1 ; RUN: llc %s -filetype=obj -O0 -mtriple=i386-unknown-linux-gnu -dwarf-version=4 -o %t 2 ; RUN: llvm-dwarfdump %t | FileCheck %s 3 4 ; From the code: 5 6 ; debug-loc-offset1.cc 7 ; int bar (int b) { 8 ; return b+4; 9 ; } 10 11 ; debug-loc-offset2.cc 12 ; struct A { 13 ; int var; 14 ; virtual char foo(); 15 ; }; 16 17 ; void baz(struct A a) { 18 ; int z = 2; 19 ; if (a.var > 2) 20 ; z++; 21 ; if (a.foo() == 'a') 22 ; z++; 23 ; } 24 25 ; Compiled separately for i386-pc-linux-gnu and linked together. 26 ; This ensures that we have multiple compile units so that we can verify that 27 ; debug_loc entries are relative to the low_pc of the CU. The loc entry for 28 ; the byval argument in foo.cpp is in the second CU and so should have 29 ; an offset relative to that CU rather than from the beginning of the text 30 ; section. 31 32 ; Checking that we have two compile units with two sets of high/lo_pc. 33 ; CHECK: .debug_info contents 34 ; CHECK: DW_TAG_compile_unit 35 ; CHECK: DW_AT_low_pc 36 ; CHECK: DW_AT_high_pc 37 38 ; CHECK: DW_TAG_compile_unit 39 ; CHECK: DW_AT_low_pc 40 ; CHECK: DW_AT_high_pc 41 42 ; CHECK: DW_TAG_subprogram 43 ; CHECK-NOT: DW_TAG 44 ; CHECK: DW_AT_linkage_name [DW_FORM_strp]{{.*}}"_Z3baz1A" 45 ; CHECK-NOT: {{DW_TAG|NULL}} 46 ; CHECK: DW_TAG_formal_parameter 47 ; CHECK-NOT: DW_TAG 48 ; CHECK: DW_AT_location [DW_FORM_sec_offset] (0x00000000) 49 ; CHECK-NOT: DW_TAG 50 ; CHECK: DW_AT_name [DW_FORM_strp]{{.*}}"a" 51 52 ; CHECK: DW_TAG_variable 53 ; CHECK: DW_AT_location [DW_FORM_exprloc] 54 ; CHECK-NOT: DW_AT_location 55 56 ; CHECK: .debug_loc contents: 57 ; CHECK: 0x00000000: Beginning address offset: 0x0000000000000000 58 ; CHECK: Ending address offset: 0x0000000000000017 59 60 %struct.A = type { i32 (...)**, i32 } 61 62 ; Function Attrs: nounwind 63 define i32 @_Z3bari(i32 %b) #0 !dbg !4 { 64 entry: 65 %b.addr = alloca i32, align 4 66 store i32 %b, i32* %b.addr, align 4 67 call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !21, metadata !DIExpression()), !dbg !22 68 %0 = load i32, i32* %b.addr, align 4, !dbg !23 69 %add = add nsw i32 %0, 4, !dbg !23 70 ret i32 %add, !dbg !23 71 } 72 73 ; Function Attrs: nounwind readnone 74 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 75 76 define void @_Z3baz1A(%struct.A* %a) #2 !dbg !14 { 77 entry: 78 %z = alloca i32, align 4 79 call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !24, metadata !DIExpression(DW_OP_deref)), !dbg !25 80 call void @llvm.dbg.declare(metadata i32* %z, metadata !26, metadata !DIExpression()), !dbg !27 81 store i32 2, i32* %z, align 4, !dbg !27 82 %var = getelementptr inbounds %struct.A, %struct.A* %a, i32 0, i32 1, !dbg !28 83 %0 = load i32, i32* %var, align 4, !dbg !28 84 %cmp = icmp sgt i32 %0, 2, !dbg !28 85 br i1 %cmp, label %if.then, label %if.end, !dbg !28 86 87 if.then: ; preds = %entry 88 %1 = load i32, i32* %z, align 4, !dbg !30 89 %inc = add nsw i32 %1, 1, !dbg !30 90 store i32 %inc, i32* %z, align 4, !dbg !30 91 br label %if.end, !dbg !30 92 93 if.end: ; preds = %if.then, %entry 94 %call = call signext i8 @_ZN1A3fooEv(%struct.A* %a), !dbg !31 95 %conv = sext i8 %call to i32, !dbg !31 96 %cmp1 = icmp eq i32 %conv, 97, !dbg !31 97 br i1 %cmp1, label %if.then2, label %if.end4, !dbg !31 98 99 if.then2: ; preds = %if.end 100 %2 = load i32, i32* %z, align 4, !dbg !33 101 %inc3 = add nsw i32 %2, 1, !dbg !33 102 store i32 %inc3, i32* %z, align 4, !dbg !33 103 br label %if.end4, !dbg !33 104 105 if.end4: ; preds = %if.then2, %if.end 106 ret void, !dbg !34 107 } 108 109 declare signext i8 @_ZN1A3fooEv(%struct.A*) #2 110 111 attributes #0 = { nounwind "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" } 112 attributes #1 = { nounwind readnone } 113 attributes #2 = { "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" } 114 115 !llvm.dbg.cu = !{!0, !9} 116 !llvm.module.flags = !{!18, !19} 117 !llvm.ident = !{!20, !20} 118 119 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 120 !1 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc") 121 !2 = !{} 122 !3 = !{!4} 123 !4 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 124 !5 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc") 125 !6 = !DISubroutineType(types: !7) 126 !7 = !{!8, !8} 127 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 128 !9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !10, enums: !2, retainedTypes: !11, subprograms: !13, globals: !2, imports: !2) 129 !10 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc") 130 !11 = !{!12} 131 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, flags: DIFlagFwdDecl, file: !10, identifier: "_ZTS1A") 132 !13 = !{!14} 133 !14 = distinct !DISubprogram(name: "baz", linkageName: "_Z3baz1A", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !10, scope: !15, type: !16, variables: !2) 134 !15 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc") 135 !16 = !DISubroutineType(types: !17) 136 !17 = !{null, !12} 137 !18 = !{i32 2, !"Dwarf Version", i32 4} 138 !19 = !{i32 2, !"Debug Info Version", i32 3} 139 !20 = !{!"clang version 3.5.0 (210479)"} 140 !21 = !DILocalVariable(name: "b", line: 1, arg: 1, scope: !4, file: !5, type: !8) 141 !22 = !DILocation(line: 1, scope: !4) 142 !23 = !DILocation(line: 2, scope: !4) 143 !24 = !DILocalVariable(name: "a", line: 6, arg: 1, scope: !14, file: !15, type: !"_ZTS1A") 144 !25 = !DILocation(line: 6, scope: !14) 145 !26 = !DILocalVariable(name: "z", line: 7, scope: !14, file: !15, type: !8) 146 !27 = !DILocation(line: 7, scope: !14) 147 !28 = !DILocation(line: 8, scope: !29) 148 !29 = distinct !DILexicalBlock(line: 8, column: 0, file: !10, scope: !14) 149 !30 = !DILocation(line: 9, scope: !29) 150 !31 = !DILocation(line: 10, scope: !32) 151 !32 = distinct !DILexicalBlock(line: 10, column: 0, file: !10, scope: !14) 152 !33 = !DILocation(line: 11, scope: !32) 153 !34 = !DILocation(line: 12, scope: !14) 154
