# RUN: llc -o - %s -mtriple=thumbv7-apple-ios -start-before=livedebugvalues | FileCheck %s
# RUN: llc -o - %s -mtriple=thumbv6-apple-ios -start-before=livedebugvalues | FileCheck %s

# struct A {
#   A();
#   virtual ~A();
# };
# struct B : A {
#   B();
#   virtual ~B();
# };
# B::B() {}
# CHECK: __ZN1BC1Ev:
# CHECK:     .loc       1 9 0 prologue_end
# CHECK-NOT: .loc       1 0 0 prologue_end
#
# The location of the prologue_end marker should not be affected by the presence
# of CFI instructions.

--- |
  %struct.B = type { %struct.A }
  %struct.A = type { i32 (...)** }
  
  @_ZTV1B = external unnamed_addr constant [4 x i8*]
  
  ; Function Attrs: nounwind
  define %struct.B* @_ZN1BC2Ev(%struct.B* %this) unnamed_addr #0 align 2 !dbg !31 {
  entry:
    tail call void @llvm.dbg.value(metadata %struct.B* %this, metadata !33, metadata !DIExpression()), !dbg !35
    %0 = bitcast %struct.B* %this to %struct.A*, !dbg !36
    %call = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #0, !dbg !36
    %1 = bitcast %struct.B* %this to i32 (...)***, !dbg !36
    store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i32 0, i32 2) to i32 (...)**), i32 (...)*** %1, align 4, !dbg !36, !tbaa !37
    ret %struct.B* %this, !dbg !36
  }
  
  declare %struct.A* @_ZN1AC2Ev(%struct.A*)
  
  ; Function Attrs: nounwind
  define %struct.B* @_ZN1BC1Ev(%struct.B* %this) unnamed_addr #0 align 2 !dbg !40 {
  entry:
    tail call void @llvm.dbg.value(metadata %struct.B* %this, metadata !42, metadata !DIExpression()), !dbg !43
    tail call void @llvm.dbg.value(metadata %struct.B* %this, metadata !33, metadata !DIExpression()) #0, !dbg !44
    %0 = bitcast %struct.B* %this to %struct.A*, !dbg !46
    %call.i = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #0, !dbg !46
    %1 = bitcast %struct.B* %this to i32 (...)***, !dbg !46
    store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i32 0, i32 2) to i32 (...)**), i32 (...)*** %1, align 4, !dbg !46, !tbaa !37
    ret %struct.B* %this, !dbg !45
  }
  
  ; Function Attrs: nounwind readnone speculatable
  declare void @llvm.dbg.value(metadata, metadata, metadata) #1
  
  declare void @_Unwind_SjLj_Register({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*)
  
  declare void @_Unwind_SjLj_Unregister({ i8*, i32, [4 x i32], i8*, i8*, [5 x i8*] }*)
  
  ; Function Attrs: nounwind readnone
  declare i8* @llvm.frameaddress(i32) #2
  
  ; Function Attrs: nounwind
  declare i8* @llvm.stacksave() #0
  
  ; Function Attrs: nounwind
  declare void @llvm.stackrestore(i8*) #0
  
  ; Function Attrs: nounwind
  declare void @llvm.eh.sjlj.setup.dispatch() #0
  
  ; Function Attrs: nounwind readnone
  declare i8* @llvm.eh.sjlj.lsda() #2
  
  ; Function Attrs: nounwind readnone
  declare void @llvm.eh.sjlj.callsite(i32) #2
  
  ; Function Attrs: nounwind
  declare void @llvm.eh.sjlj.functioncontext(i8*) #0
  
  ; Function Attrs: nounwind
  declare void @llvm.stackprotector(i8*, i8**) #0
  
  attributes #0 = { nounwind }
  attributes #1 = { nounwind readnone speculatable }
  attributes #2 = { nounwind readnone }
  
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!26, !27, !28, !29}
  !llvm.ident = !{!30}
  
