[clang] [CIR] Upstream handling for delete array (PR #165225)

[Henrich Lauko via cfe-commits]

================
@@ -4089,6 +4089,24 @@ def CIR_PrefetchOp : CIR_Op<"prefetch"> {
     }];
 }
 
+//===----------------------------------------------------------------------===//
+// DeleteArrayOp
+//===----------------------------------------------------------------------===//
+
+def CIR_DeleteArrayOp : CIR_Op<"delete.array"> {
+  let summary = "Delete address representing an array";
+  let description = [{
+    `cir.delete.array` operation deletes an array. For example, `delete[] ptr;`
----------------
xlauko wrote:

```suggestion
    `cir.delete_array` operation deletes an array. For example, `delete[] ptr;`
```

https://github.com/llvm/llvm-project/pull/165225