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1 ;; Predicate definitions for IA-64.
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2 ;; Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
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3 ;;
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4 ;; This file is part of GCC.
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5 ;;
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6 ;; GCC is free software; you can redistribute it and/or modify
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7 ;; it under the terms of the GNU General Public License as published by
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8 ;; the Free Software Foundation; either version 3, or (at your option)
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9 ;; any later version.
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10 ;;
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11 ;; GCC is distributed in the hope that it will be useful,
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12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ;; GNU General Public License for more details.
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15 ;;
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with GCC; see the file COPYING3. If not see
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18 ;; <http://www.gnu.org/licenses/>.
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19
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20 ;; True if OP is a valid operand for the MEM of a CALL insn.
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21 (define_predicate "call_operand"
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22 (ior (match_code "symbol_ref")
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23 (match_operand 0 "register_operand")))
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24
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25 ;; True if OP refers to any kind of symbol.
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26 ;; For roughly the same reasons that pmode_register_operand exists, this
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27 ;; predicate ignores its mode argument.
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28 (define_special_predicate "symbolic_operand"
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29 (match_code "symbol_ref,const,label_ref"))
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30
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31 ;; True if OP is a SYMBOL_REF which refers to a function.
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32 (define_predicate "function_operand"
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33 (and (match_code "symbol_ref")
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34 (match_test "SYMBOL_REF_FUNCTION_P (op)")))
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35
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36 ;; True if OP refers to a symbol in the sdata section.
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37 (define_predicate "sdata_symbolic_operand"
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38 (match_code "symbol_ref,const")
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39 {
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40 HOST_WIDE_INT offset = 0, size = 0;
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41
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42 switch (GET_CODE (op))
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43 {
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44 case CONST:
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45 op = XEXP (op, 0);
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46 if (GET_CODE (op) != PLUS
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47 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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48 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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49 return false;
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50 offset = INTVAL (XEXP (op, 1));
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51 op = XEXP (op, 0);
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52 /* FALLTHRU */
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53
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54 case SYMBOL_REF:
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55 if (CONSTANT_POOL_ADDRESS_P (op))
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56 {
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57 size = GET_MODE_SIZE (get_pool_mode (op));
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58 if (size > ia64_section_threshold)
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59 return false;
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60 }
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61 else
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62 {
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63 tree t;
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64
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65 if (!SYMBOL_REF_LOCAL_P (op) || !SYMBOL_REF_SMALL_P (op))
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66 return false;
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67
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68 /* Note that in addition to DECLs, we can get various forms
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69 of constants here. */
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70 t = SYMBOL_REF_DECL (op);
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71 if (DECL_P (t))
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72 t = DECL_SIZE_UNIT (t);
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73 else
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74 t = TYPE_SIZE_UNIT (TREE_TYPE (t));
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75 if (t && host_integerp (t, 0))
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76 {
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77 size = tree_low_cst (t, 0);
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78 if (size < 0)
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79 size = 0;
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80 }
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81 }
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82
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83 /* Deny the stupid user trick of addressing outside the object. Such
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84 things quickly result in GPREL22 relocation overflows. Of course,
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85 they're also highly undefined. From a pure pedant's point of view
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86 they deserve a slap on the wrist (such as provided by a relocation
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87 overflow), but that just leads to bugzilla noise. */
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88 return (offset >= 0 && offset <= size);
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89
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90 default:
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91 gcc_unreachable ();
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92 }
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93 })
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94
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95 ;; True if OP refers to a symbol in the small address area.
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96 (define_predicate "small_addr_symbolic_operand"
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97 (match_code "symbol_ref,const")
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98 {
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99 switch (GET_CODE (op))
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100 {
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101 case CONST:
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102 op = XEXP (op, 0);
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103 if (GET_CODE (op) != PLUS
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104 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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105 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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106 return false;
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107 op = XEXP (op, 0);
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108 /* FALLTHRU */
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109
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110 case SYMBOL_REF:
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111 return SYMBOL_REF_SMALL_ADDR_P (op);
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112
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113 default:
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114 gcc_unreachable ();
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115 }
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116 })
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117
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118 ;; True if OP refers to a symbol with which we may use any offset.
