OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [builtin-prefetch-4.c] - Blame information for rev 825

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 149 jeremybenn 
/* Test that __builtin_prefetch does no harm.
2 
 
3 
   Check that the expression containing the address to prefetch is
4 
   evaluated if it has side effects, even if the target does not support
5 
   data prefetch.  Check changes to pointers and to array indices that are
6 
   either global variables or arguments.  */
7 
 
8 
#define ARRSIZE 100
9 
 
10 
int arr[ARRSIZE];
11 
int *ptr = &arr[20];
12 
int arrindex = 4;
13 
 
14 
/* Check that assignment within a prefetch argument is evaluated.  */
15 
 
16 
int
17 
assign_arg_ptr (int *p)
18 
{
19 
  int *q;
20 
  __builtin_prefetch ((q = p), 0, 0);
21 
  return q == p;
22 
}
23 
 
24 
int
25 
assign_glob_ptr (void)
26 
{
27 
  int *q;
28 
  __builtin_prefetch ((q = ptr), 0, 0);
29 
  return q == ptr;
30 
}
31 
 
32 
int
33 
assign_arg_idx (int *p, int i)
34 
{
35 
  int j;
36 
  __builtin_prefetch (&p[j = i], 0, 0);
37 
  return j == i;
38 
}
39 
 
40 
int
41 
assign_glob_idx (void)
42 
{
43 
  int j;
44 
  __builtin_prefetch (&ptr[j = arrindex], 0, 0);
45 
  return j == arrindex;
46 
}
47 
 
48 
/* Check that pre/post increment/decrement within a prefetch argument are
49 
   evaluated.  */
50 
 
51 
int
52 
preinc_arg_ptr (int *p)
53 
{
54 
  int *q;
55 
  q = p + 1;
56 
  __builtin_prefetch (++p, 0, 0);
57 
  return p == q;
58 
}
59 
 
60 
int
61 
preinc_glob_ptr (void)
62 
{
63 
  int *q;
64 
  q = ptr + 1;
65 
  __builtin_prefetch (++ptr, 0, 0);
66 
  return ptr == q;
67 
}
68 
 
69 
int
70 
postinc_arg_ptr (int *p)
71 
{
72 
  int *q;
73 
  q = p + 1;
74 
  __builtin_prefetch (p++, 0, 0);
75 
  return p == q;
76 
}
77 
 
78 
int
79 
postinc_glob_ptr (void)
80 
{
81 
  int *q;
82 
  q = ptr + 1;
83 
  __builtin_prefetch (ptr++, 0, 0);
84 
  return ptr == q;
85 
}
86 
 
87 
int
88 
predec_arg_ptr (int *p)
89 
{
90 
  int *q;
91 
  q = p - 1;
92 
  __builtin_prefetch (--p, 0, 0);
93 
  return p == q;
94 
}
95 
 
96 
int
97 
predec_glob_ptr (void)
98 
{
99 
  int *q;
100 
  q = ptr - 1;
101 
  __builtin_prefetch (--ptr, 0, 0);
102 
  return ptr == q;
103 
}
104 
 
105 
int
106 
postdec_arg_ptr (int *p)
107 
{
108 
  int *q;
109 
  q = p - 1;
110 
  __builtin_prefetch (p--, 0, 0);
111 
  return p == q;
112 
}
113 
 
114 
int
115 
postdec_glob_ptr (void)
116 
{
117 
  int *q;
118 
  q = ptr - 1;
119 
  __builtin_prefetch (ptr--, 0, 0);
120 
  return ptr == q;
121 
}
122 
 
123 
int
124 
preinc_arg_idx (int *p, int i)
125 
{
126 
  int j = i + 1;
127 
  __builtin_prefetch (&p[++i], 0, 0);
128 
  return i == j;
129 
}
130 
 
131 
 
132 
int
133 
preinc_glob_idx (void)
134 
{
135 
  int j = arrindex + 1;
136 
  __builtin_prefetch (&ptr[++arrindex], 0, 0);
137 
  return arrindex == j;
138 
}
139 
 
