gcc/config/tilegx/predicates.md

   1 ;; Predicate definitions for Tilera TILE-Gx.
   2 ;; Copyright (C) 2011, 2012
   3 ;; Free Software Foundation, Inc.
   4 ;; Contributed by Walter Lee (walt@tilera.com)
   5 ;;
   6 ;; This file is part of GCC.
   7 ;;
   8 ;; GCC is free software; you can redistribute it and/or modify it
   9 ;; under the terms of the GNU General Public License as published
  10 ;; by the Free Software Foundation; either version 3, or (at your
  11 ;; option) any later version.
  12 ;;
  13 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
  14 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15 ;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  16 ;; License for more details.
  17 ;;
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GCC; see the file COPYING3.  If not see
  20 ;; <http://www.gnu.org/licenses/>.
  21
  22 ;; Return true if OP is the zero constant for MODE.
  23 (define_predicate "const_zero_operand"
  24   (and (match_code "const_int,const_double,const_vector")
  25        (match_test "op == CONST0_RTX (mode)")))
  26
  27 ;; Returns true if OP is either the constant zero or a register.
  28 (define_predicate "reg_or_0_operand"
  29   (and (ior (match_operand 0 "register_operand")
  30             (match_operand 0 "const_zero_operand"))
  31        (match_test "GET_MODE_SIZE (mode) <= UNITS_PER_WORD")))
  32
  33 ; Return 1 if OP is a valid Pmode pointer.
  34 (define_predicate "pointer_operand"
  35   (and (match_operand 0 "address_operand")
  36        (ior (match_operand 0 "pmode_register_operand")
  37             (match_operand 0 "const_zero_operand"))))
  38
  39 ; Return 1 if OP is a network register identifier.
  40 (define_predicate "netreg_operand"
  41   (and (match_code "const_int")
  42        (match_test "IN_RANGE (INTVAL (op), 0, 5)")))
  43
  44 ; Return 1 if OP is an unsigned 6-bit constant.
  45 (define_predicate "u6bit_cint_operand"
  46   (and (match_code "const_int")
  47        (match_test "INTVAL (op) == (INTVAL (op) & 0x3F)")))
  48
  49 ;; Return 1 if OP is an unsigned 16-bit constant.
  50 (define_predicate "u16bit_cint_operand"
  51   (and (match_code "const_int")
  52        (match_test "(unsigned HOST_WIDE_INT)INTVAL (op) < (1U << 16)")))
  53
  54 ;; Return 1 if OP is a signed 8-bit constant.
  55 (define_predicate "s8bit_cint_operand"
  56   (and (match_code "const_int")
  57        (match_test "satisfies_constraint_I (op)")))
  58
  59 ;; Return 1 if OP is a signed 16-bit constant.
  60 (define_predicate "s16bit_cint_operand"
  61   (and (match_code "const_int")
  62        (match_test "satisfies_constraint_J (op)")))
  63
  64 ;; Return 1 if OP is an unsigned 14-bit constant.
  65 (define_predicate "u14bit_cint_operand"
  66   (and (match_code "const_int")
  67        (match_test "(unsigned HOST_WIDE_INT)INTVAL (op) < (1U << 14)")))
  68
  69 ;; Return 1 if OP is a constant or any register.
  70 (define_predicate "reg_or_cint_operand"
  71   (ior (match_operand 0 "register_operand")
  72        (match_operand 0 "const_int_operand")))
  73
  74 ;; Returns 1 if OP is a "last" unspec wrapper for a symbol, got, or
  75 ;; tls reference.
  76 (define_predicate "const_last_symbolic_operand"
  77   (and (match_code "const")
  78        (match_test "GET_CODE (XEXP (op,0)) == UNSPEC")
  79        (ior (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_LAST")
  80             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST")
  81             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW2_LAST")
  82             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST_PCREL")
  83             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_LAST_GOT")
  84             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST_GOT")
  85             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST_TLS_GD")
  86             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST_TLS_IE")
  87             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1_LAST_TLS_LE"))))
  88
  89 ;; Returns 1 if OP is an unspec wrapper for a symbol, got, or tls
  90 ;; reference.
  91 (define_predicate "const_symbolic_operand"
  92   (and (match_code "const")
  93        (match_test "GET_CODE (XEXP (op,0)) == UNSPEC")
  94        (ior (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0")
  95             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW1")
  96             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW2")
  97             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW3")
  98             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_PCREL")
  99             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_GOT")
 100             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_TLS_GD")
 101             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_TLS_IE")
 102             (match_test "XINT (XEXP (op,0), 1) == UNSPEC_HW0_TLS_LE"))))
 103
 104 ;; Return 1 if OP is a 8-element vector constant with identical signed
 105 ;; 8-bit elements or any register.