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119 (define_predicate "any_offset_symbol_operand"
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120 (match_code "symbol_ref")
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121 {
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122 if (TARGET_NO_PIC || TARGET_AUTO_PIC)
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123 return true;
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124 if (SYMBOL_REF_SMALL_ADDR_P (op))
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125 return true;
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126 if (SYMBOL_REF_FUNCTION_P (op))
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127 return false;
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128 if (sdata_symbolic_operand (op, mode))
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129 return true;
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130 return false;
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131 })
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132
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133 ;; True if OP refers to a symbol with which we may use 14-bit aligned offsets.
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134 ;; False if OP refers to a symbol with which we may not use any offset at any
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135 ;; time.
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136 (define_predicate "aligned_offset_symbol_operand"
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137 (and (match_code "symbol_ref")
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138 (match_test "! SYMBOL_REF_FUNCTION_P (op)")))
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139
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140 ;; True if OP refers to a symbol, and is appropriate for a GOT load.
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141 (define_predicate "got_symbolic_operand"
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142 (match_operand 0 "symbolic_operand" "")
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143 {
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144 HOST_WIDE_INT addend = 0;
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145
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146 switch (GET_CODE (op))
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147 {
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148 case LABEL_REF:
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149 return true;
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150
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151 case CONST:
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152 /* Accept only (plus (symbol_ref) (const_int)). */
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153 op = XEXP (op, 0);
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154 if (GET_CODE (op) != PLUS
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155 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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156 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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157 return false;
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158
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159 addend = INTVAL (XEXP (op, 1));
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160 op = XEXP (op, 0);
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161 /* FALLTHRU */
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162
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163 case SYMBOL_REF:
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164 /* These symbols shouldn't be used with got loads. */
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165 if (SYMBOL_REF_SMALL_ADDR_P (op))
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166 return false;
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167 if (SYMBOL_REF_TLS_MODEL (op) != 0)
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168 return false;
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169
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170 if (any_offset_symbol_operand (op, mode))
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171 return true;
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172
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173 /* The low 14 bits of the constant have been forced to zero
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174 so that we do not use up so many GOT entries. Prevent cse
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175 from undoing this. */
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176 if (aligned_offset_symbol_operand (op, mode))
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177 return (addend & 0x3fff) == 0;
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178
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179 return addend == 0;
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180
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181 default:
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182 gcc_unreachable ();
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183 }
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184 })
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185
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186 ;; Return true if OP is a valid thread local storage symbolic operand.
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187 (define_predicate "tls_symbolic_operand"
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188 (match_code "symbol_ref,const")
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189 {
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190 switch (GET_CODE (op))
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191 {
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192 case SYMBOL_REF:
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193 return SYMBOL_REF_TLS_MODEL (op) != 0;
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194
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195 case CONST:
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196 op = XEXP (op, 0);
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197 if (GET_CODE (op) != PLUS
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198 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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199 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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200 return false;
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201
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202 /* We only allow certain offsets for certain tls models. */
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203 switch (SYMBOL_REF_TLS_MODEL (XEXP (op, 0)))
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204 {
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205 case TLS_MODEL_GLOBAL_DYNAMIC:
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206 case TLS_MODEL_LOCAL_DYNAMIC:
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207 return false;
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208
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209 case TLS_MODEL_INITIAL_EXEC:
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210 return (INTVAL (XEXP (op, 1)) & 0x3fff) == 0;
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211
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212 case TLS_MODEL_LOCAL_EXEC:
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213 return true;
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214
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215 default:
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216 return false;
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217 }
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218
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219 default:
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220 gcc_unreachable ();
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221 }
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222 })
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223
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224 ;; Return true if OP is a local-dynamic thread local storage symbolic operand.
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225 (define_predicate "ld_tls_symbolic_operand"
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226 (and (match_code "symbol_ref")
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227 (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC")))
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228
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229 ;; Return true if OP is an initial-exec thread local storage symbolic operand.
