llvm-project

973fa983 - [flang][OpenMP] Parse iterators, add to MAP clause, TODO for lowering (#113167)

[flang][OpenMP] Parse iterators, add to MAP clause, TODO for lowering (#113167) Define `OmpIteratorSpecifier` and `OmpIteratorModifier` parser classes, and add parsing for them. Those are reusable between any clauses that use iterator modifiers. Add support for iterator modifiers to the MAP clause up to lowering, where a TODO message is emitted.