140 
int
141 
postinc_arg_idx (int *p, int i)
142 
{
143 
  int j = i + 1;
144 
  __builtin_prefetch (&p[i++], 0, 0);
145 
  return i == j;
146 
}
147 
 
148 
int
149 
postinc_glob_idx (void)
150 
{
151 
  int j = arrindex + 1;
152 
  __builtin_prefetch (&ptr[arrindex++], 0, 0);
153 
  return arrindex == j;
154 
}
155 
 
156 
int
157 
predec_arg_idx (int *p, int i)
158 
{
159 
  int j = i - 1;
160 
  __builtin_prefetch (&p[--i], 0, 0);
161 
  return i == j;
162 
}
163 
 
164 
int
165 
predec_glob_idx (void)
166 
{
167 
  int j = arrindex - 1;
168 
  __builtin_prefetch (&ptr[--arrindex], 0, 0);
169 
  return arrindex == j;
170 
}
171 
 
172 
int
173 
postdec_arg_idx (int *p, int i)
174 
{
175 
  int j = i - 1;
176 
  __builtin_prefetch (&p[i--], 0, 0);
177 
  return i == j;
178 
}
179 
 
180 
int
181 
postdec_glob_idx (void)
182 
{
183 
  int j = arrindex - 1;
184 
  __builtin_prefetch (&ptr[arrindex--], 0, 0);
185 
  return arrindex == j;
186 
}
187 
 
188 
/* Check that function calls within the first prefetch argument are
189 
   evaluated.  */
190 
 
191 
int getptrcnt = 0;
192 
 
193 
int *
194 
getptr (int *p)
195 
{
196 
  getptrcnt++;
197 
  return p + 1;
198 
}
199 
 
200 
int
201 
funccall_arg_ptr (int *p)
202 
{
203 
  __builtin_prefetch (getptr (p), 0, 0);
204 
  return getptrcnt == 1;
205 
}
206 
 
207 
int getintcnt = 0;
208 
 
209 
int
210 
getint (int i)
211 
{
212 
  getintcnt++;
213 
  return i + 1;
214 
}
215 
 
216 
int
217 
funccall_arg_idx (int *p, int i)
218 
{
219 
  __builtin_prefetch (&p[getint (i)], 0, 0);
220 
  return getintcnt == 1;
221 
}
222 
 
223 
int
224 
main ()
225 
{
226 
  if (!assign_arg_ptr (ptr))
227 
    abort ();
228 
  if (!assign_glob_ptr ())
229 
    abort ();
230 
  if (!assign_arg_idx (ptr, 4))
231 
    abort ();
232 
  if (!assign_glob_idx ())
233 
    abort ();
234 
  if (!preinc_arg_ptr (ptr))
235 
    abort ();
236 
  if (!preinc_glob_ptr ())
237 
    abort ();
238 
  if (!postinc_arg_ptr (ptr))
239 
    abort ();
240 
  if (!postinc_glob_ptr ())
241 
    abort ();
242 
  if (!predec_arg_ptr (ptr))
243 
    abort ();
244 
  if (!predec_glob_ptr ())
245 
    abort ();
246 
  if (!postdec_arg_ptr (ptr))
247 
    abort ();
248 
  if (!postdec_glob_ptr ())
249 
    abort ();
250 
  if (!preinc_arg_idx (ptr, 3))
251 
    abort ();
252 
  if (!preinc_glob_idx ())
253 
    abort ();
254 
  if (!postinc_arg_idx (ptr, 3))
255 
    abort ();
256 
  if (!postinc_glob_idx ())
257 
    abort ();
258 
  if (!predec_arg_idx (ptr, 3))
259 
    abort ();
260 
  if (!predec_glob_idx ())
261 
    abort ();
262 
  if (!postdec_arg_idx (ptr, 3))
263 
    abort ();
264 
  if (!postdec_glob_idx ())
265 
    abort ();
266 
  if (!funccall_arg_ptr (ptr))
267 
    abort ();
268 
  if (!funccall_arg_idx (ptr, 3))
269 
    abort ();
270 
  exit (0);
271 
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.