[OMPIRBuilder] - Handle dependencies in `createTarget` (#93977)

This patch handles dependencies specified by the `depend` clause on an
OpenMP target construct. It does this much the same way clang does it by
materializing an OpenMP `task` that is tagged with the dependencies.

The following functions are relevant to this patch -
1) `createTarget` - This function itself is largely unchanged except
that it now accepts a vector of `DependData` objects that it simply
forwards to `emitTargetCall`
2) `emitTargetCall` - This function has changed now to check if an outer
target-task needs to be materialized (i.e if `target` construct has
`nowait` or has `depend` clause). If yes, it calls `emitTargetTask` to
do all the heavy lifting for creating and dispatching the task.
3) `emitTargetTask` - Bulk of the change is here. See the large comment
explaining what it does at the beginning of this function

0 files changed, 0 insertions, 0 deletions