[flang][OpenMP] Replace OpenMPBlockConstruct with OmpBlockConstruct (#155872)

OpenMPBlockConstruct, somewhat confusingly, represents most but not all
block-associated constructs. It's derived from OmpBlockConstruct, as are
all the remaining block-associated constructs.

It does not correspond to any well-defined group of constructs. It's the
collection of constructs that don't have their own types (and those that
do have their own types do so for their own reasons).

Using the broader OmpBlockConstruct in type-based visitors won't cause
issues, because the specific overloads (for classes derived from it)
will always be preferred.

0 files changed, 0 insertions, 0 deletions