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;; Machine Description for TI MSP43* processors
;; Copyright (C) 2013-2014 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")))
))))
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