clang/test/SemaOpenACC/compute-construct-num_gangs-clause.c

   1 // RUN: %clang_cc1 %s -fopenacc -verify
   2
   3 short getS();
   4 void Test() {
   5 #pragma acc kernels num_gangs(1)
   6   while(1);
   7
   8   // expected-error@+1{{OpenACC 'num_gangs' clause is not valid on 'serial' directive}}
   9 #pragma acc serial num_gangs(1)
  10   while(1);
  11
  12 #pragma acc parallel num_gangs(1)
  13   while(1);
  14
  15   // expected-error@+2{{OpenACC 'num_gangs' clause cannot appear more than once on a 'kernels' directive}}
  16   // expected-note@+1{{previous clause is here}}
  17 #pragma acc kernels num_gangs(1) num_gangs(2)
  18   while(1);
  19
  20   // expected-error@+2{{OpenACC 'num_gangs' clause cannot appear more than once on a 'parallel' directive}}
  21   // expected-note@+1{{previous clause is here}}
  22 #pragma acc parallel num_gangs(1) num_gangs(2)
  23   while(1);
  24
  25   // expected-error@+1{{too many integer expression arguments provided to OpenACC 'num_gangs' clause: 'kernels' directive expects maximum of 1, 2 were provided}}
  26 #pragma acc kernels num_gangs(1, getS())
  27   while(1);
  28
  29   // expected-error@+1{{OpenACC 'num_gangs' clause is not valid on 'serial' directive}}
  30 #pragma acc serial num_gangs(1, getS())
  31   while(1);
  32 #pragma acc parallel num_gangs(1, getS())
  33   while(1);
  34
  35   struct NotConvertible{} NC;
  36   // expected-error@+1{{OpenACC clause 'num_gangs' requires expression of integer type ('struct NotConvertible' invalid)}}
  37 #pragma acc parallel num_gangs(NC)
  38   while(1);
  39
  40   // expected-error@+1{{OpenACC clause 'num_gangs' requires expression of integer type ('struct NotConvertible' invalid)}}
  41 #pragma acc parallel num_gangs(1, NC)
  42   while(1);
  43
  44   // expected-error@+1{{OpenACC clause 'num_gangs' requires expression of integer type ('struct NotConvertible' invalid)}}
  45 #pragma acc parallel num_gangs(NC, 1)
  46   while(1);
  47
  48 #pragma acc parallel num_gangs(getS(), 1, getS())
  49   while(1);
  50
  51   // expected-error@+1{{too many integer expression arguments provided to OpenACC 'num_gangs' clause: 'parallel' directive expects maximum of 3, 4 were provided}}
  52 #pragma acc parallel num_gangs(getS(), 1, getS(), 1)
  53   while(1);
  54
  55   // expected-error@+1{{OpenACC 'num_gangs' clause is not valid on 'loop' directive}}
  56 #pragma acc loop num_gangs(1)
  57   for(int i = 5; i < 10;++i);
  58 }