1 // RUN: %clang_cc1 -verify -fopenmp %s
2 // RUN: %clang_cc1 -verify -fopenmp -std=c++98 %s
3 // RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
4 
5 void foo() {
6 }
7 
8 bool foobool(int argc) {
9 #if __cplusplus >= 201103L
10 // expected-note@-2 4 {{declared here}}
11 #endif
12   return argc;
13 }
14 
15 struct S1; // expected-note {{declared here}}
16 
17 template <class T, typename S, int N, int ST> // expected-note {{declared here}}
18 T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}
19   #pragma omp target parallel for collapse // expected-error {{expected '(' after 'collapse'}}
20   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
21   #pragma omp target parallel for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
22   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
23   #pragma omp target parallel for collapse () // expected-error {{expected expression}}
24   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
25   // expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
26   // expected-error@+2 2 {{expression is not an integral constant expression}}
27   // expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
28   #pragma omp target parallel for collapse (argc
29   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
30   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
31   #pragma omp target parallel for collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
32   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
33   #pragma omp target parallel for collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp target parallel for' are ignored}}
34   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
35   #pragma omp target parallel for collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
36   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST]; // expected-error 2 {{expected 2 for loops after '#pragma omp target parallel for', but found only 1}}
37   // expected-error@+3 2 {{directive '#pragma omp target parallel for' cannot contain more than one 'collapse' clause}}
38   // expected-error@+2 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
39   // expected-error@+1 2 {{expression is not an integral constant expression}}
40   #pragma omp target parallel for collapse (foobool(argc)), collapse (true), collapse (-5)
41 #if __cplusplus >= 201103L
42 // expected-note@-2 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
43 #endif
44   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
45   #pragma omp target parallel for collapse (S) // expected-error {{'S' does not refer to a value}}
46   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
47 #if __cplusplus >= 201103L
48   // expected-error@+4 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
49 #else
50   // expected-error@+2 2 {{expression is not an integral constant expression}}
51 #endif
52   #pragma omp target parallel for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
53   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
54   #pragma omp target parallel for collapse (1)
55   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
56   #pragma omp target parallel for collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
57   for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
58   #pragma omp target parallel for collapse (2) // expected-note {{as specified in 'collapse' clause}}
59   foo(); // expected-error {{expected 2 for loops after '#pragma omp target parallel for'}}
60   return argc;
61 }
62 
63 int main(int argc, char **argv) {
64   #pragma omp target parallel for collapse // expected-error {{expected '(' after 'collapse'}}
65   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
66   #pragma omp target parallel for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
67   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
68   #pragma omp target parallel for collapse () // expected-error {{expected expression}}
69   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
70   #pragma omp target parallel for collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
71   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp target parallel for', but found only 1}}
72   #pragma omp target parallel for collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp target parallel for' are ignored}}  expected-note {{as specified in 'collapse' clause}}
73   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp target parallel for', but found only 1}}
74   #pragma omp target parallel for collapse (foobool(1) > 0 ? 1 : 2) // expected-error {{expression is not an integral constant expression}}
75 #if __cplusplus >= 201103L
76 // expected-note@-2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
77 #endif
78   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
79   // expected-error@+3 {{expression is not an integral constant expression}}
80   // expected-error@+2 2 {{directive '#pragma omp target parallel for' cannot contain more than one 'collapse' clause}}
81   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
82   #pragma omp target parallel for collapse (foobool(argc)), collapse (true), collapse (-5)
83 #if __cplusplus >= 201103L
84 // expected-note@-2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
85 #endif
86   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
87   #pragma omp target parallel for collapse (S1) // expected-error {{'S1' does not refer to a value}}
88   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
89 #if __cplusplus >= 201103L
90   // expected-error@+4 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
91 #else
92   // expected-error@+2 {{expression is not an integral constant expression}}
93 #endif
94   #pragma omp target parallel for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
95   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
96   // expected-error@+3 {{statement after '#pragma omp target parallel for' must be a for loop}}
97   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
98   #pragma omp target parallel for collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
99   foo();
100   #pragma omp target parallel for collapse (2) // expected-note {{as specified in 'collapse' clause}}
101   foo(); // expected-error {{expected 2 for loops after '#pragma omp target parallel for'}}
102   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
103   return tmain<int, char, 1, 0>(argc, argv);
104 }
105 
106