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
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
|
/* PR middle-end/78257 - missing memcmp optimization with constant arrays
{ dg-do compile }
{ dg-options "-O -Wall -fdump-tree-optimized" }
{ dg-skip-if "missing data representation" { "pdp11-*-*" } } */
#define offsetof(T, m) __builtin_offsetof (T, m)
typedef __INT8_TYPE__ int8_t;
typedef __INT16_TYPE__ int16_t;
typedef __INT32_TYPE__ int32_t;
typedef __INT64_TYPE__ int64_t;
typedef __SIZE_TYPE__ size_t;
extern int memcmp (const void*, const void*, size_t);
const int32_t ia4[4] = { 0x11121314, 0x21222324, 0x31323334, 0x41424344 };
const int32_t ia4_des[4] =
{ [2] = 0x31323334, [0] = 0x11121314, 0x21222324, [3] = 0x41424344 };
const char ia4_rep[] =
{
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
"\x11\x12\x13\x14" "\x21\x22\x23\x24"
"\x31\x32\x33\x34" "\x41\x42\x43\x44"
#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
"\x14\x13\x12\x11" "\x24\x23\x22\x21"
"\x34\x33\x32\x31" "\x44\x43\x42\x41"
#endif
};
void eq_ia4 (void)
{
int n = 0, b = sizeof ia4;
const char *p = (const char*)ia4, *q = ia4_rep;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
p = (const char*)ia4_des;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
if (n != 0)
__builtin_abort ();
}
const float fa4[4] = { 1.0, 2.0, 3.0, 4.0 };
const float fa4_des[4] = { [0] = fa4[0], [1] = 2.0, [2] = fa4[2], [3] = 4.0 };
void eq_fa4 (void)
{
int n = 0, b = sizeof fa4;
const char *p = (const char*)fa4, *q = (const char*)fa4_des;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
if (n != 0)
__builtin_abort ();
}
/* Verify "greater than" comparison with the difference in the last byte. */
const char ia4_xrep_16[sizeof ia4] =
{
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
0x11, 0x12, 0x13, 0x14, 0x21, 0x22, 0x23, 0x24,
0x31, 0x32, 0x33, 0x34, 0x41, 0x42, 0x43
#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
0x14, 0x13, 0x12, 0x11, 0x24, 0x23, 0x22, 0x21,
0x34, 0x33, 0x32, 0x31, 0x44, 0x43, 0x42
#endif
};
void gt_ia4 (void)
{
int n = 0, b = sizeof ia4;
const char *p = (const char*)ia4, *q = ia4_xrep_16;
n += 0 < memcmp (p, q, b);
n += 0 < memcmp (p + 1, q + 1, b - 1);
n += 0 < memcmp (p + 2, q + 2, b - 2);
n += 0 < memcmp (p + 3, q + 3, b - 3);
n += 0 < memcmp (p + 4, q + 4, b - 4);
n += 0 < memcmp (p + 5, q + 5, b - 5);
n += 0 < memcmp (p + 6, q + 6, b - 6);
n += 0 < memcmp (p + 7, q + 7, b - 7);
n += 0 < memcmp (p + 8, q + 8, b - 8);
n += 0 < memcmp (p + 9, q + 9, b - 9);
n += 0 < memcmp (p + 10, q + 10, b - 10);
n += 0 < memcmp (p + 11, q + 11, b - 11);
n += 0 < memcmp (p + 12, q + 12, b - 12);
n += 0 < memcmp (p + 13, q + 13, b - 13);
n += 0 < memcmp (p + 14, q + 14, b - 14);
n += 0 < memcmp (p + 15, q + 15, b - 15);
if (n != 16)
__builtin_abort ();
}
struct S8_16_32
{
int8_t i8;
int16_t i16;
int32_t i32;
};
_Static_assert (sizeof (struct S8_16_32) == 8);
const struct S8_16_32 s8_16_32 = { 1, 0x2122, 0x31323334 };
const struct S8_16_32 s8_16_32_des =
{ .i8 = 1, .i16 = 0x2122, .i32 = 0x31323334 };
const char s8_16_32_rep[] =
{
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1, 0, 0x21, 0x22, 0x31, 0x32, 0x33, 0x34
#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1, 0, 0x22, 0x21, 0x34, 0x33, 0x32, 0x31
#endif
};
void eq_s8_16_32 (void)
{
int n = 0, b = sizeof s8_16_32;
const char *p = (char*)&s8_16_32, *q = s8_16_32_rep;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
p = (char*)&s8_16_32_des;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
