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// Make sure that __global__ functions are emitted along with correct
// annotations and are added to @llvm.used to prevent their elimination.
// REQUIRES: nvptx-registered-target
//
// RUN: %clang_cc1 %s -triple nvptx-unknown-unknown -fcuda-is-device -emit-llvm -o - | FileCheck %s
#include "Inputs/cuda.h"
// CHECK-LABEL: define{{.*}} void @device_function
extern "C"
__device__ void device_function() {}
// CHECK-LABEL: define{{.*}} void @global_function
extern "C"
__global__ void global_function() {
// CHECK: call void @device_function
device_function();
}
// Make sure host-instantiated kernels are preserved on device side.
template <typename T> __global__ void templated_kernel(T param) {}
// CHECK-DAG: define{{.*}} void @_Z16templated_kernelIiEvT_(
namespace {
__global__ void anonymous_ns_kernel() {}
// CHECK-DAG: define{{.*}} void @_ZN12_GLOBAL__N_119anonymous_ns_kernelEv(
}
void host_function() {
templated_kernel<<<0, 0>>>(0);
anonymous_ns_kernel<<<0,0>>>();
}
// CHECK: !{{[0-9]+}} = !{void ()* @global_function, !"kernel", i32 1}
// CHECK: !{{[0-9]+}} = !{void (i32)* @_Z16templated_kernelIiEvT_, !"kernel", i32 1}
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