Data Structures
struct	fixed_value

Macros
#define	FIXED_VALUE_TYPE struct fixed_value
#define	MAX_FCONST0
#define	MAX_FCONST1
#define	FCONST0(mode) fconst0[mode - QQmode]
#define	FCONST1(mode) fconst1[mode - HAmode]
#define	CONST_FIXED_FROM_FIXED_VALUE(r, m) const_fixed_from_fixed_value (r, m)
#define	FIXED_VALUES_IDENTICAL(x, y) fixed_identical (&(x), &(y))
#define	FIXED_VALUE_NEGATIVE(x) fixed_isneg (&(x))

Functions
rtx	const_fixed_from_fixed_value (FIXED_VALUE_TYPE, enum machine_mode)
FIXED_VALUE_TYPE	fixed_from_double_int (double_int, enum machine_mode)
static rtx	const_fixed_from_double_int (double_int payload, enum machine_mode mode)
void	fixed_from_string (FIXED_VALUE_TYPE , const char , enum machine_mode)
tree	build_fixed (tree, FIXED_VALUE_TYPE)
bool	fixed_convert (FIXED_VALUE_TYPE , enum machine_mode, const FIXED_VALUE_TYPE , bool)
bool	fixed_convert_from_int (FIXED_VALUE_TYPE *, enum machine_mode, double_int, bool, bool)
bool	fixed_convert_from_real (FIXED_VALUE_TYPE , enum machine_mode, const REAL_VALUE_TYPE , bool)
void	real_convert_from_fixed (REAL_VALUE_TYPE , enum machine_mode, const FIXED_VALUE_TYPE )
bool	fixed_identical (const FIXED_VALUE_TYPE , const FIXED_VALUE_TYPE )
unsigned int	fixed_hash (const FIXED_VALUE_TYPE *)
void	fixed_to_decimal (char str, const FIXED_VALUE_TYPE , size_t)
bool	fixed_arithmetic (FIXED_VALUE_TYPE , int, const FIXED_VALUE_TYPE , const FIXED_VALUE_TYPE *, bool)
bool	fixed_compare (int, const FIXED_VALUE_TYPE , const FIXED_VALUE_TYPE )
bool	fixed_isneg (const FIXED_VALUE_TYPE *)

Variables
FIXED_VALUE_TYPE	fconst0 [MAX_FCONST0]
FIXED_VALUE_TYPE	fconst1 [MAX_FCONST1]

Macro Definition Documentation

#define CONST_FIXED_FROM_FIXED_VALUE	(	r,
		m
	)	const_fixed_from_fixed_value (r, m)

Return a CONST_FIXED with value R and mode M.

Referenced by const_vector_from_tree(), expand_expr_real_1(), init_emit_once(), and simplify_immed_subreg().

#define FCONST0 ( mode ) fconst0[mode - QQmode]

Macros to access fconst0 and fconst1 via machine modes.

Referenced by build_zero_cst(), convert_to_fixed(), and init_emit_once().

#define FCONST1 ( mode ) fconst1[mode - HAmode]

Referenced by build_one_cst(), convert_to_fixed(), and init_emit_once().

#define FIXED_VALUE_NEGATIVE ( x ) fixed_isneg (&(x))

Determine whether a fixed-point value X is negative.

Referenced by tree_single_nonnegative_warnv_p().

#define FIXED_VALUE_TYPE struct fixed_value

Referenced by build_fixed(), const_binop(), fixed_from_double_int(), fold_convert_const_fixed_from_fixed(), fold_convert_const_fixed_from_int(), fold_convert_const_fixed_from_real(), fold_negate_const(), fold_relational_const(), hash_tree(), native_encode_fixed(), native_interpret_fixed(), print_node(), print_node_brief(), simplify_immed_subreg(), and unpack_ts_fixed_cst_value_fields().

#define FIXED_VALUES_IDENTICAL	(	x,
		y
	)	fixed_identical (&(x), &(y))

Referenced by compare_constant(), operand_equal_p(), and simple_cst_equal().

#define MAX_FCONST0

Value:

18 /* For storing 18 fixed-point zeros per

fract, ufract, accum, and uaccum modes . @endverbatim */

#define MAX_FCONST1

Value:

8 /* For storing 8 fixed-point ones per accum

and uaccum modes. @endverbatim */

Function Documentation

tree build_fixed	(	tree	,
		FIXED_VALUE_TYPE
	)

In tree.c: wrap up a FIXED_VALUE_TYPE in a tree node.

Referenced by build_minus_one_cst(), build_one_cst(), build_zero_cst(), const_binop(), convert_to_fixed(), fold_convert_const_fixed_from_fixed(), fold_convert_const_fixed_from_int(), fold_convert_const_fixed_from_real(), fold_negate_const(), and native_interpret_fixed().

static rtx const_fixed_from_double_int	(	double_int	payload,
		enum machine_mode	mode
	)

inlinestatic

Return a CONST_FIXED from a bit payload and machine mode MODE.
   The bits in PAYLOAD are sign-extended/zero-extended according to MODE.

