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