;; Machine Description for TI MSP43* processors ;; Copyright (C) 2013-2015 Free Software Foundation, Inc. ;; Contributed by Red Hat.
;; 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 “R12” “R12_REGS” “Register R12.”)
(define_register_constraint “R13” “R13_REGS” “Register R13.”)
(define_constraint “K” “Integer constant 1.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 1, 1)”)))
(define_constraint “L” “Integer constant -1^20..1^19.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -1 << 20, 1 << 19)”)))
(define_constraint “M” “Integer constant 1-4.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 1, 4)”)))
;; We do not allow arbitrary constants, eg symbols or labels, ;; because their address may be above the 16-bit address limit ;; supported by the offset used in the MOVA instruction. (define_constraint “Ya” “Memory reference, any type, but restricted range of constants” (and (match_code “mem”) (ior (match_code “reg” “0”) (and (match_code “plus” “0”) (match_code “reg” “00”) (match_test (“CONST_INT_P (XEXP (XEXP (op, 0), 1))”))) (match_test “CONSTANT_P (XEXP (op, 0))”) )))
(define_constraint “Yl” “Memory reference, labels only.” (and (match_code “mem”) (match_code “label_ref” “0”)))
;; These are memory references that are safe to use without the X suffix, ;; because we know/assume they need not index across the 64k boundary. (define_constraint “Ys” “Memory reference, stack only.” (and (match_code “mem”) (ior (and (match_code “plus” “0”) (and (match_code “reg” “00”) (match_test (“CONST_INT_P (XEXP (XEXP (op, 0), 1))”)) (match_test (“IN_RANGE (INTVAL (XEXP (XEXP (op, 0), 1)), -1 << 15, (1 << 15)-1)”)))) (match_code “reg” “0”) )))
(define_constraint “Yc” “Memory reference, for CALL - we can't use SP.” (and (match_code “mem”) (match_code “mem” “0”) (not (ior (and (match_code “plus” “00”) (and (match_code “reg” “000”) (match_test (“REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO”)))) (and (match_code “reg” “0”) (match_test (“REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO”))) ))))