;; Constraints for Vitesse IQ2000 processors ;; Copyright (C) 2011-2021 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/.

;; Register constraints. (define_register_constraint “b” “ALL_REGS” “@internal”)

(define_register_constraint “d” “GR_REGS” “@internal”)

(define_register_constraint “y” “GR_REGS” “@internal”)

;; Integer constraints. (define_constraint “I” “A 16-bit signed integer.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -32768, 32767)”)))

(define_constraint “J” “Zero.” (and (match_code “const_int”) (match_test “ival == 0”)))

(define_constraint “K” “A 16-bit unsigned integer” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 0, 65535)”)))

(define_constraint “L” “A 32-bit constant whose bottom 16 bits are zero.” (and (match_code “const_int”) (ior (match_test “(ival | 0x7fff0000) == 0x7fff0000”) (match_test “(ival | 0x7fff0000) + 0x10000 == 0”))))

(define_constraint “M” “Any constant not matched by ‘I’, ‘K’, or ‘L’.” (and (match_code “const_int”) (match_test “!insn_const_int_ok_for_constraint (ival, CONSTRAINT_I)”) (match_test “!insn_const_int_ok_for_constraint (ival, CONSTRAINT_K)”) (match_test “!insn_const_int_ok_for_constraint (ival, CONSTRAINT_L)”)))

(define_constraint “N” “Any constant whose lower or upper 16 bits are 0xffff.” (and (match_code “const_int”) (ior (match_test “(ival & 0xffff) == 0xffff”) (match_test “(ival & 0xffff0000) == 0xffff0000”))))

(define_constraint “O” “A 5-bit signed integer.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -31, 31)”)))

;; Floating-point constraints. (define_constraint “G” “Floating-point zero.” (and (match_code “const_double”) (match_test “op == CONST0_RTX (mode)”)))

;; Extra constraints. (define_constraint “R” “A memory reference which takes one word for the instruction.” (match_test “simple_memory_operand (op, mode)”))