forked from OSchip/llvm-project
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
// RUN: %libomptarget-compile-run-and-check-aarch64-unknown-linux-gnu
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// RUN: %libomptarget-compile-run-and-check-powerpc64-ibm-linux-gnu
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// RUN: %libomptarget-compile-run-and-check-powerpc64le-ibm-linux-gnu
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// RUN: %libomptarget-compile-run-and-check-x86_64-pc-linux-gnu
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#include <stdio.h>
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#include <omp.h>
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// ---------------------------------------------------------------------------
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// Various definitions copied from OpenMP RTL
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extern void __tgt_register_requires(int64_t);
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// End of definitions copied from OpenMP RTL.
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// ---------------------------------------------------------------------------
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#pragma omp requires unified_shared_memory
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#define N 1024
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int main(int argc, char *argv[]) {
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int fails;
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void *host_alloc, *device_alloc;
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void *host_data, *device_data;
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int *alloc = (int *)malloc(N * sizeof(int));
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int data[N];
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// Manual registration of requires flags for Clang versions
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// that do not support requires.
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__tgt_register_requires(8);
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for (int i = 0; i < N; ++i) {
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alloc[i] = 10;
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data[i] = 1;
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}
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host_data = &data[0];
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host_alloc = &alloc[0];
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// implicit mapping of data
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#pragma omp target map(tofrom : device_data, device_alloc)
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{
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device_data = &data[0];
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device_alloc = &alloc[0];
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for (int i = 0; i < N; i++) {
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alloc[i] += 1;
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data[i] += 1;
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}
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}
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// CHECK: Address of alloc on device matches host address.
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if (device_alloc == host_alloc)
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printf("Address of alloc on device matches host address.\n");
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// CHECK: Address of data on device matches host address.
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if (device_data == host_data)
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printf("Address of data on device matches host address.\n");
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// On the host, check that the arrays have been updated.
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// CHECK: Alloc device values updated: Succeeded
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fails = 0;
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for (int i = 0; i < N; i++) {
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if (alloc[i] != 11)
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fails++;
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}
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printf("Alloc device values updated: %s\n",
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(fails == 0) ? "Succeeded" : "Failed");
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// CHECK: Data device values updated: Succeeded
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fails = 0;
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for (int i = 0; i < N; i++) {
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if (data[i] != 2)
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fails++;
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}
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printf("Data device values updated: %s\n",
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(fails == 0) ? "Succeeded" : "Failed");
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//
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// Test that updates on the host snd on the device are both visible.
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//
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// Update on the host.
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for (int i = 0; i < N; ++i) {
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alloc[i] += 1;
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data[i] += 1;
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}
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#pragma omp target
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{
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// CHECK: Alloc host values updated: Succeeded
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fails = 0;
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for (int i = 0; i < N; i++) {
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if (alloc[i] != 12)
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fails++;
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}
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printf("Alloc host values updated: %s\n",
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(fails == 0) ? "Succeeded" : "Failed");
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// CHECK: Data host values updated: Succeeded
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fails = 0;
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for (int i = 0; i < N; i++) {
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if (data[i] != 3)
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fails++;
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}
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printf("Data host values updated: %s\n",
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(fails == 0) ? "Succeeded" : "Failed");
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}
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free(alloc);
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printf("Done!\n");
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return 0;
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}
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