[Mlir-commits] [llvm] [mlir] [mlir][OpenMP] - Implement lowering from MLIR to LLVMIR for `private` clause on `target` constructs (PR #105471)

[Christian Ulmann]

================
@@ -3241,12 +3242,140 @@ convertOmpTarget(Operation &opInst, llvm::IRBuilderBase &builder,
   DataLayout dl = DataLayout(opInst.getParentOfType<ModuleOp>());
   SmallVector<Value> mapVars = targetOp.getMapVars();
   llvm::Function *llvmOutlinedFn = nullptr;
-
   // TODO: It can also be false if a compile-time constant `false` IF clause is
   // specified.
   bool isOffloadEntry =
       isTargetDevice || !ompBuilder->Config.TargetTriples.empty();
 
+  if (!targetOp.getPrivateVars().empty()) {
+    auto privateVars = targetOp.getPrivateVars();
+    auto privateSyms = targetOp.getPrivateSyms();
+    auto &firstTargetRegion = opInst.getRegion(0);
+    auto &firstTargetBlock = firstTargetRegion.front();
+    auto *regionArgsStart = firstTargetBlock.getArguments().begin();
+    auto *privArgsStart = regionArgsStart + targetOp.getMapVars().size();
+    auto *privArgsEnd = privArgsStart + targetOp.getPrivateVars().size();
+    BitVector blockArgsBV(firstTargetBlock.getNumArguments(), false);
+    struct omp::PrivateClauseOps newPrivateClauses;
----------------
Dinistro wrote:

```suggestion
   omp::PrivateClauseOps newPrivateClauses;
```
This is C style and not required in C++.

https://github.com/llvm/llvm-project/pull/105471