26e492e134
HIP currently diagnose capture of this pointer in device lambda in host member functions. If this pointer points to managed memory, it can be used in both device and host functions. Under this situation, capturing this pointer in device lambda functions in host member functions is valid usage. Change the diagnostic about capturing this pointer to warning. Reviewed by: Artem Belevich Differential Revision: https://reviews.llvm.org/D108493
83 lines
2.9 KiB
Plaintext
83 lines
2.9 KiB
Plaintext
// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify=com %s
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// RUN: %clang_cc1 -std=c++17 -fsyntax-only -fcuda-is-device -verify=com,dev,warn %s
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// RUN: %clang_cc1 -std=c++17 -fsyntax-only -fcuda-is-device -verify=com,dev,warn \
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// RUN: -triple amdgcn-amd-amdhsa -target-cpu gfx906 -x hip %s
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// RUN: %clang_cc1 -std=c++17 -fsyntax-only -fcuda-is-device -verify=com,dev \
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// RUN: -Wno-gpu-maybe-wrong-side %s
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#include "Inputs/cuda.h"
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auto global_lambda = [] () { return 123; };
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template<class F>
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__global__ void kernel(F f) { f(); }
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// dev-note@-1 3{{called by 'kernel<(lambda}}
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// warn-note@-2 5{{called by 'kernel<(lambda}}
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__host__ __device__ void hd(int x);
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class A {
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int b;
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public:
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void test() {
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[=](){ hd(b); }();
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[&](){ hd(b); }();
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kernel<<<1,1>>>([](){ hd(0); });
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kernel<<<1,1>>>([=](){ hd(b); });
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// warn-warning@-1 {{capture host side class data member by this pointer in device or host device lambda function may result in invalid memory access if this pointer is not accessible on device side}}
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kernel<<<1,1>>>([&](){ hd(b); });
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// warn-warning@-1 {{capture host side class data member by this pointer in device or host device lambda function may result in invalid memory access if this pointer is not accessible on device side}}
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kernel<<<1,1>>>([&] __device__ (){ hd(b); });
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// warn-warning@-1 {{capture host side class data member by this pointer in device or host device lambda function may result in invalid memory access if this pointer is not accessible on device side}}
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kernel<<<1,1>>>([&](){
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auto f = [&]{ hd(b); };
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// warn-warning@-1 {{capture host side class data member by this pointer in device or host device lambda function may result in invalid memory access if this pointer is not accessible on device side}}
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f();
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});
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auto lambda1 = [this] __device__ { hd(this->b); };
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// warn-warning@-1 {{capture host side class data member by this pointer in device or host device lambda function may result in invalid memory access if this pointer is not accessible on device side}}
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kernel<<<1,1>>>(lambda1);
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}
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};
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int main(void) {
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auto lambda_kernel = [&]__global__(){};
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// com-error@-1 {{kernel function 'operator()' must be a free function or static member function}}
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int b;
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[&](){ hd(b); }();
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[=, &b](){ hd(b); }();
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kernel<<<1,1>>>(global_lambda);
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kernel<<<1,1>>>([](){ hd(0); });
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kernel<<<1,1>>>([=](){ hd(b); });
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kernel<<<1,1>>>([b](){ hd(b); });
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kernel<<<1,1>>>([&](){ hd(b); });
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// dev-error@-1 {{capture host variable 'b' by reference in device or host device lambda function}}
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kernel<<<1,1>>>([=, &b](){ hd(b); });
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// dev-error@-1 {{capture host variable 'b' by reference in device or host device lambda function}}
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kernel<<<1,1>>>([&, b](){ hd(b); });
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kernel<<<1,1>>>([&](){
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auto f = [&]{ hd(b); };
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// dev-error@-1 {{capture host variable 'b' by reference in device or host device lambda function}}
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f();
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});
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return 0;
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}
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