[OpenMP][MLIR] Descriptor explicit member map lowering changes (#113556)

This is one of 3 PRs in a PR stack that aims to add support for explicit
mapping of allocatable members in derived types.

The primary changes in this PR are the OpenMPToLLVMIRTranslation.cpp
changes, which are small and seek to alter the current member mapping to
add an additional map insertion for pointers. Effectively, if the member
is a pointer (currently indicated by having a varPtrPtr field) we add an
additional map for the pointer and then alter the subsequent mapping of
the member (the data) to utilise the member rather than the parents base
pointer. This appears to be necessary in certain cases when mapping
pointer data within record types to avoid segfaulting on device (due to
incorrect data mapping). In general this record type mapping may be
simplifiable in the future.

There are also additions of tests which should help to showcase the
affect of the changes above.

0 files changed, 0 insertions, 0 deletions