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;; Common GCC machine description file, shared by all targets. ;; Copyright (C) 2014-2020 Free Software Foundation, Inc. ;; ;; This file is part of GCC. ;; ;; GCC is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 3, or (at your option) ;; any later version. ;; ;; GCC is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/. */
(define_register_constraint "r" "GENERAL_REGS" "Matches any general register.")
(define_memory_constraint "TARGET_MEM_CONSTRAINT" "Matches any valid memory." (and (match_code "mem") (match_test "memory_address_addr_space_p (GET_MODE (op), XEXP (op, 0), MEM_ADDR_SPACE (op))")))
(define_memory_constraint "o" "Matches an offsettable memory reference." (and (match_code "mem") (match_test "offsettable_nonstrict_memref_p (op)")))
;; "V" matches TARGET_MEM_CONSTRAINTs that are rejected by "o". ;; This means that it is not a memory constraint in the usual sense, ;; since reloading the address into a base register would make the ;; address offsettable. (define_constraint "V" "Matches a non-offsettable memory reference." (and (match_code "mem") (match_test "memory_address_addr_space_p (GET_MODE (op), XEXP (op, 0), MEM_ADDR_SPACE (op))") (not (match_test "offsettable_nonstrict_memref_p (op)"))))
;; Like "V", this is not a memory constraint, since reloading the address ;; into a base register would cause it not to match. (define_constraint "<" "Matches a pre-dec or post-dec operand." (and (match_code "mem") (ior (match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC") (match_test "GET_CODE (XEXP (op, 0)) == POST_DEC"))))
;; See the comment for "<". (define_constraint ">" "Matches a pre-inc or post-inc operand." (and (match_code "mem") (ior (match_test "GET_CODE (XEXP (op, 0)) == PRE_INC") (match_test "GET_CODE (XEXP (op, 0)) == POST_INC"))))
(define_address_constraint "p" "Matches a general address." (match_test "address_operand (op, VOIDmode)"))
(define_constraint "i" "Matches a general integer constant." (and (match_test "CONSTANT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))
(define_constraint "s" "Matches a symbolic integer constant." (and (match_test "CONSTANT_P (op)") (match_test "!CONST_SCALAR_INT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))
(define_constraint "n" "Matches a non-symbolic integer constant." (and (match_test "CONST_SCALAR_INT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))
(define_constraint "E" "Matches a floating-point constant." (ior (match_test "CONST_DOUBLE_AS_FLOAT_P (op)") (match_test "GET_CODE (op) == CONST_VECTOR && GET_MODE_CLASS (GET_MODE (op)) == MODE_VECTOR_FLOAT")))
;; There is no longer a distinction between "E" and "F". (define_constraint "F" "Matches a floating-point constant." (ior (match_test "CONST_DOUBLE_AS_FLOAT_P (op)") (match_test "GET_CODE (op) == CONST_VECTOR && GET_MODE_CLASS (GET_MODE (op)) == MODE_VECTOR_FLOAT")))
(define_constraint "X" "Matches anything." (match_test "true"))