1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
;; Constraint definitions for ATMEL AVR micro controllers.
;; Copyright (C) 2006-2020 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 "t" "R0_REG"
"Temporary register r0")
(define_register_constraint "b" "BASE_POINTER_REGS"
"Base pointer registers (r28--r31)")
(define_register_constraint "e" "POINTER_REGS"
"Pointer registers (r26--r31)")
(define_register_constraint "w" "ADDW_REGS"
"Registers from r24 to r31. These registers
can be used in @samp{adiw} command.")
(define_register_constraint "d" "LD_REGS"
"Registers from r16 to r31.")
(define_register_constraint "l" "NO_LD_REGS"
"Registers from r0 to r15.")
(define_register_constraint "a" "SIMPLE_LD_REGS"
"Registers from r16 to r23.")
(define_register_constraint "x" "POINTER_X_REGS"
"Register pair X (r27:r26).")
(define_register_constraint "y" "POINTER_Y_REGS"
"Register pair Y (r29:r28).")
(define_register_constraint "z" "POINTER_Z_REGS"
"Register pair Z (r31:r30).")
(define_register_constraint "q" "STACK_REG"
"Stack pointer register (SPH:SPL).")
(define_constraint "I"
"Integer constant in the range 0 @dots{} 63."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 63")))
(define_constraint "J"
"Integer constant in the range -63 @dots{} 0."
(and (match_code "const_int")
(match_test "ival <= 0 && ival >= -63")))
(define_constraint "K"
"Integer constant 2."
(and (match_code "const_int")
(match_test "ival == 2")))
(define_constraint "L"
"Zero."
(and (match_code "const_int")
(match_test "ival == 0")))
(define_constraint "M"
"Integer constant in the range 0 @dots{} 0xff."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 0xff")))
(define_constraint "N"
"Constant integer @minus{}1."
(and (match_code "const_int")
(match_test "ival == -1")))
(define_constraint "O"
"Constant integer 8, 16, or 24."
(and (match_code "const_int")
(match_test "ival == 8 || ival == 16 || ival == 24")))
(define_constraint "P"
"Constant integer 1."
(and (match_code "const_int")
(match_test "ival == 1")))
(define_constraint "G"
"Constant float 0."
(and (match_code "const_double")
(match_test "op == CONST0_RTX (SFmode)")))
(define_memory_constraint "Q"
"A memory address based on Y or Z pointer with displacement."
(and (match_code "mem")
(match_test "extra_constraint_Q (op)")))
(define_constraint "Cm2"
"Constant integer @minus{}2."
(and (match_code "const_int")
(match_test "ival == -2")))
(define_constraint "C03"
"Constant integer 3."
(and (match_code "const_int")
(match_test "ival == 3")))
(define_constraint "C04"
"Constant integer 4."
(and (match_code "const_int")
(match_test "ival == 4")))
(define_constraint "C05"
"Constant integer 5."
(and (match_code "const_int")
(match_test "ival == 5")))
(define_constraint "C06"
"Constant integer 6."
(and (match_code "const_int")
(match_test "ival == 6")))
(define_constraint "C07"
"Constant integer 7."
(and (match_code "const_int")
(match_test "ival == 7")))
(define_constraint "Ca1"
"Constant 1-byte integer that allows AND by means of CLT + BLD."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 1, 1<<7)")))
(define_constraint "Ca2"
"Constant 2-byte integer that allows AND without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 2, (1<<0) | (1<<7) | (1<<8))")))
(define_constraint "Ca3"
"Constant 3-byte integer that allows AND without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 3, (1<<0) | (1<<7) | (1<<8))")))
(define_constraint "Ca4"
"Constant 4-byte integer that allows AND without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 4, (1<<0) | (1<<7) | (1<<8))")))
(define_constraint "Co1"
"Constant 1-byte integer that allows AND by means of SET + BLD."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 1, 1<<1)")))
(define_constraint "Co2"
"Constant 2-byte integer that allows OR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 2, (1<<0) | (1<<1) | (1<<8))")))
(define_constraint "Co3"
"Constant 3-byte integer that allows OR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 3, (1<<0) | (1<<1) | (1<<8))")))
(define_constraint "Co4"
"Constant 4-byte integer that allows OR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 4, (1<<0) | (1<<1) | (1<<8))")))
(define_constraint "Cx2"
"Constant 2-byte integer that allows XOR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 2, (1<<0) | (1<<8))")))
(define_constraint "Cx3"
"Constant 3-byte integer that allows XOR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 3, (1<<0) | (1<<8))")))
(define_constraint "Cx4"
"Constant 4-byte integer that allows XOR without clobber register."
(and (match_code "const_int")
(match_test "avr_popcount_each_byte (op, 4, (1<<0) | (1<<8))")))
(define_constraint "Csp"
"Integer constant in the range -11 @dots{} 6."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -11, 6)")))
(define_constraint "Cxf"
"32-bit integer constant where at least one nibble is 0xf."
(and (match_code "const_int")
(match_test "avr_has_nibble_0xf (op)")))
(define_constraint "C0f"
"32-bit integer constant where no nibble equals 0xf."
(and (match_code "const_int")
(match_test "!avr_has_nibble_0xf (op)")))
(define_constraint "Cn8"
"A negative constant integer in the range @minus{}255 @dots{} @minus{}1."
(and (match_code "const_int")
(match_test "IN_RANGE (ival, -255, -1)")))
;; CONST_FIXED is no element of 'n' so cook our own.
;; "i" or "s" would match but because the insn uses iterators that cover
;; INT_MODE, "i" or "s" is not always possible.
(define_constraint "Ynn"
"Fixed-point constant known at compile time."
(match_code "const_fixed"))
(define_constraint "Y00"
"Fixed-point or integer constant with bit representation 0x0"
(and (match_code "const_fixed,const_int")
(match_test "op == CONST0_RTX (GET_MODE (op))")))
(define_constraint "Y01"
"Fixed-point or integer constant with bit representation 0x1"
(ior (and (match_code "const_fixed")
(match_test "INTVAL (avr_to_int_mode (op)) == 1"))
(match_test "satisfies_constraint_P (op)")))
(define_constraint "Ym1"
"Fixed-point or integer constant with bit representation -0x1"
(ior (and (match_code "const_fixed")
(match_test "INTVAL (avr_to_int_mode (op)) == -1"))
(match_test "satisfies_constraint_N (op)")))
(define_constraint "Y02"
"Fixed-point or integer constant with bit representation 0x2"
(ior (and (match_code "const_fixed")
(match_test "INTVAL (avr_to_int_mode (op)) == 2"))
(match_test "satisfies_constraint_K (op)")))
(define_constraint "Ym2"
"Fixed-point or integer constant with bit representation -0x2"
(ior (and (match_code "const_fixed")
(match_test "INTVAL (avr_to_int_mode (op)) == -2"))
(match_test "satisfies_constraint_Cm2 (op)")))
(define_constraint "Yx2"
"Fixed-point or integer constant not in the range @minus{}2 @dots{} 2"
(and (ior (match_code "const_int")
(match_code "const_fixed"))
(match_test "!IN_RANGE (INTVAL (avr_to_int_mode (op)), -2, 2)")))
;; Similar to "IJ" used with ADIW/SBIW, but for CONST_FIXED.
(define_constraint "YIJ"
"Fixed-point constant from @minus{}0x003f to 0x003f."
(and (match_code "const_fixed")
(match_test "IN_RANGE (INTVAL (avr_to_int_mode (op)), -63, 63)")))
|
