178 lines
6.0 KiB
C
178 lines
6.0 KiB
C
/* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
|
|
Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001
|
|
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 2, 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 COPYING. If not, write to the Free
|
|
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|
|
02111-1307, USA. */
|
|
|
|
#ifndef HAVE_MACHINE_MODES
|
|
#define HAVE_MACHINE_MODES
|
|
|
|
/* Make an enum class that gives all the machine modes. */
|
|
|
|
#define DEF_MACHMODE(SYM, NAME, TYPE, BITSIZE, SIZE, UNIT, WIDER, INNER) SYM,
|
|
|
|
enum machine_mode {
|
|
#include "machmode.def"
|
|
MAX_MACHINE_MODE };
|
|
|
|
#undef DEF_MACHMODE
|
|
|
|
#ifndef NUM_MACHINE_MODES
|
|
#define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
|
|
#endif
|
|
|
|
/* 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[(int) (MODE)])
|
|
|
|
enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
|
|
MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT,
|
|
MODE_VECTOR_INT, MODE_VECTOR_FLOAT,
|
|
MAX_MODE_CLASS};
|
|
|
|
/* Get the general kind of object that mode MODE represents
|
|
(integer, floating, complex, etc.) */
|
|
|
|
extern const enum mode_class mode_class[NUM_MACHINE_MODES];
|
|
#define GET_MODE_CLASS(MODE) (mode_class[(int) (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_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)
|
|
|
|
/* 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 the size in bytes of an object of mode MODE. */
|
|
|
|
extern const unsigned char mode_size[NUM_MACHINE_MODES];
|
|
#define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)])
|
|
|
|
/* Get the size in bytes of the basic parts of an object of mode MODE. */
|
|
|
|
extern const unsigned char mode_unit_size[NUM_MACHINE_MODES];
|
|
#define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)])
|
|
|
|
/* Get the number of units in the object. */
|
|
|
|
#define GET_MODE_NUNITS(MODE) \
|
|
((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \
|
|
: (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE))))
|
|
|
|
/* Get the size in bits of an object of mode MODE. */
|
|
|
|
extern const unsigned short mode_bitsize[NUM_MACHINE_MODES];
|
|
#define GET_MODE_BITSIZE(MODE) (mode_bitsize[(int) (MODE)])
|
|
|
|
#endif /* not HAVE_MACHINE_MODES */
|
|
|
|
#if defined HOST_WIDE_INT && ! defined GET_MODE_MASK
|
|
|
|
/* 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[(int) (MODE)]
|
|
|
|
extern const enum machine_mode inner_mode_array[NUM_MACHINE_MODES];
|
|
|
|
/* Return the mode of the inner elements in a vector. */
|
|
|
|
#define GET_MODE_INNER(MODE) inner_mode_array[(int) (MODE)]
|
|
|
|
#endif /* defined (HOST_WIDE_INT) && ! defined GET_MODE_MASK */
|
|
|
|
#if ! defined GET_MODE_WIDER_MODE || ! defined GET_MODE_ALIGNMENT \
|
|
|| ! defined GET_CLASS_NARROWEST_MODE
|
|
|
|
/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
|
|
|
|
extern const unsigned char mode_wider_mode[NUM_MACHINE_MODES];
|
|
#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (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 PARAMS ((unsigned int,
|
|
enum mode_class, int));
|
|
|
|
/* Similar, but find the smallest mode for a given width. */
|
|
|
|
extern enum machine_mode smallest_mode_for_size
|
|
PARAMS ((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 PARAMS ((enum machine_mode));
|
|
|
|
/* Find the best mode to use to access a bit field. */
|
|
|
|
extern enum machine_mode get_best_mode PARAMS ((int, int, unsigned int,
|
|
enum machine_mode, int));
|
|
|
|
/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
|
|
|
|
extern unsigned get_mode_alignment PARAMS ((enum machine_mode));
|
|
|
|
#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)
|
|
|
|
/* For each class, get the narrowest mode in that class. */
|
|
|
|
extern const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS];
|
|
#define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (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;
|
|
|
|
#endif /* ! defined GET_MODE_WIDER_MODE || ! defined GET_MODE_ALIGNMENT
|
|
|| ! defined GET_CLASS_NARROWEST_MODE */
|