llvm-project

2fce8c9d - [flang][OpenMP] Frontend support for BEGIN/END METADIRECTIVE (#194402)

[flang][OpenMP] Frontend support for BEGIN/END METADIRECTIVE (#194402) This implements parsing of BEGIN/END METADIRECTIVE, plus a minimal semantic check for the association of a directive in a WHEN/OTHERWISE clauses. The same semantic checks for the context selectors apply here as in the case of a standalone METADIRECTIVE.