 106 (define_predicate "reg_or_v8s8bit_operand"
 107   (ior (match_operand 0 "register_operand")
 108        (and (match_code "const_vector")
 109             (match_test "CONST_VECTOR_NUNITS (op) == 8
 110                          && satisfies_constraint_I (CONST_VECTOR_ELT (op, 0))
 111                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 1)
 112                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 2)
 113                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 3)
 114                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 4)
 115                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 5)
 116                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 6)
 117                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 7)"))))
 118
 119 ;; Return 1 if OP is a 4-element vector constant with identical signed
 120 ;; 8-bit elements or any register.
 121 (define_predicate "reg_or_v4s8bit_operand"
 122   (ior (match_operand 0 "register_operand")
 123        (and (match_code "const_vector")
 124             (match_test "CONST_VECTOR_NUNITS (op) == 4
 125                          && satisfies_constraint_I (CONST_VECTOR_ELT (op, 0))
 126                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 1)
 127                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 2)
 128                          && CONST_VECTOR_ELT (op, 0) == CONST_VECTOR_ELT (op, 3)"))))
 129
 130 ;; Return 1 if the operand is a valid second operand to an add insn.
 131 (define_predicate "add_operand"
 132   (if_then_else (match_code "const_int")
 133     (match_test "satisfies_constraint_J (op)")
 134     (ior (match_operand 0 "register_operand")
 135          (match_operand 0 "const_last_symbolic_operand"))))
 136
 137 ;; Return 1 if the operand is a register or signed 8-bit immediate operand.
 138 (define_predicate "reg_or_s8bit_operand"
 139   (if_then_else (match_code "const_int")
 140     (match_test "satisfies_constraint_I (op)")
 141     (match_operand 0 "register_operand")))
 142
 143 ;; Return 1 if the operand is a register or unsigned 5-bit immediate operand.
 144 (define_predicate "reg_or_u5bit_operand"
 145   (if_then_else (match_code "const_int")
 146     (match_test "INTVAL (op) == (INTVAL (op) & 0x1F)")
 147     (match_operand 0 "register_operand")))
 148
 149 ;; Return 1 if the operand is a register or unsigned 6-bit immediate operand.
 150 (define_predicate "reg_or_u6bit_operand"
 151   (if_then_else (match_code "const_int")
 152     (match_test "INTVAL (op) == (INTVAL (op) & 0x3F)")
 153     (match_operand 0 "register_operand")))
 154
 155 ;; Return 1 for an operand suitable for ANDing with a register.
 156 (define_predicate "and_operand"
 157   (if_then_else (match_code "const_int")
 158     (match_test "satisfies_constraint_I (op) || satisfies_constraint_M (op)")
 159     (match_operand 0 "register_operand")))
 160
 161 ; Return 1 if the operand is 2, 4 or 8.
 162 (define_predicate "cint_248_operand"
 163   (and (match_code "const_int")
 164        (match_test
 165         "INTVAL (op) == 2 || INTVAL (op) == 4 || INTVAL (op) == 8")))
 166
 167 ;; Return true if OP is a TLS symbolic operand.
 168 (define_predicate "tls_symbolic_operand"
 169   (and (match_code "symbol_ref")
 170        (match_test "SYMBOL_REF_TLS_MODEL (op) !=  TLS_MODEL_NONE")))
 171
 172 ;; Return true if OP is a symbolic operand for the TLS Global Dynamic model.
 173 (define_predicate "tls_gd_symbolic_operand"
 174   (and (match_code "symbol_ref")
 175        (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_GLOBAL_DYNAMIC")))
 176
 177 ;; Return true if OP is a symbolic operand for the TLS Local Dynamic model.
 178 (define_predicate "tls_ld_symbolic_operand"
 179   (and (match_code "symbol_ref")
 180        (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_DYNAMIC")))
 181
 182 ;; Return true if OP is a symbolic operand that can be used for the
 183 ;; TLS Initial Exec model.
 184 (define_predicate "tls_ie_symbolic_operand"
 185   (and (match_code "symbol_ref")
 186        (ior (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_INITIAL_EXEC")
 187             (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC"))))
 188
 189 ;; Return true if OP is a symbolic operand for the TLS Local Exec model.
