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1 /* Machine mode definitions for GCC; included by rtl.h and tree.h.
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2 Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003,
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3 2007, 2008 Free Software Foundation, Inc.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it under
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8 the terms of the GNU General Public License as published by the Free
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9 Software Foundation; either version 3, or (at your option) any later
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10 version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 #ifndef HAVE_MACHINE_MODES
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22 #define HAVE_MACHINE_MODES
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23
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24 /* Make an enum class that gives all the machine modes. */
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25 #include "insn-modes.h"
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26
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27 /* Get the name of mode MODE as a string. */
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28
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29 extern const char * const mode_name[NUM_MACHINE_MODES];
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30 #define GET_MODE_NAME(MODE) mode_name[MODE]
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31
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32 /* Mode classes. */
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33
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34 #include "mode-classes.def"
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35 #define DEF_MODE_CLASS(M) M
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36 enum mode_class { MODE_CLASSES, MAX_MODE_CLASS };
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37 #undef DEF_MODE_CLASS
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38 #undef MODE_CLASSES
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39
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40 /* Get the general kind of object that mode MODE represents
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41 (integer, floating, complex, etc.) */
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42
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43 extern const unsigned char mode_class[NUM_MACHINE_MODES];
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44 #define GET_MODE_CLASS(MODE) mode_class[MODE]
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45
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46 /* Nonzero if MODE is an integral mode. */
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47 #define INTEGRAL_MODE_P(MODE) \
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48 (GET_MODE_CLASS (MODE) == MODE_INT \
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49 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
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50 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
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51 || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT)
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52
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53 /* Nonzero if MODE is a floating-point mode. */
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54 #define FLOAT_MODE_P(MODE) \
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55 (GET_MODE_CLASS (MODE) == MODE_FLOAT \
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56 || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \
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57 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
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58 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)
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59
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60 /* Nonzero if MODE is a complex mode. */
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61 #define COMPLEX_MODE_P(MODE) \
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62 (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
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63 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
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64
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65 /* Nonzero if MODE is a vector mode. */
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66 #define VECTOR_MODE_P(MODE) \
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67 (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \
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68 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \
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69 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \
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70 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \
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71 || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \
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72 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
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73
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74 /* Nonzero if MODE is a scalar integral mode. */
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75 #define SCALAR_INT_MODE_P(MODE) \
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76 (GET_MODE_CLASS (MODE) == MODE_INT \
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77 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT)
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78
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79 /* Nonzero if MODE is a scalar floating point mode. */
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80 #define SCALAR_FLOAT_MODE_P(MODE) \
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81 (GET_MODE_CLASS (MODE) == MODE_FLOAT \
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82 || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
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83
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84 /* Nonzero if MODE is a decimal floating point mode. */
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85 #define DECIMAL_FLOAT_MODE_P(MODE) \
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86 (GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
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87
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88 /* Nonzero if MODE is a scalar fract mode. */
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89 #define SCALAR_FRACT_MODE_P(MODE) \
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90 (GET_MODE_CLASS (MODE) == MODE_FRACT)
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91
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92 /* Nonzero if MODE is a scalar ufract mode. */
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93 #define SCALAR_UFRACT_MODE_P(MODE) \
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94 (GET_MODE_CLASS (MODE) == MODE_UFRACT)
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95
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96 /* Nonzero if MODE is a scalar fract or ufract mode. */
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97 #define ALL_SCALAR_FRACT_MODE_P(MODE) \
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98 (SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE))
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99
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100 /* Nonzero if MODE is a scalar accum mode. */
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101 #define SCALAR_ACCUM_MODE_P(MODE) \
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102 (GET_MODE_CLASS (MODE) == MODE_ACCUM)
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103
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104 /* Nonzero if MODE is a scalar uaccum mode. */
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105 #define SCALAR_UACCUM_MODE_P(MODE) \
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106 (GET_MODE_CLASS (MODE) == MODE_UACCUM)
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107
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108 /* Nonzero if MODE is a scalar accum or uaccum mode. */
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109 #define ALL_SCALAR_ACCUM_MODE_P(MODE) \
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110 (SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
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111
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112 /* Nonzero if MODE is a scalar fract or accum mode. */
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113 #define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
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114 (SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE))
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115
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116 /* Nonzero if MODE is a scalar ufract or uaccum mode. */
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117 #define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
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118 (SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
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119
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120 /* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */
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121 #define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \
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122 (SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \
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123 || UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE))
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124
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125 /* Nonzero if MODE is a scalar/vector fract mode. */
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126 #define FRACT_MODE_P(MODE) \
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127 (GET_MODE_CLASS (MODE) == MODE_FRACT \
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128 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT)
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129
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130 /* Nonzero if MODE is a scalar/vector ufract mode. */
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131 #define UFRACT_MODE_P(MODE) \
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132 (GET_MODE_CLASS (MODE) == MODE_UFRACT \
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133 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT)
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134
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135 /* Nonzero if MODE is a scalar/vector fract or ufract mode. */
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136 #define ALL_FRACT_MODE_P(MODE) \
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137 (FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE))
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138
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139 /* Nonzero if MODE is a scalar/vector accum mode. */
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140 #define ACCUM_MODE_P(MODE) \
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141 (GET_MODE_CLASS (MODE) == MODE_ACCUM \
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142 || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM)
