1 ;; Machine Description for TI MSP43* processors
2 ;; Copyright (C) 2013-2025 Free Software Foundation, Inc.
3 ;; Contributed by Red Hat.
5 ;; This file is part of GCC.
7 ;; GCC is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 3, or (at your option)
12 ;; GCC is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3. If not see
19 ;; <http://www.gnu.org/licenses/>.
21 (define_register_constraint "R12" "R12_REGS"
24 (define_register_constraint "R13" "R13_REGS"
27 (define_constraint "K"
28 "Integer constant 1-19."
29 (and (match_code "const_int")
30 (match_test "IN_RANGE (ival, 1, 19)")))
32 (define_constraint "L"
33 "Integer constant -1^20..1^19."
34 (and (match_code "const_int")
35 (match_test "IN_RANGE (ival, HOST_WIDE_INT_M1U << 20, 1 << 19)")))
37 ;; Valid shift amount for RRUM, RRAM, RLAM, RRCM.
38 (define_constraint "M"
39 "Integer constant 1-4."
40 (and (match_code "const_int")
41 (match_test "IN_RANGE (ival, 1, 4)")))
43 (define_constraint "N"
44 "Integer constant 0-255."
45 (and (match_code "const_int")
46 (match_test "IN_RANGE (ival, 0, 255)")))
48 (define_constraint "O"
49 "Integer constant 256-65535."
50 (and (match_code "const_int")
51 (match_test "IN_RANGE (ival, 256, 65535)")))
53 (define_constraint "P"
54 "Integer constant 1-16."
55 (and (match_code "const_int")
56 (match_test "IN_RANGE (ival, 1, 16)")))
58 ;; We do not allow arbitrary constants, eg symbols or labels,
59 ;; because their address may be above the 16-bit address limit
60 ;; supported by the offset used in the MOVA instruction.
61 (define_constraint "Ya"
62 "Memory reference, any type, but restricted range of constants"
63 (and (match_code "mem")
64 (ior (match_code "reg" "0")
65 (and (match_code "plus" "0")
66 (match_code "reg" "00")
67 (match_test ("CONST_INT_P (XEXP (XEXP (op, 0), 1))")))
68 (match_test "CONSTANT_P (XEXP (op, 0))")
69 (match_code "post_inc" "0")
72 (define_constraint "Yl"
73 "Memory reference, labels only."
74 (and (match_code "mem")
75 (match_code "label_ref" "0")))
78 ;; These are memory references that are safe to use without the X suffix,
79 ;; because we know/assume they need not index across the 64K boundary.
80 ;; Note that for a PSImode memory operand, we always need to use the X suffix,
81 ;; regardless of what this constraint decides.
82 (define_constraint "Ys"
83 "Memory reference, indexed or indirect register addressing modes."
84 (and (match_code "mem")
86 (and (match_code "plus" "0")
87 (and (match_code "reg" "00")
88 (match_test ("CONST_INT_P (XEXP (XEXP (op, 0), 1))"))
89 (match_test ("IN_RANGE (INTVAL (XEXP (XEXP (op, 0), 1)), HOST_WIDE_INT_M1U << 15, (1 << 15)-1)"))))
90 (match_code "reg" "0")
91 (match_code "post_inc" "0")
94 (define_constraint "Yc"
95 "Memory reference, for CALL - we can't use SP."
96 (and (match_code "mem")
97 (match_code "mem" "0")
99 (and (match_code "plus" "00")
100 (and (match_code "reg" "000")
101 (match_test ("REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO"))))
102 (and (match_code "reg" "0")
103 (match_test ("REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO")))
106 (define_constraint "Yx"
107 "Memory reference, in lower memory below address 0x10000."
108 (and (match_code "mem")
109 (match_test "msp430_op_not_in_high_mem (op)")))