[Mlir-commits] [mlir] [MLIR][OpenMP] Add `omp.private` op (PR #80955)

[Kareem Ergawy]

================
@@ -133,6 +133,95 @@ def DeclareTargetAttr : OpenMP_Attr<"DeclareTarget", "declaretarget"> {
   let assemblyFormat = "`<` struct(params) `>`";
 }
 
+//===----------------------------------------------------------------------===//
+// 2.19.4 Data-Sharing Attribute Clauses
+//===----------------------------------------------------------------------===//
+
+def DataSharingTypePrivate      : I32EnumAttrCase<"Private", 0, "private">;
+def DataSharingTypeFirstPrivate : I32EnumAttrCase<"FirstPrivate", 1, "firstprivate">;
+
+def DataSharingClauseType : I32EnumAttr<
+    "DataSharingClauseType",
+    "Type of a data-sharing clause",
+    [DataSharingTypePrivate, DataSharingTypeFirstPrivate]> {
+  let genSpecializedAttr = 0;
+  let cppNamespace = "::mlir::omp";
+}
+
+def DataSharingClauseTypeAttr : EnumAttr<
+    OpenMP_Dialect, DataSharingClauseType, "data_sharing_type"> {
+  let assemblyFormat = "`{` `type` `=` $value `}`";
+}
+
+def PrivateClauseOp : OpenMP_Op<"private", [
+    IsolatedFromAbove
+  ]> {
+  let summary = "Outline [first]private logic in a separate op.";
+  let description = [{
+    Using this operation, the dialect can model the data-sharing attributes of
+    `private` and `firstprivate` variables on the IR level. This means that of
+    "eagerly" privatizing variables in the frontend, we can instead model which
+    variables should be privatized and only materialze the privatization when
+    necessary; e.g. directly before lowering to LLVM IR.
----------------
ergawy wrote:

Done.

https://github.com/llvm/llvm-project/pull/80955