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      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 #if __cplusplus >= 201103L
      9 // expected-note@+2 4 {{declared here}}
     10 #endif
     11 bool foobool(int argc) {
     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
     20 #pragma omp teams
     21 #pragma omp distribute parallel for simd collapse // expected-error {{expected '(' after 'collapse'}}
     22   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     23 #pragma omp target
     24 #pragma omp teams
     25 #pragma omp distribute parallel for simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
     26   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     27 #pragma omp target
     28 #pragma omp teams
     29 #pragma omp distribute parallel for simd collapse () // expected-error {{expected expression}}
     30   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     31 #pragma omp target
     32 #pragma omp teams
     33   // expected-error@+3 {{expected ')'}} expected-note@+3 {{to match this '('}}
     34   // expected-error@+2 2 {{expression is not an integral constant expression}}
     35   // expected-note@+1 2 {{read of non-const variable 'argc' is not allowed in a constant expression}}
     36 #pragma omp distribute parallel for simd collapse (argc
     37   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     38 #pragma omp target
     39 #pragma omp teams
     40   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
     41 #pragma omp distribute parallel for simd collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
     42   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     43 #pragma omp target
     44 #pragma omp teams
     45 #pragma omp distribute parallel for simd collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp distribute parallel for simd' are ignored}}
     46   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     47 #pragma omp target
     48 #pragma omp teams
     49 #pragma omp distribute parallel for simd collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
     50   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 distribute parallel for simd', but found only 1}}
     51   // expected-error@+8 2 {{directive '#pragma omp distribute parallel for simd' cannot contain more than one 'collapse' clause}}
     52   // expected-error@+7 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
     53   // expected-error@+6 2 {{expression is not an integral constant expression}}
     54 #if __cplusplus >= 201103L
     55   // expected-note@+4 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
     56 #endif
     57 #pragma omp target
     58 #pragma omp teams
     59 #pragma omp distribute parallel for simd collapse (foobool(argc)), collapse (true), collapse (-5)
     60   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     61 #pragma omp target
     62 #pragma omp teams
     63 #pragma omp distribute parallel for simd collapse (S) // expected-error {{'S' does not refer to a value}}
     64   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     65 #if __cplusplus <= 199711L
     66   // expected-error@+6 2 {{expression is not an integral constant expression}}
     67 #else
     68   // expected-error@+4 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
     69 #endif
     70 #pragma omp target
     71 #pragma omp teams
     72 #pragma omp distribute parallel for simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
     73   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     74 #pragma omp target
     75 #pragma omp teams
     76 #pragma omp distribute parallel for simd collapse (1)
     77   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     78 #pragma omp target
     79 #pragma omp teams
     80 #pragma omp distribute parallel for simd collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
     81   for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
     82 #pragma omp target
     83 #pragma omp teams
     84 #pragma omp distribute parallel for simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
     85   foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute parallel for simd'}}
     86   return argc;
     87 }
     88 
     89 int main(int argc, char **argv) {
     90 #pragma omp target
     91 #pragma omp teams
     92 #pragma omp distribute parallel for simd collapse // expected-error {{expected '(' after 'collapse'}}
     93   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
     94 #pragma omp target
     95 #pragma omp teams
     96 #pragma omp distribute parallel for simd collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
     97   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
     98 #pragma omp target
     99 #pragma omp teams
    100 #pragma omp distribute parallel for simd collapse () // expected-error {{expected expression}}
    101   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    102 #pragma omp target
    103 #pragma omp teams
    104 #pragma omp distribute parallel for simd collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
    105   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 distribute parallel for simd', but found only 1}}
    106 #pragma omp target
    107 #pragma omp teams
    108 #pragma omp distribute parallel for simd collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp distribute parallel for simd' are ignored}}  expected-note {{as specified in 'collapse' clause}}
    109   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 distribute parallel for simd', but found only 1}}
    110   // expected-error@+6 {{expression is not an integral constant expression}}
    111 #if __cplusplus >= 201103L
    112   // expected-note@+4 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
    113 #endif
    114 #pragma omp target
    115 #pragma omp teams
    116 #pragma omp distribute parallel for simd collapse (foobool(1) > 0 ? 1 : 2)
    117   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    118   // expected-error@+8 {{expression is not an integral constant expression}}
    119 #if __cplusplus >= 201103L
    120   // expected-note@+6{{non-constexpr function 'foobool' cannot be used in a constant expression}}
    121 #endif
    122   // expected-error@+4 2 {{directive '#pragma omp distribute parallel for simd' cannot contain more than one 'collapse' clause}}
    123   // expected-error@+3 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
    124 #pragma omp target
    125 #pragma omp teams
    126 #pragma omp distribute parallel for simd collapse (foobool(argc)), collapse (true), collapse (-5)
    127   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    128 #pragma omp target
    129 #pragma omp teams
    130 #pragma omp distribute parallel for simd collapse (S1) // expected-error {{'S1' does not refer to a value}}
    131   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    132 #if __cplusplus <= 199711L
    133   // expected-error@+6 {{expression is not an integral constant expression}}
    134 #else
    135   // expected-error@+4 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
    136 #endif
    137 #pragma omp target
    138 #pragma omp teams
    139 #pragma omp distribute parallel for simd collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
    140   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
    141   // expected-error@+5 {{statement after '#pragma omp distribute parallel for simd' must be a for loop}}
    142   // expected-note@+3 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
    143 #pragma omp target
    144 #pragma omp teams
    145 #pragma omp distribute parallel for simd collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
    146   foo();
    147 #pragma omp target
    148 #pragma omp teams
    149 #pragma omp distribute parallel for simd collapse (2) // expected-note {{as specified in 'collapse' clause}}
    150   foo(); // expected-error {{expected 2 for loops after '#pragma omp distribute parallel for simd'}}
    151   // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
    152   return tmain<int, char, 1, 0>(argc, argv);
    153 }
    154 
    155