clang/test/OpenMP/teams_generic_loop_messages.cpp

   1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -verify -fopenmp \
   2 // RUN:  -Wuninitialized %s
   3
   4 void foo()
   5 {
   6   int i,j,k;
   7   int z;
   8
   9   // expected-error@+2 {{statement after '#pragma omp teams loop' must be a for loop}}
  10   #pragma omp teams loop bind(thread)
  11   i = 0;
  12
  13   // OpenMP 5.1 [2.22 Nesting of regions]
  14   //
  15   // A barrier region may not be closely nested inside a worksharing, loop,
  16   // task, taskloop, critical, ordered, atomic, or masked region.
  17
  18   // expected-error@+3 {{region cannot be closely nested inside 'teams loop' region}}
  19   #pragma omp teams loop bind(thread)
  20   for (i=0; i<1000; ++i) {
  21     #pragma omp barrier
  22   }
  23
  24   // A masked region may not be closely nested inside a worksharing, loop,
  25   // atomic, task, or taskloop region.
  26
  27   // expected-error@+3 {{region cannot be closely nested inside 'teams loop' region}}
  28   #pragma omp teams loop bind(thread)
  29   for (i=0; i<1000; ++i) {
  30     #pragma omp masked filter(2)
  31     { }
  32   }
  33
  34   // An ordered region that corresponds to an ordered construct without any
  35   // clause or with the threads or depend clause may not be closely nested
  36   // inside a critical, ordered, loop, atomic, task, or taskloop region.
  37
  38   // expected-error@+3 {{region cannot be closely nested inside 'teams loop' region; perhaps you forget to enclose 'omp ordered' directive into a for or a parallel for region with 'ordered' clause?}}
  39   #pragma omp teams loop bind(thread)
  40   for (i=0; i<1000; ++i) {
  41     #pragma omp ordered
  42     { }
  43   }
  44
  45   // expected-error@+3 {{region cannot be closely nested inside 'teams loop' region; perhaps you forget to enclose 'omp ordered' directive into a for or a parallel for region with 'ordered' clause?}}
  46   #pragma omp teams loop bind(thread)
  47   for (i=0; i<1000; ++i) {
  48     #pragma omp ordered threads
  49     { }
  50   }
  51
  52   // expected-error@+3 {{region cannot be closely nested inside 'teams loop' region; perhaps you forget to enclose 'omp ordered' directive into a for or a parallel for region with 'ordered' clause?}}
  53   #pragma omp teams loop bind(thread)
  54   for (i=0; i<1000; ++i) {
  55     #pragma omp ordered depend(source)
  56   }
  57
  58   // bind clause
  59
  60   // expected-error@+1 {{directive '#pragma omp teams loop' cannot contain more than one 'bind' clause}}
  61   #pragma omp teams loop bind(thread) bind(thread)
  62   for (i=0; i<1000; ++i) {
  63   }
  64
  65   // expected-error@+2 {{expected 'teams', 'parallel' or 'thread' in OpenMP clause 'bind'}}
  66   #pragma omp target
  67   #pragma omp teams loop bind(other)
  68   for (i=0; i<1000; ++i) {
  69   }
  70
  71   // collapse clause
  72
  73   // expected-error@+4 {{expected 2 for loops after '#pragma omp teams loop', but found only 1}}
  74   // expected-note@+1 {{as specified in 'collapse' clause}}
  75   #pragma omp teams loop collapse(2) bind(thread)
  76   for (i=0; i<1000; ++i)
  77     z = i+11;
  78
  79   // expected-error@+1 {{directive '#pragma omp teams loop' cannot contain more than one 'collapse' clause}}
  80   #pragma omp teams loop collapse(2) collapse(2) bind(thread)
  81   for (i=0; i<1000; ++i)
  82     for (j=0; j<1000; ++j)
  83       z = i+j+11;
  84
  85   // order clause
  86
  87   // expected-error@+1 {{expected 'concurrent' in OpenMP clause 'order'}}
  88   #pragma omp teams loop order(foo) bind(thread)
  89   for (i=0; i<1000; ++i)
  90     z = i+11;
  91
  92   // private clause
  93
  94   // expected-error@+1 {{use of undeclared identifier 'undef_var'}}
  95   #pragma omp teams loop private(undef_var) bind(thread)
  96   for (i=0; i<1000; ++i)
  97     z = i+11;
  98
  99   // lastprivate
 100
 101   // A list item may not appear in a lastprivate clause unless it is the loop
 102   // iteration variable of a loop that is associated with the construct.
 103
 104   // expected-error@+1 {{only loop iteration variables are allowed in 'lastprivate' clause in 'omp teams loop' directives}}
 105   #pragma omp teams loop lastprivate(z) bind(thread)
 106   for (i=0; i<1000; ++i) {
 107     z = i+11;
 108   }
 109
 110   // expected-error@+1 {{only loop iteration variables are allowed in 'lastprivate' clause in 'omp teams loop' directives}}
 111   #pragma omp teams loop lastprivate(k) collapse(2) bind(thread)
 112   for (i=0; i<1000; ++i)
 113     for (j=0; j<1000; ++j)
 114       for (k=0; k<1000; ++k)
 115         z = i+j+k+11;
 116
 117   // reduction
 118
 119   // expected-error@+1 {{use of undeclared identifier 'undef_var'}}
 120   #pragma omp teams loop reduction(+:undef_var) bind(thread)
 121   for (i=0; i<1000; ++i)
 122     z = i+11;
 123 }
 124
 125 template <typename T, int C>
 126 void templ_test(T t) {
 127   T i,z;
 128
 129   // expected-error@+4 {{expected 2 for loops after '#pragma omp teams loop', but found only 1}}
 130   // expected-note@+1 {{as specified in 'collapse' clause}}
 131   #pragma omp teams loop collapse(C) bind(thread)
 132   for (i=0; i<1000; ++i)
 133     z = i+11;
 134
 135   // expected-error@+1 {{only loop iteration variables are allowed in 'lastprivate' clause in 'omp teams loop' directives}}
 136   #pragma omp teams loop lastprivate(z) bind(thread)
 137   for (i=0; i<1000; ++i) {
 138     z = i+11;
 139   }
 140 }
 141
 142 void bar()
 143 {
 144   templ_test<int, 2>(16); // expected-note {{in instantiation of function template specialization 'templ_test<int, 2>' requested here}}
 145 }