gcc/config/cris/predicates.md

   1 ;; Operand and operator predicates for the GCC CRIS port.
   2 ;; Copyright (C) 2005 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, 51 Franklin Street, Fifth Floor,
  19 ;; Boston, MA 02110-1301, USA.
  20
  21
  22 ;; Operator predicates.
  23
  24 (define_predicate "cris_orthogonal_operator"
  25   (match_code "plus, minus, ior, and, umin"))
  26
  27 (define_predicate "cris_commutative_orth_op"
  28   (match_code "plus, ior, and, umin"))
  29
  30 ;; By the name, you might think we should include MULT.  We don't because
  31 ;; it doesn't accept the same addressing modes as the others (only
  32 ;; registers) and there's also the problem of handling TARGET_MUL_BUG.
  33
  34 (define_predicate "cris_operand_extend_operator"
  35   (match_code "plus, minus, umin"))
  36
  37 (define_predicate "cris_additive_operand_extend_operator"
  38   (match_code "plus, minus"))
  39
  40 (define_predicate "cris_extend_operator"
  41   (match_code "zero_extend, sign_extend"))
  42
  43 (define_predicate "cris_plus_or_bound_operator"
  44   (match_code "plus, umin"))
  45
  46 ;; Used as an operator to get a handle on a already-known-valid MEM rtx:es
  47 ;; (no need to validate the address), where some address expression parts
  48 ;; have their own match_operand.
  49
  50 (define_predicate "cris_mem_op"
  51   (match_code "mem"))
  52
  53 (define_predicate "cris_load_multiple_op"
  54   (and (match_code "parallel")
  55        (match_test "cris_movem_load_rest_p (op, 0)")))
  56
  57 (define_predicate "cris_store_multiple_op"
  58   (and (match_code "parallel")
  59        (match_test "cris_store_multiple_op_p (op)")))
  60
  61
  62 ;; Operand helper predicates.
  63
  64 (define_predicate "cris_bdap_const_operand"
  65   (and (match_code "label_ref, symbol_ref, const_int, const_double, const")
  66        (not (and (match_test "flag_pic")
  67                  (match_test "cris_symbol (op)")))))
  68
  69 (define_predicate "cris_simple_address_operand"
  70   (ior (match_operand:SI 0 "register_operand")
  71        (and (match_code "post_inc")
  72             (match_test "register_operand (XEXP (op, 0), Pmode)"))))
  73
  74 (define_predicate "cris_simple_operand"
  75   (ior (match_operand 0 "register_operand")
  76        (and (match_code "mem")
  77             (match_test "cris_simple_address_operand (XEXP (op, 0),
  78                                                       Pmode)"))))
  79
  80 ;; The caller needs to use :SI.
  81 (define_predicate "cris_bdap_sign_extend_operand"
  82   (and (match_code "sign_extend")
  83        (and (match_test "MEM_P (XEXP (op, 0))")
  84             (match_test "cris_simple_address_operand (XEXP (XEXP (op, 0), 0),
  85                                                       Pmode)"))))
  86
  87 ;; FIXME: Should not have to test for 1.
  88 (define_predicate "cris_scale_int_operand"
  89   (and (match_code "const_int")
  90        (ior (ior (match_test "op == GEN_INT (4)")
  91                  (match_test "op == const2_rtx"))
  92             (match_test "op == const1_rtx"))))
  93
  94 ;; FIXME: Should be able to assume (reg int).
  95 (define_predicate "cris_biap_mult_operand"
  96   (and (match_code "mult")
  97        (ior (and (match_test "register_operand (XEXP (op, 0), Pmode)")
  98                  (match_test "cris_scale_int_operand (XEXP (op, 1), Pmode)"))
  99             (and (match_test "cris_scale_int_operand (XEXP (op, 0), Pmode)")
 100                  (match_test "register_operand (XEXP (op, 1), Pmode)")))))
 101
 102
 103 ;; Operand predicates.
 104
 105 ;; This checks a part of an address, the one that is not a plain register
 106 ;; for an addressing mode using BDAP.
 107 ;; Allowed operands are either:
 108 ;; a) a register
 109 ;; b) a CONST operand (but not a symbol when generating PIC)
 110 ;; c) a [r] or [r+] in SImode, or sign-extend from HI or QI.
 111
 112 (define_predicate "cris_bdap_operand"
 113   (ior (match_operand 0 "cris_bdap_const_operand")
 114        (ior (match_operand:SI 0 "cris_simple_operand")
 115             (match_operand:SI 0 "cris_bdap_sign_extend_operand"))))
 116
 117 ;; This is similar to cris_bdap_operand:
 118 ;; It checks a part of an address, the one that is not a plain register
 119 ;; for an addressing mode using BDAP or BIAP.
 120 ;; Allowed operands are either:
 121 ;; a) a register
 122 ;; b) a CONST operand (but not a symbol when generating PIC)
 123 ;; c) a mult of (1, 2 or 4) and a register
 124 ;; d) a [r] or [r+] in SImode, or sign-extend from HI or QI.  */
 125
 126 (define_predicate "cris_bdap_biap_operand"
 127   (ior (match_operand 0 "cris_bdap_operand")
 128        (match_operand 0 "cris_biap_mult_operand")))
 129
 130 ;; Since a PIC symbol without a GOT entry is not a general_operand, we
 131 ;; have to have a predicate that matches it.  We use this in the expanded
 132 ;; "movsi" anonymous pattern.
 133 ;; FIXME: Can s/special_// when PR 20413 is fixed.
 134
 135 (define_special_predicate "cris_general_operand_or_gotless_symbol"
 136   (ior (match_operand 0 "general_operand")
 137        (and (match_code "const, symbol_ref, label_ref, unspec")
 138             (match_test "cris_gotless_symbol (op)"))))
 139
 140 ;; Since with -fPIC, not all symbols are valid PIC symbols or indeed
 141 ;; general_operands, we have to have a predicate that matches it for the
 142 ;; "movsi" expander.
 143 ;; FIXME: Can s/special_// when PR 20413 is fixed.
 144
 145 (define_special_predicate "cris_general_operand_or_symbol"
 146   (ior (match_operand 0 "general_operand")
 147        (and (match_code "const, symbol_ref, label_ref")
 148             (match_test "cris_symbol (op)"))))
 149
 150 ;; Since a PLT symbol is not a general_operand, we have to have a
 151 ;; predicate that matches it when we need it.  We use this in the expanded
 152 ;; "call" and "call_value" anonymous patterns.
 153
 154 (define_predicate "cris_general_operand_or_plt_symbol"
 155   (ior (match_operand 0 "general_operand")
 156        (and (match_code "const")
 157             (and (match_test "GET_CODE (XEXP (op, 0)) == UNSPEC")
 158                  (not (match_test "TARGET_AVOID_GOTPLT"))))))
 159
 160 ;; This matches a (MEM (general_operand)) or
 161 ;; (MEM (cris_general_operand_or_symbol)).  The second one isn't a valid
 162 ;; memory_operand, so we need this predicate to recognize call
 163 ;; destinations before we change them to a PLT operand (by wrapping in
 164 ;; UNSPEC CRIS_UNSPEC_PLT).
 165
 166 (define_predicate "cris_mem_call_operand"
 167   (and (match_code "mem")
 168        (ior (match_operand 0 "memory_operand")
 169             (match_test "cris_general_operand_or_symbol (XEXP (op, 0),
 170                                                          Pmode)"))))