[clang] [CIR] Implement partial array destroy handling (PR #190834)

[Andy Kaylor via cfe-commits]

================
@@ -4610,32 +4632,41 @@ def CIR_ArrayCtor : CIR_Op<"array.ctor"> {
     Optional<CIR_AnyIntType>:$num_elements
   );
 
-  let regions = (region SizedRegion<1>:$body);
-  let assemblyFormat = [{
-    $addr (`,` $num_elements^)? `:` qualified(type($addr))
-    (`,` type($num_elements)^)? $body attr-dict
-  }];
+  let regions = (region SizedRegion<1>:$body, AnyRegion:$partial_dtor);
+  let hasCustomAssemblyFormat = 1;
----------------
andykaylor wrote:

I wasn't sure about this. I'd be happy to simplify it if I can. I'll try your suggestion.

https://github.com/llvm/llvm-project/pull/190834