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/* Machine mode definitions for GCC; included by rtl.h and tree.h.
Copyright (C) 1991-2013 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef HAVE_MACHINE_MODES
#define HAVE_MACHINE_MODES
/* Make an enum class that gives all the machine modes. */
#include "insn-modes.h"
/* Get the name of mode MODE as a string. */
extern const char * const mode_name[NUM_MACHINE_MODES];
#define GET_MODE_NAME(MODE) mode_name[MODE]
/* Mode classes. */
#include "mode-classes.def"
#define DEF_MODE_CLASS(M) M
enum mode_class { MODE_CLASSES, MAX_MODE_CLASS };
#undef DEF_MODE_CLASS
#undef MODE_CLASSES
/* Get the general kind of object that mode MODE represents
(integer, floating, complex, etc.) */
extern const unsigned char mode_class[NUM_MACHINE_MODES];
#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE])
/* Nonzero if MODE is an integral mode. */
#define INTEGRAL_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_INT \
|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_INT)
/* Nonzero if MODE is a floating-point mode. */
#define FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)
/* Nonzero if MODE is a complex mode. */
#define COMPLEX_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
/* Nonzero if MODE is a vector mode. */
#define VECTOR_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
/* Nonzero if MODE is a scalar integral mode. */
#define SCALAR_INT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_INT \
|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT)
/* Nonzero if MODE is a scalar floating point mode. */
#define SCALAR_FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
/* Nonzero if MODE is a decimal floating point mode. */
#define DECIMAL_FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
/* Nonzero if MODE is a scalar fract mode. */
#define SCALAR_FRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FRACT)
/* Nonzero if MODE is a scalar ufract mode. */
#define SCALAR_UFRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UFRACT)
/* Nonzero if MODE is a scalar fract or ufract mode. */
#define ALL_SCALAR_FRACT_MODE_P(MODE) \
(SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE))
/* Nonzero if MODE is a scalar accum mode. */
#define SCALAR_ACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_ACCUM)
/* Nonzero if MODE is a scalar uaccum mode. */
#define SCALAR_UACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UACCUM)
/* Nonzero if MODE is a scalar accum or uaccum mode. */
#define ALL_SCALAR_ACCUM_MODE_P(MODE) \
(SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar fract or accum mode. */
#define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar ufract or uaccum mode. */
#define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */
#define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \
|| UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE))
/* Nonzero if MODE is a scalar/vector fract mode. */
#define FRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT)
/* Nonzero if MODE is a scalar/vector ufract mode. */
#define UFRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UFRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT)
/* Nonzero if MODE is a scalar/vector fract or ufract mode. */
#define ALL_FRACT_MODE_P(MODE) \
(FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE))
/* Nonzero if MODE is a scalar/vector accum mode. */
#define ACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_ACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM)
/* Nonzero if MODE is a scalar/vector uaccum mode. */
#define UACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
/* Nonzero if MODE is a scalar/vector accum or uaccum mode. */
#define ALL_ACCUM_MODE_P(MODE) \
(ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar/vector fract or accum mode. */
#define SIGNED_FIXED_POINT_MODE_P(MODE) \
(FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */
#define UNSIGNED_FIXED_POINT_MODE_P(MODE) \
(UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE))
/* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */
#define ALL_FIXED_POINT_MODE_P(MODE) \
(SIGNED_FIXED_POINT_MODE_P (MODE) \
|| UNSIGNED_FIXED_POINT_MODE_P (MODE))
/* Nonzero if CLASS modes can be widened. */
#define CLASS_HAS_WIDER_MODES_P(CLASS) \
(CLASS == MODE_INT \
|| CLASS == MODE_PARTIAL_INT \
|| CLASS == MODE_FLOAT \
|| CLASS == MODE_DECIMAL_FLOAT \
|| CLASS == MODE_COMPLEX_FLOAT \
|| CLASS == MODE_FRACT \
|| CLASS == MODE_UFRACT \
|| CLASS == MODE_ACCUM \
|| CLASS == MODE_UACCUM)
/* Get the size in bytes and bits of an object of mode MODE. */
extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES];
