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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/machmode.h')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/machmode.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/machmode.h b/gcc-4.2.1-5666.3/gcc/machmode.h new file mode 100644 index 000000000..3948fc938 --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/machmode.h @@ -0,0 +1,179 @@ +/* Machine mode definitions for GCC; included by rtl.h and tree.h. + Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003 + 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, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ + +#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) 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) + +/* 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 CLASS modes can be widened. */ +#define CLASS_HAS_WIDER_MODES_P(CLASS) \ + (CLASS == MODE_INT \ + || CLASS == MODE_FLOAT \ + || CLASS == MODE_DECIMAL_FLOAT \ + || CLASS == MODE_COMPLEX_FLOAT) + +/* 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 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) mode_inner[MODE] + +/* Get the size in bytes 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))) + +/* 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) mode_wider[MODE] + +extern const unsigned char mode_2xwider[NUM_MACHINE_MODES]; +#define GET_MODE_2XWIDER_MODE(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); + +/* Find the best mode to use to access a bit field. */ + +extern enum machine_mode get_best_mode (int, int, unsigned int, + enum machine_mode, int); + +/* 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) 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); + +#endif /* not HAVE_MACHINE_MODES */ |