gcc/config/mips/predicates.md

   1 ;; Predicate definitions for MIPS.
   2 ;; Copyright (C) 2004 Free Software Foundation, Inc.
   3 ;;
   4 ;; This file is part of GCC.
   5 ;;
   6 ;; GCC is free software; you can redistribute it and/or modify
   7 ;; it under the terms of the GNU General Public License as published by
   8 ;; the Free Software Foundation; either version 2, or (at your option)
   9 ;; any later version.
  10 ;;
  11 ;; GCC is distributed in the hope that it will be useful,
  12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ;; GNU General Public License for more details.
  15 ;;
  16 ;; You should have received a copy of the GNU General Public License
  17 ;; along with GCC; see the file COPYING.  If not, write to
  18 ;; the Free Software Foundation, 59 Temple Place - Suite 330,
  19 ;; Boston, MA 02111-1307, USA.
  20
  21 (define_predicate "const_uns_arith_operand"
  22   (and (match_code "const_int")
  23        (match_test "SMALL_OPERAND_UNSIGNED (INTVAL (op))")))
  24
  25 (define_predicate "uns_arith_operand"
  26   (ior (match_operand 0 "const_uns_arith_operand")
  27        (match_operand 0 "register_operand")))
  28
  29 (define_predicate "const_arith_operand"
  30   (and (match_code "const_int")
  31        (match_test "SMALL_OPERAND (INTVAL (op))")))
  32
  33 (define_predicate "arith_operand"
  34   (ior (match_operand 0 "const_arith_operand")
  35        (match_operand 0 "register_operand")))
  36
  37 (define_predicate "sle_operand"
  38   (and (match_code "const_int")
  39        (match_test "SMALL_OPERAND (INTVAL (op) + 1)")))
  40
  41 (define_predicate "sleu_operand"
  42   (and (match_operand 0 "sle_operand")
  43        (match_test "INTVAL (op) + 1 != 0")))
  44
  45 (define_predicate "const_0_operand"
  46   (and (match_code "const_int,const_double")
  47        (match_test "op == CONST0_RTX (GET_MODE (op))")))
  48
  49 (define_predicate "reg_or_0_operand"
  50   (ior (and (match_operand 0 "const_0_operand")
  51             (match_test "!TARGET_MIPS16"))
  52        (match_operand 0 "register_operand")))
  53
  54 (define_predicate "const_1_operand"
  55   (and (match_code "const_int,const_double")
  56        (match_test "op == CONST1_RTX (GET_MODE (op))")))
  57
  58 (define_predicate "reg_or_1_operand"
  59   (ior (match_operand 0 "const_1_operand")
  60        (match_operand 0 "register_operand")))
  61
  62 (define_predicate "fpr_operand"
  63   (and (match_code "reg")
  64        (match_test "FP_REG_P (REGNO (op))")))
  65
  66 (define_predicate "hilo_operand"
  67   (and (match_code "reg")
  68        (match_test "MD_REG_P (REGNO (op))")))
  69
  70 (define_predicate "lo_operand"
  71   (and (match_code "reg")
  72        (match_test "REGNO (op) == LO_REGNUM")))
  73
  74 (define_predicate "fcc_reload_operand"
  75   (and (match_code "reg,subreg")
  76        (match_test "ST_REG_P (true_regnum (op))")))
  77
  78 (define_special_predicate "pc_or_label_operand"
  79   (match_code "pc,label_ref"))
  80
  81 (define_predicate "const_call_insn_operand"
  82   (match_code "const,symbol_ref,label_ref")
  83 {
  84   enum mips_symbol_type symbol_type;
  85
  86   if (!mips_symbolic_constant_p (op, &symbol_type))
  87     return false;
  88
  89   switch (symbol_type)
  90     {
  91     case SYMBOL_GENERAL:
  92       /* If -mlong-calls, force all calls to use register addressing.  */
  93       return !TARGET_LONG_CALLS;
  94
  95     case SYMBOL_GOT_GLOBAL:
  96       /* Without explicit relocs, there is no special syntax for
  97          loading the address of a call destination into a register.
