1 ; RUN: llc %s -filetype=obj -O0 -mtriple=i386-unknown-linux-gnu -dwarf-version=4 -o %t 2 ; RUN: llvm-dwarfdump -v %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 and multiple location lists 27 ; so that we can verify that 28 ; debug_loc entries are relative to the low_pc of the CU. The loc entry for 29 ; the byval argument in foo.cpp is in the second CU and so should have 30 ; an offset relative to that CU rather than from the beginning of the text 31 ; section. 32 33 ; Checking that we have two compile units with two sets of high/lo_pc. 34 ; CHECK: .debug_info contents 35 ; CHECK: DW_TAG_compile_unit 36 ; CHECK: DW_AT_low_pc {{.*}} (0x0000000000000020) 37 ; CHECK: DW_AT_high_pc 38 39 ; CHECK: DW_TAG_subprogram 40 ; CHECK-NOT: DW_TAG 41 ; CHECK: DW_AT_linkage_name [DW_FORM_strp]{{.*}}"_Z3baz1A" 42 ; CHECK-NOT: {{DW_TAG|NULL}} 43 ; CHECK: DW_TAG_formal_parameter 44 ; CHECK-NOT: DW_TAG 45 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ({{.*}} 46 ; CHECK-NEXT: [0x00000020, 0x00000037): DW_OP_breg0 EAX+0, DW_OP_deref 47 ; CHECK-NEXT: [0x00000037, 0x00000063): DW_OP_breg5 EBP-8, DW_OP_deref, DW_OP_deref 48 ; CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}}"a" 49 50 ; CHECK: DW_TAG_variable 51 ; CHECK: DW_AT_location [DW_FORM_exprloc] 52 ; CHECK-NOT: DW_AT_location 53 54 ; CHECK: DW_TAG_compile_unit 55 ; CHECK: DW_AT_low_pc {{.*}} (0x0000000000000000) 56 ; CHECK: DW_AT_high_pc 57 58 ; CHECK: DW_TAG_subprogram 59 ; CHECK-NOT: DW_TAG 60 ; CHECK: DW_AT_linkage_name [DW_FORM_strp]{{.*}}"_Z3bari" 61 ; CHECK-NOT: {{DW_TAG|NULL}} 62 ; CHECK: DW_TAG_formal_parameter 63 ; CHECK-NOT: DW_TAG 64 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ({{.*}} 65 ; CHECK-NEXT: [0x00000000, 0x0000000a): DW_OP_consts +0, DW_OP_stack_value 66 ; CHECK-NEXT: [0x0000000a, 0x00000017): DW_OP_consts +1, DW_OP_stack_value) 67 ; CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}}"b" 68 69 ; CHECK: .debug_loc contents: 70 ; CHECK: 0x00000000: 71 ; CHECK-NEXT: [0x00000000, 0x0000000a): DW_OP_consts +0, DW_OP_stack_value 72 ; CHECK-NEXT: [0x0000000a, 0x00000017): DW_OP_consts +1, DW_OP_stack_value 73 ; CHECK: 0x00000022: 74 ; CHECK-NEXT: [0x00000000, 0x00000017): DW_OP_breg0 EAX+0, DW_OP_deref 75 ; CHECK-NEXT: [0x00000017, 0x00000043): DW_OP_breg5 EBP-8, DW_OP_deref, DW_OP_deref 76 77 %struct.A = type { i32 (...)**, i32 } 78 79 ; Function Attrs: nounwind 80 define i32 @_Z3bari(i32 %b) #0 !dbg !4 { 81 entry: 82 %b.addr = alloca i32, align 4 83 store i32 %b, i32* %b.addr, align 4 84 call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !DIExpression()), !dbg !22 85 %0 = load i32, i32* %b.addr, align 4, !dbg !23 86 call void @llvm.dbg.value(metadata i32 1, metadata !21, metadata !DIExpression()), !dbg !22 87 %add = add nsw i32 %0, 4, !dbg !23 88 ret i32 %add, !dbg !23 89 } 90 91 ; Function Attrs: nounwind readnone 92 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 93 94 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 95 96 define void @_Z3baz1A(%struct.A* %a) #2 !dbg !14 { 97 entry: 98 %z = alloca i32, align 4 99 call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !24, metadata !DIExpression(DW_OP_deref)), !dbg !25 100 call void @llvm.dbg.declare(metadata i32* %z, metadata !26, metadata !DIExpression()), !dbg !27 101 store