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diff --git a/test/Bindings/OCaml/target.ml b/test/Bindings/OCaml/target.ml
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+(* RUN: cp %s %T/target.ml
+ * RUN: %ocamlc -g -warn-error A -package llvm.target -package llvm.all_backends -linkpkg %T/target.ml -o %t
+ * RUN: %ocamlopt -g -warn-error A -package llvm.target -package llvm.all_backends -linkpkg %T/target.ml -o %t
+ * RUN: %t %t.bc
+ * XFAIL: vg_leak
+ *)
+
+(* Note: It takes several seconds for ocamlopt to link an executable with
+         libLLVMCore.a, so it's better to write a big test than a bunch of
+         little ones. *)
+
+open Llvm
+open Llvm_target
+
+let () = Llvm_all_backends.initialize ()
+
+let context = global_context ()
+let i32_type = Llvm.i32_type context
+let i64_type = Llvm.i64_type context
+
+(* Tiny unit test framework - really just to help find which line is busted *)
+let print_checkpoints = false
+
+let _ =
+  Printexc.record_backtrace true
+
+let assert_equal a b =
+  if a <> b then failwith "assert_equal"
+
+
+(*===-- Fixture -----------------------------------------------------------===*)
+
+let filename = Sys.argv.(1)
+let m = create_module context filename
+
+let target = Target.by_triple (Target.default_triple ())
+
+let machine = TargetMachine.create (Target.default_triple ()) target
+
+(*===-- Data Layout -------------------------------------------------------===*)
+
+let test_target_data () =
+  let module DL = DataLayout in
+  let layout = "e-p:32:32-f64:32:64-v64:32:64-v128:32:128-n32-S32" in
+  let dl     = DL.of_string layout in
+  let sty    = struct_type context [| i32_type; i64_type |] in
+
+  assert_equal (DL.as_string dl) layout;
+  assert_equal (DL.byte_order dl) Endian.Little;
+  assert_equal (DL.pointer_size dl) 4;
+  assert_equal (DL.intptr_type context dl) i32_type;
+  assert_equal (DL.qualified_pointer_size 0 dl) 4;
+  assert_equal (DL.qualified_intptr_type context 0 dl) i32_type;
+  assert_equal (DL.size_in_bits sty dl) (Int64.of_int 96);
+  assert_equal (DL.store_size sty dl) (Int64.of_int 12);
+  assert_equal (DL.abi_size sty dl) (Int64.of_int 12);
+  assert_equal (DL.stack_align sty dl) 4;
+  assert_equal (DL.preferred_align sty dl) 8;
+  assert_equal (DL.preferred_align_of_global (declare_global sty "g" m) dl) 8;
+  assert_equal (DL.element_at_offset sty (Int64.of_int 1) dl) 0;
+  assert_equal (DL.offset_of_element sty 1 dl) (Int64.of_int 4);
+
+  let pm = PassManager.create () in
+  ignore (DL.add_to_pass_manager pm dl)
+
+
+(*===-- Target ------------------------------------------------------------===*)
+
+let test_target () =
+  let module T = Target in
+  ignore (T.succ target);
+  ignore (T.name target);
+  ignore (T.description target);
+  ignore (T.has_jit target);
+  ignore (T.has_target_machine target);
+  ignore (T.has_asm_backend target)
+
+
+(*===-- Target Machine ----------------------------------------------------===*)
+
+let test_target_machine () =
+  let module TM = TargetMachine in
+  assert_equal (TM.target machine) target;
+  assert_equal (TM.triple machine) (Target.default_triple ());
+  assert_equal (TM.cpu machine) "";
+  assert_equal (TM.features machine) "";
+  ignore (TM.data_layout machine);
+  TM.set_verbose_asm true machine;
+  let pm = PassManager.create () in
+  TM.add_analysis_passes pm machine
+
+
+(*===-- Code Emission -----------------------------------------------------===*)
+
+let test_code_emission () =
+  TargetMachine.emit_to_file m CodeGenFileType.ObjectFile filename machine;
+  try
+    TargetMachine.emit_to_file m CodeGenFileType.ObjectFile
+                               "/nonexistent/file" machine;
+    failwith "must raise"
+  with Llvm_target.Error _ ->
+    ();
+
+  let buf = TargetMachine.emit_to_memory_buffer m CodeGenFileType.ObjectFile
+                                                machine in
+  Llvm.MemoryBuffer.dispose buf
+
+
+(*===-- Driver ------------------------------------------------------------===*)
+
+let _ =
+  test_target_data ();
+  test_target ();
+  test_target_machine ();
+  test_code_emission ();
+  dispose_module m