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      1 ; RUN: llc -mtriple=x86_64-apple-macosx10.7 %s -o %t -filetype=obj
      2 ; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
      3 
      4 ; CHECK: b_ref
      5 ; CHECK-NOT: AT_bit_size
      6 
      7 %struct.bar = type { %struct.baz, %struct.baz* }
      8 %struct.baz = type { i32 }
      9 
     10 define i32 @main(i32 %argc, i8** %argv) uwtable ssp !dbg !29 {
     11 entry:
     12   %retval = alloca i32, align 4
     13   %argc.addr = alloca i32, align 4
     14   %argv.addr = alloca i8**, align 8
     15   %myBar = alloca %struct.bar, align 8
     16   store i32 0, i32* %retval
     17   store i32 %argc, i32* %argc.addr, align 4
     18   call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !49, metadata !DIExpression()), !dbg !50
     19   store i8** %argv, i8*** %argv.addr, align 8
     20   call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !51, metadata !DIExpression()), !dbg !52
     21   call void @llvm.dbg.declare(metadata %struct.bar* %myBar, metadata !53, metadata !DIExpression()), !dbg !55
     22   call void @_ZN3barC1Ei(%struct.bar* %myBar, i32 1), !dbg !56
     23   ret i32 0, !dbg !57
     24 }
     25 
     26 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
     27 
     28 define linkonce_odr void @_ZN3barC1Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 !dbg !37 {
     29 entry:
     30   %this.addr = alloca %struct.bar*, align 8
     31   %x.addr = alloca i32, align 4
     32   store %struct.bar* %this, %struct.bar** %this.addr, align 8
     33   call void @llvm.dbg.declare(metadata %struct.bar** %this.addr, metadata !58, metadata !DIExpression()), !dbg !59
     34   store i32 %x, i32* %x.addr, align 4
     35   call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !60, metadata !DIExpression()), !dbg !61
     36   %this1 = load %struct.bar*, %struct.bar** %this.addr
     37   %0 = load i32, i32* %x.addr, align 4, !dbg !62
     38   call void @_ZN3barC2Ei(%struct.bar* %this1, i32 %0), !dbg !62
     39   ret void, !dbg !62
     40 }
     41 
     42 define linkonce_odr void @_ZN3barC2Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 !dbg !40 {
     43 entry:
     44   %this.addr = alloca %struct.bar*, align 8
     45   %x.addr = alloca i32, align 4
     46   store %struct.bar* %this, %struct.bar** %this.addr, align 8
     47   call void @llvm.dbg.declare(metadata %struct.bar** %this.addr, metadata !63, metadata !DIExpression()), !dbg !64
     48   store i32 %x, i32* %x.addr, align 4
     49   call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !65, metadata !DIExpression()), !dbg !66
     50   %this1 = load %struct.bar*, %struct.bar** %this.addr
     51   %b = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 0, !dbg !67
     52   %0 = load i32, i32* %x.addr, align 4, !dbg !67
     53   call void @_ZN3bazC1Ei(%struct.baz* %b, i32 %0), !dbg !67
     54   %1 = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 1, !dbg !67
     55   %b2 = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 0, !dbg !67
     56   store %struct.baz* %b2, %struct.baz** %1, align 8, !dbg !67
     57   ret void, !dbg !68
     58 }
     59 
     60 define linkonce_odr void @_ZN3bazC1Ei(%struct.baz* %this, i32 %a) unnamed_addr uwtable ssp align 2 !dbg !43 {
     61 entry:
     62   %this.addr = alloca %struct.baz*, align 8
     63   %a.addr = alloca i32, align 4
     64   store %struct.baz* %this, %struct.baz** %this.addr, align 8
     65   call void @llvm.dbg.declare(metadata %struct.baz** %this.addr, metadata !70, metadata !DIExpression()), !dbg !71
