]>
Commit | Line | Data |
---|---|---|
44d2fca6 | 1 | ;;- Constraint definitions for the pdp11 for GNU C compiler |
f1717362 | 2 | ;; Copyright (C) 2010-2016 Free Software Foundation, Inc. |
44d2fca6 | 3 | ;; Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at). |
4 | ||
5 | ;; This file is part of GCC. | |
6 | ||
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) | |
10 | ;; any later version. | |
11 | ||
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. | |
16 | ||
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/>. | |
20 | ||
21 | (define_register_constraint "f" "FPU_REGS" | |
22 | "Any FPU register") | |
23 | ||
24 | (define_register_constraint "a" "LOAD_FPU_REGS" | |
25 | "FPU register that can be directly loaded from memory") | |
26 | ||
27 | (define_register_constraint "d" "MUL_REGS" | |
28 | "General register that can be used for 16-bit multiply (odd numbered)") | |
29 | ||
30 | (define_constraint "I" | |
31 | "Integer constant that fits in 16 bits unsigned" | |
32 | (and (match_code "const_int") | |
33 | (match_test "(ival & 0xffff0000) == 0"))) | |
34 | ||
35 | (define_constraint "J" | |
36 | "Integer constant whose low 16 bits are zero" | |
37 | (and (match_code "const_int") | |
38 | (match_test "(ival & 0xffff) == 0"))) | |
39 | ||
40 | (define_constraint "K" | |
41 | "Integer constant whose lower and upper 16 bit half are both non-zero" | |
42 | (and (match_code "const_int") | |
43 | (match_test "(ival & 0xffff) != 0 && (ival & 0xffff0000) != 0"))) | |
44 | ||
45 | (define_constraint "L" | |
46 | "Integer constant 1" | |
47 | (and (match_code "const_int") | |
48 | (match_test "ival == 1"))) | |
49 | ||
50 | (define_constraint "M" | |
51 | "Integer constant -1" | |
52 | (and (match_code "const_int") | |
53 | (match_test "ival == -1"))) | |
54 | ||
55 | (define_constraint "N" | |
56 | "Integer constant 0" | |
57 | (and (match_code "const_int") | |
58 | (match_test "ival == 0"))) | |
59 | ||
60 | (define_constraint "O" | |
61 | "Integer constant for which several individual shifts are better than one big one" | |
62 | (and (match_code "const_int") | |
63 | (match_test "abs (ival) > 1 && abs (ival) <= 4"))) | |
64 | ||
65 | (define_constraint "G" | |
66 | "Defines a real zero constant." | |
67 | (and (match_code "const_double") | |
68 | (match_test "op == CONST0_RTX (GET_MODE (op))"))) | |
69 | ||
70 | (define_constraint "Q" | |
71 | "Memory reference that requires an additional word after the opcode" | |
72 | (and (match_code "mem") | |
73 | (match_test "memory_address_p (GET_MODE (op), XEXP (op, 0)) | |
74 | && !simple_memory_operand (op, GET_MODE (op))"))) | |
75 | ||
76 | (define_constraint "R" | |
77 | "Memory reference that is encoded within the opcode" | |
78 | (and (match_code "mem") | |
79 | (match_test "memory_address_p (GET_MODE (op), XEXP (op, 0)) | |
80 | && simple_memory_operand (op, GET_MODE (op))"))) | |
81 |