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 \ 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 20; Looking for DWARF headers to be generated correctly. 21; There are 8 variants with 5 formats: v4 CU, v4 TU, v5 normal/partial CU, 22; v5 skeleton/split CU, v5 normal/split TU. Some v5 variants differ only 23; in the unit_type code, and the skeleton/split CU differs from normal/partial 24; by having one extra field (dwo_id). 25; (v2 thru v4 CUs are all the same, and TUs were invented in v4, 26; so we don't bother checking older versions.) 27 28; Test case built from: 29;struct S { 30; int s1; 31;}; 32; 33;S s; 34 35; Verify the v4 non-split headers. 36; Note that we check the exact offset of the DIEs because that tells us 37; the length of the header. 38; 39; SINGLE-4: .debug_info contents: 40; SINGLE-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 41; SINGLE-4: 0x0000000b: DW_TAG_compile_unit 42; 43; SINGLE-4: .debug_types contents: 44; SINGLE-4: 0x00000000: Type Unit: {{.*}} version = 0x0004, abbr_offset 45; SINGLE-4: 0x00000017: DW_TAG_type_unit 46 47; Verify the v4 split headers. 48; 49; O-4: .debug_info contents: 50; O-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 51; O-4: 0x0000000b: DW_TAG_compile_unit 52; 53; DWO-4: .debug_info.dwo contents: 54; DWO-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004, abbr_offset 55; DWO-4: 0x0000000b: DW_TAG_compile_unit 56; 57; DWO-4: .debug_types.dwo contents: 58; DWO-4: 0x00000000: Type Unit: {{.*}} version = 0x0004, abbr_offset 59; DWO-4: 0x00000017: DW_TAG_type_unit 60 61; Verify the v5 non-split headers. Type units come first. 62; All .debug_info sections are reported in one go, but the offset resets for 63; each new section. 64; 65; SINGLE-5: .debug_info contents: 66; SINGLE-5: 0x00000000: Type Unit: {{.*}} version = 0x0005, unit_type = DW_UT_type, abbr_offset 67; SINGLE-5: 0x00000018: DW_TAG_type_unit 68; SINGLE-5-NOT: contents: 69; SINGLE-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_compile, abbr_offset 70; SINGLE-5: 0x0000000c: DW_TAG_compile_unit 71 72; Verify the v5 split headers. 73; 74; O-5: .debug_info contents: 75; O-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_skeleton, abbr_offset 76; O-5-SAME: DWO_id = [[HASH:0x[0-9a-f]*]] 77; O-5: 0x00000014: DW_TAG_skeleton_unit 78; 79; O-5: .debug_info.dwo contents: 80; O-5: 0x00000000: Type Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_type, abbr_offset 81; O-5: 0x00000018: DW_TAG_type_unit 82; O-5: 0x00000035: Compile Unit: {{.*}} version = 0x0005, unit_type = DW_UT_split_compile, abbr_offset 83; O-5-SAME: DWO_id = [[HASH]] 84; O-5: 0x00000049: DW_TAG_compile_unit 85 86 87; ModuleID = 't.cpp' 88source_filename = "t.cpp" 89target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 90target triple = "x86_64-unknown-linux-gnu" 91 92%struct.S = type { i32 } 93 94@s = global %struct.S zeroinitializer, align 4, !dbg !0 95 96!llvm.dbg.cu = !{!2} 97!llvm.module.flags = !{!10, !11} 98!llvm.ident = !{!12} 99 100!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 101!1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true) 102!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) 103!3 = !DIFile(filename: "t.cpp", directory: "/home/probinson/projects/scratch") 104!4 = !{} 105!5 = !{!0} 106!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !3, line: 1, size: 32, elements: !7, identifier: "_ZTS1S") 107!7 = !{!8} 108!8 = !DIDerivedType(tag: DW_TAG_member, name: "s1", scope: !6, file: !3, line: 2, baseType: !9, size: 32) 109!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 110!10 = !{i32 2, !"Dwarf Version", i32 4} 111!11 = !{i32 2, !"Debug Info Version", i32 3} 112!12 = !{!"clang version 5.0.0 (trunk 295942)"} 113