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;; Constraint definitions for CRIS.
;; Copyright (C) 2011-2023 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.
;; Kept for compatibility. It used to exclude the CRIS v32
;; register "ACR", which was like GENERAL_REGS except it
;; couldn't be used for autoincrement, and intended mainly
;; for use in user asm statements.
(define_register_constraint "b" "GENERAL_REGS"
"@internal")
(define_register_constraint "h" "MOF_REGS"
"@internal")
(define_register_constraint "x" "SPECIAL_REGS"
"@internal")
(define_register_constraint "c" "CC0_REGS"
"@internal")
;; Integer constraints.
(define_constraint "I"
"MOVEQ, CMPQ, ANDQ, ORQ."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -32, 31)")))
(define_constraint "J"
"ADDQ, SUBQ."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 0, 63)")))
(define_constraint "Kc"
"ASRQ, BTSTQ, LSRQ, LSLQ."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, 0, 31)")))
(define_constraint "Kp"
"A power of two."
(and (match_code "const_int")
(match_test "exact_log2 (ival) >= 0")))
(define_constraint "L"
"A 16-bit signed number."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -32768, 32767)")))
(define_constraint "M"
"The constant 0 for CLEAR."
(and (match_code "const_int")
(match_test "ival == 0")))
(define_constraint "N"
"A negative ADDQ or SUBQ."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -63, -1)")))
(define_constraint "O"
"Quickened ints, QI and HI."
(and (match_code "const_int")
(ior (match_test "IN_RANGE (ival, (65535 - 31), 65535)")
(match_test "IN_RANGE (ival, (255 - 31), 255)"))))
(define_constraint "P"
"A 16-bit number signed *or* unsigned."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -32768, 65535)")))
;; Floating-point constant constraints.
(define_constraint "G"
"The floating point zero constant"
(and (match_code "const_double")
(match_test "GET_MODE_CLASS (mode) == MODE_FLOAT")
(match_test "op == CONST0_RTX (mode)")))
;; Memory constraints.
;; Just an indirect register (happens to also be "all" slottable
;; memory addressing modes not covered by other constraints, i.e. '>').
(define_memory_constraint "Q"
"@internal"
(and (match_code "mem")
(match_test "cris_base_p (XEXP (op, 0), lra_in_progress
|| reload_completed)")))
;; Extra constraints.
(define_memory_constraint "T"
"Memory three-address operand."
;; All are indirect-memory:
(and (match_code "mem")
;; Double indirect: [[reg]] or [[reg+]]?
(ior (and (match_code "mem" "0")
(match_test "cris_base_or_autoincr_p (XEXP (XEXP (op, 0), 0),
lra_in_progress
|| reload_completed)"))
;; Just an explicit indirect reference: [const]?
(match_test "CONSTANT_P (XEXP (op, 0))")
;; Something that is indexed; [...+...]?
(and (match_code "plus" "0")
;; A BDAP constant: [reg+(8|16|32)bit offset]?
(ior (and (match_test "cris_base_p (XEXP (XEXP (op, 0), 0),
lra_in_progress
|| reload_completed)")
(match_test "CONSTANT_P (XEXP (XEXP (op, 0), 1))"))
;; A BDAP register: [reg+[reg(+)].S]?
(and (match_test "cris_base_p (XEXP (XEXP (op, 0), 0),
lra_in_progress
|| reload_completed)")
(match_test "cris_bdap_index_p (XEXP (XEXP (op, 0), 1),
lra_in_progress
|| reload_completed)"))
;; Same, but with swapped arguments (no canonical
;; ordering between e.g. REG and MEM as of LAST_UPDATED
;; "Thu May 12 03:59:11 UTC 2005").
(and (match_test "cris_base_p (XEXP (XEXP (op, 0), 1),
lra_in_progress
|| reload_completed)")
(match_test "cris_bdap_index_p (XEXP (XEXP (op, 0), 0),
lra_in_progress
|| reload_completed)"))
;; A BIAP: [reg+reg.S] (MULT comes first).
(and (match_test "cris_base_p (XEXP (XEXP (op, 0), 1),
lra_in_progress
|| reload_completed)")
(match_test "cris_biap_index_p (XEXP (XEXP (op, 0), 0),
lra_in_progress
|| reload_completed)")))))))
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