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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
|
/* Header file for mixed range operator class.
Copyright (C) 2017-2023 Free Software Foundation, Inc.
Contributed by Andrew MacLeod <amacleod@redhat.com>
and Aldy Hernandez <aldyh@redhat.com>.
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/>. */
#ifndef GCC_RANGE_OP_MIXED_H
#define GCC_RANGE_OP_MIXED_H
enum bool_range_state { BRS_FALSE, BRS_TRUE, BRS_EMPTY, BRS_FULL };
bool_range_state get_bool_state (vrange &r, const vrange &lhs, tree val_type);
// If the range of either op1 or op2 is undefined, set the result to
// varying and return TRUE. If the caller truly cares about a result,
// they should pass in a varying if it has an undefined that it wants
// treated as a varying.
inline bool
empty_range_varying (vrange &r, tree type,
const vrange &op1, const vrange & op2)
{
if (op1.undefined_p () || op2.undefined_p ())
{
r.set_varying (type);
return true;
}
else
return false;
}
// For relation opcodes, first try to see if the supplied relation
// forces a true or false result, and return that.
// Then check for undefined operands. If none of this applies,
// return false.
inline bool
relop_early_resolve (irange &r, tree type, const vrange &op1,
const vrange &op2, relation_trio trio,
relation_kind my_rel)
{
relation_kind rel = trio.op1_op2 ();
// If known relation is a complete subset of this relation, always true.
if (relation_union (rel, my_rel) == my_rel)
{
r = range_true (type);
return true;
}
// If known relation has no subset of this relation, always false.
if (relation_intersect (rel, my_rel) == VREL_UNDEFINED)
{
r = range_false (type);
return true;
}
// If either operand is undefined, return VARYING.
if (empty_range_varying (r, type, op1, op2))
return true;
return false;
}
// ----------------------------------------------------------------------
// Mixed Mode Operators.
// ----------------------------------------------------------------------
class operator_equal : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &val,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &val,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (frange &r, tree type,
const irange &lhs, const frange &op1,
relation_trio rel = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh,
const irange &rh) const final override;
};
class operator_not_equal : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &op1,
relation_trio = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh,
const irange &rh) const final override;
};
class operator_lt : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &op1,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (frange &r, tree type,
const irange &lhs, const frange &op1,
relation_trio = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh,
const irange &rh) const final override;
};
class operator_le : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &op1,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (frange &r, tree type,
const irange &lhs, const frange &op1,
relation_trio rel = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh,
const irange &rh) const final override;
};
class operator_gt : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio = TRIO_VARYING) const;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &op1,
relation_trio = TRIO_VARYING) const;
bool op2_range (frange &r, tree type,
const irange &lhs, const frange &op1,
relation_trio = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh, const irange &rh) const;
};
class operator_ge : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::op2_range;
using range_operator::op1_op2_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool fold_range (irange &r, tree type,
const frange &op1, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type,
const irange &lhs, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (irange &r, tree type,
const irange &lhs, const irange &op1,
relation_trio = TRIO_VARYING) const final override;
bool op2_range (frange &r, tree type,
const irange &lhs, const frange &op1,
relation_trio = TRIO_VARYING) const final override;
relation_kind op1_op2_relation (const irange &lhs) const final override;
void update_bitmask (irange &r, const irange &lh,
const irange &rh) const final override;
};
class operator_identity : public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::lhs_op1_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool fold_range (frange &r, tree type ATTRIBUTE_UNUSED,
const frange &op1, const frange &op2 ATTRIBUTE_UNUSED,
relation_trio = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool op1_range (frange &r, tree type ATTRIBUTE_UNUSED,
const frange &lhs, const frange &op2 ATTRIBUTE_UNUSED,
relation_trio = TRIO_VARYING) const final override;
relation_kind lhs_op1_relation (const irange &lhs,
const irange &op1, const irange &op2,
relation_kind rel) const final override;
};
class operator_cst : public range_operator
{
public:
using range_operator::fold_range;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool fold_range (frange &r, tree type,
const frange &op1, const frange &op2,
relation_trio = TRIO_VARYING) const final override;
};
class operator_cast: public range_operator
{
public:
using range_operator::fold_range;
using range_operator::op1_range;
using range_operator::lhs_op1_relation;
bool fold_range (irange &r, tree type,
const irange &op1, const irange &op2,
relation_trio rel = TRIO_VARYING) const final override;
bool op1_range (irange &r, tree type,
const irange &lhs, const irange &op2,
relation_trio rel = TRIO_VARYING) const final override;
relation_kind lhs_op1_relation (const irange &lhs,
const irange &op1, const irange &op2,
relation_kind) const final override;
private:
bool truncating_cast_p (const irange &inner, const irange &outer) const;
bool inside_domain_p (const wide_int &min, const wide_int &max,
const irange &outer) const;
void fold_pair (irange &r, unsigned index, const irange &inner,
const irange &outer) const;
};
#endif // GCC_RANGE_OP_MIXED_H
|
