[flang] [llvm] [flang][openmp] Adds Parser and Semantic Support for Interop Construct, and Init and Use Clauses. (PR #120584)

[via llvm-commits]

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@@ -2163,6 +2163,30 @@ class UnparseVisitor {
     Walk(std::get<std::optional<std::list<Modifier>>>(x.t), ": ");
     Walk(std::get<OmpObjectList>(x.t));
   }
+  void Unparse(const OmpInteropPreference &x) { Walk(x.v, ","); }
+  void Unparse(const OmpInitClause &x) {
+    using Modifier = OmpInitClause::Modifier;
+    auto &modifiers{std::get<std::optional<std::list<Modifier>>>(x.t)};
+    bool is_type_start = true;
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swatheesh-mcw wrote:

Addressed the review comment in [#2370fb7](https://github.com/llvm/llvm-project/pull/120584/commits/2370fb7703a40f53b748168ae3e984cf4d39460e).

https://github.com/llvm/llvm-project/pull/120584