| // Tests cudaMemcpy and writes from kernel |
| // RUN: cat %s | clang-repl --cuda | FileCheck %s |
| |
| extern "C" int printf(const char*, ...); |
| |
| __global__ void test_func(int* value) { *value = 42; } |
| |
| int var; |
| int* devptr = nullptr; |
| printf("cudaMalloc: %d\n", cudaMalloc((void **) &devptr, sizeof(int))); |
| // CHECK: cudaMalloc: 0 |
| |
| test_func<<<1,1>>>(devptr); |
| printf("CUDA Error: %d\n", cudaGetLastError()); |
| // CHECK-NEXT: CUDA Error: 0 |
| |
| printf("cudaMemcpy: %d\n", cudaMemcpy(&var, devptr, sizeof(int), cudaMemcpyDeviceToHost)); |
| // CHECK-NEXT: cudaMemcpy: 0 |
| |
| printf("Value: %d\n", var); |
| // CHECK-NEXT: Value: 42 |
| |
| %quit |
