llvm/test/Bindings/OCaml/debuginfo.ml

   1 (* RUN: rm -rf %t && mkdir -p %t && cp %s %t/debuginfo.ml && cp %S/Utils/Testsuite.ml %t/Testsuite.ml
   2  * RUN: %ocamlc -g -w +A -package llvm.all_backends -package llvm.target -package llvm.analysis -package llvm.debuginfo -I %t/ -linkpkg %t/Testsuite.ml %t/debuginfo.ml -o %t/executable
   3  * RUN: %t/executable | FileCheck %s
   4  * RUN: %ocamlopt -g -w +A -package llvm.all_backends -package llvm.target -package llvm.analysis -package llvm.debuginfo -I %t/ -linkpkg %t/Testsuite.ml %t/debuginfo.ml -o %t/executable
   5  * RUN: %t/executable | FileCheck %s
   6  * XFAIL: vg_leak
   7  *)
   8
   9 open Testsuite
  10
  11 let context = Llvm.global_context ()
  12
  13 let filename = "di_test_file"
  14
  15 let directory = "di_test_dir"
  16
  17 let module_name = "di_test_module"
  18
  19 let null_metadata = Llvm_debuginfo.llmetadata_null ()
  20
  21 let string_of_metadata md =
  22   Llvm.string_of_llvalue (Llvm.metadata_as_value context md)
  23
  24 let stdout_metadata md = Printf.printf "%s\n" (string_of_metadata md)
  25
  26 let prepare_target llmod =
  27   Llvm_all_backends.initialize ();
  28   let triple = Llvm_target.Target.default_triple () in
  29   let lltarget = Llvm_target.Target.by_triple triple in
  30   let llmachine = Llvm_target.TargetMachine.create ~triple lltarget in
  31   let lldly =
  32     Llvm_target.DataLayout.as_string
  33       (Llvm_target.TargetMachine.data_layout llmachine)
  34   in
  35   let _ = Llvm.set_target_triple triple llmod in
  36   let _ = Llvm.set_data_layout lldly llmod in
  37   ()
  38
  39 let new_module () =
  40   let m = Llvm.create_module context module_name in
  41   let () = prepare_target m in
  42   let () = Llvm_debuginfo.set_is_new_dbg_info_format m true in
  43   insist (Llvm_debuginfo.is_new_dbg_info_format m);
  44   m
  45
  46 let test_get_module () =
  47   group "module_level_tests";
  48   let m = new_module () in
  49   let cur_ver = Llvm_debuginfo.debug_metadata_version () in
  50   insist (cur_ver > 0);
  51   let m_ver = Llvm_debuginfo.get_module_debug_metadata_version m in
  52   (* We haven't added any debug info to the module *)
  53   insist (m_ver = 0);
  54   let dibuilder = Llvm_debuginfo.dibuilder m in
  55   let di_version_key = "Debug Info Version" in
  56   let ver =
  57     Llvm.value_as_metadata @@ Llvm.const_int (Llvm.i32_type context) cur_ver
  58   in
  59   let () =
  60     Llvm.add_module_flag m Llvm.ModuleFlagBehavior.Warning di_version_key ver
  61   in
  62   let file_di =
  63     Llvm_debuginfo.dibuild_create_file dibuilder ~filename ~directory
  64   in
  65   stdout_metadata file_di;
  66   (* CHECK: [[FILE_PTR:<0x[0-9a-f]*>]] = !DIFile(filename: "di_test_file", directory: "di_test_dir")
  67   *)
  68   insist
  69     ( Llvm_debuginfo.di_file_get_filename ~file:file_di = filename
  70     && Llvm_debuginfo.di_file_get_directory ~file:file_di = directory );
  71   insist
  72     ( Llvm_debuginfo.get_metadata_kind file_di
  73     = Llvm_debuginfo.MetadataKind.DIFileMetadataKind );
  74   let cu_di =
  75     Llvm_debuginfo.dibuild_create_compile_unit dibuilder
