1 ; RUN: llc -split-dwarf=Enable -O0 < %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj > %t 2 ; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s 3 ; RUN: llvm-objdump -r %t | FileCheck --check-prefix=RELOCS %s 4 5 ; Test the emission of gmlt-like inlining information into the skeleton unit. 6 ; This allows inline-aware symbolication/backtracing given only the linked 7 ; executable, without needing access to the .dwos. 8 9 ; A simple example of inlining generated with clang -gsplit-dwarf 10 11 ; A member function is used to force emission of the declaration of the 12 ; function into the .dwo file, which may be shared with other CUs in the dwo ; 13 ; under fission, but should not be shared with the skeleton's CU. This also 14 ; tests the general case of context emission, which is suppressed in gmlt-like 15 ; data. 16 17 ; Include a template just to test template parameters are not emitted in 18 ; gmlt-like data. 19 20 ; And some varargs to make sure DW_TAG_unspecified_parameters is not emitted. 21 22 ; And a using declaration in a nested lexical_block... because that shouldn't 23 ; be emitted either. 24 25 ; Minor complication: after generating the LLVM IR, it was manually edited so 26 ; that the 'f1()' call from f3 was reordered to appear between the two inlined 27 ; f1 calls from f2. This causes f2's inlined_subroutine to use DW_AT_ranges, 28 ; thus exercising range list generation/referencing which was buggy. 29 30 ; struct foo { 31 ; template<typename T> 32 ; static void f2(); 33 ; static void f3(...); 34 ; }; 35 ; 36 ; void f1(); 37 ; 38 ; template<typename T> 39 ; inline __attribute__((always_inline)) void foo::f2() { 40 ; f1(); 41 ; f1(); 42 ; } 43 ; 44 ; void foo::f3(...) { 45 ; if (true) { 46 ; f1(); 47 ; f2<int>(); 48 ; using ::foo; 49 ; } 50 ; } 51 52 ; Check that we emit the usual gmlt-like data for this file, including brief 53 ; descriptions of subprograms with inlined scopes. 54 55 ; FIXME: Once tools support indexed addresses in the skeleton CU, we should use 56 ; those (DW_FORM_addr would become DW_FORM_GNU_addr_index below) since those 57 ; addresses will already be in the address pool anyway. 58 59 ; CHECK: DW_TAG_subprogram 60 ; CHECK-NEXT: DW_AT_name {{.*}} "f2<int>" 61 ; CHECK-NOT: DW_ 62 ; CHECK: DW_TAG_subprogram 63 ; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] 64 ; CHECK-NEXT: DW_AT_high_pc 65 ; CHECK-NEXT: DW_AT_name {{.*}} "f3" 66 ; CHECK-NOT: {{DW_|NULL}} 67 ; CHECK: DW_TAG_inlined_subroutine 68 ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f2<int>" 69 ; CHECK-NEXT: DW_AT_ranges 70 ; CHECK-NOT: {{DW_AT|DW_TAG|NULL}} 71 ; CHECK: DW_AT_call_file 72 ; CHECK-NEXT: DW_AT_call_line {{.*}} (18) 73 ; CHECK-NOT: DW_ 74 75 ; RELOCS-NOT: RELOCATION RECORDS FOR [.rela.debug_ranges] 76 77 ; Function Attrs: uwtable 78 define void @_ZN3foo2f3Ez(...) #0 align 2 !dbg !10 { 79 entry: 80 call void @_Z2f1v(), !dbg !26 81 call void @_Z2f1v(), !dbg !25 82 call void @_Z2f1v(), !dbg !28 83 ret void, !dbg !29 84 } 85 86 declare void @_Z2f1v() #1 87 88 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 89 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 90 91 !llvm.dbg.cu = !{!0} 92 !llvm.module.flags = !{!22, !23} 93 !llvm.ident = !{!24} 94 95 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, splitDebugFilename: "fission-inline.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !2, imports: !18) 96 !1 = !DIFile(filename: "fission-inline.cpp", directory: "/tmp/dbginfo") 97 !2 = !{} 98 !3 = !{!4} 99 !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS3foo") 100 !5 = !{!6} 101 !6 = !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 4, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !"_ZTS3foo", type: !7) 102 !7 = !DISubroutineType(types: !8) 103 !8 = !{null, null} 104 !9 = !{!10, !11} 105 !10 = distinct !DISubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 15, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 15, file: !1, scope: !"_ZTS3foo", type: !7, declaration: !6, variables: !2) 106 !11 = distinct !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !"_ZTS3foo", type: !12, templateParams: !14, declaration: !17, variables: !2) 107 !12 = !DISubroutineType(types: !13) 108 !13 = !{null} 109 !14 = !{!15} 110 !15 = !DITemplateTypeParameter(name: "T", type: !16) 111 !16 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 112 !17 = !DISubprogram(name: "f2<int>", linkageName: "_ZN3foo2f2IiEEvv", line: 10, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !"_ZTS3foo", type: !12, templateParams: !14) 113 !18 = !{!19} 114 !19 = !DIImportedEntity(tag: DW_TAG_imported_declaration, line: 19, scope: !20, entity: !"_ZTS3foo") 115 !20 = distinct !DILexicalBlock(line: 16, column: 13, file: !1, scope: !21) 116 !21 = distinct !DILexicalBlock(line: 16, column: 7, file: !1, scope: !10) 117 !22 = !{i32 2, !"Dwarf Version", i32 4} 118 !23 = !{i32 2, !"Debug Info Version", i32 3} 119 !24 = !{!"clang version 3.6.0 "} 120 !25 = !DILocation(line: 17, column: 5, scope: !20) 121 !26 = !DILocation(line: 11, column: 3, scope: !11, inlinedAt: !27) 122 !27 = !DILocation(line: 18, column: 5, scope: !20) 123 !28 = !DILocation(line: 12, column: 3, scope: !11, inlinedAt: !27) 124 !29 = !DILocation(line: 21, column: 1, scope: !10) 125
