[clang] [llvm] [openmp] [OpenMP] Depobj optimisation (PR #91145)

[PEREIRA Romain via llvm-commits]

rpereira-dev wrote:

My bad, forgot to test codegen...  These also require adjustements
```
Failed Tests (8):
  Clang :: OpenMP/depobj_codegen.cpp
  Clang :: OpenMP/interop_irbuilder.cpp
  Clang :: OpenMP/target_enter_data_depend_codegen.cpp
  Clang :: OpenMP/target_exit_data_depend_codegen.cpp
  Clang :: OpenMP/target_update_depend_codegen.cpp
  Clang :: OpenMP/task_codegen.c
  Clang :: OpenMP/task_codegen.cpp
  Clang :: OpenMP/task_if_codegen.cpp
```

https://github.com/llvm/llvm-project/pull/91145