1 ; RUN: llc -split-dwarf=Enable -O0 < %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj | llvm-dwarfdump -debug-dump=info - | FileCheck %s 2 3 ; Test the emission of gmlt-like inlining information into the skeleton unit. 4 ; This allows inline-aware symbolication/backtracing given only the linked 5 ; executable, without needing access to the .dwos. 6 7 ; A simple example of inlining generated with clang -gsplit-dwarf 8 9 ; A member function is used to force emission of the declaration of the 10 ; function into the .dwo file, which may be shared with other CUs in the dwo ; 11 ; under fission, but should not be shared with the skeleton's CU. This also 12 ; tests the general case of context emission, which is suppressed in gmlt-like 13 ; data. 14 15 ; Include a template just to test template parameters are not emitted in 16 ; gmlt-like data. 17 18 ; And some varargs to make sure DW_TAG_unspecified_parameters is not emitted. 19 20 ; And a using declaration in a nested lexical_block... because that shouldn't 21 ; be emitted either. 22 23 ; Minor complication: after generating the LLVM IR, it was manually edited so 24 ; that the 'f1()' call from f3 was reordered to appear between the two inlined 25 ; f1 calls from f2. This causes f2's inlined_subroutine to use DW_AT_ranges, 26 ; thus exercising range list generation/referencing which was buggy. 27 28 ; struct foo { 29 ; template<typename T> 30 ; static void f2(); 31 ; static void f3(...); 32 ; }; 33 ; 34 ; void f1(); 35 ; 36 ; template<typename T> 37 ; inline __attribute__((always_inline)) void foo::f2() { 38 ; f1(); 39 ; f1(); 40 ; } 41 ; 42 ; void foo::f3(...) { 43 ; if (true) { 44 ; f1(); 45 ; f2<int>(); 46 ; using ::foo; 47 ; } 48 ; } 49 50 ; Check that we emit the usual gmlt-like data for this file, including brief 51 ; descriptions of subprograms with inlined scopes. 52 53 ; FIXME: Once tools support indexed addresses in the skeleton CU, we should use 54 ; those (DW_FORM_addr would become DW_FORM_GNU_addr_index below) since those 55 ; addresses will already be in the address pool anyway. 56 57 ; CHECK: DW_TAG_subprogram 58 ; CHECK-NEXT: DW_AT_name {{.*}} "f2<int>" 59 ; CHECK-NOT: DW_ 60 ; CHECK: DW_TAG_subprogram 61 ; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] 62 ; CHECK-NEXT: DW_AT_high_pc 63 ; CHECK-NEXT: DW_AT_name {{.*}} "f3" 64 ; CHECK-NOT: {{DW_|NULL}} 65 ; CHECK: DW_TAG_inlined_subroutine 66 ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f2<int>" 67 ; CHECK-NEXT: DW_AT_ranges 68 ; CHECK-NEXT: DW_AT_call_file 69 ; CHECK-NEXT: DW_AT_call_line {{.*}} (18) 70 ; CHECK-NOT: DW_ 71 72 ; Function Attrs: uwtable 73 define void @_ZN3foo2f3Ez(...) #0 align 2 { 74 entry: 75 call void @_Z2f1v(), !dbg !26 76 call void @_Z2f1v(), !dbg !25 77 call void @_Z2f1v(), !dbg !28 78 ret void, !dbg !29 79 } 80 81 declare void @_Z2f1v() #1 82 83 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" } 84 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" } 85 86 !llvm.dbg.cu = !{!0} 87 !llvm.module.flags = !{!22, !23} 88 !llvm.ident = !{!24} 89 90 !0 = !MDCompileUnit(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) 91 !1 = !MDFile(filename: "fission-inline.cpp", directory: "/tmp/dbginfo") 92 !2 = !{} 93 !3 = !{!4} 94 !4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 8, align: 8, file: !1, elements: !5, identifier: "_ZTS3foo") 95 !5 = !{!6} 96 !6 = !MDSubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 4, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !"_ZTS3foo", type: !7) 97 !7 = !MDSubroutineType(types: !8) 98 !8 = !{null, null} 99 !9 = !{!10, !11} 100 !10 = !MDSubprogram(name: "f3", linkageName: "_ZN3foo2f3Ez", line: 15, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 15, file: !1, scope: !"_ZTS3foo", type: !7, function: void (...)* @_ZN3foo2f3Ez, declaration: !6, variables: !2) 101 !11 = !MDSubprogram(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) 102 !12 = !MDSubroutineType(types: !13) 103 !13 = !{null} 104 !14 = !{!15} 105 !15 = !MDTemplateTypeParameter(name: "T", type: !16) 106 !16 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 107 !17 = !MDSubprogram(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) 108 !18 = !{!19} 109 !19 = !MDImportedEntity(tag: DW_TAG_imported_declaration, line: 19, scope: !20, entity: !"_ZTS3foo") 110 !20 = distinct !MDLexicalBlock(line: 16, column: 13, file: !1, scope: !21) 111 !21 = distinct !MDLexicalBlock(line: 16, column: 7, file: !1, scope: !10) 112 !22 = !{i32 2, !"Dwarf Version", i32 4} 113 !23 = !{i32 2, !"Debug Info Version", i32 3} 114 !24 = !{!"clang version 3.6.0 "} 115 !25 = !MDLocation(line: 17, column: 5, scope: !20) 116 !26 = !MDLocation(line: 11, column: 3, scope: !11, inlinedAt: !27) 117 !27 = !MDLocation(line: 18, column: 5, scope: !20) 118 !28 = !MDLocation(line: 12, column: 3, scope: !11, inlinedAt: !27) 119 !29 = !MDLocation(line: 21, column: 1, scope: !10) 120
