_t {
+ TV_OVERFLOW_BAD, /**< tarval module will return tarval_bad if a overflow occurs */
+ TV_OVERFLOW_WRAP, /**< tarval module will overflow will be ignored, wrap around occurs */
+ TV_OVERFLOW_SATURATE /**< tarval module will saturate the overflow */
+} tarval_int_overflow_mode_t;
+
+/**
+ * Sets the overflow mode for integer operations.
+ */
+void tarval_set_integer_overflow_mode(tarval_int_overflow_mode_t ov_mode);
-/* ******************** Arithmethic operations on tarvals ******************** */
+/**
+ * Get the overflow mode for integer operations.
+ */
+tarval_int_overflow_mode_t tarval_get_integer_overflow_mode(void);
/**
* Compares two tarvals
*
- * Compare a with b and return a pnc_number describing the relation
- * between a and b. This is either Uo, Lt, Eq, Gt, or False if a or b
- * are symbolic pointers which can not be compared at all.
+ * Compare a with b and return a pn_Cmp describing the relation
+ * between a and b. This is either pn_Cmp_Uo, pn_Cmp_Lt, pn_Cmp_Eq, pn_Cmp_Gt,
+ * or pn_Cmp_False if a or b are symbolic pointers which can not be compared at all.
*
* @param a A tarval to be compared
* @param b A tarval to be compared
*
* @return
- * The pnc_number best describing the relation between a and b is returned.
+ * The pn_Cmp best describing the relation between a and b is returned.
* This means the mode with the least bits set is returned, e.g. if the
- * tarvals are equal the pnc_number 'Eq' is returned, not 'Ge' which
+ * tarvals are equal the pn_Cmp 'pn_Cmp_Eq' is returned, not 'pn_Cmp_Ge' which
* indicates 'greater or equal'
*
* @sa
- * irnode.h for the definition of pnc_numbers
+ * irnode.h for the definition of pn_Cmp
*/
-pnc_number tarval_cmp(tarval *a, tarval *b);
+pn_Cmp tarval_cmp(tarval *a, tarval *b);
/**
* Converts a tarval to another mode.
*
- * Convert tarval 'src' to mode 'mode', this will suceed if and only if mode
+ * Convert tarval 'src' to mode 'mode', this will succeed if and only if mode
* 'mode' is wider than the mode of src, as defined in the firm documentation
* and as returned by the function mode_is_smaller defined in irmode.h.
*
* FIRM documentation for conversion rules
* mode_is_smaller defined in irmode.h
*/
-tarval *tarval_convert_to(tarval *src, ir_mode *m);
+tarval *tarval_convert_to(tarval *src, ir_mode *mode);
/*
* These function implement basic computations representable as opcodes
* traval_abs:
* a - the tarval to operate on
*
- * all oters:
+ * all others:
* a - the first operand tarval
* b - the second operand tarval
*
* RESULT
- * If neccessary a new tarval is constructed for the resulting value,
+ * If necessary a new tarval is constructed for the resulting value,
* or the one already carrying the computation result is retrieved and
* returned as result.
*
/** Rotation. */
tarval *tarval_rot(tarval *a, tarval *b);
+/** Carry flag of the last operation */
+int tarval_carry(void);
+
/* *********** Output of tarvals *********** */
/**
* Some modes allow more that one representation, for instance integers
* can be represented hex or decimal. Of course it would be enough to have
* one and let every backend convert it into the 'right' one.
- * However, we can do this in the tarval much simplier...
+ * However, we can do this in the tarval much simpler...
