[llvm-branch-commits] [OpenMP][MLIR] Extend record member map support for omp dialect to LLVM-IR (PR #82852)

[Sergio Afonso via llvm-branch-commits]

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@@ -2122,6 +2124,66 @@ void collectMapDataFromMapOperands(MapInfoData &mapData,
   }
 }
 
+static int getMapDataMemberIdx(MapInfoData &mapData,
+                               mlir::omp::MapInfoOp memberOp) {
+  auto *res = llvm::find(mapData.MapClause, memberOp);
+  assert(res != mapData.MapClause.end() &&
+         "MapInfoOp for member not found in MapData, cannot return index");
+  return std::distance(mapData.MapClause.begin(), res);
+}
+
+static mlir::omp::MapInfoOp
+getFirstOrLastMappedMemberPtr(mlir::omp::MapInfoOp mapInfo, bool first) {
+  mlir::DenseIntElementsAttr indexAttr = mapInfo.getMembersIndexAttr();
+
+  // Only 1 member has been mapped, we can return it.
+  if (indexAttr.size() == 1)
+    if (auto mapOp = mlir::dyn_cast<mlir::omp::MapInfoOp>(
+            mapInfo.getMembers()[0].getDefiningOp()))
+      return mapOp;
+
+  llvm::ArrayRef<int64_t> shape = indexAttr.getShapedType().getShape();
+  std::vector<size_t> indices(shape[0]);
----------------
skatrak wrote:

Nit: Wouldn't `SmallVector` be preferred in this case?
```suggestion
  llvm::SmallVector<size_t> indices(shape[0]);
```

https://github.com/llvm/llvm-project/pull/82852