  76       Llvm_debuginfo.DWARFSourceLanguageKind.C89 ~file_ref:file_di
  77       ~producer:"TestGen" ~is_optimized:false ~flags:"" ~runtime_ver:0
  78       ~split_name:"" Llvm_debuginfo.DWARFEmissionKind.LineTablesOnly ~dwoid:0
  79       ~di_inlining:false ~di_profiling:false ~sys_root:"" ~sdk:""
  80   in
  81   stdout_metadata cu_di;
  82   (* CHECK: [[CMPUNIT_PTR:<0x[0-9a-f]*>]] = distinct !DICompileUnit(language: DW_LANG_C89, file: [[FILE_PTR]], producer: "TestGen", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false)
  83   *)
  84   insist
  85     ( Llvm_debuginfo.get_metadata_kind cu_di
  86     = Llvm_debuginfo.MetadataKind.DICompileUnitMetadataKind );
  87   let m_di =
  88     Llvm_debuginfo.dibuild_create_module dibuilder ~parent_ref:cu_di
  89       ~name:module_name ~config_macros:"" ~include_path:"" ~sys_root:""
  90   in
  91   insist
  92     ( Llvm_debuginfo.get_metadata_kind m_di
  93     = Llvm_debuginfo.MetadataKind.DIModuleMetadataKind );
  94   insist (Llvm_debuginfo.get_module_debug_metadata_version m = cur_ver);
  95   stdout_metadata m_di;
  96   (* CHECK: [[MODULE_PTR:<0x[0-9a-f]*>]] = !DIModule(scope: null, name: "di_test_module")
  97   *)
  98   (m, dibuilder, file_di, m_di)
  99
 100 let flags_zero = Llvm_debuginfo.diflags_get Llvm_debuginfo.DIFlag.Zero
 101
 102 let int_ty_di bits dibuilder =
 103   Llvm_debuginfo.dibuild_create_basic_type dibuilder ~name:"int"
 104     ~size_in_bits:bits ~encoding:0x05
 105     (* llvm::dwarf::DW_ATE_signed *) flags_zero
 106
 107 let test_get_function m dibuilder file_di m_di =
 108   group "function_level_tests";
 109
 110   (* Create a function of type "void foo (int)". *)
 111   let int_ty_di = int_ty_di 32 dibuilder in
 112   stdout_metadata int_ty_di;
 113   (* CHECK: [[INT32_PTR:<0x[0-9a-f]*>]] = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
 114   *)
 115   let param_types = [| null_metadata; int_ty_di |] in
 116   let fty_di =
 117     Llvm_debuginfo.dibuild_create_subroutine_type dibuilder ~file:file_di
 118       ~param_types flags_zero
 119   in
 120   insist
 121     ( Llvm_debuginfo.get_metadata_kind fty_di
 122     = Llvm_debuginfo.MetadataKind.DISubroutineTypeMetadataKind );
 123   (* To be able to print and verify the type array of the subroutine type,
 124    * since we have no way to access it from fty_di, we build it again. *)
 125   let fty_di_args =
 126     Llvm_debuginfo.dibuild_get_or_create_type_array dibuilder ~data:param_types
 127   in
 128   stdout_metadata fty_di_args;
 129   (* CHECK: [[FARGS_PTR:<0x[0-9a-f]*>]] = !{null, [[INT32_PTR]]}
 130   *)
 131   stdout_metadata fty_di;
 132   (* CHECK: [[SBRTNTY_PTR:<0x[0-9a-f]*>]] = !DISubroutineType(types: [[FARGS_PTR]])
 133   *)
 134   (* Let's create the LLVM-IR function now. *)
 135   let name = "tfun" in
 136   let fty =
 137     Llvm.function_type (Llvm.void_type context) [| Llvm.i32_type context |]
 138   in
 139   let f = Llvm.define_function name fty m in
 140   let f_di =
 141     Llvm_debuginfo.dibuild_create_function dibuilder ~scope:m_di ~name
 142       ~linkage_name:name ~file:file_di ~line_no:10 ~ty:fty_di
 143       ~is_local_to_unit:false ~is_definition:true ~scope_line:10