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230 (define_predicate "ie_tls_symbolic_operand"
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231 (match_code "symbol_ref,const")
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232 {
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233 switch (GET_CODE (op))
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234 {
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235 case CONST:
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236 op = XEXP (op, 0);
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237 if (GET_CODE (op) != PLUS
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238 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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239 || GET_CODE (XEXP (op, 1)) != CONST_INT
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240 || (INTVAL (XEXP (op, 1)) & 0x3fff) != 0)
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241 return false;
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242 op = XEXP (op, 0);
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243 /* FALLTHRU */
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244
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245 case SYMBOL_REF:
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246 return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC;
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247
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248 default:
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249 gcc_unreachable ();
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250 }
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251 })
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252
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253 ;; Return true if OP is a local-exec thread local storage symbolic operand.
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254 (define_predicate "le_tls_symbolic_operand"
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255 (match_code "symbol_ref,const")
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256 {
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257 switch (GET_CODE (op))
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258 {
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259 case CONST:
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260 op = XEXP (op, 0);
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261 if (GET_CODE (op) != PLUS
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262 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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263 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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264 return false;
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265 op = XEXP (op, 0);
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266 /* FALLTHRU */
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267
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268 case SYMBOL_REF:
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269 return SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC;
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270
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271 default:
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272 gcc_unreachable ();
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273 }
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274 })
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275
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276 ;; Like nonimmediate_operand, but don't allow MEMs that try to use a
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277 ;; POST_MODIFY with a REG as displacement.
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278 (define_predicate "destination_operand"
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279 (and (match_operand 0 "nonimmediate_operand")
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280 (match_test "GET_CODE (op) != MEM
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281 || GET_CODE (XEXP (op, 0)) != POST_MODIFY
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282 || GET_CODE (XEXP (XEXP (XEXP (op, 0), 1), 1)) != REG")))
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283
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284 ;; Like memory_operand, but don't allow post-increments.
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285 (define_predicate "not_postinc_memory_operand"
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286 (and (match_operand 0 "memory_operand")
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287 (match_test "GET_RTX_CLASS (GET_CODE (XEXP (op, 0))) != RTX_AUTOINC")))
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288
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289 ;; True if OP is a general operand, with some restrictions on symbols.
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290 (define_predicate "move_operand"
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291 (match_operand 0 "general_operand")
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292 {
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293 switch (GET_CODE (op))
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294 {
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295 case CONST:
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296 {
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297 HOST_WIDE_INT addend;
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298
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299 /* Accept only (plus (symbol_ref) (const_int)). */
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300 op = XEXP (op, 0);
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301 if (GET_CODE (op) != PLUS
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302 || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
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303 || GET_CODE (XEXP (op, 1)) != CONST_INT)
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304 return false;
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305
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306 addend = INTVAL (XEXP (op, 1));
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307 op = XEXP (op, 0);
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308
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309 /* After reload, we want to allow any offset whatsoever. This
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310 allows reload the opportunity to avoid spilling addresses to
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311 the stack, and instead simply substitute in the value from a
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312 REG_EQUIV. We'll split this up again when splitting the insn. */
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313 if (reload_in_progress || reload_completed)
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314 return true;
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315
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316 /* Some symbol types we allow to use with any offset. */
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317 if (any_offset_symbol_operand (op, mode))
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318 return true;
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319
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320 /* Some symbol types we allow offsets with the low 14 bits of the
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321 constant forced to zero so that we do not use up so many GOT
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322 entries. We want to prevent cse from undoing this. */
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323 if (aligned_offset_symbol_operand (op, mode))
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324 return (addend & 0x3fff) == 0;
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325
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326 /* The remaining symbol types may never be used with an offset. */
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327 return false;
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328 }
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329
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330 default:
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331 return true;
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332 }
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333 })
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334
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335 ;; True if OP is a register operand that is (or could be) a GR reg.
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336 (define_predicate "gr_register_operand"
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337 (match_operand 0 "register_operand")
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338 {
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339 unsigned int regno;
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340 if (GET_CODE (op) == SUBREG)
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341 op = SUBREG_REG (op);
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342
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343 regno = REGNO (op);
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344 return (regno >= FIRST_PSEUDO_REGISTER || GENERAL_REGNO_P (regno));
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345 })
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346
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347 ;; True if OP is a register operand that is (or could be) an FR reg.
