49 lines
1.4 KiB
Plaintext
49 lines
1.4 KiB
Plaintext
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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// Check that it's OK for kernels to call HD functions that call device-only
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// functions.
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#include "Inputs/cuda.h"
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__device__ void device_fn(int) {}
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// expected-note@-1 2 {{declared here}}
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inline __host__ __device__ int hd1() {
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device_fn(0); // expected-error {{reference to __device__ function}}
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return 0;
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}
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inline __host__ __device__ int hd2() {
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// No error here because hd2 is only referenced from a kernel.
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device_fn(0);
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return 0;
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}
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inline __host__ __device__ void hd3(int) {
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device_fn(0); // expected-error {{reference to __device__ function 'device_fn'}}
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}
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inline __host__ __device__ void hd3(double) {}
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inline __host__ __device__ void hd4(int) {}
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inline __host__ __device__ void hd4(double) {
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device_fn(0); // No error; this function is never called.
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}
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__global__ void kernel(int) { hd2(); }
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template <typename T>
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void launch_kernel() {
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kernel<<<0, 0>>>(T());
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// Notice that these two diagnostics are different: Because the call to hd1
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// is not dependent on T, the call to hd1 comes from 'launch_kernel', while
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// the call to hd3, being dependent, comes from 'launch_kernel<int>'.
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hd1(); // expected-note {{called by 'launch_kernel<int>'}}
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hd3(T()); // expected-note {{called by 'launch_kernel<int>'}}
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}
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void host_fn() {
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launch_kernel<int>();
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// expected-note@-1 2 {{called by 'host_fn'}}
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}
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