clang/test/OpenMP/parallel_for_messages.cpp

   1 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp -fopenmp-version=45 -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   2 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp -fopenmp-version=50 -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   3 // RUN: %clang_cc1 -verify=expected,omp51 -fopenmp -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   4
   5 // RUN: %clang_cc1 -verify=expected,omp45 -fopenmp-simd -fopenmp-version=45 -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   6 // RUN: %clang_cc1 -verify=expected,omp50 -fopenmp-simd -fopenmp-version=50 -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   7 // RUN: %clang_cc1 -verify=expected,omp51 -fopenmp-simd -ferror-limit 100 -std=c++11 -o - %s -Wuninitialized
   8
   9 void xxx(int argc) {
  10   int x; // expected-note {{initialize the variable 'x' to silence this warning}}
  11 #pragma omp parallel for
  12   for(int i = 0; i < 10; ++i)
  13   argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
  14 }
  15
  16 void foo() {
  17 }
  18
  19 #pragma omp parallel for // expected-error {{unexpected OpenMP directive '#pragma omp parallel for'}}
  20
  21 int main(int argc, char **argv) {
  22 #pragma omp parallel for { // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  23   for (int i = 0; i < argc; ++i)
  24     foo();
  25 #pragma omp parallel for ( // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  26   for (int i = 0; i < argc; ++i)
  27     foo();
  28 #pragma omp parallel for[ // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  29   for (int i = 0; i < argc; ++i)
  30     foo();
  31 #pragma omp parallel for] // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  32   for (int i = 0; i < argc; ++i)
  33     foo();
  34 #pragma omp parallel for) // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  35   for (int i = 0; i < argc; ++i)
  36     foo();
  37 #pragma omp parallel for } // expected-warning {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  38   for (int i = 0; i < argc; ++i)
  39     foo();
  40 #pragma omp parallel for
  41   for (int i = 0; i < argc; ++i)
  42     foo();
  43 // expected-warning@+1 {{extra tokens at the end of '#pragma omp parallel for' are ignored}}
  44 #pragma omp parallel for unknown()
  45   for (int i = 0; i < argc; ++i)
  46     foo();
  47 L1:
  48   for (int i = 0; i < argc; ++i)
  49     foo();
  50 #pragma omp parallel for
  51   for (int i = 0; i < argc; ++i)
  52     foo();
  53 #pragma omp parallel for
  54   for (int i = 0; i < argc; ++i) {
  55     goto L1; // expected-error {{use of undeclared label 'L1'}}
  56     argc++;
  57   }
  58
  59   for (int i = 0; i < 10; ++i) {
  60     switch (argc) {
  61     case (0):
  62 #pragma omp parallel for
  63       for (int i = 0; i < argc; ++i) {
  64         foo();
  65         break; // expected-error {{'break' statement cannot be used in OpenMP for loop}}
  66         continue;
  67       }
  68     default:
  69       break;
  70     }
  71   }
  72 #pragma omp parallel for default(none) // expected-note {{explicit data sharing attribute requested here}}
  73   for (int i = 0; i < 10; ++i)
  74     ++argc; // expected-error {{variable 'argc' must have explicitly specified data sharing attributes}}
  75
  76   goto L2; // expected-error {{use of undeclared label 'L2'}}
  77 #pragma omp parallel for
  78   for (int i = 0; i < argc; ++i)
  79   L2:
  80   foo();
  81 #pragma omp parallel for
  82   for (int i = 0; i < argc; ++i) {
  83     return 1; // expected-error {{cannot return from OpenMP region}}
  84   }
  85
  86   [[]] // expected-error {{an attribute list cannot appear here}}
  87 #pragma omp parallel for
  88       for (int n = 0; n < 100; ++n) {
  89   }
  90
  91   return 0;
  92 }
  93
  94 void test_ordered() {
  95 #pragma omp parallel for ordered ordered // expected-error {{directive '#pragma omp parallel for' cannot contain more than one 'ordered' clause}}
  96   for (int i = 0; i < 16; ++i)
  97     ;
  98 #pragma omp parallel for order // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} expected-error {{expected '(' after 'order'}}
  99   for (int i = 0; i < 10; ++i)
 100     ;
 101 #pragma omp parallel for order( // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} expected-error {{expected ')'}} expected-note {{to match this '('}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}} omp51-error {{expected 'concurrent' in OpenMP clause 'order'}}
 102   for (int i = 0; i < 10; ++i)
 103     ;
 104 #pragma omp parallel for order(none // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} expected-error {{expected ')'}} expected-note {{to match this '('}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}} omp51-error {{expected 'concurrent' in OpenMP clause 'order'}}
 105   for (int i = 0; i < 10; ++i)
 106     ;
 107 #pragma omp parallel for order(concurrent // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
 108   for (int i = 0; i < 10; ++i)
 109     ;
 110 #pragma omp parallel for order(concurrent) // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}}
 111   for (int i = 0; i < 10; ++i)
 112     ;
 113 #pragma omp parallel for order(unconstrained:) // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}} omp51-error {{expected 'concurrent' in OpenMP clause 'order'}}
 114   for (int i = 0; i < 10; ++i)
 115     ;
 116 #pragma omp parallel for order(reproducible:concurrent // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} expected-error {{expected ')'}} expected-note {{to match this '('}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}}
 117   for (int i = 0; i < 10; ++i)
 118     ;
 119 #pragma omp parallel for order(reproducible:concurrent) // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}}
 120   for (int i = 0; i < 10; ++i)
 121     ;
 122 #pragma omp parallel for order(unconstrained:concurrent) // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} omp50-error {{expected 'concurrent' in OpenMP clause 'order'}}
 123   for (int i = 0; i < 10; ++i)
 124     ;
 125 #pragma omp parallel for order(concurrent) order(concurrent) // omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} omp45-error {{unexpected OpenMP clause 'order' in directive '#pragma omp parallel for'}} omp51-error {{directive '#pragma omp parallel for' cannot contain more than one 'order' clause}}
 126   for (int i = 0; i < 10; ++i)
 127     ;
 128 }
 129