gcc/config/visium/predicates.md

   1 ;; Predicate definitions for Visium.
   2 ;; Copyright (C) 2005-2021 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 3, 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 COPYING3.  If not see
  18 ;; <http://www.gnu.org/licenses/>.
  19
  20 ;; Return true if OP is the constant 0.
  21 (define_predicate "const0_operand"
  22   (and (match_code "const_int,const_double")
  23        (match_test "op == CONST0_RTX (mode)")))
  24
  25 ;; Return true if OP is a constant in the range 1 .. 31.
  26 (define_predicate "const_shift_operand"
  27   (and (match_code "const_int")
  28        (match_test "IN_RANGE (INTVAL (op), 1, 31)")))
  29
  30 ;; Return true if OP is either a register or the constant 0.
  31 (define_predicate "reg_or_0_operand"
  32   (ior (match_operand 0 "register_operand")
  33        (match_operand 0 "const0_operand")))
  34
  35 ;; Return true if OP is either a register or a constant in the range 1 .. 31.
  36 (define_predicate "reg_or_shift_operand"
  37   (ior (match_operand 0 "register_operand")
  38        (match_operand 0 "const_shift_operand")))
  39
  40 ;; Return true if OP is either a register or the constant 32.
  41 (define_predicate "reg_or_32_operand"
  42   (ior (match_operand 0 "register_operand")
  43        (and (match_code "const_int")
  44             (match_test "INTVAL (op) == 32"))))
  45
  46 ;; Return true if OP is a general register.
  47 (define_predicate "gpc_reg_operand"
  48   (match_operand 0 "register_operand")
  49 {
  50   if (GET_CODE (op) == SUBREG)
  51     {
  52       op = SUBREG_REG (op);
  53       if (GET_CODE (op) != REG)
  54         return 1;
  55     }
  56
  57   unsigned int regno = REGNO (op);
  58   return (regno >= FIRST_PSEUDO_REGISTER
  59           || TEST_HARD_REG_BIT (reg_class_contents[GENERAL_REGS], regno));
  60 })
  61
  62 ;; Return true if OP is the MDB register.
  63 (define_predicate "mdb_reg_operand"
  64   (match_operand 0 "register_operand")
  65 {
  66   unsigned int regno = reg_or_subreg_regno (op);
  67   return (regno == MDB_REGNUM);
  68 })
  69
  70 ;; Return true if OP is the MDC register.
  71 (define_predicate "mdc_reg_operand"
  72   (match_operand 0 "register_operand")
  73 {
  74   unsigned int regno = reg_or_subreg_regno (op);
  75   return (regno == MDC_REGNUM);
  76 })
  77
  78 ;; Return true if OP is an rvalue which is not an EAM register.
  79 (define_predicate "non_eam_src_operand"
  80   (match_operand 0 "general_operand")
  81 {
  82   unsigned int regno = reg_or_subreg_regno (op);
  83   return (regno != MDB_REGNUM && regno != MDC_REGNUM);
  84 })
  85
  86 ;; Return true if OP is an lvalue which is not an EAM register.
  87 (define_predicate "non_eam_dst_operand"
  88   (match_operand 0 "nonimmediate_operand")
  89 {
  90   unsigned int regno = reg_or_subreg_regno (op);
  91   return (regno != MDB_REGNUM && regno != MDC_REGNUM);
  92 })
  93
  94 ;; Return true if OP is a floating-point register.
  95 (define_predicate "fp_reg_operand"
  96   (match_code "reg")
  97 {
  98   unsigned int regno = REGNO (op);
  99   return (regno >= FIRST_PSEUDO_REGISTER || FP_REGISTER_P (regno));
 100 })
 101
 102 ;; Return true if OP is a floating-point register or the constant 0.
 103 (define_predicate "fp_reg_or_0_operand"
 104   (ior (match_operand 0 "fp_reg_operand")
 105        (match_operand 0 "const0_operand")))
 106
 107 ;; Return true if OP can be used as the second operand in a 32-bit or 64-bit
 108 ;; add or subtract instruction.  Note that adding a negative constant may be
 109 ;; transformed into subtracting a positive constant, and vice versa.
 110 (define_predicate "add_operand"
 111   (ior (match_operand 0 "gpc_reg_operand")
 112        (and (match_code "const_int")
 113             (match_test ("INTVAL (op) >= -65535 && INTVAL (op) <= 65535")))))
 114
 115 ;; Return true if OP can be used as the second operand in a 32-bit or 64-bit
 116 ;; add or subtract instruction directly, i.e. without the reverse trick.
 117 (define_predicate "real_add_operand"
 118   (ior (match_operand 0 "gpc_reg_operand")
 119        (and (match_code "const_int")
 120             (match_test ("INTVAL (op) >= 0 && INTVAL (op) <= 65535")))))
 121
 122 ;; Return true if OP is (or could be) outside the range 0 .. 65535, which is
 123 ;; the range of the immediate operands, but accept -1 for NOT.
 124 (define_predicate "large_immediate_operand"
 125   (ior (match_code "const,label_ref,symbol_ref")
 126        (and (match_code "const_int")
 127             (match_test ("INTVAL (op) < -1 || INTVAL (op) > 65535")))))
 128
 129 ;; Return true if OP is an equality comparison operator.
 130 (define_predicate "visium_equality_comparison_operator"
 131   (match_code "eq,ne"))
 132
 133 ;; Return true if OP is a valid comparison operator for CCNZmode.
 134 (define_predicate "visium_nz_comparison_operator"
 135   (match_code "eq,ne,lt,ge"))
 136
 137 ;; Return true if OP is a valid comparison operator for CCCmode.
 138 (define_predicate "visium_c_comparison_operator"
 139   (match_code "eq,ne,ltu,geu"))
 140
 141 ;; Return true if OP is a valid comparison operator for CCVmode.
 142 (define_predicate "visium_v_comparison_operator"
 143   (match_code "eq,ne"))
 144
 145 ;; Return true if OP is a valid FP comparison operator.
 146 (define_predicate "visium_fp_comparison_operator"
 147   (match_code "eq,ne,ordered,unordered,unlt,unle,ungt,unge,lt,le,gt,ge"))
 148
 149 ;; Return true if OP is a valid comparison operator for a branch.  This allows
 150 ;; the use of MATCH_OPERATOR to recognize all the branch insns.
 151 (define_predicate "visium_branch_operator"
 152   (match_operand 0 "comparison_operator")
 153 {
 154   switch (GET_MODE (XEXP (op, 0)))
 155     {
 156     case E_CCmode:
 157       return ordered_comparison_operator (op, mode);
 158     case E_CCNZmode:
 159       return visium_nz_comparison_operator (op, mode);
 160     case E_CCCmode:
 161       return visium_c_comparison_operator (op, mode);
 162     case E_CCVmode:
 163       return visium_v_comparison_operator (op, mode);
 164     case E_CCFPmode:
 165     case E_CCFPEmode:
 166       return visium_fp_comparison_operator (op, mode);
 167     default:
 168       return false;
 169     }
 170 })
 171
 172 ;; Return true if OP is a valid comparison operator for an integer cstore.
 173 (define_predicate "visium_int_cstore_operator"
 174   (match_code "eq,ne,ltu,gtu,leu,geu"))
 175
 176 ;; Return true if OP is a valid comparison operator for an FP cstore.
 177 (define_predicate "visium_fp_cstore_operator"
 178   (match_code "lt,gt,unge,unle"))