Adding dwarf for struct

[jcivlin]

expect

; ModuleID = '0x100__M.dbg_info'
source_filename = "/home/sol/work/git/move-100623/language/tools/move-mv-llvm-compiler/tests/dwarf-tests/dwarf-struct.move"

!llvm.dbg.cu = !{!0}
!struct.M__EmptyStruct = !{!2}
!struct.M__U64Struct = !{!8}
!struct.M__Combined = !{!14}
!struct.M__MyStruct = !{!20}

!0 = distinct !DICompileUnit(language: DW_LANG_Rust, file: !1, producer: "move-mv-llvm-compiler", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, sysroot: "/")
!1 = !DIFile(filename: "dwarf-struct.move", directory: "/home/sol/work/git/move-100623/language/tools/move-mv-llvm-compiler/tests/dwarf-tests")
!2 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "struct.M__EmptyStruct__ptr", baseType: !3, size: 64, align: 64, dwarfAddressSpace: 0)
!3 = !DICompositeType(tag: DW_TAG_structure_type, name: "struct.M__EmptyStruct", scope: !4, file: !1, line: 10, size: 8, align: 8, flags: DIFlagObjcClassComplete, elements: !5)
!4 = !DINamespace(name: "struct.M__EmptyStruct", scope: !1)
!5 = !{!6}
!6 = !DIDerivedType(tag: DW_TAG_member, name: "dummy_field", scope: !4, file: !1, line: 10, baseType: !7, size: 1, align: 8)
!7 = !DIBasicType(name: "bool", size: 8)
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "struct.M__U64Struct__ptr", baseType: !9, size: 64, align: 64, dwarfAddressSpace: 0)
!9 = !DICompositeType(tag: DW_TAG_structure_type, name: "struct.M__U64Struct", scope: !10, file: !1, line: 12, size: 64, align: 8, flags: DIFlagObjcClassComplete, elements: !11)
!10 = !DINamespace(name: "struct.M__U64Struct", scope: !1)
!11 = !{!12}
!12 = !DIDerivedType(tag: DW_TAG_member, name: "field_u64", scope: !10, file: !1, line: 12, baseType: !13, size: 64, align: 64)
!13 = !DIBasicType(name: "u64", size: 64)
!14 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "struct.M__Combined__ptr", baseType: !15, size: 64, align: 64, dwarfAddressSpace: 0)
!15 = !DICompositeType(tag: DW_TAG_structure_type, name: "struct.M__Combined", scope: !16, file: !1, line: 14, size: 128, align: 8, flags: DIFlagObjcClassComplete, elements: !17)
!16 = !DINamespace(name: "struct.M__Combined", scope: !1)
!17 = !{!18, !19}
!18 = !DIDerivedType(tag: DW_TAG_member, name: "field_combined_bool", scope: !16, file: !1, line: 14, baseType: !7, size: 1, align: 8)
!19 = !DIDerivedType(tag: DW_TAG_member, name: "field_combined_u64_struct", scope: !16, file: !1, line: 15, baseType: !9, size: 64, align: 64, offset: 8)
!20 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "struct.M__MyStruct__ptr", baseType: !21, size: 64, align: 64, dwarfAddressSpace: 0)
!21 = !DICompositeType(tag: DW_TAG_structure_type, name: "struct.M__MyStruct", scope: !22, file: !1, line: 2, size: 192, align: 8, flags: DIFlagObjcClassComplete, elements: !23)
!22 = !DINamespace(name: "struct.M__MyStruct", scope: !1)
!23 = !{!24, !26, !27, !28, !30}
!24 = !DIDerivedType(tag: DW_TAG_member, name: "field1_u32", scope: !22, file: !1, line: 2, baseType: !25, size: 32, align: 32)
!25 = !DIBasicType(name: "u32", size: 32)
!26 = !DIDerivedType(tag: DW_TAG_member, name: "field2_bool", scope: !22, file: !1, line: 3, baseType: !7, size: 1, align: 8, offset: 32)
!27 = !DIDerivedType(tag: DW_TAG_member, name: "field3_empty", scope: !22, file: !1, line: 4, baseType: !3, size: 8, align: 8, offset: 40)
!28 = !DIDerivedType(tag: DW_TAG_member, name: "field4_u8", scope: !22, file: !1, line: 5, baseType: !29, size: 8, align: 8, offset: 48)
!29 = !DIBasicType(name: "u8", size: 8)
!30 = !DIDerivedType(tag: DW_TAG_member, name: "field6_combined", scope: !22, file: !1, line: 6, baseType: !15, size: 128, align: 64, offset: 56)

Keep in mind for a struct with the fields defined (as struct) in another module it will not produce the correct type info. I'm working on this in the next PR.

[dmakarov]

Is this still a WIP? A suggestion: in the future instead of creating a PR with a title with a strange prefix WIP]], create a Draft Pull Request, then later change its status to the 'Ready for review', when it's ready for review.

[jcivlin]

Is this still a WIP?

It is ready for review. Some things may change later when I add dwarf for struct with elements from other modules, but it will be in another PR.

[jcivlin]

Close due to #402