References const_fixed_from_fixed_value(), and fixed_from_double_int().

rtx const_fixed_from_fixed_value	(	FIXED_VALUE_TYPE	,
		enum	machine_mode
	)

bool fixed_arithmetic	(	FIXED_VALUE_TYPE *	f,
		int	icode,
		const FIXED_VALUE_TYPE *	op0,
		const FIXED_VALUE_TYPE *	op1,
		bool	sat_p
	)

Binary or unary arithmetic on tree_code.

Perform the binary or unary operation described by CODE.
   Note that OP0 and OP1 must have the same mode for binary operators.
   For a unary operation, leave OP1 NULL.
   Return true, if !SAT_P and overflow.

References do_fixed_add(), do_fixed_divide(), do_fixed_multiply(), do_fixed_neg(), and do_fixed_shift().

Referenced by const_binop(), and fold_negate_const().

bool fixed_compare	(	int	icode,
		const FIXED_VALUE_TYPE *	op0,
		const FIXED_VALUE_TYPE *	op1
	)

Compare fixed-point values by tree_code.

Compare fixed-point values by tree_code.
   Note that OP0 and OP1 must have the same mode.

Referenced by fold_relational_const().

bool fixed_convert	(	FIXED_VALUE_TYPE *	f,
		enum machine_mode	mode,
		const FIXED_VALUE_TYPE *	a,
		bool	sat_p
	)

Extend or truncate to a new mode.

Extend or truncate to a new mode.
   If SAT_P, saturate the result to the max or the min.
   Return true, if !SAT_P and overflow.

References fixed_saturate1(), fixed_saturate2(), double_int::high, double_int::llshift(), double_int::lshift(), and double_int::sext().

Referenced by fold_convert_const_fixed_from_fixed().

bool fixed_convert_from_int	(	FIXED_VALUE_TYPE *	f,
		enum machine_mode	mode,
		double_int	a,
		bool	unsigned_p,
		bool	sat_p
	)

Convert to a fixed-point mode from an integer.

Convert to a new fixed-point mode from an integer.
   If UNSIGNED_P, this integer is unsigned.
   If SAT_P, saturate the result to the max or the min.
   Return true, if !SAT_P and overflow.

References fixed_saturate2(), double_int::high, double_int::llshift(), double_int::low, and double_int::sext().

Referenced by fold_convert_const_fixed_from_int().

bool fixed_convert_from_real	(	FIXED_VALUE_TYPE *	f,
		enum machine_mode	mode,
		const REAL_VALUE_TYPE *	a,
		bool	sat_p
	)

Convert to a fixed-point mode from a real.

Convert to a new fixed-point mode from a real.
   If SAT_P, saturate the result to the max or the min.
   Return true, if !SAT_P and overflow.

References check_real_for_fixed_mode(), FIXED_GT_MAX_EPS, FIXED_MAX_EPS, FIXED_UNDERFLOW, HOST_WIDE_INT, real_2expN(), real_arithmetic(), and real_to_integer2().

Referenced by fold_convert_const_fixed_from_real().

FIXED_VALUE_TYPE fixed_from_double_int	(	double_int	,
		enum	machine_mode
	)

Construct a FIXED_VALUE from a bit payload and machine mode MODE.
   The bits in PAYLOAD are sign-extended/zero-extended according to MODE.

void fixed_from_string	(	FIXED_VALUE_TYPE *	,
		const char *	,
		enum	machine_mode
	)

Initialize from a decimal or hexadecimal string.

unsigned int fixed_hash ( const FIXED_VALUE_TYPE * )

Calculate a hash value.

bool fixed_identical	(	const FIXED_VALUE_TYPE *	,
		const FIXED_VALUE_TYPE *
	)

Compare two fixed-point objects for bitwise identity.

bool fixed_isneg ( const FIXED_VALUE_TYPE * )

Determine whether a fixed-point value X is negative.

void fixed_to_decimal	(	char *	str,
		const FIXED_VALUE_TYPE *	f_orig,
		size_t	buf_size
	)

Render F as a decimal floating point constant.

References real_2expN(), real_arithmetic(), real_from_integer(), and real_to_decimal().

Referenced by dump_fixed(), dump_generic_node(), print_node(), print_node_brief(), and print_value().

void real_convert_from_fixed	(	REAL_VALUE_TYPE *	r,
		enum machine_mode	mode,
		const FIXED_VALUE_TYPE *	f
	)

Convert to a real mode from a fixed-point.

Convert to a new real mode from a fixed-point.

References real_2expN(), real_arithmetic(), real_convert(), and real_from_integer().

Referenced by fold_convert_const_real_from_fixed().

Variable Documentation

FIXED_VALUE_TYPE fconst0[MAX_FCONST0]

Constant fixed-point values 0 and 1.

Record fixed-point constant 0 and 1.

FIXED_VALUE_TYPE fconst1[MAX_FCONST1]

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation