llvm-project/clang/test/CodeGenCUDA/host-device-calls-host.cu

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// RUN: %clang_cc1 %s -triple nvptx-unknown-unknown -fcuda-is-device -Wno-cuda-compat -emit-llvm -o - | FileCheck %s
#include "Inputs/cuda.h"
extern "C"
void host_function() {}
// CHECK-LABEL: define void @hd_function_a
extern "C"
__host__ __device__ void hd_function_a() {
// CHECK: call void @host_function
host_function();
}
// CHECK: declare void @host_function
// CHECK-LABEL: define void @hd_function_b
extern "C"
__host__ __device__ void hd_function_b(bool b) { if (b) host_function(); }
// CHECK-LABEL: define void @device_function_b
extern "C"
__device__ void device_function_b() { hd_function_b(false); }
// CHECK-LABEL: define void @global_function
extern "C"
__global__ void global_function() {
// CHECK: call void @device_function_b
device_function_b();
}
// CHECK: !{{[0-9]+}} = !{void ()* @global_function, !"kernel", i32 1}