 144       ~flags:flags_zero ~is_optimized:false
 145   in
 146   stdout_metadata f_di;
 147   (* CHECK: [[SBPRG_PTR:<0x[0-9a-f]*>]] = distinct !DISubprogram(name: "tfun", linkageName: "tfun", scope: [[MODULE_PTR]], file: [[FILE_PTR]], line: 10, type: [[SBRTNTY_PTR]], scopeLine: 10, spFlags: DISPFlagDefinition, unit: [[CMPUNIT_PTR]])
 148   *)
 149   Llvm_debuginfo.set_subprogram f f_di;
 150   ( match Llvm_debuginfo.get_subprogram f with
 151   | Some f_di' -> insist (f_di = f_di')
 152   | None -> insist false );
 153   insist
 154     ( Llvm_debuginfo.get_metadata_kind f_di
 155     = Llvm_debuginfo.MetadataKind.DISubprogramMetadataKind );
 156   insist (Llvm_debuginfo.di_subprogram_get_line f_di = 10);
 157   (fty, f, f_di)
 158
 159 let test_bbinstr fty f f_di file_di dibuilder =
 160   group "basic_block and instructions tests";
 161   (* Create this pattern:
 162    *   if (arg0 != 0) {
 163    *      foo(arg0);
 164    *   }
 165    *   return;
 166    *)
 167   let arg0 = (Llvm.params f).(0) in
 168   let builder = Llvm.builder_at_end context (Llvm.entry_block f) in
 169   let zero = Llvm.const_int (Llvm.i32_type context) 0 in
 170   let cmpi = Llvm.build_icmp Llvm.Icmp.Ne zero arg0 "cmpi" builder in
 171   let truebb = Llvm.append_block context "truebb" f in
 172   let falsebb = Llvm.append_block context "falsebb" f in
 173   let _ = Llvm.build_cond_br cmpi truebb falsebb builder in
 174   let foodecl = Llvm.declare_function "foo" fty (Llvm.global_parent f) in
 175   let _ =
 176     Llvm.position_at_end truebb builder;
 177     let scope =
 178       Llvm_debuginfo.dibuild_create_lexical_block dibuilder ~scope:f_di
 179         ~file:file_di ~line:9 ~column:4
 180     in
 181     let file_of_f_di = Llvm_debuginfo.di_scope_get_file ~scope:f_di in
 182     let file_of_scope = Llvm_debuginfo.di_scope_get_file ~scope in
 183     insist
 184       ( match (file_of_f_di, file_of_scope) with
 185       | Some file_of_f_di', Some file_of_scope' ->
 186           file_of_f_di' = file_di && file_of_scope' = file_di
 187       | _ -> false );
 188     let foocall = Llvm.build_call fty foodecl [| arg0 |] "" builder in
 189     let foocall_loc =
 190       Llvm_debuginfo.dibuild_create_debug_location context ~line:10 ~column:12
 191         ~scope
 192     in
 193     Llvm_debuginfo.instr_set_debug_loc foocall (Some foocall_loc);
 194     insist
 195       ( match Llvm_debuginfo.instr_get_debug_loc foocall with
 196       | Some foocall_loc' -> foocall_loc' = foocall_loc
 197       | None -> false );
 198     stdout_metadata scope;
 199     (* CHECK: [[BLOCK_PTR:<0x[0-9a-f]*>]] = distinct !DILexicalBlock(scope: [[SBPRG_PTR]], file: [[FILE_PTR]], line: 9, column: 4)
 200      *)
 201     stdout_metadata foocall_loc;
 202     (* CHECK: !DILocation(line: 10, column: 12, scope: [[BLOCK_PTR]])
 203      *)
 204     insist
 205       ( Llvm_debuginfo.di_location_get_scope ~location:foocall_loc = scope
 206       && Llvm_debuginfo.di_location_get_line ~location:foocall_loc = 10
 207       && Llvm_debuginfo.di_location_get_column ~location:foocall_loc = 12 );
 208     insist
 209       ( Llvm_debuginfo.get_metadata_kind foocall_loc
