[all-commits] [llvm/llvm-project] 4ef658: [Clang][OpenMP] Fix mapping of structs to device (...

[Gheorghe-Teodor Bercea via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4ef6587715bec4520332528c4a71fe5a9ac10477
      https://github.com/llvm/llvm-project/commit/4ef6587715bec4520332528c4a71fe5a9ac10477
  Author: Gheorghe-Teodor Bercea <doru.bercea at amd.com>
  Date:   2023-12-18 (Mon, 18 Dec 2023)

  Changed paths:
    M clang/lib/CodeGen/CGOpenMPRuntime.cpp
    A clang/test/OpenMP/map_struct_ordering.cpp
    A openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp

  Log Message:
  -----------
  [Clang][OpenMP] Fix mapping of structs to device (#75642)

Fix mapping of structs to device.

The following example fails:

```
#include <stdio.h>
#include <stdlib.h>

struct Descriptor {
  int *datum;
  long int x;
  int xi;
  long int arr[1][30];
};

int main() {
  Descriptor dat = Descriptor();
  dat.datum = (int *)malloc(sizeof(int)*10);
  dat.xi = 3;
  dat.arr[0][0] = 1;

  #pragma omp target enter data map(to: dat.datum[:10]) map(to: dat)

  #pragma omp target
  {
    dat.xi = 4;
    dat.datum[dat.arr[0][0]] = dat.xi;
  }

  #pragma omp target exit data map(from: dat)

 return 0;
}
```

This is a rework of the previous attempt:
https://github.com/llvm/llvm-project/pull/72410