[llvm-branch-commits] [mlir] [MLIR][OpenMP] Document entry block argument-defining clauses (NFC) (PR #109811)

[Pranav Bhandarkar via llvm-branch-commits]

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@@ -285,7 +285,75 @@ argument's type:
   specific `mlir::Attribute` subclass) will be used instead.
   - Other attribute types will be represented with their `storageType`.
 - It will create `<Name>Operands` structure for each operation, which is an
-empty structure subclassing all operand structures defined for the corresponding `OpenMP_Op`'s clauses.
+empty structure subclassing all operand structures defined for the corresponding
+`OpenMP_Op`'s clauses.
+
+### Entry Block Argument-Defining Clauses
+
+Certain OpenMP clauses introduce in their MLIR representation mappings between
+outside values and entry block arguments for the region of the MLIR operation
+they are applied to. This enables, for example, the introduction of private
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bhandarkar-pranav wrote:

Please consider
```
This enables, for example, the introduction of private copies of the same underlying variable defined outside the MLIR operation the clause is attached to.
```

https://github.com/llvm/llvm-project/pull/109811