llvm-project/offload/test/api/omp_device_memory.c
Joseph Huber b26baf1779
[Offload] Make AMDGPU plugin handle empty allocation properly (#142383)
Summary:
`malloc(0)` and `free(nullptr)` are both defined by the standard but we
current trigger erros and assertions on them. Fix that so this works
with empty arguments.
2025-06-02 08:12:20 -05:00

34 lines
823 B
C

// RUN: %libomptarget-compile-run-and-check-generic
#include <omp.h>
#include <stdio.h>
#include <assert.h>
int main() {
const int N = 64;
int *device_ptr =
omp_alloc(N * sizeof(int), llvm_omp_target_device_mem_alloc);
#pragma omp target teams distribute parallel for is_device_ptr(device_ptr)
for (int i = 0; i < N; ++i) {
device_ptr[i] = 1;
}
int sum = 0;
#pragma omp target parallel for reduction(+ : sum) is_device_ptr(device_ptr)
for (int i = 0; i < N; ++i)
sum += device_ptr[i];
// CHECK: PASS
if (sum == N)
printf("PASS\n");
omp_free(device_ptr, llvm_omp_target_device_mem_alloc);
// Make sure this interface works.
void *ptr = omp_alloc(0, llvm_omp_target_device_mem_alloc);
assert(!ptr && "Ptr not (nullptr)");
omp_free(ptr, llvm_omp_target_device_mem_alloc);
}