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1 ;; Constraint definitions for Blackfin
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2 ;; Copyright (C) 2008-2018 Free Software Foundation, Inc.
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3 ;; Contributed by Analog Devices
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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
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8 ;; under the terms of the GNU General Public License as published
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9 ;; by the Free Software Foundation; either version 3, or (at your
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10 ;; option) any later version.
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11
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12 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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14 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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15 ;; License 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 (define_register_constraint "a" "PREGS"
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22 "A Pn register.")
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23
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24 (define_register_constraint "d" "DREGS"
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25 "A Rn register.")
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26
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27 (define_register_constraint "z" "PREGS_CLOBBERED"
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28 "A call clobbered Pn register.")
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29
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30 (define_register_constraint "D" "EVEN_DREGS"
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31 "An even-numbered Rn register.")
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32
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33 (define_register_constraint "W" "ODD_DREGS"
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34 "An odd-numbered Rn register.")
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35
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36 (define_register_constraint "e" "AREGS"
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37 "An accumulator register.")
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38
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39 (define_register_constraint "A" "EVEN_AREGS"
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40 "An even-numbered accumulator; A0.")
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41
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42 (define_register_constraint "B" "ODD_AREGS"
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43 "An odd-numbered accumulator; A1.")
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44
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45 (define_register_constraint "b" "IREGS"
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46 "An I register.")
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47
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48 (define_register_constraint "v" "BREGS"
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49 "A B register.")
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50
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51 (define_register_constraint "f" "MREGS"
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52 "An M register.")
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53
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54 (define_register_constraint "c" "CIRCREGS"
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55 "A register used for circular buffering, i.e. I, B, or L registers.")
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56
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57 (define_register_constraint "C" "CCREGS"
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58 "The CC register.")
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59
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60 (define_register_constraint "t" "LT_REGS"
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61 "LT0 or LT1.")
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62
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63 (define_register_constraint "u" "LB_REGS"
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64 "LB0 or LB1.")
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65
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66 (define_register_constraint "k" "LC_REGS"
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67 "LC0 or LC1.")
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68
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69 (define_register_constraint "x" "MOST_REGS"
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70 "Any R, P, B, M, I or L register.")
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71
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72 (define_register_constraint "y" "PROLOGUE_REGS"
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73 "Additional registers typically used only in prologues and epilogues:
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74 RETS, RETN, RETI, RETX, RETE, ASTAT, SEQSTAT and USP.")
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75
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76 (define_register_constraint "w" "NON_A_CC_REGS"
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77 "Any register except accumulators or CC.")
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78
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79 (define_register_constraint "Z" "FDPIC_REGS"
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80 "@internal The FD-PIC GOT pointer; P3.")
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81
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82 (define_register_constraint "Y" "FDPIC_FPTR_REGS"
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83 "@internal The FD-PIC function pointer register; P1.")
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84
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85 (define_register_constraint "q0" "D0REGS"
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86 "The register R0.")
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87
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88 (define_register_constraint "q1" "D1REGS"
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89 "The register R1.")
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90
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91 (define_register_constraint "q2" "D2REGS"
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92 "The register R2.")
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93
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94 (define_register_constraint "q3" "D3REGS"
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95 "The register R3.")
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96
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97 (define_register_constraint "q4" "D4REGS"
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98 "The register R4.")
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99
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100 (define_register_constraint "q5" "D5REGS"
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101 "The register R5.")
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102
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103 (define_register_constraint "q6" "D6REGS"
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104 "The register R6.")
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105
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106 (define_register_constraint "q7" "D7REGS"
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107 "The register R7.")
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108
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109 (define_register_constraint "qA" "P0REGS"
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110 "The register P0.")
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111
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112 ;; Constant constraints.
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113
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114 (define_constraint "J"
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115 "A constant value of the form 2**N, where N 5-bit wide."
