Index: clang/test/SemaCUDA/reference-to-kernel-fn.cu =================================================================== --- /dev/null +++ clang/test/SemaCUDA/reference-to-kernel-fn.cu @@ -0,0 +1,31 @@ +// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s +// RUN: %clang_cc1 -std=c++11 -fcuda-is-device -fsyntax-only -verify -DDEVICE %s + +// Check that we can reference (get a function pointer to) a __global__ +// function from the host side, but not the device side. (We don't yet support +// device-side kernel launches.) + +#include "Inputs/cuda.h" + +struct Dummy {}; + +__global__ void kernel() {} +// expected-note@-1 {{declared here}} +#ifdef DEVICE +// expected-note@-3 {{declared here}} +#endif + +typedef void (*fn_ptr_t)(); + +__host__ __device__ fn_ptr_t get_ptr_hd() { + return kernel; +#ifdef DEVICE + // expected-error@-2 {{reference to __global__ function}} +#endif +} +__host__ fn_ptr_t get_ptr_h() { + return kernel; +} +__device__ fn_ptr_t get_ptr_d() { + return kernel; // expected-error {{reference to __global__ function}} +}