     66   store i32 %a, i32* %a.addr, align 4
     67   call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !72, metadata !DIExpression()), !dbg !73
     68   %this1 = load %struct.baz*, %struct.baz** %this.addr
     69   %0 = load i32, i32* %a.addr, align 4, !dbg !74
     70   call void @_ZN3bazC2Ei(%struct.baz* %this1, i32 %0), !dbg !74
     71   ret void, !dbg !74
     72 }
     73 
     74 define linkonce_odr void @_ZN3bazC2Ei(%struct.baz* %this, i32 %a) unnamed_addr nounwind uwtable ssp align 2 !dbg !46 {
     75 entry:
     76   %this.addr = alloca %struct.baz*, align 8
     77   %a.addr = alloca i32, align 4
     78   store %struct.baz* %this, %struct.baz** %this.addr, align 8
     79   call void @llvm.dbg.declare(metadata %struct.baz** %this.addr, metadata !75, metadata !DIExpression()), !dbg !76
     80   store i32 %a, i32* %a.addr, align 4
     81   call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !77, metadata !DIExpression()), !dbg !78
     82   %this1 = load %struct.baz*, %struct.baz** %this.addr
     83   %h = getelementptr inbounds %struct.baz, %struct.baz* %this1, i32 0, i32 0, !dbg !79
     84   %0 = load i32, i32* %a.addr, align 4, !dbg !79
     85   store i32 %0, i32* %h, align 4, !dbg !79
     86   ret void, !dbg !80
     87 }
     88 
     89 !llvm.dbg.cu = !{!0}
     90 !llvm.module.flags = !{!83}
     91 
     92 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 146596)", isOptimized: false, emissionKind: FullDebug, file: !82, enums: !1, retainedTypes: !3, globals: !1, imports:  !1)
     93 !1 = !{}
     94 !3 = !{!5, !9}
     95 !5 = !DICompositeType(tag: DW_TAG_class_type, name: "bar", line: 9, size: 128, align: 64, file: !82, elements: !7)
     96 !6 = !DIFile(filename: "main.cpp", directory: "/Users/echristo/tmp/bad-struct-ref")
     97 !7 = !{!8, !19, !21}
     98 !8 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 11, size: 32, align: 32, file: !82, scope: !5, baseType: !9)
     99 !9 = !DICompositeType(tag: DW_TAG_class_type, name: "baz", line: 3, size: 32, align: 32, file: !82, elements: !10)
    100 !10 = !{!11, !13}
    101 !11 = !DIDerivedType(tag: DW_TAG_member, name: "h", line: 5, size: 32, align: 32, file: !82, scope: !9, baseType: !12)
    102 !12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
    103 !13 = !DISubprogram(name: "baz", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: !9, type: !14)
    104 !14 = !DISubroutineType(types: !15)
    105 !15 = !{null, !16, !12}
    106 !16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !9)
    107 !19 = !DIDerivedType(tag: DW_TAG_member, name: "b_ref", line: 12, size: 64, align: 64, offset: 64, file: !82, scope: !5, baseType: !20)
    108 !20 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !9)
    109 !21 = !DISubprogram(name: "bar", line: 13, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: !5, type: !22)
    110 !22 = !DISubroutineType(types: !23)
    111 !23 = !{null, !24, !12}
    112 !24 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !5)
    113 !29 = distinct !DISubprogram(name: "main", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !82, scope: !6, type: !30)
    114 !30 = !DISubroutineType(types: !31)
    115 !31 = !{!12, !12, !32}
    116 !32 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !33)
    117 !33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !34)
    118 !34 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
    119 !35 = !{!36}
    120 !36 = !{} ; previously: invalid DW_TAG_base_type