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348 (define_predicate "fr_register_operand"
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349 (match_operand 0 "register_operand")
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350 {
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351 unsigned int regno;
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352 if (GET_CODE (op) == SUBREG)
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353 op = SUBREG_REG (op);
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354
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355 regno = REGNO (op);
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356 return (regno >= FIRST_PSEUDO_REGISTER || FR_REGNO_P (regno));
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357 })
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358
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359 ;; True if OP is a register operand that is (or could be) a GR/FR reg.
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360 (define_predicate "grfr_register_operand"
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361 (match_operand 0 "register_operand")
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362 {
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363 unsigned int regno;
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364 if (GET_CODE (op) == SUBREG)
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365 op = SUBREG_REG (op);
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366
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367 regno = REGNO (op);
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368 return (regno >= FIRST_PSEUDO_REGISTER
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369 || GENERAL_REGNO_P (regno)
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370 || FR_REGNO_P (regno));
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371 })
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372
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373 ;; True if OP is a nonimmediate operand that is (or could be) a GR reg.
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374 (define_predicate "gr_nonimmediate_operand"
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375 (match_operand 0 "nonimmediate_operand")
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376 {
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377 unsigned int regno;
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378
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379 if (GET_CODE (op) == MEM)
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380 return true;
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381 if (GET_CODE (op) == SUBREG)
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382 op = SUBREG_REG (op);
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383
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384 regno = REGNO (op);
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385 return (regno >= FIRST_PSEUDO_REGISTER || GENERAL_REGNO_P (regno));
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386 })
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387
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388 ;; True if OP is a nonimmediate operand that is (or could be) a FR reg.
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389 (define_predicate "fr_nonimmediate_operand"
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390 (match_operand 0 "nonimmediate_operand")
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391 {
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392 unsigned int regno;
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393
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394 if (GET_CODE (op) == MEM)
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395 return true;
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396 if (GET_CODE (op) == SUBREG)
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397 op = SUBREG_REG (op);
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398
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399 regno = REGNO (op);
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400 return (regno >= FIRST_PSEUDO_REGISTER || FR_REGNO_P (regno));
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401 })
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402
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403 ;; True if OP is a nonimmediate operand that is (or could be) a GR/FR reg.
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404 (define_predicate "grfr_nonimmediate_operand"
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405 (match_operand 0 "nonimmediate_operand")
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406 {
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407 unsigned int regno;
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408
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409 if (GET_CODE (op) == MEM)
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410 return true;
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411 if (GET_CODE (op) == SUBREG)
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412 op = SUBREG_REG (op);
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413
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414 regno = REGNO (op);
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415 return (regno >= FIRST_PSEUDO_REGISTER
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416 || GENERAL_REGNO_P (regno)
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417 || FR_REGNO_P (regno));
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418 })
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419
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420 ;; True if OP is a GR register operand, or zero.
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421 (define_predicate "gr_reg_or_0_operand"
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422 (ior (match_operand 0 "gr_register_operand")
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423 (and (match_code "const_int,const_double,const_vector")
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424 (match_test "op == CONST0_RTX (GET_MODE (op))"))))
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425
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426 ;; True if OP is a GR register operand, or a 5-bit immediate operand.
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427 (define_predicate "gr_reg_or_5bit_operand"
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428 (ior (match_operand 0 "gr_register_operand")
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429 (and (match_code "const_int")
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430 (match_test "INTVAL (op) >= 0 && INTVAL (op) < 32"))))
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431
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432 ;; True if OP is a GR register operand, or a 6-bit immediate operand.
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433 (define_predicate "gr_reg_or_6bit_operand"
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434 (ior (match_operand 0 "gr_register_operand")
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435 (and (match_code "const_int")
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436 (match_test "satisfies_constraint_M (op)"))))
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437
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438 ;; True if OP is a GR register operand, or an 8-bit immediate operand.
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439 (define_predicate "gr_reg_or_8bit_operand"
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440 (ior (match_operand 0 "gr_register_operand")
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441 (and (match_code "const_int")
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442 (match_test "satisfies_constraint_K (op)"))))
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443
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444 ;; True if OP is a GR/FR register operand, or an 8-bit immediate operand.