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143
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144 /* Nonzero if MODE is a scalar/vector uaccum mode. */
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145 #define UACCUM_MODE_P(MODE) \
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146 (GET_MODE_CLASS (MODE) == MODE_UACCUM \
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147 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
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148
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149 /* Nonzero if MODE is a scalar/vector accum or uaccum mode. */
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150 #define ALL_ACCUM_MODE_P(MODE) \
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151 (ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE))
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152
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153 /* Nonzero if MODE is a scalar/vector fract or accum mode. */
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154 #define SIGNED_FIXED_POINT_MODE_P(MODE) \
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155 (FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE))
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156
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157 /* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */
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158 #define UNSIGNED_FIXED_POINT_MODE_P(MODE) \
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159 (UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE))
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160
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161 /* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */
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162 #define ALL_FIXED_POINT_MODE_P(MODE) \
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163 (SIGNED_FIXED_POINT_MODE_P (MODE) \
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164 || UNSIGNED_FIXED_POINT_MODE_P (MODE))
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165
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166 /* Nonzero if CLASS modes can be widened. */
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167 #define CLASS_HAS_WIDER_MODES_P(CLASS) \
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168 (CLASS == MODE_INT \
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169 || CLASS == MODE_FLOAT \
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170 || CLASS == MODE_DECIMAL_FLOAT \
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171 || CLASS == MODE_COMPLEX_FLOAT \
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172 || CLASS == MODE_FRACT \
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173 || CLASS == MODE_UFRACT \
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174 || CLASS == MODE_ACCUM \
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175 || CLASS == MODE_UACCUM)
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176
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177 /* Get the size in bytes and bits of an object of mode MODE. */
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178
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179 extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES];
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180 #define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
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181 #define GET_MODE_BITSIZE(MODE) ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))
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182
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183 /* Get the number of value bits of an object of mode MODE. */
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184 extern const unsigned short mode_precision[NUM_MACHINE_MODES];
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185 #define GET_MODE_PRECISION(MODE) mode_precision[MODE]
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186
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187 /* Get the number of integral bits of an object of mode MODE. */
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188 extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES];
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189 #define GET_MODE_IBIT(MODE) mode_ibit[MODE]
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190
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191 /* Get the number of fractional bits of an object of mode MODE. */
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192 extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES];
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193 #define GET_MODE_FBIT(MODE) mode_fbit[MODE]
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194
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195 /* Get a bitmask containing 1 for all bits in a word
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196 that fit within mode MODE. */
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197
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198 extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES];
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199
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200 #define GET_MODE_MASK(MODE) mode_mask_array[MODE]
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201
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202 /* Return the mode of the inner elements in a vector. */
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203
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204 extern const unsigned char mode_inner[NUM_MACHINE_MODES];
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205 #define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE])
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206
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207 /* Get the size in bytes of the basic parts of an object of mode MODE. */
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208
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209 #define GET_MODE_UNIT_SIZE(MODE) \
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210 (GET_MODE_INNER (MODE) == VOIDmode \
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211 ? GET_MODE_SIZE (MODE) \
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212 : GET_MODE_SIZE (GET_MODE_INNER (MODE)))
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213
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214 /* Get the number of units in the object. */
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215
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216 extern const unsigned char mode_nunits[NUM_MACHINE_MODES];
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217 #define GET_MODE_NUNITS(MODE) mode_nunits[MODE]
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218
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219 /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
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220
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221 extern const unsigned char mode_wider[NUM_MACHINE_MODES];
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222 #define GET_MODE_WIDER_MODE(MODE) mode_wider[MODE]
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223
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224 extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
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225 #define GET_MODE_2XWIDER_MODE(MODE) mode_2xwider[MODE]
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226
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227 /* Return the mode for data of a given size SIZE and mode class CLASS.
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228 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
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229 The value is BLKmode if no other mode is found. */
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230
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231 extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int);
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232
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233 /* Similar, but find the smallest mode for a given width. */
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234
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235 extern enum machine_mode smallest_mode_for_size (unsigned int,
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236 enum mode_class);
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237
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238
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239 /* Return an integer mode of the exact same size as the input mode,
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240 or BLKmode on failure. */
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241
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242 extern enum machine_mode int_mode_for_mode (enum machine_mode);
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243
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244 /* Find the best mode to use to access a bit field. */
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245
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246 extern enum machine_mode get_best_mode (int, int, unsigned int,
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247 enum machine_mode, int);
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248
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249 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
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250
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251 extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES];
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252
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253 extern unsigned get_mode_alignment (enum machine_mode);
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254
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255 #define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)
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256
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257 /* For each class, get the narrowest mode in that class. */
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258
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259 extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
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260 #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[CLASS]
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261
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262 /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
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263 and the mode whose class is Pmode and whose size is POINTER_SIZE. */
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264
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265 extern enum machine_mode byte_mode;
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266 extern enum machine_mode word_mode;
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267 extern enum machine_mode ptr_mode;
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268
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269 /* Target-dependent machine mode initialization - in insn-modes.c. */
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270 extern void init_adjust_machine_modes (void);
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271
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272 #endif /* not HAVE_MACHINE_MODES */
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