[clang] [CIR][OpenMP] Implement lowering for the 'if' clause for 'parallel' d… (PR #204999)

[Sergio Afonso via cfe-commits]

================
@@ -74,6 +74,12 @@ static mlir::Value emitMapInfoForVar(CIRGenFunction &cgf,
       /*partial_map=*/builder.getBoolAttr(false));
 }
 
+bool isDirectiveNameUnknown(llvm::omp::Directive directiveName) {
+  if (directiveName == llvm::omp::Directive::OMPD_unknown)
+    return true;
+  return false;
+}
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skatrak wrote:

Nit: I don't know how useful this function is, considering its simplicity, how self-descriptive it is and how unlikely other uses are. If you really want to keep it:
```suggestion
bool isDirectiveNameUnknown(llvm::omp::Directive directiveName) {
  return directiveName == llvm::omp::Directive::OMPD_unknown;
}
```

https://github.com/llvm/llvm-project/pull/204999