[llvm] [mlir] [OpenMP][MLIR] Hoist static `alloca`s emitted by private `init` regions to the allocation IP of the construct (PR #171597)

[Kareem Ergawy via llvm-commits]

================
@@ -1693,14 +1723,18 @@ OpenMPIRBuilder::InsertPointOrErrorTy OpenMPIRBuilder::createParallel(
       targetParallelCallback(this, OutlinedFn, OuterFn, OuterAllocaBlock, Ident,
                              IfCondition, NumThreads, PrivTID, PrivTIDAddr,
                              ThreadID, ToBeDeletedVec);
+
+
     };
+    OI.FixUpNonEntryAllocas = true;
   } else {
     // Generate OpenMP host runtime call
     OI.PostOutlineCB = [=, ToBeDeletedVec =
                                std::move(ToBeDeleted)](Function &OutlinedFn) {
       hostParallelCallback(this, OutlinedFn, OuterFn, Ident, IfCondition,
                            PrivTID, PrivTIDAddr, ToBeDeletedVec);
     };
+    // TODO: fix-up allocations on the host as well?
----------------
ergawy wrote:

Done in https://github.com/llvm/llvm-project/pull/174314

https://github.com/llvm/llvm-project/pull/171597