derek.holloway
7502bf64a4
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33 lines
1.6 KiB
Plaintext
33 lines
1.6 KiB
Plaintext
// RUN: %clang_cc1 -std=c++17 -triple nvptx64-nvidia-cuda -fsyntax-only \
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// RUN: -fcuda-is-device -verify %s
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// RUN: %clang_cc1 -std=c++17 -triple nvptx64-nvidia-cuda -fsyntax-only \
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// RUN: -verify %s
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#include "Inputs/cuda.h"
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template <typename T>
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struct S {
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__host__ __device__ S(T);
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};
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// A host+device deduction guide is allowed and participates in CTAD, but its
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// explicit target attributes are deprecated and will be rejected in a future
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// Clang version.
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template <typename T>
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__host__ __device__ S(T) -> S<T>; // expected-warning {{use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang}}
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__host__ __device__ void use_hd_guide() {
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S s(42); // uses the explicit __host__ __device__ deduction guide above
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}
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// CUDA/HIP target attributes on deduction guides are rejected when they make
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// the guide host-only, device-only, or a kernel.
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template <typename U>
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__host__ S(U) -> S<U>; // expected-error {{in CUDA/HIP, deduction guides may only be annotated with '__host__ __device__'; '__host__'-only, '__device__'-only, or '__global__' deduction guides are not allowed}}
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template <typename V>
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__device__ S(V) -> S<V>; // expected-error {{in CUDA/HIP, deduction guides may only be annotated with '__host__ __device__'; '__host__'-only, '__device__'-only, or '__global__' deduction guides are not allowed}}
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template <typename W>
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__global__ S(W) -> S<W>; // expected-error {{in CUDA/HIP, deduction guides may only be annotated with '__host__ __device__'; '__host__'-only, '__device__'-only, or '__global__' deduction guides are not allowed}}
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