 210         = Llvm_debuginfo.MetadataKind.DILocationMetadataKind
 211       && Llvm_debuginfo.get_metadata_kind scope
 212          = Llvm_debuginfo.MetadataKind.DILexicalBlockMetadataKind );
 213     Llvm.build_br falsebb builder
 214   in
 215   let _ =
 216     Llvm.position_at_end falsebb builder;
 217     Llvm.build_ret_void builder
 218   in
 219   (* Printf.printf "%s\n" (Llvm.string_of_llmodule (Llvm.global_parent f)); *)
 220   ()
 221
 222 let test_global_variable_expression dibuilder f_di m_di =
 223   group "global variable expression tests";
 224   let cexpr_di =
 225     Llvm_debuginfo.dibuild_create_constant_value_expression dibuilder 0
 226   in
 227   stdout_metadata cexpr_di;
 228   (* CHECK: [[DICEXPR:!DIExpression\(DW_OP_constu, 0, DW_OP_stack_value\)]]
 229    *)
 230   insist
 231     ( Llvm_debuginfo.get_metadata_kind cexpr_di
 232     = Llvm_debuginfo.MetadataKind.DIExpressionMetadataKind );
 233   let ty = int_ty_di 64 dibuilder in
 234   stdout_metadata ty;
 235   (* CHECK: [[INT64TY_PTR:<0x[0-9a-f]*>]] = !DIBasicType(name: "int", size: 64, encoding: DW_ATE_signed)
 236    *)
 237   let gvexpr_di =
 238     Llvm_debuginfo.dibuild_create_global_variable_expression dibuilder
 239       ~scope:m_di ~name:"my_global" ~linkage:"" ~file:f_di ~line:5 ~ty
 240       ~is_local_to_unit:true ~expr:cexpr_di ~decl:null_metadata ~align_in_bits:0
 241   in
 242   insist
 243     ( Llvm_debuginfo.get_metadata_kind gvexpr_di
 244     = Llvm_debuginfo.MetadataKind.DIGlobalVariableExpressionMetadataKind );
 245   ( match
 246       Llvm_debuginfo.di_global_variable_expression_get_variable gvexpr_di
 247     with
 248   | Some gvexpr_var_di ->
 249       insist
 250         ( Llvm_debuginfo.get_metadata_kind gvexpr_var_di
 251         = Llvm_debuginfo.MetadataKind.DIGlobalVariableMetadataKind );
 252       stdout_metadata gvexpr_var_di
 253       (* CHECK: [[GV_PTR:<0x[0-9a-f]*>]] = distinct !DIGlobalVariable(name: "my_global", scope: [[MODULE_PTR]], file: [[FILE_PTR]], line: 5, type: [[INT64TY_PTR]], isLocal: true, isDefinition: true)
 254        *)
 255   | None -> insist false );
 256   stdout_metadata gvexpr_di;
 257   (* CHECK: [[GVEXP_PTR:<0x[0-9a-f]*>]] = !DIGlobalVariableExpression(var: [[GV_PTR]], expr: [[DICEXPR]])
 258    *)
 259   ()
 260
 261 let test_variables f dibuilder file_di fun_di =
 262   let entry_term = Option.get @@ (Llvm.block_terminator (Llvm.entry_block f)) in
 263   group "Local and parameter variable tests";
 264   let ty = int_ty_di 64 dibuilder in
 265   stdout_metadata ty;
 266   (* CHECK: [[INT64TY_PTR:<0x[0-9a-f]*>]] = !DIBasicType(name: "int", size: 64, encoding: DW_ATE_signed)
 267   *)
 268   let auto_var =
 269     Llvm_debuginfo.dibuild_create_auto_variable dibuilder ~scope:fun_di
 270       ~name:"my_local" ~file:file_di ~line:10 ~ty
 271       ~always_preserve:false flags_zero ~align_in_bits:0
 272   in
 273   stdout_metadata auto_var;
 274   (* CHECK: [[LOCAL_VAR_PTR:<0x[0-9a-f]*>]] = !DILocalVariable(name: "my_local", scope: <{{0x[0-9a-f]*}}>, file: <{{0x[0-9a-f]*}}>, line: 10, type: [[INT64TY_PTR]])
 275   *)
 276   let builder = Llvm.builder_before context entry_term in
