;; Constraint definitions for XSTORMY16. ;; 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 “a” “R0_REGS” “@internal”)

(define_register_constraint “b” “R1_REGS” “@internal”)

(define_register_constraint “c” “R2_REGS” “@internal”)

(define_register_constraint “d” “R8_REGS” “@internal”)

(define_register_constraint “e” “EIGHT_REGS” “@internal”)

(define_register_constraint “t” “TWO_REGS” “@internal”)

(define_register_constraint “z” “ICALL_REGS” “@internal”)

;; Integer constraints. (define_constraint “I” “An integer between 0 and 3.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 0, 3)”)))

(define_constraint “J” “A power of two.” (and (match_code “const_int”) (match_test “exact_log2 (ival) != -1”)))

(define_constraint “K” “A power of two when inverted.” (and (match_code “const_int”) (match_test “exact_log2 (~ival) != -1”)))

(define_constraint “L” “An 8-bit unsigned integer.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 0, 255)”)))

(define_constraint “M” “An integer between -255 and 0.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -255, 0)”)))

(define_constraint “N” “An integer between -3 and 0.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -3, 0)”)))

(define_constraint “O” “An integer between 1 and 4.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, 1, 4)”)))

(define_constraint “P” “An integer between -4 and -1.” (and (match_code “const_int”) (match_test “IN_RANGE (ival, -4, -1)”)))

;; Extra constraints. (define_constraint “Q” “A register push operation.” (and (match_code “mem”) (match_code “post_inc” “0”) (match_test “XEXP (XEXP (op, 0), 0) == stack_pointer_rtx”)))

(define_constraint “R” “A register pop operation.” (and (match_code “mem”) (match_code “pre_dec” “0”) (match_test “XEXP (XEXP (op, 0), 0) == stack_pointer_rtx”)))

(define_constraint “S” “An immediate memory address.” (and (match_code “mem”) (match_code “const_int” “0”) (match_test “xstormy16_legitimate_address_p (VOIDmode, XEXP (op, 0), false)”)))

(define_constraint “T” “@internal” ;; For Rx; not implemented yet. (match_test “0”))

(define_constraint “U” “An integer not between 2 and 15.” (and (match_code “const_int”) (match_test “!IN_RANGE (ival, 2, 15)”)))

(define_constraint “W” “@internal” (match_operand 0 “xstormy16_below100_operand”))

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