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1 709 jeremybenn
;; Constraint definitions for m68k
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;; Copyright (C) 2007 Free Software Foundation, Inc.
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;; This file is part of GCC.
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;; GCC is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published
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;; by the Free Software Foundation; either version 3, or (at your
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;; option) any later version.
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;; GCC is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
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;; License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING3.  If not see
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;; .
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(define_register_constraint "a" "ADDR_REGS"
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  "Address register.")
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(define_register_constraint "d" "DATA_REGS"
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  "Data register.")
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(define_register_constraint "f" "TARGET_HARD_FLOAT ? FP_REGS : NO_REGS"
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  "Floating point register.")
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(define_constraint "I"
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  "Integer constant in the range 1 @dots 8, for immediate shift counts and addq."
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  (and (match_code "const_int")
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       (match_test "ival > 0 && ival <= 8")))
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(define_constraint "J"
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  "Signed 16-bit integer constant."
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  (and (match_code "const_int")
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       (match_test "ival >= -0x8000 && ival <= 0x7fff")))
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(define_constraint "K"
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  "Integer constant that moveq can't handle."
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  (and (match_code "const_int")
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       (match_test "ival < -0x80 || ival >= 0x80")))
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(define_constraint "L"
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  "Integer constant in the range -8 @dots -1, for subq."
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  (and (match_code "const_int")
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       (match_test "ival < 0 && ival >= -8")))
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(define_constraint "M"
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  "Integer constant that moveq+notb can't handle."
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  (and (match_code "const_int")
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       (match_test "ival < -0x100 || ival >= 0x100")))
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(define_constraint "N"
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  "Integer constant in the range 24 @dots 31, for rotatert:SI 8 to 1 expressed as rotate."
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  (and (match_code "const_int")
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       (match_test "ival >= 24 && ival <= 31")))
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(define_constraint "O"
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  "Integer constant 16, for rotate using swap."
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  (and (match_code "const_int")
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       (match_test "ival == 16")))
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(define_constraint "P"
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  "Integer constant in the range 8 @dots 15, for rotatert:HI 8 to 1 expressed as rotate."
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  (and (match_code "const_int")
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       (match_test "ival >= 8 && ival <= 15")))
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(define_constraint "R"
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  "Integer constant that mov3q can handle."
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  (and (match_code "const_int")
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       (match_test "valid_mov3q_const (ival)")))
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(define_constraint "G"
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  "Defines all of the floating constants that are *NOT* 68881
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   constants.  This is so 68881 constants get reloaded and the fpmovecr
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   is used."
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  (and (match_code "const_double")
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       (match_test "!(TARGET_68881 && standard_68881_constant_p (op))")))
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(define_constraint "H"
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  "Defines a real zero constant."
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  (and (match_code "const_double")
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       (match_test "op == CONST0_RTX (GET_MODE (op))")))
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(define_constraint "S"
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  "Used for operands that satisfy 'm' when -mpcrel is in effect."
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  (and (match_code "mem")
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       (match_test "TARGET_PCREL
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                    && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
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                        || GET_CODE (XEXP (op, 0)) == LABEL_REF
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                        || GET_CODE (XEXP (op, 0)) == CONST)")))
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(define_constraint "T"
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  "Used for operands that satisfy 's' when -mpcrel is not in effect."
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  (and (match_code "symbol_ref,label_ref,const")
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       (match_test "!TARGET_PCREL")
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       (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))
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(define_memory_constraint "Q"
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  "Means address register indirect addressing mode."
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  (and (match_code "mem")
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       (match_test "m68k_matches_q_p (op)")))
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(define_constraint "U"
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  "Used for register offset addressing."
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  (and (match_code "mem")
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       (match_test "m68k_matches_u_p (op)")))
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(define_constraint "W"
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  "Used for const_call_operands."
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  (match_operand 0 "const_call_operand"))
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(define_constraint "Cs"
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  "symbol_ref or const."
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  (match_code "symbol_ref,const"))
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(define_constraint "Ci"
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  "const_int."
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  (and (match_code "const_int")
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       (match_test "true")))
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(define_constraint "C0"
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  "const_int 0."
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  (and (match_code "const_int")
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       (match_test "ival == 0")))
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(define_constraint "Cj"
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  "Range of signed numbers that don't fit in 16 bits."
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  (and (match_code "const_int")
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       (match_test "ival < -0x8000 || ival > 0x7FFF")))
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(define_constraint "Cu"
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  "16-bit offset for wrapped symbols"
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  (and (match_code "const")
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       (match_test "m68k_unwrap_symbol (op, false) != op")))
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(define_constraint "CQ"
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  "Integers valid for mvq."
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  (and (match_code "const_int")
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       (match_test "m68k_const_method (ival) == MOVQ")))
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(define_constraint "CW"
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  "Integers valid for a moveq followed by a swap."
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  (and (match_code "const_int")
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       (match_test "m68k_const_method (ival) == SWAP")))
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(define_constraint "CZ"
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  "Integers valid for mvz."
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  (and (match_code "const_int")
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       (match_test "m68k_const_method (ival) == MVZ")))
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(define_constraint "CS"
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  "Integers valid for mvs."
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  (and (match_code "const_int")
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       (match_test "m68k_const_method (ival) == MVS")))
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(define_constraint "Ap"
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  "push_operand."
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  (match_operand 0 "push_operand"))
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(define_constraint "Ac"
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  "Non-register operands allowed in clr."
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  (and (match_operand 0 "movsi_const0_operand")
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       (match_test "!REG_P (op)")))

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