1 // RUN: %clang_cc1 -fsyntax-only -fopenmp=libiomp5 -verify %s
2 
3 // expected-error@+1 {{unexpected OpenMP directive '#pragma omp parallel for'}}
4 #pragma omp parallel for
5 
6 // expected-error@+1 {{unexpected OpenMP directive '#pragma omp parallel for'}}
7 #pragma omp parallel for foo
8 
test_no_clause()9 void test_no_clause() {
10   int i;
11 #pragma omp parallel for
12   for (i = 0; i < 16; ++i)
13     ;
14 
15 // expected-error@+2 {{statement after '#pragma omp parallel for' must be a for loop}}
16 #pragma omp parallel for
17   ++i;
18 }
19 
test_branch_protected_scope()20 void test_branch_protected_scope() {
21   int i = 0;
22 L1:
23   ++i;
24 
25   int x[24];
26 
27 #pragma omp parallel for
28   for (i = 0; i < 16; ++i) {
29     if (i == 5)
30       goto L1; // expected-error {{use of undeclared label 'L1'}}
31     else if (i == 6)
32       return; // expected-error {{cannot return from OpenMP region}}
33     else if (i == 7)
34       goto L2;
35     else if (i == 8) {
36     L2:
37       x[i]++;
38     }
39   }
40 
41   if (x[0] == 0)
42     goto L2; // expected-error {{use of undeclared label 'L2'}}
43   else if (x[1] == 1)
44     goto L1;
45 }
46 
test_invalid_clause()47 void test_invalid_clause() {
48   int i;
49 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
50 #pragma omp parallel for foo bar
51   for (i = 0; i < 16; ++i)
52     ;
53 }
54 
test_non_identifiers()55 void test_non_identifiers() {
56   int i, x;
57 
58 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
59 #pragma omp parallel for;
60   for (i = 0; i < 16; ++i)
61     ;
62 // expected-error@+2 {{unexpected OpenMP clause 'linear' in directive '#pragma omp parallel for'}}
63 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
64 #pragma omp parallel for linear(x);
65   for (i = 0; i < 16; ++i)
66     ;
67 
68 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
69 #pragma omp parallel for private(x);
70   for (i = 0; i < 16; ++i)
71     ;
72 
73 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
74 #pragma omp parallel for, private(x);
75   for (i = 0; i < 16; ++i)
76     ;
77 }
78 
79 extern int foo();
80 
test_collapse()81 void test_collapse() {
82   int i;
83 // expected-error@+1 {{expected '('}}
84 #pragma omp parallel for collapse
85   for (i = 0; i < 16; ++i)
86     ;
87 // expected-error@+1 {{expected expression}} expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
88 #pragma omp parallel for collapse(
89   for (i = 0; i < 16; ++i)
90     ;
91 // expected-error@+1 {{expected expression}}
92 #pragma omp parallel for collapse()
93   for (i = 0; i < 16; ++i)
94     ;
95 // expected-error@+1 {{expected expression}} expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
96 #pragma omp parallel for collapse(,
97   for (i = 0; i < 16; ++i)
98     ;
99 // expected-error@+1 {{expected expression}}  expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
100 #pragma omp parallel for collapse(, )
101   for (i = 0; i < 16; ++i)
102     ;
103 // expected-warning@+2 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
104 // expected-error@+1 {{expected '('}}
105 #pragma omp parallel for collapse 4)
106   for (i = 0; i < 16; ++i)
107     ;
108 // expected-error@+2 {{expected ')'}}
109 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
110 #pragma omp parallel for collapse(4
111   for (i = 0; i < 16; ++i)
112     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
113 // expected-error@+2 {{expected ')'}}
114 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
115 #pragma omp parallel for collapse(4,
116   for (i = 0; i < 16; ++i)
117     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
118 // expected-error@+2 {{expected ')'}}
