1; RUN: llc -dwarf-version=4 -generate-type-units \ 2; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \ 3; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-4 4 5; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \ 6; RUN: -dwarf-version=4 -generate-type-units \ 7; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \ 8; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-4 9; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-4 10 11; RUN: llc -dwarf-version=5 -generate-type-units \ 12; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \ 13; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-5 14 15; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \ 16; RUN: -dwarf-version=5 -generate-type-units \ 17; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \ 18; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-5 19; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-5 20 21; Looking for DWARF headers to be generated correctly. 22; There are 8 variants with 5 formats: v4 CU, v4 TU, v5 normal/partial CU, 23; v5 skeleton/split CU, v5 normal/split TU. Some v5 variants differ only 24; in the unit_type code, and the skeleton/split CU differs from normal/partial 25; by having one extra field (dwo_id). 26; (v2 thru v4 CUs are all the same, and TUs were invented in v4, 27; so we don't bother checking older versions.) 28 29; Test case built from: 30;struct S { 31; int s1; 32;}; 33; 34;S s; 35 36; Verify the v4 non-split headers. 37; Note that we check the exact offset of the DIEs because that tells us 38; the length of the header. 39; 40; SINGLE-4: .debug_info contents: 41; SINGLE-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 42; SINGLE-4: 0x0000000b: DW_TAG_compile_unit 43; 44; SINGLE-4: .debug_types contents: 45; SINGLE-4: 0x00000000: Type Unit: {{.*}} version = 0x0004, abbr_offset 46; SINGLE-4: 0x00000017: DW_TAG_type_unit 47 48; Verify the v4 split headers. 49; 50; O-4: .debug_info contents: 51; O-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 52; O-4: 0x0000000b: DW_TAG_compile_unit 53; 54; DWO-4: .debug_info.dwo contents: 55; DWO-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 56; DWO-4: 0x0000000b: DW_TAG_compile_unit 57; 58; DWO-4: .debug_types.dwo contents: 59; DWO-4: 0x00000000: Type Unit: {{.*}} version = 0x0004, abbr_offset 60; DWO-4: 0x00000017: DW_TAG_type_unit 61 62; Verify the v5 non-split headers. Type units come first. 63; All .debug_info sections are reported in one go, but the offset resets for 64; each new section. 65; 66; SINGLE-5: .debug_info contents: 67; SINGLE-5: 0x00000000: Type Unit: {{.*}} version = 0x0005, unit_type = DW_UT_type, abbr_offset 68; SINGLE-5: 0x00000018: DW_TAG_type_unit 69; SINGLE-5-NOT: contents: 70; SINGLE-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_compile, abbr_offset 71; SINGLE-5: 0x0000000c: DW_TAG_compile_unit 72 73; Verify the v5 split headers. 74; 75; O-5: .debug_info contents: 76; O-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_skeleton, abbr_offset 77; O-5-SAME: DWO_id = 0xccd7e58ef8bf4aa6 78; O-5: 0x00000014: DW_TAG_skeleton_unit 79; 80; DWO-5: .debug_info.dwo contents: 81; DWO-5: 0x00000000: Type Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_type, abbr_offset 82; DWO-5: 0x00000018: DW_TAG_type_unit 83; DWO-5: 0x00000033: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_compile, abbr_offset 84; DWO-5-SAME: DWO_id = 0xccd7e58ef8bf4aa6 85; DWO-5: 0x00000047: DW_TAG_compile_unit 86 87 88; ModuleID = 't.cpp' 89source_filename = "t.cpp" 90target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 91target triple = "x86_64-unknown-linux-gnu" 92 93%struct.S = type { i32 } 94 95@s = global %struct.S zeroinitializer, align 4, !dbg !0 96 97!llvm.dbg.cu = !{!2} 98!llvm.module.flags = !{!10, !11} 99!llvm.ident = !{!12} 100 101!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 102!1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true) 103!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 (trunk 295942)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 104!3 = !DIFile(filename: "t.cpp", directory: "/home/probinson/projects/scratch") 105!4 = !{} 106!5 = !{!0} 107!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !3, line: 1, size: 32, elements: !7, identifier: "_ZTS1S") 108!7 = !{!8} 109!8 = !DIDerivedType(tag: DW_TAG_member, name: "s1", scope: !6, file: !3, line: 2, baseType: !9, size: 32) 110!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 111!10 = !{i32 2, !"Dwarf Version", i32 4} 112!11 = !{i32 2, !"Debug Info Version", i32 3} 113!12 = !{!"clang version 5.0.0 (trunk 295942)"} 114