 277   let all = Llvm.build_alloca (Llvm.i64_type context)  "my_alloca" builder in
 278   let scope =
 279     Llvm_debuginfo.dibuild_create_lexical_block dibuilder ~scope:fun_di
 280       ~file:file_di ~line:9 ~column:4
 281   in
 282   let location =
 283     Llvm_debuginfo.dibuild_create_debug_location
 284     context ~line:10 ~column:12 ~scope
 285   in
 286   let vdi = Llvm_debuginfo.dibuild_insert_declare_before dibuilder ~storage:all
 287     ~var_info:auto_var ~expr:(Llvm_debuginfo.dibuild_expression dibuilder [||])
 288     ~location ~instr:entry_term
 289   in
 290   let () = Printf.printf "%s\n" (Llvm.string_of_lldbgrecord vdi) in
 291   (* CHECK: dbg_declare(ptr %my_alloca, ![[#]], !DIExpression(), ![[#]])
 292   *)
 293   let arg0 = (Llvm.params f).(0) in
 294   let arg_var = Llvm_debuginfo.dibuild_create_parameter_variable dibuilder ~scope:fun_di
 295     ~name:"my_arg" ~argno:1 ~file:file_di ~line:10 ~ty
 296     ~always_preserve:false flags_zero
 297   in
 298   let argdi = Llvm_debuginfo.dibuild_insert_declare_before dibuilder ~storage:arg0
 299     ~var_info:arg_var ~expr:(Llvm_debuginfo.dibuild_expression dibuilder [||])
 300     ~location ~instr:entry_term
 301   in
 302   let () = Printf.printf "%s\n" (Llvm.string_of_lldbgrecord argdi) in
 303   (* CHECK: dbg_declare(i32 %0, ![[#]], !DIExpression(), ![[#]])
 304   *)
 305   ()
 306
 307 let test_types dibuilder file_di m_di =
 308   group "type tests";
 309   let namespace_di =
 310     Llvm_debuginfo.dibuild_create_namespace dibuilder ~parent_ref:m_di
 311       ~name:"NameSpace1" ~export_symbols:false
 312   in
 313   stdout_metadata namespace_di;
 314   (* CHECK: [[NAMESPACE_PTR:<0x[0-9a-f]*>]] = !DINamespace(name: "NameSpace1", scope: [[MODULE_PTR]])
 315    *)
 316   let int64_ty_di = int_ty_di 64 dibuilder in
 317   let structty_args = [| int64_ty_di; int64_ty_di; int64_ty_di |] in
 318   let struct_ty_di =
 319     Llvm_debuginfo.dibuild_create_struct_type dibuilder ~scope:namespace_di
 320       ~name:"StructType1" ~file:file_di ~line_number:20 ~size_in_bits:192
 321       ~align_in_bits:0 flags_zero ~derived_from:null_metadata
 322       ~elements:structty_args Llvm_debuginfo.DWARFSourceLanguageKind.C89
 323       ~vtable_holder:null_metadata ~unique_id:"StructType1"
 324   in
 325   (* Since there's no way to fetch the element types which is now
 326    * a type array, we build that again for checking. *)
 327   let structty_di_eltypes =
 328     Llvm_debuginfo.dibuild_get_or_create_type_array dibuilder
 329       ~data:structty_args
 330   in
 331   stdout_metadata structty_di_eltypes;
 332   (* CHECK: [[STRUCTELT_PTR:<0x[0-9a-f]*>]] = !{[[INT64TY_PTR]], [[INT64TY_PTR]], [[INT64TY_PTR]]}
 333    *)
 334   stdout_metadata struct_ty_di;
 335   (* CHECK: [[STRUCT_PTR:<0x[0-9a-f]*>]] = !DICompositeType(tag: DW_TAG_structure_type, name: "StructType1", scope: [[NAMESPACE_PTR]], file: [[FILE_PTR]], line: 20, size: 192, elements: [[STRUCTELT_PTR]], identifier: "StructType1")
 336    *)
 337   insist
 338     ( Llvm_debuginfo.get_metadata_kind struct_ty_di
 339     = Llvm_debuginfo.MetadataKind.DICompositeTypeMetadataKind );