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445 (define_predicate "grfr_reg_or_8bit_operand"
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446 (ior (match_operand 0 "grfr_register_operand")
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447 (and (match_code "const_int")
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448 (match_test "satisfies_constraint_K (op)"))))
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449
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450 ;; True if OP is a register operand, or an 8-bit adjusted immediate operand.
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451 (define_predicate "gr_reg_or_8bit_adjusted_operand"
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452 (ior (match_operand 0 "gr_register_operand")
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453 (and (match_code "const_int")
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454 (match_test "satisfies_constraint_L (op)"))))
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455
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456 ;; True if OP is a register operand, or is valid for both an 8-bit
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457 ;; immediate and an 8-bit adjusted immediate operand. This is necessary
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458 ;; because when we emit a compare, we don't know what the condition will be,
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459 ;; so we need the union of the immediates accepted by GT and LT.
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460 (define_predicate "gr_reg_or_8bit_and_adjusted_operand"
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461 (ior (match_operand 0 "gr_register_operand")
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462 (and (match_code "const_int")
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463 (match_test "satisfies_constraint_K (op)
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464 && satisfies_constraint_L (op)"))))
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465
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466 ;; True if OP is a register operand, or a 14-bit immediate operand.
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467 (define_predicate "gr_reg_or_14bit_operand"
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468 (ior (match_operand 0 "gr_register_operand")
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469 (and (match_code "const_int")
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470 (match_test "satisfies_constraint_I (op)"))))
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471
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472 ;; True if OP is a register operand, or a 22-bit immediate operand.
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473 (define_predicate "gr_reg_or_22bit_operand"
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474 (ior (match_operand 0 "gr_register_operand")
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475 (and (match_code "const_int")
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476 (match_test "satisfies_constraint_J (op)"))))
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477
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478 ;; True if OP is a 7-bit immediate operand.
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479 (define_predicate "dshift_count_operand"
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480 (and (match_code "const_int")
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481 (match_test "INTVAL (op) >= 0 && INTVAL (op) < 128")))
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482
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483 ;; True if OP is a 6-bit immediate operand.
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484 (define_predicate "shift_count_operand"
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485 (and (match_code "const_int")
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486 (match_test "satisfies_constraint_M (op)")))
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487
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488 ;; True if OP-1 is a 6-bit immediate operand, used in extr instruction.
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489 (define_predicate "extr_len_operand"
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490 (and (match_code "const_int")
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491 (match_test "satisfies_constraint_M (GEN_INT (INTVAL (op) - 1))")))
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492
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|
493 ;; True if OP is a 5-bit immediate operand.
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|
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494 (define_predicate "shift_32bit_count_operand"
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495 (and (match_code "const_int")
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496 (match_test "INTVAL (op) >= 0 && INTVAL (op) < 32")))
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|
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497
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|
|
498 ;; True if OP is one of the immediate values 2, 4, 8, or 16.
|
|
|
499 (define_predicate "shladd_operand"
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500 (and (match_code "const_int")
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501 (match_test "INTVAL (op) == 2 || INTVAL (op) == 4 ||
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502 INTVAL (op) == 8 || INTVAL (op) == 16")))
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503
|
|
|
504 ;; True if OP is one of the immediate values 1, 2, 3, or 4.
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505 (define_predicate "shladd_log2_operand"
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|
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506 (and (match_code "const_int")
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507 (match_test "INTVAL (op) >= 1 && INTVAL (op) <= 4")))
|
|
|
508
|
|
|
509 ;; True if OP is one of the immediate values -16, -8, -4, -1, 1, 4, 8, 16.
|
|
|
510 (define_predicate "fetchadd_operand"
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|
|
511 (and (match_code "const_int")
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|
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512 (match_test "INTVAL (op) == -16 || INTVAL (op) == -8 ||
|
|
|
513 INTVAL (op) == -4 || INTVAL (op) == -1 ||
|
|
|
514 INTVAL (op) == 1 || INTVAL (op) == 4 ||
|
|
|
515 INTVAL (op) == 8 || INTVAL (op) == 16")))
|
|
|
516
|
|
|
517 ;; True if OP is 0..3.
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|
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518 (define_predicate "const_int_2bit_operand"
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|
|
519 (and (match_code "const_int")
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|
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520 (match_test "INTVAL (op) >= 0 && INTVAL (op) <= 3")))
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|
|
521
|
|
|
522 ;; True if OP is a floating-point constant zero, one, or a register.
