1 // Make sure that __global__ functions are emitted along with correct
2 // annotations and are added to @llvm.used to prevent their elimination.
3 // REQUIRES: nvptx-registered-target
4 //
5 // RUN: %clang_cc1 %s -triple nvptx-unknown-unknown -fcuda-is-device -emit-llvm -o - | FileCheck %s
6
7 #include "Inputs/cuda.h"
8
9 // CHECK-LABEL: define void @device_function
10 extern "C"
device_function()11 __device__ void device_function() {}
12
13 // CHECK-LABEL: define void @global_function
14 extern "C"
global_function()15 __global__ void global_function() {
16 // CHECK: call void @device_function
17 device_function();
18 }
19
20 // Make sure host-instantiated kernels are preserved on device side.
templated_kernel(T param)21 template <typename T> __global__ void templated_kernel(T param) {}
22 // CHECK-LABEL: define weak_odr void @_Z16templated_kernelIiEvT_
host_function()23 void host_function() { templated_kernel<<<0,0>>>(0); }
24
25 // CHECK: !{{[0-9]+}} = !{void ()* @global_function, !"kernel", i32 1}
26 // CHECK: !{{[0-9]+}} = !{void (i32)* @_Z16templated_kernelIiEvT_, !"kernel", i32 1}
27