clang/test/OpenMP/loop_bind_messages.cpp


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

#ifndef HEADER
#define HEADER
// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -verify %s

#define NNN 50
int aaa[NNN];
int aaa2[NNN][NNN];

void parallel_loop() {
  #pragma omp parallel
  {
     #pragma omp loop
     for (int j = 0 ; j < NNN ; j++) {
       aaa[j] = j*NNN;
     }
   }

  #pragma omp parallel for
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'parallel for' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp parallel
  #pragma omp for nowait
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'for' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp parallel for
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp nothing
    #pragma omp loop
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp target teams distribute parallel for
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'target teams distribute parallel for' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp target parallel
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(parallel)
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp parallel for
  for (int i = 0; i < 100; ++i) {
    #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'parallel for' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
    for (int i = 0 ; i < NNN ; i++) {
      #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'loop' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
      for (int j = 0 ; j < NNN ; j++) {
        aaa[j] = j*NNN;
      }
    }
  }

  #pragma omp parallel
  {
     #pragma omp sections
     {
        for (int i = 0 ; i < NNN ; i++) {
          #pragma omp loop bind(parallel) // expected-error{{region cannot be closely nested inside 'sections' region; perhaps you forget to enclose 'omp loop' directive into a parallel region?}}
          for (int j = 0 ; j < NNN ; j++) {
            aaa2[i][j] = i+j;
          }
        }

        #pragma omp section
	{
          aaa[NNN-1] = NNN;
        }
     }
  }
}

void teams_loop() {
  int var1;
  int total = 0;

  #pragma omp teams
  {
     #pragma omp loop bind(teams)
     for (int j = 0 ; j < NNN ; j++) {
       aaa[j] = j*NNN;
     }

     #pragma omp loop bind(teams) collapse(2) private(var1)
     for (int i = 0 ; i < 3 ; i++) {
       for (int j = 0 ; j < NNN ; j++) {
         var1 += aaa[j];
       }
     }
   }

  #pragma omp target teams
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(teams)
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp target teams distribute parallel for
  for (int i = 0 ; i < NNN ; i++) {
    #pragma omp loop bind(teams) // expected-error{{region cannot be closely nested inside 'target teams distribute parallel for' region; perhaps you forget to enclose 'omp loop' directive into a teams region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp teams
  {
     #pragma omp loop bind(teams)
     for (int j = 0 ; j < NNN ; j++) {
       aaa[j] = j*NNN;
     }

     #pragma omp loop bind(teams) reduction(+:total) // expected-error{{'reduction' clause not allowed with '#pragma omp loop bind(teams)'}}
     for (int j = 0 ; j < NNN ; j++) {
       total+=aaa[j];
     }
   }

  #pragma omp teams num_teams(8) thread_limit(256)
  #pragma omp distribute parallel for dist_schedule(static, 1024) \
                                      schedule(static, 64)
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(teams) // expected-error{{'distribute parallel for' region; perhaps you forget to enclose 'omp loop' directive into a teams region?}}
    for (int j = 0; j < NNN; j++) {
      aaa2[i][j] = i+j;
    }
  }

  #pragma omp teams
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(thread)
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }

  #pragma omp teams loop
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }

  #pragma omp teams loop
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(teams) // expected-error{{region cannot be closely nested inside 'teams loop' region; perhaps you forget to enclose 'omp loop' directive into a teams region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }
}

void thread_loop() {
  #pragma omp parallel
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(thread)
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }

  #pragma omp teams
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(thread)
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }
}
  
void parallel_for_with_loop_teams_bind(){
  #pragma omp parallel for
  for (int i = 0; i < NNN; i++) {
    #pragma omp loop bind(teams) // expected-error{{region cannot be closely nested inside 'parallel for' region; perhaps you forget to enclose 'omp loop' directive into a teams region?}}
    for (int j = 0 ; j < NNN ; j++) {
      aaa[i] = i+i*NNN;
    }
  }
}

void orphan_loops() {
  #pragma omp loop  // expected-error{{expected 'bind' clause for 'loop' construct without an enclosing OpenMP construct}}
  for (int j = 0 ; j < NNN ; j++) {
    aaa[j] = j*NNN;
  }

  #pragma omp loop bind(parallel)
  for (int j = 0 ; j < NNN ; j++) {
    aaa[j] = j*NNN;
  }

  #pragma omp loop bind(teams)
  for (int i = 0; i < NNN; i++) {
    aaa[i] = i+i*NNN;
  }

  #pragma omp loop bind(thread)
  for (int i = 0; i < NNN; i++) {
    aaa[i] = i+i*NNN;
  }
}

int main(int argc, char *argv[]) {
  parallel_loop();
  teams_loop();
  thread_loop();
  parallel_for_with_loop_teams_bind();
  orphan_loops();
}

#endif