    121 !37 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3barC1Ei", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !82, scope: null, type: !22, declaration: !21)
    122 !38 = !{!39}
    123 !39 = !{} ; previously: invalid DW_TAG_base_type
    124 !40 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3barC2Ei", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !82, scope: null, type: !22, declaration: !21)
    125 !41 = !{!42}
    126 !42 = !{} ; previously: invalid DW_TAG_base_type
    127 !43 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3bazC1Ei", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !82, scope: null, type: !14, declaration: !13)
    128 !44 = !{!45}
    129 !45 = !{} ; previously: invalid DW_TAG_base_type
    130 !46 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3bazC2Ei", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !82, scope: null, type: !14, declaration: !13)
    131 !49 = !DILocalVariable(name: "argc", line: 16, arg: 1, scope: !29, file: !6, type: !12)
    132 !50 = !DILocation(line: 16, column: 14, scope: !29)
    133 !51 = !DILocalVariable(name: "argv", line: 16, arg: 2, scope: !29, file: !6, type: !32)
    134 !52 = !DILocation(line: 16, column: 27, scope: !29)
    135 !53 = !DILocalVariable(name: "myBar", line: 18, scope: !54, file: !6, type: !5)
    136 !54 = distinct !DILexicalBlock(line: 17, column: 1, file: !82, scope: !29)
    137 !55 = !DILocation(line: 18, column: 9, scope: !54)
    138 !56 = !DILocation(line: 18, column: 17, scope: !54)
    139 !57 = !DILocation(line: 19, column: 5, scope: !54)
    140 !58 = !DILocalVariable(name: "this", line: 13, arg: 1, flags: DIFlagArtificial, scope: !37, file: !6, type: !24)
    141 !59 = !DILocation(line: 13, column: 5, scope: !37)
    142 !60 = !DILocalVariable(name: "x", line: 13, arg: 2, scope: !37, file: !6, type: !12)
    143 !61 = !DILocation(line: 13, column: 13, scope: !37)
    144 !62 = !DILocation(line: 13, column: 34, scope: !37)
    145 !63 = !DILocalVariable(name: "this", line: 13, arg: 1, flags: DIFlagArtificial, scope: !40, file: !6, type: !24)
    146 !64 = !DILocation(line: 13, column: 5, scope: !40)
    147 !65 = !DILocalVariable(name: "x", line: 13, arg: 2, scope: !40, file: !6, type: !12)
    148 !66 = !DILocation(line: 13, column: 13, scope: !40)
    149 !67 = !DILocation(line: 13, column: 33, scope: !40)
    150 !68 = !DILocation(line: 13, column: 34, scope: !69)
    151 !69 = distinct !DILexicalBlock(line: 13, column: 33, file: !82, scope: !40)
    152 !70 = !DILocalVariable(name: "this", line: 6, arg: 1, flags: DIFlagArtificial, scope: !43, file: !6, type: !16)
    153 !71 = !DILocation(line: 6, column: 5, scope: !43)
    154 !72 = !DILocalVariable(name: "a", line: 6, arg: 2, scope: !43, file: !6, type: !12)
    155 !73 = !DILocation(line: 6, column: 13, scope: !43)
    156 !74 = !DILocation(line: 6, column: 24, scope: !43)
    157 !75 = !DILocalVariable(name: "this", line: 6, arg: 1, flags: DIFlagArtificial, scope: !46, file: !6, type: !16)
    158 !76 = !DILocation(line: 6, column: 5, scope: !46)
    159 !77 = !DILocalVariable(name: "a", line: 6, arg: 2, scope: !46, file: !6, type: !12)
    160 !78 = !DILocation(line: 6, column: 13, scope: !46)
    161 !79 = !DILocation(line: 6, column: 23, scope: !46)
    162 !80 = !DILocation(line: 6, column: 24, scope: !81)
    163 !81 = distinct !DILexicalBlock(line: 6, column: 23, file: !82, scope: !46)
    164 !82 = !DIFile(filename: "main.cpp", directory: "/Users/echristo/tmp/bad-struct-ref")
    165 !83 = !{i32 1, !"Debug Info Version", i32 3}
    166