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116 (and (match_code "const_int")
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117 (match_test "log2constp (ival)")))
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118
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119 (define_constraint "Ks3"
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120 "A signed 3 bit immediate."
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121 (and (match_code "const_int")
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122 (match_test "ival >= -4 && ival <= 3")))
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123
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124 (define_constraint "Ku3"
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125 "An unsigned 3 bit immediate."
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126 (and (match_code "const_int")
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127 (match_test "ival >= 0 && ival <= 7")))
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128
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129 (define_constraint "Ks4"
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130 "A signed 4 bit immediate."
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131 (and (match_code "const_int")
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132 (match_test "ival >= -8 && ival <= 7")))
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133
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134 (define_constraint "Ku4"
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135 "An unsigned 4 bit immediate."
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136 (and (match_code "const_int")
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137 (match_test "ival >= 0 && ival <= 15")))
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138
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139 (define_constraint "Ks5"
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140 "A signed 5 bit immediate."
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141 (and (match_code "const_int")
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142 (match_test "ival >= -16 && ival <= 15")))
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143
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144 (define_constraint "Ku5"
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145 "An unsigned 5 bit immediate."
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146 (and (match_code "const_int")
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147 (match_test "ival >= 0 && ival <= 31")))
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148
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149 (define_constraint "Ks7"
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150 "A signed 7 bit immediate."
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151 (and (match_code "const_int")
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152 (match_test "ival >= -64 && ival <= 63")))
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153
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154 (define_constraint "KN7"
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155 "A constant that when negated is a signed 7 bit immediate."
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156 (and (match_code "const_int")
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157 (match_test "ival >= -63 && ival <= 64")))
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158
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159 (define_constraint "Ksh"
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160 "A signed 16 bit immediate."
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161 (and (match_code "const_int")
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162 (match_test "ival >= -32768 && ival <= 32767")))
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163
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164 (define_constraint "Kuh"
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165 "An unsigned 16 bit immediate."
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166 (and (match_code "const_int")
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167 (match_test "ival >= 0 && ival <= 65535")))
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168
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169 (define_constraint "L"
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170 "A constant value of the form ~(2**N)."
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171 (and (match_code "const_int")
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172 (match_test "log2constp (~ival)")))
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173
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174 (define_constraint "M1"
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175 "An integer with the value 255."
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176 (and (match_code "const_int")
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177 (match_test "ival == 255")))
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178
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179 (define_constraint "M2"
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180 "An integer with the value 65535."
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181 (and (match_code "const_int")
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182 (match_test "ival == 65535")))
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183
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184 (define_constraint "P0"
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185 "An integer with the value 0."
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186 (and (match_code "const_int")
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187 (match_test "ival == 0")))
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188
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189 (define_constraint "P1"
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190 "An integer with the value 1."
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191 (and (match_code "const_int")
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192 (match_test "ival == 1")))
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193
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194 (define_constraint "P2"
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195 "An integer with the value 2."
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196 (and (match_code "const_int")
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197 (match_test "ival == 2")))
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198
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199 (define_constraint "P3"
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200 "An integer with the value 3."
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201 (and (match_code "const_int")
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202 (match_test "ival == 3")))
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203
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204 (define_constraint "P4"
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205 "An integer with the value 4."
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206 (and (match_code "const_int")
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207 (match_test "ival == 4")))
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208
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209 (define_constraint "PA"
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210 "An integer constant describing any macflag except variants involving M."
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211 (and (match_code "const_int")
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212 (match_test "ival != MACFLAG_M && ival != MACFLAG_IS_M")))
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213
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214 (define_constraint "PB"
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215 "An integer constant describing any macflag involving M."
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216 (and (match_code "const_int")
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217 (match_test "ival == MACFLAG_M || ival == MACFLAG_IS_M")))
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218
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219
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220 ;; Extra constraints
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221
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222 (define_constraint "Q"
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223 "A SYMBOL_REF."
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224 (match_code "symbol_ref"))
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225
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