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