  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
  !1 = !DIFile(filename: "<stdin>", directory: "")
  !2 = !{}
  !3 = !{!4, !8}
  !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !5, line: 5, size: 32, align: 32, elements: !6, vtableHolder: !8, identifier: "_ZTS1B")
  !5 = !DIFile(filename: "test1.cpp", directory: "")
  !6 = !{!7, !21, !25}
  !7 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !4, baseType: !8)
  !8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !5, line: 1, size: 32, align: 32, elements: !9, vtableHolder: !8, identifier: "_ZTS1A")
  !9 = !{!10, !16, !20}
  !10 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", scope: !5, file: !5, baseType: !11, size: 32, flags: DIFlagArtificial)
  !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 32)
  !12 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: !13, size: 32)
  !13 = !DISubroutineType(types: !14)
  !14 = !{!15}
  !15 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
  !16 = !DISubprogram(name: "A", scope: !8, file: !5, line: 2, type: !17, isLocal: false, isDefinition: false, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true)
  !17 = !DISubroutineType(types: !18)
  !18 = !{null, !19}
  !19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 32, align: 32, flags: DIFlagArtificial | DIFlagObjectPointer)
  !20 = !DISubprogram(name: "~A", scope: !8, file: !5, line: 3, type: !17, isLocal: false, isDefinition: false, scopeLine: 3, containingType: !8, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: true)
  !21 = !DISubprogram(name: "B", scope: !4, file: !5, line: 6, type: !22, isLocal: false, isDefinition: false, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true)
  !22 = !DISubroutineType(types: !23)
  !23 = !{null, !24}
  !24 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 32, align: 32, flags: DIFlagArtificial | DIFlagObjectPointer)
  !25 = !DISubprogram(name: "~B", scope: !4, file: !5, line: 7, type: !22, isLocal: false, isDefinition: false, scopeLine: 7, containingType: !4, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: true)
  !26 = !{i32 2, !"Dwarf Version", i32 4}
  !27 = !{i32 2, !"Debug Info Version", i32 3}
  !28 = !{i32 1, !"wchar_size", i32 4}
  !29 = !{i32 1, !"min_enum_size", i32 4}
  !30 = !{!"clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)"}
  !31 = distinct !DISubprogram(name: "B", linkageName: "_ZN1BC2Ev", scope: !4, file: !5, line: 9, type: !22, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !21, retainedNodes: !32)
  !32 = !{!33}
  !33 = !DILocalVariable(name: "this", arg: 1, scope: !31, type: !34, flags: DIFlagArtificial | DIFlagObjectPointer)
  !34 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 32, align: 32)
  !35 = !DILocation(line: 0, scope: !31)
  !36 = !DILocation(line: 9, scope: !31)
  !37 = !{!38, !38, i64 0}
  !38 = !{!"vtable pointer", !39, i64 0}
  !39 = !{!"Simple C/C++ TBAA"}
  !40 = distinct !DISubprogram(name: "B", linkageName: "_ZN1BC1Ev", scope: !4, file: !5, line: 9, type: !22, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, declaration: !21, retainedNodes: !41)
  !41 = !{!42}
  !42 = !DILocalVariable(name: "this", arg: 1, scope: !40, type: !34, flags: DIFlagArtificial | DIFlagObjectPointer)
  !43 = !DILocation(line: 0, scope: !40)
  !44 = !DILocation(line: 0, scope: !31, inlinedAt: !45)
  !45 = !DILocation(line: 9, scope: !40)
  !46 = !DILocation(line: 9, scope: !31, inlinedAt: !45)