 190 (define_predicate "tls_le_symbolic_operand"
 191   (and (match_code "symbol_ref")
 192        (match_test "SYMBOL_REF_TLS_MODEL (op) == TLS_MODEL_LOCAL_EXEC")))
 193
 194 ;; Returns true if OP is any general operand except for an
 195 ;; auto-incrementing address operand.
 196 (define_predicate "nonautoinc_operand"
 197   (and (match_operand 0 "general_operand")
 198        (not (ior (match_code "pre_dec") (match_code "pre_inc")
 199                  (match_code "post_dec") (match_code "post_inc")
 200                  (match_code "post_modify") (match_code "pre_modify")))))
 201
 202 ;; Returns true if OP is a non-auto-incrementing memory operand.
 203 (define_predicate "nonautoincmem_operand"
 204   (match_operand 0 "memory_operand")
 205 {
 206   return nonautoinc_operand (XEXP (op, 0), GET_MODE (XEXP (op, 0)));
 207 })
 208
 209 ;; Returns true if OP is a non-auto-incrementing memory, general
 210 ;; operand.
 211 (define_predicate "nonautoincmem_general_operand"
 212   (match_operand 0 "general_operand")
 213 {
 214   if (memory_operand (op, mode))
 215     return nonautoinc_operand (XEXP (op, 0), GET_MODE (XEXP (op, 0)));
 216   else
 217     return true;
 218 })
 219
 220 ;; Returns true if OP is a non-auto-incrementing memory, non-immediate
 221 ;; operand.
 222 (define_predicate "nonautoincmem_nonimmediate_operand"
 223   (match_operand 0 "nonimmediate_operand")
 224 {
 225   if (memory_operand (op, mode))
 226     return nonautoinc_operand (XEXP (op, 0), GET_MODE (XEXP (op, 0)));
 227   else
 228     return true;
 229 })
 230
 231 ;; Return true if OP is a valid operand for the source of a move insn.
 232 (define_predicate "move_operand"
 233   (match_operand 0 "general_operand")
 234 {
 235   /* If both modes are non-void they must be the same.  */
 236   if (mode != VOIDmode && GET_MODE (op) != VOIDmode && mode != GET_MODE (op))
 237     return false;
 238
 239   switch (GET_CODE (op))
 240     {
 241     case CONST_INT:
 242       return (satisfies_constraint_J (op)
 243               || satisfies_constraint_K (op)
 244               || (mode == DImode &&
 245                   (satisfies_constraint_N (op)
 246                    || satisfies_constraint_P (op))));
 247
 248     case MEM:
 249       return memory_address_p (mode, XEXP (op, 0));
 250
 251     case CONST:
 252       return const_last_symbolic_operand (op, mode);
 253
 254     default:
 255       return register_operand (op, mode);
 256     }
 257 })
 258
 259 ;; Returns 1 if OP is a symbolic operand, i.e. a symbol_ref or a label_ref,
 260 ;; possibly with an offset.
 261 (define_predicate "symbolic_operand"
 262   (ior (match_code "symbol_ref,label_ref")
 263        (and (match_code "const")
 264             (match_test "GET_CODE (XEXP (op,0)) == PLUS
 265                          && (GET_CODE (XEXP (XEXP (op,0), 0)) == SYMBOL_REF
 266                              || GET_CODE (XEXP (XEXP (op,0), 0)) == LABEL_REF)
 267                          && CONST_INT_P (XEXP (XEXP (op,0), 1))"))))
 268
 269 ;; Return 1 for an unsigned 16 bit or a const symbolc operand.
 270 (define_predicate "u16bit_or_const_symbolic_operand"
 271   (ior (match_operand 0 "u16bit_cint_operand")
 272        (match_operand 0 "const_symbolic_operand")))
 273
 274 ;; Return true if OP is an address suitable for a call insn.
 275 ;; Call insn on TILE can take a PC-relative constant address
 276 ;; or any regular memory address.
 277 (define_predicate "call_address_operand"
 278   (ior (match_operand 0 "symbolic_operand")
 279        (match_test "memory_address_p (Pmode, op)")))
 280
 281 ;; Return true if OP is an operand suitable for a call insn.
 282 (define_predicate "call_operand"
 283   (and (match_code "mem")
 284        (match_test "call_address_operand (XEXP (op, 0), mode)")))
 285
 286 ;; Return 1 if OP is a signed comparison operation.
 287 ;; We can use these directly in compares against zero.
 288 (define_predicate "signed_comparison_operator"
 289   (match_code "eq,ne,le,lt,ge,gt"))
 290
 291 ;; Return 1 if OP is a equal or not-equal operation.
 292 (define_predicate "eqne_operator"
 293   (match_code "eq,ne"))