[lld] [OpenMPIRBuilder] Remove wrapper function in `createTask`, `createTeams` (PR #67723)

[Johannes Doerfert via llvm-commits]

================
@@ -1736,26 +1750,20 @@ OpenMPIRBuilder::createTask(const LocationDescription &Loc,
 
     StaleCI->eraseFromParent();
 
-    // Emit the body for wrapper function
-    BasicBlock *WrapperEntryBB =
-        BasicBlock::Create(M.getContext(), "", WrapperFunc);
-    Builder.SetInsertPoint(WrapperEntryBB);
+    Builder.SetInsertPoint(TaskAllocaBB, TaskAllocaBB->begin());
     if (HasShareds) {
-      llvm::Value *Shareds =
-          Builder.CreateLoad(VoidPtr, WrapperFunc->getArg(1));
-      Builder.CreateCall(&OutlinedFn, {Shareds});
-    } else {
-      Builder.CreateCall(&OutlinedFn);
+      LoadInst *Shareds = Builder.CreateLoad(VoidPtr, OutlinedFn.getArg(1));
+      OutlinedFn.getArg(1)->replaceUsesWithIf(
+          Shareds, [Shareds](Use &U) { return U.getUser() != Shareds; });
+    }
+
+    while (!ToBeDeleted.empty()) {
+      ToBeDeleted.top()->eraseFromParent();
+      ToBeDeleted.pop();
----------------
jdoerfert wrote:

There is no need to pop anything, we have this code in other places already, why do we need to come up with new and exciting ways to do the same thing?

```
for (auto *TBD : ToBeDeleted)
  TBD->eraseFromParent
```

https://github.com/llvm/llvm-project/pull/67723