119 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
120 #pragma omp parallel for collapse(4, )
121   for (i = 0; i < 16; ++i)
122     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
123 // expected-note@+1 {{as specified in 'collapse' clause}}
124 #pragma omp parallel for collapse(4)
125   for (i = 0; i < 16; ++i)
126     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
127 // expected-error@+2 {{expected ')'}}
128 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
129 #pragma omp parallel for collapse(4 4)
130   for (i = 0; i < 16; ++i)
131     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
132 // expected-error@+2 {{expected ')'}}
133 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
134 #pragma omp parallel for collapse(4, , 4)
135   for (i = 0; i < 16; ++i)
136     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
137 #pragma omp parallel for collapse(4)
138   for (int i1 = 0; i1 < 16; ++i1)
139     for (int i2 = 0; i2 < 16; ++i2)
140       for (int i3 = 0; i3 < 16; ++i3)
141         for (int i4 = 0; i4 < 16; ++i4)
142           foo();
143 // expected-error@+2 {{expected ')'}}
144 // expected-note@+1 {{to match this '('}} expected-note@+1 {{as specified in 'collapse' clause}}
145 #pragma omp parallel for collapse(4, 8)
146   for (i = 0; i < 16; ++i)
147     ; // expected-error {{expected 4 for loops after '#pragma omp parallel for', but found only 1}}
148 // expected-error@+1 {{expression is not an integer constant expression}}
149 #pragma omp parallel for collapse(2.5)
150   for (i = 0; i < 16; ++i)
151     ;
152 // expected-error@+1 {{expression is not an integer constant expression}}
153 #pragma omp parallel for collapse(foo())
154   for (i = 0; i < 16; ++i)
155     ;
156 // expected-error@+1 {{argument to 'collapse' clause must be a positive integer value}}
157 #pragma omp parallel for collapse(-5)
158   for (i = 0; i < 16; ++i)
159     ;
160 // expected-error@+1 {{argument to 'collapse' clause must be a positive integer value}}
161 #pragma omp parallel for collapse(0)
162   for (i = 0; i < 16; ++i)
163     ;
164 // expected-error@+1 {{argument to 'collapse' clause must be a positive integer value}}
165 #pragma omp parallel for collapse(5 - 5)
166   for (i = 0; i < 16; ++i)
167     ;
168 // expected-note@+1 {{defined as firstprivate}}
169 #pragma omp parallel for collapse(2) firstprivate(i)
170   for (i = 0; i < 16; ++i)
171 // expected-note@+1 {{variable with automatic storage duration is predetermined as private; perhaps you forget to enclose 'omp for' directive into a parallel or another task region?}}
172     for (int j = 0; j < 16; ++j)
173 // expected-error@+3 {{reduction variable must be shared}}
174 // expected-error@+2 {{private variable cannot be reduction}}
175 // expected-error@+1 {{region cannot be closely nested inside 'parallel for' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
176 #pragma omp for reduction(+ : i, j)
177       for (int k = 0; k < 16; ++k)
178         i += j;
179 }
180 
test_private()181 void test_private() {
182   int i;
183 // expected-error@+2 {{expected expression}}
184 // expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
185 #pragma omp parallel for private(
186   for (i = 0; i < 16; ++i)
187     ;
188 // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
189 // expected-error@+1 2 {{expected expression}}
190 #pragma omp parallel for private(,
191   for (i = 0; i < 16; ++i)
192     ;
193 // expected-error@+1 2 {{expected expression}}
194 #pragma omp parallel for private(, )
195   for (i = 0; i < 16; ++i)
196     ;
197 // expected-error@+1 {{expected expression}}
198 #pragma omp parallel for private()
199   for (i = 0; i < 16; ++i)
200     ;
