1 /* Machine mode definitions for GCC; included by rtl.h and tree.h. 2 Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 2, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 #ifndef HAVE_MACHINE_MODES 23 #define HAVE_MACHINE_MODES 24 25 /* Make an enum class that gives all the machine modes. */ 26 #include "insn-modes.h" 27 28 /* Get the name of mode MODE as a string. */ 29 30 extern const char * const mode_name[NUM_MACHINE_MODES]; 31 #define GET_MODE_NAME(MODE) mode_name[MODE] 32 33 /* Mode classes. */ 34 35 #include "mode-classes.def" 36 #define DEF_MODE_CLASS(M) M 37 enum mode_class { MODE_CLASSES, MAX_MODE_CLASS }; 38 #undef DEF_MODE_CLASS 39 #undef MODE_CLASSES 40 41 /* Get the general kind of object that mode MODE represents 42 (integer, floating, complex, etc.) */ 43 44 extern const unsigned char mode_class[NUM_MACHINE_MODES]; 45 #define GET_MODE_CLASS(MODE) mode_class[MODE] 46 47 /* Nonzero if MODE is an integral mode. */ 48 #define INTEGRAL_MODE_P(MODE) \ 49 (GET_MODE_CLASS (MODE) == MODE_INT \ 50 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ 51 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 52 || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT) 53 54 /* Nonzero if MODE is a floating-point mode. */ 55 #define FLOAT_MODE_P(MODE) \ 56 (GET_MODE_CLASS (MODE) == MODE_FLOAT \ 57 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \ 58 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) 59 60 /* Nonzero if MODE is a complex mode. */ 61 #define COMPLEX_MODE_P(MODE) \ 62 (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 63 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) 64 65 /* Nonzero if MODE is a vector mode. */ 66 #define VECTOR_MODE_P(MODE) \ 67 (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \ 68 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) 69 70 /* Nonzero if MODE is a scalar integral mode. */ 71 #define SCALAR_INT_MODE_P(MODE) \ 72 (GET_MODE_CLASS (MODE) == MODE_INT \ 73 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT) 74 75 /* Nonzero if MODE is a scalar floating point mode. */ 76 #define SCALAR_FLOAT_MODE_P(MODE) \ 77 (GET_MODE_CLASS (MODE) == MODE_FLOAT) 78 79 /* Get the size in bytes and bits of an object of mode MODE. */ 80 81 extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES]; 82 #define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE]) 83 #define GET_MODE_BITSIZE(MODE) ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT)) 84 85 /* Get the number of value bits of an object of mode MODE. */ 86 extern const unsigned short mode_precision[NUM_MACHINE_MODES]; 87 #define GET_MODE_PRECISION(MODE) mode_precision[MODE] 88 89 /* Get a bitmask containing 1 for all bits in a word 90 that fit within mode MODE. */ 91 92 extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES]; 93 94 #define GET_MODE_MASK(MODE) mode_mask_array[MODE] 95 96 /* Return the mode of the inner elements in a vector. */ 97 98 extern const unsigned char mode_inner[NUM_MACHINE_MODES]; 99 #define GET_MODE_INNER(MODE) mode_inner[MODE] 100 101 /* Get the size in bytes of the basic parts of an object of mode MODE. */ 102 103 #define GET_MODE_UNIT_SIZE(MODE) \ 104 (GET_MODE_INNER (MODE) == VOIDmode \ 105 ? GET_MODE_SIZE (MODE) \ 106 : GET_MODE_SIZE (GET_MODE_INNER (MODE))) 107 108 /* Get the number of units in the object. */ 109 110 extern const unsigned char mode_nunits[NUM_MACHINE_MODES]; 111 #define GET_MODE_NUNITS(MODE) mode_nunits[MODE] 112 113 /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ 114 115 extern const unsigned char mode_wider[NUM_MACHINE_MODES]; 116 #define GET_MODE_WIDER_MODE(MODE) mode_wider[MODE] 117 118 /* Return the mode for data of a given size SIZE and mode class CLASS. 119 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. 120 The value is BLKmode if no other mode is found. */ 121 122 extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int); 123 124 /* Similar, but find the smallest mode for a given width. */ 125 126 extern enum machine_mode smallest_mode_for_size (unsigned int, 127 enum mode_class); 128 129 130 /* Return an integer mode of the exact same size as the input mode, 131 or BLKmode on failure. */ 132 133 extern enum machine_mode int_mode_for_mode (enum machine_mode); 134 135 /* Find the best mode to use to access a bit field. */ 136 137 extern enum machine_mode get_best_mode (int, int, unsigned int, 138 enum machine_mode, int); 139 140 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ 141 142 extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES]; 143 144 extern unsigned get_mode_alignment (enum machine_mode); 145 146 #define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE) 147 148 /* For each class, get the narrowest mode in that class. */ 149 150 extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS]; 151 #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[CLASS] 152 153 /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD 154 and the mode whose class is Pmode and whose size is POINTER_SIZE. */ 155 156 extern enum machine_mode byte_mode; 157 extern enum machine_mode word_mode; 158 extern enum machine_mode ptr_mode; 159 160 /* Target-dependent machine mode initialization - in insn-modes.c. */ 161 extern void init_adjust_machine_modes (void); 162 163 #endif /* not HAVE_MACHINE_MODES */ 164