...
---
name:            _ZN1BC2Ev
alignment:       2
tracksRegLiveness: true
liveins:         
  - { reg: '$r0' }
frameInfo:       
  stackSize:       8
  maxAlignment:    4
  adjustsStack:    true
  hasCalls:        true
  maxCallFrameSize: 0
stack:           
  - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, stack-id: default,
      callee-saved-register: '$lr', callee-saved-restored: false }
  - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, stack-id: default,
      callee-saved-register: '$r4' }
body:             |
  bb.0.entry:
    liveins: $r0, $r4, $lr

    frame-setup tPUSH 14, $noreg, killed $r4, killed $lr, implicit-def $sp, implicit $sp
    frame-setup CFI_INSTRUCTION def_cfa_offset 8
    frame-setup CFI_INSTRUCTION offset $lr, -4
    frame-setup CFI_INSTRUCTION offset $r4, -8
    DBG_VALUE debug-use $r0, debug-use $noreg, !33, !DIExpression(), debug-location !35
    $r4 = tMOVr $r0, 14, $noreg
    DBG_VALUE debug-use $r4, debug-use $noreg, !33, !DIExpression(), debug-location !35
    tBL 14, $noreg, @_ZN1AC2Ev, csr_ios, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0, debug-location !36
    $r0 = t2MOVi16_ga_pcrel target-flags(arm-lo16, arm-nonlazy) @_ZTV1B, 0, debug-location !36
    $r0 = t2MOVTi16_ga_pcrel killed $r0, target-flags(arm-hi16, arm-nonlazy) @_ZTV1B, 0, debug-location !36
    $r0 = tPICADD killed $r0, 0, debug-location !36
    renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg, debug-location !36 :: (load 4 from got)
    renamable $r0, dead $cpsr = nuw tADDi8 killed renamable $r0, 8, 14, $noreg, debug-location !36
    tSTRi killed renamable $r0, renamable $r4, 0, 14, $noreg, debug-location !36 :: (store 4 into %ir.1, !tbaa !37)
    $r0 = tMOVr killed $r4, 14, $noreg, debug-location !36
    tPOP_RET 14, $noreg, def $r4, def $pc, implicit killed $r0, debug-location !36

...
---
name:            _ZN1BC1Ev
alignment:       2
tracksRegLiveness: true
liveins:         
  - { reg: '$r0' }
frameInfo:       
  stackSize:       8
  maxAlignment:    4
  adjustsStack:    true
  hasCalls:        true
  maxCallFrameSize: 0
stack:           
  - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, stack-id: default,
      callee-saved-register: '$lr', callee-saved-restored: false }
  - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, stack-id: default,
      callee-saved-register: '$r4' }
body:             |
  bb.0.entry:
    liveins: $r0, $r4, $lr

    frame-setup tPUSH 14, $noreg, killed $r4, killed $lr, implicit-def $sp, implicit $sp
    frame-setup CFI_INSTRUCTION def_cfa_offset 8
    frame-setup CFI_INSTRUCTION offset $lr, -4
    frame-setup CFI_INSTRUCTION offset $r4, -8
    DBG_VALUE debug-use $r0, debug-use $noreg, !42, !DIExpression(), debug-location !43
    DBG_VALUE debug-use $r0, debug-use $noreg, !33, !DIExpression(), debug-location !44
    $r4 = tMOVr $r0, 14, $noreg
    DBG_VALUE debug-use $r4, debug-use $noreg, !33, !DIExpression(), debug-location !44
    DBG_VALUE debug-use $r4, debug-use $noreg, !42, !DIExpression(), debug-location !43
    tBL 14, $noreg, @_ZN1AC2Ev, csr_ios, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0, debug-location !46
    $r0 = t2MOVi16_ga_pcrel target-flags(arm-lo16, arm-nonlazy) @_ZTV1B, 0, debug-location !46
    $r0 = t2MOVTi16_ga_pcrel killed $r0, target-flags(arm-hi16, arm-nonlazy) @_ZTV1B, 0, debug-location !46
    $r0 = tPICADD killed $r0, 0, debug-location !46
    renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg, debug-location !46 :: (load 4 from got)
    renamable $r0, dead $cpsr = nuw tADDi8 killed renamable $r0, 8, 14, $noreg, debug-location !46
    tSTRi killed renamable $r0, renamable $r4, 0, 14, $noreg, debug-location !46 :: (store 4 into %ir.1, !tbaa !37)
    $r0 = tMOVr killed $r4, 14, $noreg, debug-location !45
    tPOP_RET 14, $noreg, def $r4, def $pc, implicit killed $r0, debug-location !45

...