[clang] [CIR] Add support for array cleanups (PR #150499)

[Henrich Lauko via cfe-commits]

================
@@ -2272,6 +2272,23 @@ def CIR_ArrayCtor : CIR_ArrayInitDestroy<"array.ctor"> {
   }];
 }
 
+def CIR_ArrayDtor : CIR_ArrayInitDestroy<"array.dtor"> {
+  let summary = "Destroy array elements with C++ dtors";
+  let description = [{
+    Destroy each array element using the same C++ destructor. This
+    operation has one region, with one single block. The block has an
+    incoming argument for the current array index to initialize.
+
+    ```mlir
----------------
xlauko wrote:

```suggestion
    incoming argument for the current array index to initialize.

    Example:
    
    ```mlir
```

https://github.com/llvm/llvm-project/pull/150499