// RUN: %clang_cc1 %s -triple x86_64-linux-unknown -fsyntax-only -o - -verify // RUN: %clang_cc1 %s -fcuda-is-device -triple nvptx -fsyntax-only -o - -verify #include "Inputs/cuda.h" // Check that we get an error if we try to call a __device__ function from a // module initializer. struct S { // expected-note@-1 {{candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 0 were provided}} // expected-note@-2 {{candidate constructor (the implicit move constructor) not viable: requires 1 argument, but 0 were provided}} __device__ S() {} // expected-note@-1 {{candidate constructor not viable: call to __device__ function from __host__ function}} }; S s; // expected-error@-1 {{no matching constructor for initialization of 'S'}} struct T { __host__ __device__ T() {} }; T t; // No error, this is OK. struct U { // expected-note@-1 {{candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const U' for 1st argument}} // expected-note@-2 {{candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'U' for 1st argument}} __host__ U() {} // expected-note@-1 {{candidate constructor not viable: requires 0 arguments, but 1 was provided}} __device__ U(int) {} // expected-note@-1 {{candidate constructor not viable: call to __device__ function from __host__ function}} }; U u(42); // expected-error@-1 {{no matching constructor for initialization of 'U'}} __device__ int device_fn() { return 42; } // expected-note@-1 {{candidate function not viable: call to __device__ function from __host__ function}} int n = device_fn(); // expected-error@-1 {{no matching function for call to 'device_fn'}} // Check host/device-based overloding resolution in global variable initializer. double pow(double, double); __device__ double pow(double, int); double X = pow(1.0, 1); __device__ double Y = pow(2.0, 2); // expected-error{{dynamic initialization is not supported for __device__, __constant__, __shared__, and __managed__ variables}} constexpr double cpow(double, double) { return 1.0; } constexpr __device__ double cpow(double, int) { return 2.0; } const double CX = cpow(1.0, 1); const __device__ double CY = cpow(2.0, 2); struct A { double pow(double, double); __device__ double pow(double, int); constexpr double cpow(double, double) const { return 1.0; } constexpr __device__ double cpow(double, int) const { return 1.0; } }; A a; double AX = a.pow(1.0, 1); __device__ double AY = a.pow(2.0, 2); // expected-error{{dynamic initialization is not supported for __device__, __constant__, __shared__, and __managed__ variables}} const A ca; const double CAX = ca.cpow(1.0, 1); const __device__ double CAY = ca.cpow(2.0, 2);