201 // expected-error@+1 {{expected expression}}
202 #pragma omp parallel for private(int)
203   for (i = 0; i < 16; ++i)
204     ;
205 // expected-error@+1 {{expected variable name}}
206 #pragma omp parallel for private(0)
207   for (i = 0; i < 16; ++i)
208     ;
209 
210   int x, y, z;
211 #pragma omp parallel for private(x)
212   for (i = 0; i < 16; ++i)
213     ;
214 #pragma omp parallel for private(x, y)
215   for (i = 0; i < 16; ++i)
216     ;
217 #pragma omp parallel for private(x, y, z)
218   for (i = 0; i < 16; ++i) {
219     x = y * i + z;
220   }
221 }
222 
test_lastprivate()223 void test_lastprivate() {
224   int i;
225 // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
226 // expected-error@+1 {{expected expression}}
227 #pragma omp parallel for lastprivate(
228   for (i = 0; i < 16; ++i)
229     ;
230 
231 // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
232 // expected-error@+1 2 {{expected expression}}
233 #pragma omp parallel for lastprivate(,
234   for (i = 0; i < 16; ++i)
235     ;
236 // expected-error@+1 2 {{expected expression}}
237 #pragma omp parallel for lastprivate(, )
238   for (i = 0; i < 16; ++i)
239     ;
240 // expected-error@+1 {{expected expression}}
241 #pragma omp parallel for lastprivate()
242   for (i = 0; i < 16; ++i)
243     ;
244 // expected-error@+1 {{expected expression}}
245 #pragma omp parallel for lastprivate(int)
246   for (i = 0; i < 16; ++i)
247     ;
248 // expected-error@+1 {{expected variable name}}
249 #pragma omp parallel for lastprivate(0)
250   for (i = 0; i < 16; ++i)
251     ;
252 
253   int x, y, z;
254 #pragma omp parallel for lastprivate(x)
255   for (i = 0; i < 16; ++i)
256     ;
257 #pragma omp parallel for lastprivate(x, y)
258   for (i = 0; i < 16; ++i)
259     ;
260 #pragma omp parallel for lastprivate(x, y, z)
261   for (i = 0; i < 16; ++i)
262     ;
263 }
264 
test_firstprivate()265 void test_firstprivate() {
266   int i;
267 // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
268 // expected-error@+1 {{expected expression}}
269 #pragma omp parallel for firstprivate(
270   for (i = 0; i < 16; ++i)
271     ;
272 
273 // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
274 // expected-error@+1 2 {{expected expression}}
275 #pragma omp parallel for firstprivate(,
276   for (i = 0; i < 16; ++i)
277     ;
278 // expected-error@+1 2 {{expected expression}}
279 #pragma omp parallel for firstprivate(, )
280   for (i = 0; i < 16; ++i)
281     ;
282 // expected-error@+1 {{expected expression}}
283 #pragma omp parallel for firstprivate()
284   for (i = 0; i < 16; ++i)
285     ;
286 // expected-error@+1 {{expected expression}}
287 #pragma omp parallel for firstprivate(int)
288   for (i = 0; i < 16; ++i)
289     ;
290 // expected-error@+1 {{expected variable name}}
291 #pragma omp parallel for firstprivate(0)
292   for (i = 0; i < 16; ++i)
293     ;
294 
295   int x, y, z;
296 #pragma omp parallel for lastprivate(x) firstprivate(x)
297   for (i = 0; i < 16; ++i)
298     ;
299 #pragma omp parallel for lastprivate(x, y) firstprivate(x, y)
300   for (i = 0; i < 16; ++i)
301     ;
302 #pragma omp parallel for lastprivate(x, y, z) firstprivate(x, y, z)
303   for (i = 0; i < 16; ++i)
304     ;
305 }
306 
test_loop_messages()307 void test_loop_messages() {
308   float a[100], b[100], c[100];
309 // expected-error@+2 {{variable must be of integer or pointer type}}
310 #pragma omp parallel for
311   for (float fi = 0; fi < 10.0; fi++) {
312     c[(int)fi] = a[(int)fi] + b[(int)fi];
313   }
314 // expected-error@+2 {{variable must be of integer or pointer type}}
315 #pragma omp parallel for
316   for (double fi = 0; fi < 10.0; fi++) {
317     c[(int)fi] = a[(int)fi] + b[(int)fi];
318   }
319 }
320 
321