 340   let structptr_di =
 341     Llvm_debuginfo.dibuild_create_pointer_type dibuilder
 342       ~pointee_ty:struct_ty_di ~size_in_bits:192 ~align_in_bits:0
 343       ~address_space:0 ~name:""
 344   in
 345   stdout_metadata structptr_di;
 346   (* CHECK: [[STRUCTPTR_PTR:<0x[0-9a-f]*>]] = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: [[STRUCT_PTR]], size: 192, dwarfAddressSpace: 0)
 347    *)
 348   insist
 349     ( Llvm_debuginfo.get_metadata_kind structptr_di
 350     = Llvm_debuginfo.MetadataKind.DIDerivedTypeMetadataKind );
 351   let enumerator1 =
 352     Llvm_debuginfo.dibuild_create_enumerator dibuilder ~name:"Test_A" ~value:0
 353       ~is_unsigned:true
 354   in
 355   stdout_metadata enumerator1;
 356   (* CHECK: [[ENUMERATOR1_PTR:<0x[0-9a-f]*>]] = !DIEnumerator(name: "Test_A", value: 0, isUnsigned: true)
 357    *)
 358   let enumerator2 =
 359     Llvm_debuginfo.dibuild_create_enumerator dibuilder ~name:"Test_B" ~value:1
 360       ~is_unsigned:true
 361   in
 362   stdout_metadata enumerator2;
 363   (* CHECK: [[ENUMERATOR2_PTR:<0x[0-9a-f]*>]] = !DIEnumerator(name: "Test_B", value: 1, isUnsigned: true)
 364    *)
 365   let enumerator3 =
 366     Llvm_debuginfo.dibuild_create_enumerator dibuilder ~name:"Test_C" ~value:2
 367       ~is_unsigned:true
 368   in
 369   insist
 370     ( Llvm_debuginfo.get_metadata_kind enumerator1
 371       = Llvm_debuginfo.MetadataKind.DIEnumeratorMetadataKind
 372     && Llvm_debuginfo.get_metadata_kind enumerator2
 373        = Llvm_debuginfo.MetadataKind.DIEnumeratorMetadataKind
 374     && Llvm_debuginfo.get_metadata_kind enumerator3
 375        = Llvm_debuginfo.MetadataKind.DIEnumeratorMetadataKind );
 376   stdout_metadata enumerator3;
 377   (* CHECK: [[ENUMERATOR3_PTR:<0x[0-9a-f]*>]] = !DIEnumerator(name: "Test_C", value: 2, isUnsigned: true)
 378    *)
 379   let elements = [| enumerator1; enumerator2; enumerator3 |] in
 380   let enumeration_ty_di =
 381     Llvm_debuginfo.dibuild_create_enumeration_type dibuilder ~scope:namespace_di
 382       ~name:"EnumTest" ~file:file_di ~line_number:1 ~size_in_bits:64
 383       ~align_in_bits:0 ~elements ~class_ty:int64_ty_di
 384   in
 385   let elements_arr =
 386     Llvm_debuginfo.dibuild_get_or_create_array dibuilder ~data:elements
 387   in
 388   stdout_metadata elements_arr;
 389   (* CHECK: [[ELEMENTS_PTR:<0x[0-9a-f]*>]] = !{[[ENUMERATOR1_PTR]], [[ENUMERATOR2_PTR]], [[ENUMERATOR3_PTR]]}
 390    *)
 391   stdout_metadata enumeration_ty_di;
 392   (* CHECK: [[ENUMERATION_PTR:<0x[0-9a-f]*>]] = !DICompositeType(tag: DW_TAG_enumeration_type, name: "EnumTest", scope: [[NAMESPACE_PTR]], file: [[FILE_PTR]], line: 1, baseType: [[INT64TY_PTR]], size: 64, elements: [[ELEMENTS_PTR]])
 393    *)
 394   insist
 395     ( Llvm_debuginfo.get_metadata_kind enumeration_ty_di
 396     = Llvm_debuginfo.MetadataKind.DICompositeTypeMetadataKind );
 397   let int32_ty_di = int_ty_di 32 dibuilder in
 398   let class_mem1 =
 399     Llvm_debuginfo.dibuild_create_member_type dibuilder ~scope:namespace_di
 400       ~name:"Field1" ~file:file_di ~line_number:3 ~size_in_bits:32
 401       ~align_in_bits:0 ~offset_in_bits:0 flags_zero ~ty:int32_ty_di