i32 2, i32* %z, align 4, !dbg !27 102 %var = getelementptr inbounds %struct.A, %struct.A* %a, i32 0, i32 1, !dbg !28 103 %0 = load i32, i32* %var, align 4, !dbg !28 104 %cmp = icmp sgt i32 %0, 2, !dbg !28 105 br i1 %cmp, label %if.then, label %if.end, !dbg !28 106 107 if.then: ; preds = %entry 108 %1 = load i32, i32* %z, align 4, !dbg !30 109 %inc = add nsw i32 %1, 1, !dbg !30 110 store i32 %inc, i32* %z, align 4, !dbg !30 111 br label %if.end, !dbg !30 112 113 if.end: ; preds = %if.then, %entry 114 %call = call signext i8 @_ZN1A3fooEv(%struct.A* %a), !dbg !31 115 %conv = sext i8 %call to i32, !dbg !31 116 %cmp1 = icmp eq i32 %conv, 97, !dbg !31 117 br i1 %cmp1, label %if.then2, label %if.end4, !dbg !31 118 119 if.then2: ; preds = %if.end 120 %2 = load i32, i32* %z, align 4, !dbg !33 121 %inc3 = add nsw i32 %2, 1, !dbg !33 122 store i32 %inc3, i32* %z, align 4, !dbg !33 123 br label %if.end4, !dbg !33 124 125 if.end4: ; preds = %if.then2, %if.end 126 ret void, !dbg !34 127 } 128 129 declare signext i8 @_ZN1A3fooEv(%struct.A*) #2 130 131 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" } 132 attributes #1 = { nounwind readnone } 133 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" } 134 135 !llvm.dbg.cu = !{!0, !9} 136 !llvm.module.flags = !{!18, !19} 137 !llvm.ident = !{!20, !20} 138 139 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 140 !1 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc") 141 !2 = !{} 142 !4 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) 143 !5 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc") 144 !6 = !DISubroutineType(types: !7) 145 !7 = !{!8, !8} 146 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 147 !9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: FullDebug, file: !10, enums: !2, retainedTypes: !11, globals: !2, imports: !2) 148 !10 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc") 149 !11 = !{!12} 150 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, flags: DIFlagFwdDecl, file: !10, identifier: "_ZTS1A") 151 !14 = distinct !DISubprogram(name: "baz", linkageName: "_Z3baz1A", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !9, scopeLine: 6, file: !10, scope: !15, type: !16, retainedNodes: !2) 152 !15 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc") 153 !16 = !DISubroutineType(types: !17) 154 !17 = !{null, !12} 155 !18 = !{i32 2, !"Dwarf Version", i32 4} 156 !19 = !{i32 2, !"Debug Info Version", i32 3} 157 !20 = !{!"clang version 3.5.0 (210479)"} 158 !21 = !DILocalVariable(name: "b", line: 1, arg: 1, scope: !4, file: !5, type: !8) 159 !22 = !DILocation(line: 1, scope: !4) 160 !23 = !DILocation(line: 2, scope: !4) 161 !24 = !DILocalVariable(name: "a", line: 6, arg: 1, scope: !14, file: !15, type: !12) 162 !25 = !DILocation(line: 6, scope: !14) 163 !26 = !DILocalVariable(name: "z", line: 7, scope: !14, file: !15, type: !8) 164 !27 = !DILocation(line: 7, scope: !14) 165 !28 = !DILocation(line: 8, scope: !29) 166 !29 = distinct !DILexicalBlock(line: 8, column: 0, file: !10, scope: !14) 167 !30 = !DILocation(line: 9, scope: !29) 168 !31 = !DILocation(line: 10, scope: !32) 169 !32 = distinct !DILexicalBlock(line: 10, column: 0, file: !10, scope: !14) 170 !33 = !DILocation(line: 11, scope: !32) 171 !34 = !DILocation(line: 12, scope: !14) 172