if (n != 0)
__builtin_abort ();
}
struct S8_16_32_64
{
/* 0 */ int8_t i8;
/* 1 */ int8_t: 1;
/* 2 */ int16_t i16;
/* 4 */ int32_t: 1;
/* 8 */ int32_t i32;
/* 12 */ int32_t: 1;
/* 16 */ int64_t i64;
/* 24 */ int8_t: 0;
};
_Static_assert (offsetof (struct S8_16_32_64, i16) == 2);
_Static_assert (offsetof (struct S8_16_32_64, i32) == 8);
_Static_assert (offsetof (struct S8_16_32_64, i64) == 16);
_Static_assert (sizeof (struct S8_16_32_64) == 24);
const struct S8_16_32_64 s8_16_32_64 =
{ 1, 0x2122, 0x31323334, 0x4142434445464748LLU };
const char s8_16_32_64_rep[sizeof s8_16_32_64] =
{
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
"\x01" "\x00" "\x21\x22" "\x00\x00\x00\x00" "\x31\x32\x33\x34"
"\x00\x00\x00\x00" "\x41\x42\x43\x44\x45\x46\x47\x48"
#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
"\x01" "\x00" "\x22\x21" "\x00\x00\x00\x00" "\x34\x33\x32\x31"
"\x00\x00\x00\x00" "\x48\x47\x46\x45\x44\x43\x42\x41"
#endif
};
const struct S8_16_32_64 s8_16_32_64_des =
{ .i64 = 0x4142434445464748LLU, .i16 = 0x2122, .i32 = 0x31323334, .i8 = 1 };
void eq_8_16_32_64 (void)
{
int n = 0, b = sizeof s8_16_32_64;
const char *p = (char*)&s8_16_32_64, *q = s8_16_32_64_rep;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
n += memcmp (p + 17, q + 17, b - 17);
n += memcmp (p + 18, q + 18, b - 18);
n += memcmp (p + 19, q + 19, b - 19);
n += memcmp (p + 20, q + 20, b - 20);
n += memcmp (p + 21, q + 21, b - 21);
n += memcmp (p + 22, q + 22, b - 22);
n += memcmp (p + 23, q + 23, b - 23);
p = (char*)&s8_16_32_64_des;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
n += memcmp (p + 17, q + 17, b - 17);
n += memcmp (p + 18, q + 18, b - 18);
n += memcmp (p + 19, q + 19, b - 19);
n += memcmp (p + 20, q + 20, b - 20);
n += memcmp (p + 21, q + 21, b - 21);
n += memcmp (p + 22, q + 22, b - 22);
n += memcmp (p + 23, q + 23, b - 23);
if (n != 0)
__builtin_abort ();
}
struct S64_x_3
{
int64_t i64a[3];
};
_Static_assert (sizeof (struct S64_x_3) == 24);
const struct S64_x_3 s64_x_3 =
{ { 0x0000000021220001LLU, 0x0000000031323334LLU, 0x4142434445464748LLU } };
const char s64_x_3_rep[sizeof s64_x_3] =
{
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
"\x00\x00\x00\x00\x21\x22\x00\x01"
"\x00\x00\x00\x00\x31\x32\x33\x34"
"\x41\x42\x43\x44\x45\x46\x47\x48"
#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
"\x01\x00\x22\x21\x00\x00\x00\x00"
"\x34\x33\x32\x31\x00\x00\x00\x00"
"\x48\x47\x46\x45\x44\x43\x42\x41"
#endif
};
void eq_64_x_3 (void)
{
int n = 0, b = sizeof s8_16_32_64;
const char *p = (char*)&s8_16_32_64, *q = s64_x_3_rep;
n += memcmp (p, q, b);
n += memcmp (p + 1, q + 1, b - 1);
n += memcmp (p + 2, q + 2, b - 2);
n += memcmp (p + 3, q + 3, b - 3);
n += memcmp (p + 4, q + 4, b - 4);
n += memcmp (p + 5, q + 5, b - 5);
n += memcmp (p + 6, q + 6, b - 6);
n += memcmp (p + 7, q + 7, b - 7);
n += memcmp (p + 8, q + 8, b - 8);
n += memcmp (p + 9, q + 9, b - 9);
n += memcmp (p + 10, q + 10, b - 10);
n += memcmp (p + 11, q + 11, b - 11);
n += memcmp (p + 12, q + 12, b - 12);
n += memcmp (p + 13, q + 13, b - 13);
n += memcmp (p + 14, q + 14, b - 14);
n += memcmp (p + 15, q + 15, b - 15);
n += memcmp (p + 16, q + 16, b - 16);
n += memcmp (p + 17, q + 17, b - 17);
n += memcmp (p + 18, q + 18, b - 18);
n += memcmp (p + 19, q + 19, b - 19);
n += memcmp (p + 20, q + 20, b - 20);
n += memcmp (p + 21, q + 21, b - 21);
n += memcmp (p + 22, q + 22, b - 22);
n += memcmp (p + 23, q + 23, b - 23);
if (n != 0)
__builtin_abort ();
}
/* { dg-final { scan-tree-dump-not "abort" "optimized" } } */
|
