[clang] [OpenMP] Add runtime selection for metadirective with non-constant conditions. (PR #192455)

[Alexey Bataev via cfe-commits]

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@@ -761,8 +761,36 @@ void StmtPrinter::PrintOMPExecutableDirective(OMPExecutableDirective *S,
 }
 
 void StmtPrinter::VisitOMPMetaDirective(OMPMetaDirective *Node) {
+  if (Node->getNumVariants() == 0) {
+    Indent() << "#pragma omp metadirective" << NL;
+    if (Stmt *If = Node->getIfStmt())
+      PrintStmt(If);
+  }
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alexey-bataev wrote:

```suggestion
    return;
  }
```

https://github.com/llvm/llvm-project/pull/192455