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|
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523 (define_predicate "fr_reg_or_fp01_operand"
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|
|
524 (ior (match_operand 0 "fr_register_operand")
|
|
|
525 (and (match_code "const_double")
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|
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526 (match_test "satisfies_constraint_G (op)"))))
|
|
|
527
|
|
|
528 ;; Like fr_reg_or_fp01_operand, but don't allow any SUBREGs.
|
|
|
529 (define_predicate "xfreg_or_fp01_operand"
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|
|
530 (and (match_operand 0 "fr_reg_or_fp01_operand")
|
|
|
531 (not (match_code "subreg"))))
|
|
|
532
|
|
|
533 ;; True if OP is a constant zero, or a register.
|
|
|
534 (define_predicate "fr_reg_or_0_operand"
|
|
|
535 (ior (match_operand 0 "fr_register_operand")
|
|
|
536 (and (match_code "const_double,const_vector")
|
|
|
537 (match_test "op == CONST0_RTX (GET_MODE (op))"))))
|
|
|
538
|
|
|
539 ;; True if this is a comparison operator, which accepts a normal 8-bit
|
|
|
540 ;; signed immediate operand.
|
|
|
541 (define_predicate "normal_comparison_operator"
|
|
|
542 (match_code "eq,ne,gt,le,gtu,leu"))
|
|
|
543
|
|
|
544 ;; True if this is a comparison operator, which accepts an adjusted 8-bit
|
|
|
545 ;; signed immediate operand.
|
|
|
546 (define_predicate "adjusted_comparison_operator"
|
|
|
547 (match_code "lt,ge,ltu,geu"))
|
|
|
548
|
|
|
549 ;; True if this is a signed inequality operator.
|
|
|
550 (define_predicate "signed_inequality_operator"
|
|
|
551 (match_code "ge,gt,le,lt"))
|
|
|
552
|
|
|
553 ;; True if this operator is valid for predication.
|
|
|
554 (define_predicate "predicate_operator"
|
|
|
555 (match_code "eq,ne"))
|
|
|
556
|
|
|
557 ;; True if this operator can be used in a conditional operation.
|
|
|
558 (define_predicate "condop_operator"
|
|
|
559 (match_code "plus,minus,ior,xor,and"))
|
|
|
560
|
|
|
561 ;; These three are hardware registers that can only be addressed in
|
|
|
562 ;; DImode. It's not strictly necessary to test mode == DImode here,
|
|
|
563 ;; but it makes decent insurance against someone writing a
|
|
|
564 ;; match_operand wrong.
|
|
|
565
|
|
|
566 ;; True if this is the ar.lc register.
|
|
|
567 (define_predicate "ar_lc_reg_operand"
|
|
|
568 (and (match_code "reg")
|
|
|
569 (match_test "mode == DImode && REGNO (op) == AR_LC_REGNUM")))
|
|
|
570
|
|
|
571 ;; True if this is the ar.ccv register.
|
|
|
572 (define_predicate "ar_ccv_reg_operand"
|
|
|
573 (and (match_code "reg")
|
|
|
574 (match_test "mode == DImode && REGNO (op) == AR_CCV_REGNUM")))
|
|
|
575
|
|
|
576 ;; True if this is the ar.pfs register.
|
|
|
577 (define_predicate "ar_pfs_reg_operand"
|
|
|
578 (and (match_code "reg")
|
|
|
579 (match_test "mode == DImode && REGNO (op) == AR_PFS_REGNUM")))
|
|
|
580
|
|
|
581 ;; True if OP is valid as a base register in a reg + offset address.
|
|
|
582 ;; ??? Should I copy the flag_omit_frame_pointer and cse_not_expected
|
|
|
583 ;; checks from pa.c basereg_operand as well? Seems to be OK without them
|
|
|
584 ;; in test runs.
|
|
|
585 (define_predicate "basereg_operand"
|
|
|
586 (match_operand 0 "register_operand")
|
|
|
587 {
|
|
|
588 return REG_P (op) && REG_POINTER (op);
|
|
|
589 })
|
|
|
590
|
