[clang] [llvm] [mlir] [OpenMP][Clang] Enable `ATTACH`-style maps for mappers. (PR #210213)

[Abhinav Gaba via llvm-commits]

================
@@ -2941,6 +2942,9 @@ class OpenMPIRBuilder {
     MapValuesArrayTy Sizes;
     MapFlagsArrayTy Types;
     MapNamesArrayTy Names;
+    /// True for entries that have an attach ptr, and thus an accompanying
+    /// ATTACH entry linking that ptr to its ptee.
----------------
abhinavgaba wrote:

Updated the comment to have more details. Thanks for the review, Andrew!

https://github.com/llvm/llvm-project/pull/210213