108 lines
3.3 KiB
Markdown
108 lines
3.3 KiB
Markdown
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;; Constraint definitions for the MN10300.
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;; Copyright (C) 2007-2021 Free Software Foundation, Inc.
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;;
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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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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;; <http://www.gnu.org/licenses/>.
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(define_register_constraint "d" "DATA_REGS"
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"A data register.")
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(define_register_constraint "a" "ADDRESS_REGS"
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"An address register.")
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;; This can be used for QI/HImode memory operations, and most arithmetic.
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;; AM33 supports these on all registers, where MN103 needs DATA_REGS.
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(define_register_constraint "D" "TARGET_AM33 ? GENERAL_REGS : DATA_REGS"
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"A general register for AM33, and a data register otherwise.")
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;; Similarly for ADDRESS_REGS vs GENERAL_REGS.
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(define_register_constraint "A" "TARGET_AM33 ? GENERAL_REGS : ADDRESS_REGS"
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"A general register for AM33, and an address register otherwise.")
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(define_register_constraint "y" "SP_REGS"
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"An SP register (if available).")
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(define_register_constraint "z" "MDR_REGS"
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"The MDR register.")
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(define_register_constraint "x" "TARGET_AM33 ? EXTENDED_REGS : NO_REGS"
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"An extended register.")
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(define_register_constraint "f" "TARGET_AM33_2 ? FP_REGS : NO_REGS"
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"A floating point register.")
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(define_register_constraint "c" "TARGET_AM33_2 ? FP_ACC_REGS : NO_REGS"
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"A floating point accumulator register.")
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(define_memory_constraint "Q"
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"@internal"
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(and (match_code "mem")
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(match_test "!CONSTANT_ADDRESS_P (XEXP (op, 0))")))
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(define_constraint "S"
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"@internal"
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(if_then_else (match_test "flag_pic")
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(and (match_test "GET_CODE (op) == UNSPEC")
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(ior (match_test "XINT (op, 1) == UNSPEC_PLT")
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(match_test "XINT (op, 1) == UNSPEC_PIC")
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(match_test "XINT (op, 1) == UNSPEC_GOTSYM_OFF")))
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(match_test "GET_CODE (op) == SYMBOL_REF")))
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;; Integer constraints
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(define_constraint "I"
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"An integer zero."
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(and (match_code "const_int")
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(match_test "ival == 0")))
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(define_constraint "J"
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"An integer one."
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(and (match_code "const_int")
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(match_test "ival == 1")))
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(define_constraint "K"
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"An integer two."
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(and (match_code "const_int")
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(match_test "ival == 2")))
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(define_constraint "L"
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"An integer four."
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(and (match_code "const_int")
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(match_test "ival == 4")))
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(define_constraint "M"
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"An integer three."
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(and (match_code "const_int")
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(match_test "ival == 3")))
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(define_constraint "N"
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"An integer of either 255 or 65535."
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(and (match_code "const_int")
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(ior (match_test "ival == 255")
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(match_test "ival == 65535"))))
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(define_constraint "O"
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"An integer between -8 and +7 inclusive."
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(and (match_code "const_int")
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(and (match_test "ival >= -8")
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(match_test "ival <= 7"))))
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;; Floating-point constraints
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(define_constraint "G"
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"Floating-point zero."
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(and (match_code "const_double")
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(match_test "op == CONST0_RTX (mode)")))
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