*/
typedef enum {
- TVO_NATIVE, /**< the default output mode, depends on the mode */
- TVO_HEX, /**< use hex representation, always possible */
- TVO_DECIMAL, /**< use decimal representation */
- TVO_OCTAL, /**< use octal representation */
- TVO_BINARY, /**< use binary representation */
- TVO_FLOAT, /**< use floating point representation (i.e 1.342e-2)*/
- TVO_HEXFLOAT /**< use hexadecimal floating point representation (i.e 0x1.ea32p-12)*/
+ TVO_NATIVE, /**< the default output mode, depends on the mode */
+ TVO_HEX, /**< use hex representation, always possible */
+ TVO_DECIMAL, /**< use decimal representation */
+ TVO_OCTAL, /**< use octal representation */
+ TVO_BINARY, /**< use binary representation */
+ TVO_FLOAT, /**< use floating point representation (i.e 1.342e-2)*/
+ TVO_HEXFLOAT /**< use hexadecimal floating point representation (i.e 0x1.ea32p-12)*/
} tv_output_mode;
/**
* of a tarval of a mode.
*/
typedef struct tarval_mode_info {
- tv_output_mode mode_output; /**< if != TVO_NATIVE select a special mode */
- const char *mode_prefix; /**< if set, this prefix will be printed
- before a value of this mode */
- const char *mode_suffix; /**< if set, this suffix will be printed
- after a value of this mode */
+ tv_output_mode mode_output; /**< if != TVO_NATIVE select a special mode */
+ const char *mode_prefix; /**< if set, this prefix will be printed
+ before a value of this mode */
+ const char *mode_suffix; /**< if set, this suffix will be printed
+ after a value of this mode */
} tarval_mode_info;
/**
* Specify the output options of one mode.
*
- * This functions stores the modinfo, so DO NOT DESTROY it.
+ * This functions stores the mode info, so DO NOT DESTROY it.
*
- * @param mode a ir_mode that should be associated
- * @param modeinfo the output format info
+ * @param mode a ir_mode that should be associated
+ * @param modeinfo the output format info
*
* @return zero on success.
*/
/**
* Returns the output options of one mode.
*
- * This functions returns the modinfo of a given mode.
+ * This functions returns the mode info of a given mode.
*
- * @param mode a ir_mode that should be associated
+ * @param mode a ir_mode that should be associated
*
* @return the output option
*/
* @note
* The string is allocated using malloc() and is free()ed on the next call
* of this function.
- * The string consists of the ascii characters '0' and '1' and is
+ * The string consists of the ASCII characters '0' and '1' and is
* null terminated
*
* @sa
* Because this is the bit representation of the target machine, only the following
* operations are legal on the result:
*
- * - concatenation (endian dependance MUST be handled by the CALLER)
+ * - concatenation (endian dependence MUST be handled by the CALLER)
* - bitwise logical operations to select/mask bits
*
- * @param tv the tarval
- * @param byte_ofs the byte offset
+ * @param tv the tarval
+ * @param byte_ofs the byte offset
*
* @note
- * The result of this funcion is undefined if the mode is neither integer nor float.
+ * The result of this function is undefined if the mode is neither integer nor float.
*/
unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs);
* Return values of tarval classify
*/
typedef enum _tarval_classification_t {
- TV_CLASSIFY_NULL = 0, /**< the tarval represents the additive neutral element */
- TV_CLASSIFY_ONE = +1, /**< the tarval represents the multiplicative neutral element */
- TV_CLASSIFY_ALL_ONE = -1, /**< the tarval represents the bitwise-and neutral element */
- TV_CLASSIFY_OTHER = 2 /**< all other tarvals */
+ TV_CLASSIFY_NULL = 0, /**< the tarval represents the additive neutral element */
+ TV_CLASSIFY_ONE = +1, /**< the tarval represents the multiplicative neutral element */
+ TV_CLASSIFY_ALL_ONE = -1, /**< the tarval represents the bitwise-and neutral element */
+ TV_CLASSIFY_OTHER = 2 /**< all other tarvals */
} tarval_classification_t;
/**
*/
tarval_classification_t classify_tarval(tarval *tv);
-
-
/**
* Output of tarvals to a buffer.
*/
projects / libfirm / blobdiff