clang/test/SemaSYCL/kernel-attribute.cpp

   1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -fsycl-is-device -verify %s
   2
   3 // Only function templates
   4 [[clang::sycl_kernel]] int gv2 = 0; // expected-warning {{'sycl_kernel' attribute only applies to function templates}}
   5 __attribute__((sycl_kernel)) int gv3 = 0; // expected-warning {{'sycl_kernel' attribute only applies to function templates}}
   6
   7 __attribute__((sycl_kernel)) void foo(); // expected-warning {{'sycl_kernel' attribute only applies to function templates}}
   8 [[clang::sycl_kernel]] void foo1(); // expected-warning {{'sycl_kernel' attribute only applies to function templates}}
   9
  10 // Attribute takes no arguments
  11 template <typename T, typename A>
  12 __attribute__((sycl_kernel(1))) void foo(T P); // expected-error {{'sycl_kernel' attribute takes no arguments}}
  13 template <typename T, typename A, int I>
  14 [[clang::sycl_kernel(1)]] void foo1(T P);// expected-error {{'sycl_kernel' attribute takes no arguments}}
  15
  16 // At least two template parameters
  17 template <typename T>
  18 __attribute__((sycl_kernel)) void foo(T P); // expected-warning {{'sycl_kernel' attribute only applies to a function template with at least two template parameters}}
  19 template <typename T>
  20 [[clang::sycl_kernel]] void foo1(T P); // expected-warning {{'sycl_kernel' attribute only applies to a function template with at least two template parameters}}
  21
  22 // First two template parameters cannot be non-type template parameters
  23 template <typename T, int A>
  24 __attribute__((sycl_kernel)) void foo(T P); // expected-warning {{template parameter of a function template with the 'sycl_kernel' attribute cannot be a non-type template parameter}}
  25 template <int A, typename T>
  26 [[clang::sycl_kernel]] void foo1(T P); // expected-warning {{template parameter of a function template with the 'sycl_kernel' attribute cannot be a non-type template parameter}}
  27
  28 // Must return void
  29 template <typename T, typename A>
  30 __attribute__((sycl_kernel)) int foo(T P); // expected-warning {{function template with 'sycl_kernel' attribute must have a 'void' return type}}
  31 template <typename T, typename A>
  32 [[clang::sycl_kernel]] int foo1(T P); // expected-warning {{function template with 'sycl_kernel' attribute must have a 'void' return type}}
  33
  34 // Must take at least one argument
  35 template <typename T, typename A>
  36 __attribute__((sycl_kernel)) void foo(); // expected-warning {{function template with 'sycl_kernel' attribute must have a single parameter}}
  37 template <typename T, typename A>
  38 [[clang::sycl_kernel]] void foo1(T t, A a); // expected-warning {{function template with 'sycl_kernel' attribute must have a single parameter}}
  39
  40 // No diagnostics
  41 template <typename T, typename A>
  42 __attribute__((sycl_kernel)) void foo(T P);
  43 template <typename T, typename A, int I>
  44 [[clang::sycl_kernel]] void foo1(T P);