[OCaml][Test] Fix and enable debuginfo.ml test

`get_or_create_type_array` was used on a non-type MDNode.
Add interface for `get_or_create_array` and use that instead.

Differential Revision: https://reviews.llvm.org/D99450

llvm/bindings/ocaml/debuginfo/debuginfo_ocaml.c

@@ -369,6 +369,14 @@ CAMLprim LLVMMetadataRef llvm_dibuild_get_or_create_type_array(value Builder,
                                            Wosize_val(Data));
 }
 
+CAMLprim LLVMMetadataRef llvm_dibuild_get_or_create_array(value Builder,
+                                                          value Data) {
+
+  return LLVMDIBuilderGetOrCreateArray(DIBuilder_val(Builder),
+                                       (LLVMMetadataRef *)Op_val(Data),
+                                       Wosize_val(Data));
+}
+
 CAMLprim LLVMMetadataRef llvm_dibuild_create_subroutine_type(
     value Builder, LLVMMetadataRef File, value ParameterTypes, value Flags) {
 

llvm/bindings/ocaml/debuginfo/llvm_debuginfo.ml

@@ -262,6 +262,10 @@ external dibuild_get_or_create_type_array :
   lldibuilder -> data:Llvm.llmetadata array -> Llvm.llmetadata
   = "llvm_dibuild_get_or_create_type_array"
 
+external dibuild_get_or_create_array :
+  lldibuilder -> data:Llvm.llmetadata array -> Llvm.llmetadata
+  = "llvm_dibuild_get_or_create_array"
+
 external dibuild_create_subroutine_type :
   lldibuilder ->
   file:Llvm.llmetadata ->

llvm/bindings/ocaml/debuginfo/llvm_debuginfo.mli

@@ -282,6 +282,11 @@ val dibuild_get_or_create_type_array :
 (** [dibuild_get_or_create_type_array] Create a type array.
     See LLVMDIBuilderGetOrCreateTypeArray. *)
 
+val dibuild_get_or_create_array :
+  lldibuilder -> data:Llvm.llmetadata array -> Llvm.llmetadata
+(** [dibuild_get_or_create_array] Create an array of DI Nodes.
+    See LLVMDIBuilderGetOrCreateArray. *)
+
 val dibuild_create_constant_value_expression :
   lldibuilder -> int -> Llvm.llmetadata
 (** [dibuild_create_constant_value_expression] Create a new descriptor for

llvm/test/Bindings/OCaml/debuginfo.ml

@@ -339,7 +339,7 @@ let test_types dibuilder file_di m_di =
       ~align_in_bits:0 ~elements ~class_ty:int64_ty_di
   in
   let elements_arr =
-    Llvm_debuginfo.dibuild_get_or_create_type_array dibuilder ~data:elements
+    Llvm_debuginfo.dibuild_get_or_create_array dibuilder ~data:elements
   in
   stdout_metadata elements_arr;
   (* CHECK: [[ELEMENTS_PTR:<0x[0-9a-f]*>]] = !{[[ENUMERATOR1_PTR]], [[ENUMERATOR2_PTR]], [[ENUMERATOR3_PTR]]}