#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
#define GET_MODE_BITSIZE(MODE) \
((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))
/* Get the number of value bits of an object of mode MODE. */
extern const unsigned short mode_precision[NUM_MACHINE_MODES];
#define GET_MODE_PRECISION(MODE) mode_precision[MODE]
/* Get the number of integral bits of an object of mode MODE. */
extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES];
#define GET_MODE_IBIT(MODE) mode_ibit[MODE]
/* Get the number of fractional bits of an object of mode MODE. */
extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES];
#define GET_MODE_FBIT(MODE) mode_fbit[MODE]
/* Get a bitmask containing 1 for all bits in a word
that fit within mode MODE. */
extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES];
#define GET_MODE_MASK(MODE) mode_mask_array[MODE]
/* Return the mode of the inner elements in a vector. */
extern const unsigned char mode_inner[NUM_MACHINE_MODES];
#define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE])
/* Get the size in bytes or bites of the basic parts of an
object of mode MODE. */
#define GET_MODE_UNIT_SIZE(MODE) \
(GET_MODE_INNER (MODE) == VOIDmode \
? GET_MODE_SIZE (MODE) \
: GET_MODE_SIZE (GET_MODE_INNER (MODE)))
#define GET_MODE_UNIT_BITSIZE(MODE) \
((unsigned short) (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))
#define GET_MODE_UNIT_PRECISION(MODE) \
(GET_MODE_INNER (MODE) == VOIDmode \
? GET_MODE_PRECISION (MODE) \
: GET_MODE_PRECISION (GET_MODE_INNER (MODE)))
/* Get the number of units in the object. */
extern const unsigned char mode_nunits[NUM_MACHINE_MODES];
#define GET_MODE_NUNITS(MODE) mode_nunits[MODE]
/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
extern const unsigned char mode_wider[NUM_MACHINE_MODES];
#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode) mode_wider[MODE])
/* For scalars, this is a mode with twice the precision. For vectors,
this is a mode with the same inner mode but with twice the elements. */
extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
#define GET_MODE_2XWIDER_MODE(MODE) ((enum machine_mode) mode_2xwider[MODE])
/* Return the mode for data of a given size SIZE and mode class CLASS.
If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
The value is BLKmode if no other mode is found. */
extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int);
/* Similar, but find the smallest mode for a given width. */
extern enum machine_mode smallest_mode_for_size (unsigned int,
enum mode_class);
/* Return an integer mode of the exact same size as the input mode,
or BLKmode on failure. */
extern enum machine_mode int_mode_for_mode (enum machine_mode);
/* Return a mode that is suitable for representing a vector,
or BLKmode on failure. */
extern enum machine_mode mode_for_vector (enum machine_mode, unsigned);
/* A class for iterating through possible bitfield modes. */
class bit_field_mode_iterator
{
public:
bit_field_mode_iterator (HOST_WIDE_INT, HOST_WIDE_INT,
HOST_WIDE_INT, HOST_WIDE_INT,
unsigned int, bool);
bool next_mode (enum machine_mode *);
bool prefer_smaller_modes ();
private:
enum machine_mode mode_;
/* We use signed values here because the bit position can be negative
for invalid input such as gcc.dg/pr48335-8.c. */
HOST_WIDE_INT bitsize_;
HOST_WIDE_INT bitpos_;
HOST_WIDE_INT bitregion_start_;
HOST_WIDE_INT bitregion_end_;
unsigned int align_;
bool volatilep_;
int count_;
};
/* Find the best mode to use to access a bit field. */
extern enum machine_mode get_best_mode (int, int,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned int,
enum machine_mode, bool);
/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES];
extern unsigned get_mode_alignment (enum machine_mode);
#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)
/* For each class, get the narrowest mode in that class. */
extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
#define GET_CLASS_NARROWEST_MODE(CLASS) \
((enum machine_mode) class_narrowest_mode[CLASS])
/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
and the mode whose class is Pmode and whose size is POINTER_SIZE. */
extern enum machine_mode byte_mode;
extern enum machine_mode word_mode;
extern enum machine_mode ptr_mode;
/* Target-dependent machine mode initialization - in insn-modes.c. */
extern void init_adjust_machine_modes (void);
#define TRULY_NOOP_TRUNCATION_MODES_P(MODE1, MODE2) \
TRULY_NOOP_TRUNCATION (GET_MODE_PRECISION (MODE1), \
GET_MODE_PRECISION (MODE2))
#define HWI_COMPUTABLE_MODE_P(MODE) \
(SCALAR_INT_MODE_P (MODE) \
&& GET_MODE_PRECISION (MODE) <= HOST_BITS_PER_WIDE_INT)
#endif /* not HAVE_MACHINE_MODES */
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