 402   in
 403   stdout_metadata class_mem1;
 404   (* CHECK: [[MEMB1_PTR:<0x[0-9a-f]*>]] = !DIDerivedType(tag: DW_TAG_member, name: "Field1", scope: [[NAMESPACE_PTR]], file: [[FILE_PTR]], line: 3, baseType: [[INT32_PTR]], size: 32)
 405    *)
 406   insist (Llvm_debuginfo.di_type_get_name class_mem1 = "Field1");
 407   insist (Llvm_debuginfo.di_type_get_line class_mem1 = 3);
 408   let class_mem2 =
 409     Llvm_debuginfo.dibuild_create_member_type dibuilder ~scope:namespace_di
 410       ~name:"Field2" ~file:file_di ~line_number:4 ~size_in_bits:64
 411       ~align_in_bits:8 ~offset_in_bits:32 flags_zero ~ty:int64_ty_di
 412   in
 413   stdout_metadata class_mem2;
 414   (* CHECK: [[MEMB2_PTR:<0x[0-9a-f]*>]] = !DIDerivedType(tag: DW_TAG_member, name: "Field2", scope: [[NAMESPACE_PTR]], file: [[FILE_PTR]], line: 4, baseType: [[INT64TY_PTR]], size: 64, align: 8, offset: 32)
 415    *)
 416   insist (Llvm_debuginfo.di_type_get_offset_in_bits class_mem2 = 32);
 417   insist (Llvm_debuginfo.di_type_get_size_in_bits class_mem2 = 64);
 418   insist (Llvm_debuginfo.di_type_get_align_in_bits class_mem2 = 8);
 419   let class_elements = [| class_mem1; class_mem2 |] in
 420   insist
 421     ( Llvm_debuginfo.get_metadata_kind class_mem1
 422       = Llvm_debuginfo.MetadataKind.DIDerivedTypeMetadataKind
 423     && Llvm_debuginfo.get_metadata_kind class_mem2
 424        = Llvm_debuginfo.MetadataKind.DIDerivedTypeMetadataKind );
 425   stdout_metadata
 426     (Llvm_debuginfo.dibuild_get_or_create_type_array dibuilder
 427        ~data:class_elements);
 428   (* CHECK: [[CLASSMEM_PTRS:<0x[0-9a-f]*>]] = !{[[MEMB1_PTR]], [[MEMB2_PTR]]}
 429    *)
 430   let classty_di =
 431     Llvm_debuginfo.dibuild_create_class_type dibuilder ~scope:namespace_di
 432       ~name:"MyClass" ~file:file_di ~line_number:1 ~size_in_bits:96
 433       ~align_in_bits:0 ~offset_in_bits:0 flags_zero ~derived_from:null_metadata
 434       ~elements:class_elements ~vtable_holder:null_metadata
 435       ~template_params_node:null_metadata ~unique_identifier:"MyClass"
 436   in
 437   stdout_metadata classty_di;
 438   (* [[CLASS_PTR:<0x[0-9a-f]*>]] = !DICompositeType(tag: DW_TAG_structure_type, name: "MyClass", scope: [[NAMESPACE_PTR]], file: [[FILE_PTR]], line: 1, size: 96, elements: [[CLASSMEM_PTRS]], identifier: "MyClass")
 439    *)
 440   insist
 441     ( Llvm_debuginfo.get_metadata_kind classty_di
 442     = Llvm_debuginfo.MetadataKind.DICompositeTypeMetadataKind );
 443   ()
 444
 445 let () =
 446   let m, dibuilder, file_di, m_di = test_get_module () in
 447   let fty, f, fun_di = test_get_function m dibuilder file_di m_di in
 448   let () = test_bbinstr fty f fun_di file_di dibuilder in
 449   let () = test_global_variable_expression dibuilder file_di m_di in
 450   let () = test_variables f dibuilder file_di fun_di in
 451   let () = test_types dibuilder file_di m_di in
 452   Llvm_debuginfo.dibuild_finalize dibuilder;
 453   ( match Llvm_analysis.verify_module m with
 454   | Some err ->
 455       prerr_endline ("Verification of module failed: " ^ err);
 456       exit_status := 1
 457   | None -> () );
 458   exit !exit_status