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1; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj < %s | llvm-dwarfdump -v - \2; RUN: | FileCheck --check-prefix=MONOLITHIC %s3; RUN: llc -mtriple=x86_64-unknown-linux-gnu -split-dwarf-file=foo.dwo -filetype=obj < %s \4; RUN: | llvm-dwarfdump -v - | FileCheck --check-prefix=SPLIT %s5 6; This basic test checks the emission of a DWARF v5 string offsets table in7; the split and non-split (monolithic) scenario.8;9; Constructed from the following source with10; clang -S -emit-llvm -gdwarf-511;12; enum E {a, b, c};13; E glob;14;15; In the non-split scenario, check the DW_AT_str_offsets_base attribute16; in .debug_abbrev.17; MONOLITHIC: .debug_abbrev contents:18; MONOLITHIC-NOT: contents:19; MONOLITHIC: DW_TAG_compile_unit20; MONOLITHIC-NOT: DW_TAG21; MONOLITHIC: DW_AT_str_offsets_base DW_FORM_sec_offset22 23; Check that indexed strings come out correctly and that the DW_str_offsets_base attribute24; is there and has the right value.25; MONOLITHIC: .debug_info contents:26; MONOLITHIC-NOT: contents:27; MONOLITHIC: DW_TAG_compile_unit28; MONOLITHIC-NOT: {{DW_TAG|NULL}}29; MONOLITHIC: DW_AT_producer [DW_FORM_strx1] (indexed (00000000) string = "clang{{.*}}")30; MONOLITHIC-NOT: {{DW_TAG|NULL}}31; MONOLITHIC: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)32; MONOLITHIC-NOT: {{DW_TAG|NULL}}33; MONOLITHIC: DW_AT_comp_dir [DW_FORM_strx1] (indexed (00000002) string = "/home/{{.*}}")34 35; Extract the string offsets from the .debug_str section so we can check that 36; they are referenced correctly in the .debug_str_offsets section.37; MONOLITHIC: .debug_str contents:38; MONOLITHIC-NEXT: 0x00000000:39; MONOLITHIC-NEXT: 0x[[STRING2:[0-9a-f]]]40; MONOLITHIC-NEXT: 0x[[STRING3:[0-9a-f]]]41; MONOLITHIC-NEXT: 0x[[STRING4:[0-9a-f]]]42 43; Verify that the .debug_str_offsets section is there and that it starts44; with an 8-byte header, followed by offsets into the .debug_str section.45; MONOLITHIC: .debug_str_offsets contents:46; MONOLITHIC-NEXT: Contribution size = 36, Format = DWARF32, Version = 547; MONOLITHIC-NEXT: 0x00000008: 0000000048; MONOLITHIC-NEXT: 0x0000000c: [[STRING2]]49; MONOLITHIC-NEXT: 0x00000010: [[STRING3]]50; MONOLITHIC-NEXT: 0x00000014: [[STRING4]]51 52; For split dwarf, verify that the skeleton unit has the DW_AT_str_offsets_base53; attribute and that it has the right value.54;55; SPLIT: .debug_info contents:56; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_skeleton57; SPLIT-NOT: contents:58; SPLIT: DW_TAG_skeleton_unit59; SPLIT-NOT: {{DW_TAG|contents:}}60; SPLIT: DW_AT_str_offsets_base [DW_FORM_sec_offset] (0x00000008)61; SPLIT: DW_AT_comp_dir [DW_FORM_strx1] (indexed (00000000) string = "/home/test")62; SPLIT: DW_AT_dwo_name [DW_FORM_strx1] (indexed (00000001) string = "foo.dwo")63 64; Check for the split CU in .debug_info.dwo.65; SPLIT: .debug_info.dwo contents:66; SPLIT-NEXT: 0x00000000: Compile Unit:{{.*}}DW_UT_split_compile67; SPLIT-NOT: contents:68; SPLIT: DW_TAG_compile_unit69;70; Check that a couple of indexed strings are displayed correctly and that71; they have the right format (DW_FORM_strx1).72; SPLIT-NOT: contents:73; SPLIT: DW_TAG_enumerator74; SPLIT-NOT: {{DW_TAG|NULL}}75; SPLIT: DW_AT_name [DW_FORM_strx1] (indexed (00000001) string = "a")76; SPLIT-NOT: contents:77; SPLIT: DW_TAG_enumerator78; SPLIT-NOT: {{DW_TAG|NULL}}79; SPLIT: DW_AT_name [DW_FORM_strx1] (indexed (00000002) string = "b")80;81; Extract the string offsets referenced in the main file by the skeleton unit.82; SPLIT: .debug_str contents:83; SPLIT-NEXT: 0x[[STRHOMETESTSPLIT:[0-9a-f]*]]: "/home/test"84; SPLIT-NEXT: 0x[[STRESPLIT:[0-9a-f]*]]: "E"85; SPLIT-NEXT: 0x[[STRGLOBSPLIT:[0-9a-f]*]]: "glob"86; SPLIT-NEXT: 0x[[STRFOODWOSPLIT:[0-9a-f]*]]: "foo.dwo"87;88; Extract the string offsets referenced in the .dwo file by the split unit.89; SPLIT: .debug_str.dwo contents:90; SPLIT-NEXT: 0x00000000:{{.*}}91; SPLIT-NEXT: 0x[[STRING2DWO:[0-9a-f]*]]{{.*}}92; SPLIT-NEXT: 0x[[STRING3DWO:[0-9a-f]*]]{{.*}}93;94; Check the string offsets sections in both the main and the .dwo files and95; verify that the extracted string offsets are referenced correctly. The96; sections should contain only the offsets of strings that are actually97; referenced by the debug info.98; SPLIT: .debug_str_offsets contents:99; SPLIT-NEXT: 0x00000000: Contribution size = 12, Format = DWARF32, Version = 5100; SPLIT-NEXT: 0x00000008: [[STRHOMETESTSPLIT]] "/home/test"101; SPLIT-NEXT: 0x0000000c: [[STRFOODWOSPLIT]] "foo.dwo"102; SPLIT-EMPTY:103 104; SPLIT: .debug_str_offsets.dwo contents:105; SPLIT-NEXT: 0x00000000: Contribution size = 36, Format = DWARF32, Version = 5106; SPLIT-NEXT: 0x00000008: 00000000{{.*}}107; SPLIT-NEXT: 0x0000000c: [[STRING2DWO]]{{.*}}108; SPLIT-NEXT: 0x00000010: [[STRING3DWO]]109 110@glob = global i32 0, align 4, !dbg !0111 112!llvm.dbg.cu = !{!2}113!llvm.module.flags = !{!11, !12, !13}114!llvm.ident = !{!14}115 116!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())117!1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !3, line: 3, type: !5, isLocal: false, isDefinition: true)118!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk 322415)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !10)119!3 = !DIFile(filename: "en.cpp", directory: "/home/test", checksumkind: CSK_MD5, checksum: "d96b2e2d618e550f0ddd0b6a49c98b02")120!4 = !{!5}121!5 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "E", file: !3, line: 1, size: 32, elements: !6, identifier: "_ZTS1E")122!6 = !{!7, !8, !9}123!7 = !DIEnumerator(name: "a", value: 0)124!8 = !DIEnumerator(name: "b", value: 1)125!9 = !DIEnumerator(name: "c", value: 2)126!10 = !{!0}127!11 = !{i32 2, !"Dwarf Version", i32 5}128!12 = !{i32 2, !"Debug Info Version", i32 3}129!13 = !{i32 1, !"wchar_size", i32 4}130!14 = !{!"clang version 7.0.0 (trunk 322415)"}131