llvm-project/clang/test/CodeGenCUDA/ptx-kernels.cu

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// RUN: %clang_cc1 %s -triple ptx32-unknown-unknown -fcuda-is-device -emit-llvm -o - | FileCheck %s
#include "../SemaCUDA/cuda.h"
// CHECK: define ptx_device{{.*}}device_function
__device__ void device_function() {}
// CHECK: define ptx_kernel{{.*}}global_function
__global__ void global_function() {
// CHECK: call ptx_device{{.*}}device_function
device_function();
}