clang/test/OpenMP/for_collapse_messages.cpp

   1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 %s -Wuninitialized
   2 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++98 %s -Wuninitialized
   3 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -std=c++11 %s -Wuninitialized
   4 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp %s -Wuninitialized
   5 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++98 %s -Wuninitialized
   6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -std=c++11 %s -Wuninitialized
   7
   8 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 %s -Wuninitialized
   9 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++98 %s -Wuninitialized
  10 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -std=c++11 %s -Wuninitialized
  11 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd %s -Wuninitialized
  12 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++98 %s -Wuninitialized
  13 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -std=c++11 %s -Wuninitialized
  14
  15 // expected-note@* 0+{{declared here}}
  16
  17 void foo() {
  18 }
  19
  20 bool foobool(int argc) {
  21   return argc;
  22 }
  23
  24 struct S1;
  25
  26 template <class T, typename S, int N, int ST>
  27 T tmain(T argc, S **argv) {
  28   #pragma omp for collapse // expected-error {{expected '(' after 'collapse'}}
  29   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  30   #pragma omp for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
  31   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  32   #pragma omp for collapse () // expected-error {{expected expression}}
  33   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  34   // expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
  35   // expected-error@+1 2 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
  36   #pragma omp for collapse (argc
  37   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  38   // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
  39   #pragma omp for collapse (ST // expected-error {{expected ')'}} expected-note {{to match this '('}}
  40   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  41   #pragma omp for collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}
  42   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  43   #pragma omp for collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
  44   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 for', but found only 1}}
  45   // expected-error@+3 2 {{directive '#pragma omp for' cannot contain more than one 'collapse' clause}}
  46   // expected-error@+2 {{argument to 'collapse' clause must be a strictly positive integer value}}
  47   // expected-error@+1 2 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
  48   #pragma omp for collapse (foobool(argc)), collapse (true), collapse (-5)
  49   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  50   #pragma omp for collapse (S) // expected-error {{'S' does not refer to a value}}
  51   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  52 #if __cplusplus <= 199711L
  53   // expected-error@+4 2 {{integral constant expression}} expected-note@+4 0+{{constant expression}}
  54 #else
  55   // expected-error@+2 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
  56 #endif
  57   #pragma omp for collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
  58   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  59   #pragma omp for collapse (1)
  60   for (int i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  61   #pragma omp for collapse (N) // expected-error {{argument to 'collapse' clause must be a strictly positive integer value}}
  62   for (T i = ST; i < N; i++) argv[0][i] = argv[0][i] - argv[0][i-ST];
  63   #pragma omp for collapse (2) // expected-note {{as specified in 'collapse' clause}}
  64   foo(); // expected-error {{expected 2 for loops after '#pragma omp for'}}
  65   return argc;
  66 }
  67
  68 int main(int argc, char **argv) {
  69   #pragma omp for collapse // expected-error {{expected '(' after 'collapse'}}
  70   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  71   #pragma omp for collapse ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
  72   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  73   #pragma omp for collapse () // expected-error {{expected expression}}
  74   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  75   #pragma omp for collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
  76   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 for', but found only 1}}
  77   #pragma omp for collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp for' are ignored}}  expected-note {{as specified in 'collapse' clause}}
  78   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 for', but found only 1}}
  79   // expected-error@+1 {{integral constant expression}} expected-note@+1 0+{{constant expression}}
  80   #pragma omp for collapse (foobool(1) > 0 ? 1 : 2)
  81   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  82   // expected-error@+3 {{integral constant expression}} expected-note@+3 0+{{constant expression}}
  83   // expected-error@+2 2 {{directive '#pragma omp for' cannot contain more than one 'collapse' clause}}
  84   // expected-error@+1 {{argument to 'collapse' clause must be a strictly positive integer value}}
  85   #pragma omp for collapse (foobool(argc)), collapse (true), collapse (-5)
  86   for (int i = 4; i < 12; i++) argv[0][i] = argv[0][i] - argv[0][i-4];
  87   #pragma omp 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 <= 199711L
  90   // expected-error@+4 {{integral constant expression}} expected-note@+4 0+{{constant expression}}
  91 #else
  92   // expected-error@+2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
  93 #endif
  94   #pragma omp 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 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 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 for collapse (2) // expected-note {{as specified in 'collapse' clause}}
 101   foo(); // expected-error {{expected 2 for loops after '#pragma omp 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 void imperfectlyNestedLoops() {
 107 #pragma omp for collapse(2)      // expected-note {{as specified in 'collapse' clause}}
 108   for (int i = 0; i < 10; ++i) { // expected-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
 109     for (int j = 0; j < 10; ++j)
 110       ;
 111     for (int j = 0; j < 10; ++j)
 112       ;
 113   }
 114 #pragma omp for collapse(2)      // expected-note {{as specified in 'collapse' clause}}
 115   for (int i = 0; i < 10; ++i) { // expected-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
 116     {
 117       for (int j = 0; j < 10; ++j)
 118         ;
 119       for (int j = 0; j < 10; ++j)
 120         ;
 121     }
 122     {
 123       for (int j = 0; j < 10; ++j)
 124         ;
 125       for (int j = 0; j < 10; ++j)
 126         ;
 127     }
 128   }
 129 #pragma omp for collapse(2)      // omp45-note {{as specified in 'collapse' clause}}
 130   for (int i = 0; i < 10; ++i) { // omp45-error {{expected 2 for loops after '#pragma omp for', but found only 1}}
 131     int a, b, c;
 132     for (int j = 0; j < 10; ++j)
 133       ;
 134     {
 135       for (int j = 0; j < 10; ++j)
 136         ;
 137       for (int j = 0; j < 10; ++j)
 138         ;
 139     }
 140   }
 141 }