  98          Using "la $25,foo; jal $25" would prevent the lazy binding
  99          of "foo", so keep the address of global symbols with the
 100          jal macro.  */
 101       return !TARGET_EXPLICIT_RELOCS;
 102
 103     default:
 104       return false;
 105     }
 106 })
 107
 108 (define_predicate "call_insn_operand"
 109   (ior (match_operand 0 "const_call_insn_operand")
 110        (match_operand 0 "register_operand")))
 111
 112 (define_predicate "move_operand"
 113   (match_operand 0 "general_operand")
 114 {
 115   switch (GET_CODE (op))
 116     {
 117     case CONST_INT:
 118       /* When generating mips16 code, LEGITIMATE_CONSTANT_P rejects
 119          CONST_INTs that can't be loaded using simple insns.  */
 120       if (TARGET_MIPS16)
 121         return true;
 122
 123       /* When generating 32-bit code, allow DImode move_operands to
 124          match arbitrary constants.  We split them after reload.  */
 125       if (!TARGET_64BIT && mode == DImode)
 126         return true;
 127
 128       /* Otherwise check whether the constant can be loaded in a single
 129          instruction.  */
 130       return LUI_INT (op) || SMALL_INT (op) || SMALL_INT_UNSIGNED (op);
 131
 132     case CONST:
 133     case SYMBOL_REF:
 134     case LABEL_REF:
 135       return CONST_GP_P (op) || mips_atomic_symbolic_constant_p (op);
 136
 137     default:
 138       return true;
 139     }
 140 })
 141
 142 (define_predicate "consttable_operand"
 143   (match_test "CONSTANT_P (op)"))
 144
 145 (define_predicate "symbolic_operand"
 146   (match_code "const,symbol_ref,label_ref")
 147 {
 148   enum mips_symbol_type type;
 149   return mips_symbolic_constant_p (op, &type);
 150 })
 151
 152 (define_predicate "general_symbolic_operand"
 153   (match_code "const,symbol_ref,label_ref")
 154 {
 155   enum mips_symbol_type type;
 156   return mips_symbolic_constant_p (op, &type) && type == SYMBOL_GENERAL;
 157 })
 158
 159 (define_predicate "global_got_operand"
 160   (match_code "const,symbol_ref,label_ref")
 161 {
 162   enum mips_symbol_type type;
 163   return mips_symbolic_constant_p (op, &type) && type == SYMBOL_GOT_GLOBAL;
 164 })
 165
 166 (define_predicate "local_got_operand"
 167   (match_code "const,symbol_ref,label_ref")
 168 {
 169   enum mips_symbol_type type;
 170   return mips_symbolic_constant_p (op, &type) && type == SYMBOL_GOT_LOCAL;
 171 })
 172
 173 (define_predicate "stack_operand"
 174   (and (match_code "mem")
 175        (match_test "mips_stack_address_p (XEXP (op, 0), GET_MODE (op))")))
 176
 177 (define_predicate "macc_msac_operand"
 178   (ior (and (match_code "plus") (match_test "ISA_HAS_MACC"))
 179        (and (match_code "minus") (match_test "ISA_HAS_MSAC")))
 180 {
 181   rtx mult = XEXP (op, GET_CODE (op) == PLUS ? 0 : 1);
 182   rtx accum = XEXP (op, GET_CODE (op) == PLUS ? 1 : 0);
 183   return (GET_CODE (mult) == MULT
 184           && REG_P (XEXP (mult, 0))
 185           && REG_P (XEXP (mult, 1))
 186           && REG_P (accum));
 187 })
 188
 189
 190 (define_predicate "equality_operator"
 191   (match_code "eq,ne"))
 192
 193 (define_predicate "extend_operator"
 194   (match_code "zero_extend,sign_extend"))
 195
 196 (define_predicate "trap_comparison_operator"
 197   (match_code "eq,ne,lt,ltu,ge,geu"))
 198
 199
 200 (define_predicate "small_data_pattern"
 201   (and (match_code "set,parallel,unspec,unspec_volatile")
 202        (match_test "mips_small_data_pattern_p (op)")))