1; REQUIRES: object-emission 2; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s 3 4; Generated from the following source compiled with clang++ -gmlt: 5; void f1() {} 6; void __attribute__((section("__TEXT,__bar"))) f2() {} 7; void __attribute__((always_inline)) f3() { f1(); } 8; void f4() { f3(); } 9 10; Check that 11; * -gmlt includes no DW_TAG_subprograms for subprograms without inlined 12; subroutines. 13; * yet still produces DW_AT_ranges and a range list in debug_ranges that 14; describes those subprograms 15 16; CHECK: DW_TAG_compile_unit 17; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000 18; CHECK-NOT: {{DW_TAG|NULL}} 19 20; Omitting the subprograms without inlined subroutines is not possible 21; currently on Darwin as dsymutil will drop the whole CU if it has no subprograms 22; (which happens with this optimization if there are no inlined subroutines). 23 24; DARWIN: DW_TAG_subprogram 25; DARWIN-NOT: DW_TAG 26; DARWIN: DW_AT_name {{.*}} "f1" 27; DARWIN-NOT: {{DW_TAG|NULL}} 28; DARWIN: DW_TAG_subprogram 29; DARWIN-NOT: DW_TAG 30; DARWIN: DW_AT_name {{.*}} "f2" 31; DARWIN-NOT: {{DW_TAG|NULL}} 32; DARWIN: DW_TAG_subprogram 33; DARWIN-NOT: DW_TAG 34; Can't check the abstract_origin value across the DARWIN/CHECK checking and 35; ordering, so don't bother - just trust me, it refers to f3 down there. 36; DARWIN: DW_AT_abstract_origin 37; DARWIN-NOT: {{DW_TAG|NULL}} 38 39 40; FIXME: Emitting separate abstract definitions is inefficient when we could 41; just attach the DW_AT_name to the inlined_subroutine directly. Except that 42; would produce many string relocations. Implement string indexing in the 43; skeleton CU to address the relocation problem, then remove abstract 44; definitions from -gmlt here. 45 46; CHECK: DW_TAG_subprogram 47; CHECK-NEXT: DW_AT_name {{.*}} "f3" 48 49; FIXME: We don't really need DW_AT_inline, consumers can ignore this due to 50; the absence of high_pc/low_pc/ranges and know that they just need it for 51; retrieving the name of a concrete inlined instance 52 53; CHECK-NOT: {{DW_TAG|DW_AT|NULL}} 54 55; Check that we only provide the minimal attributes on a subprogram to save space. 56; CHECK: DW_TAG_subprogram 57; CHECK-NEXT: DW_AT_low_pc 58; CHECK-NEXT: DW_AT_high_pc 59; CHECK-NEXT: DW_AT_name 60; CHECK-NOT: {{DW_TAG|DW_AT}} 61; CHECK: DW_TAG_inlined_subroutine 62 63; As mentioned above - replace DW_AT_abstract_origin with DW_AT_name to save 64; space once we have support for string indexing in non-dwo sections 65 66; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f3" 67; CHECK-NEXT: DW_AT_low_pc 68; CHECK-NEXT: DW_AT_high_pc 69; CHECK-NEXT: DW_AT_call_file 70; CHECK-NEXT: DW_AT_call_line 71 72; Make sure we don't have any other subprograms here (subprograms with no 73; inlined subroutines are omitted by design to save space) 74 75; CHECK-NOT: {{DW_TAG|DW_AT}} 76; CHECK: NULL 77; CHECK-NOT: {{DW_TAG|DW_AT}} 78; CHECK: NULL 79 80 81; CHECK: .debug_ranges contents: 82 83; ... some addresses (depends on platform (such as platforms with function 84; reordering in the linker), and looks wonky on platforms with zero values 85; written in relocation places (dumper needs to be fixed to read the 86; relocations rather than interpret that as the end of a range list)) 87 88; CHECK: 00000000 <End of list> 89 90 91; Check that we don't emit any pubnames or pubtypes under -gmlt 92; CHECK: .debug_pubnames contents: 93; CHECK-NOT: Offset 94 95; CHECK: .debug_pubtypes contents: 96; CHECK-NOT: Offset 97 98; CHECK: .apple{{.*}} contents: 99 100; Function Attrs: nounwind uwtable 101define void @_Z2f1v() #0 !dbg !4 { 102entry: 103 ret void, !dbg !13 104} 105 106; Function Attrs: nounwind uwtable 107define void @_Z2f2v() #0 section "__TEXT,__bar" !dbg !7 { 108entry: 109 ret void, !dbg !14 110} 111 112; Function Attrs: alwaysinline nounwind uwtable 113define void @_Z2f3v() #1 !dbg !8 { 114entry: 115 call void @_Z2f1v(), !dbg !15 116 ret void, !dbg !16 117} 118 119; Function Attrs: nounwind uwtable 120define void @_Z2f4v() #0 !dbg !9 { 121entry: 122 call void @_Z2f1v() #2, !dbg !17 123 ret void, !dbg !19 124} 125 126attributes #0 = { nounwind 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" } 127attributes #1 = { alwaysinline nounwind 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" } 128attributes #2 = { nounwind } 129 130!llvm.dbg.cu = !{!0} 131!llvm.module.flags = !{!10, !11} 132!llvm.ident = !{!12} 133 134!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 135!1 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo") 136!2 = !{} 137!3 = !{!4, !7, !8, !9} 138!4 = distinct !DISubprogram(name: "f1", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 139!5 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo") 140!6 = !DISubroutineType(types: !2) 141!7 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2) 142!8 = distinct !DISubprogram(name: "f3", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2) 143!9 = distinct !DISubprogram(name: "f4", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !5, type: !6, variables: !2) 144!10 = !{i32 2, !"Dwarf Version", i32 4} 145!11 = !{i32 2, !"Debug Info Version", i32 3} 146!12 = !{!"clang version 3.6.0 "} 147!13 = !DILocation(line: 1, column: 12, scope: !4) 148!14 = !DILocation(line: 2, column: 53, scope: !7) 149!15 = !DILocation(line: 3, column: 44, scope: !8) 150!16 = !DILocation(line: 3, column: 50, scope: !8) 151!17 = !DILocation(line: 3, column: 44, scope: !8, inlinedAt: !18) 152!18 = !DILocation(line: 4, column: 13, scope: !9) 153!19 = !DILocation(line: 4, column: 19, scope: !9) 154