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llvm-6502/test/DebugInfo/X86/sret.ll
Duncan P. N. Exon Smith b056aa798d DebugInfo: Move new hierarchy into place 
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464.  I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned.  Let me know if I'm wrong :).

The code changes are fairly mechanical:

  - Bumped the "Debug Info Version".
  - `DIBuilder` now creates the appropriate subclass of `MDNode`.
  - Subclasses of DIDescriptor now expect to hold their "MD"
    counterparts (e.g., `DIBasicType` expects `MDBasicType`).
  - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
    for printing comments.
  - Big update to LangRef to describe the nodes in the new hierarchy.
    Feel free to make it better.

Testcase changes are enormous.  There's an accompanying clang commit on
its way.

If you have out-of-tree debug info testcases, I just broke your build.

  - `upgrade-specialized-nodes.sh` is attached to PR22564.  I used it to
    update all the IR testcases.
  - Unfortunately I failed to find way to script the updates to CHECK
    lines, so I updated all of these by hand.  This was fairly painful,
    since the old CHECKs are difficult to reason about.  That's one of
    the benefits of the new hierarchy.

This work isn't quite finished, BTW.  The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro).  Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers.  I
also expect to make a few schema changes now that it's easier to reason
about everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:24:31 +00:00

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; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
; Based on the debuginfo-tests/sret.cpp code.
; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x51ac5644b1937aa1)
; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x51ac5644b1937aa1)
%class.A = type { i32 (...)**, i32 }
%class.B = type { i8 }
@_ZTV1A = linkonce_odr unnamed_addr constant [4 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*), i8* bitcast (void (%class.A*)* @_ZN1AD2Ev to i8*), i8* bitcast (void (%class.A*)* @_ZN1AD0Ev to i8*)]
@_ZTVN10__cxxabiv117__class_type_infoE = external global i8*
@_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00"
@_ZTI1A = linkonce_odr constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([3 x i8]* @_ZTS1A, i32 0, i32 0) }
@_ZN1AC1Ei = alias void (%class.A*, i32)* @_ZN1AC2Ei
@_ZN1AC1ERKS_ = alias void (%class.A*, %class.A*)* @_ZN1AC2ERKS_
; Function Attrs: nounwind uwtable
define void @_ZN1AC2Ei(%class.A* %this, i32 %i) unnamed_addr #0 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
%i.addr = alloca i32, align 4
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !67, metadata !MDExpression()), !dbg !69
store i32 %i, i32* %i.addr, align 4
call void @llvm.dbg.declare(metadata i32* %i.addr, metadata !70, metadata !MDExpression()), !dbg !71
%this1 = load %class.A*, %class.A** %this.addr
%0 = bitcast %class.A* %this1 to i8***, !dbg !72
store i8** getelementptr inbounds ([4 x i8*]* @_ZTV1A, i64 0, i64 2), i8*** %0, !dbg !72
%m_int = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 1, !dbg !72
%1 = load i32, i32* %i.addr, align 4, !dbg !72
store i32 %1, i32* %m_int, align 4, !dbg !72
ret void, !dbg !73
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
; Function Attrs: nounwind uwtable
define void @_ZN1AC2ERKS_(%class.A* %this, %class.A* %rhs) unnamed_addr #0 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
%rhs.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !74, metadata !MDExpression()), !dbg !75
store %class.A* %rhs, %class.A** %rhs.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %rhs.addr, metadata !76, metadata !MDExpression()), !dbg !77
%this1 = load %class.A*, %class.A** %this.addr
%0 = bitcast %class.A* %this1 to i8***, !dbg !78
store i8** getelementptr inbounds ([4 x i8*]* @_ZTV1A, i64 0, i64 2), i8*** %0, !dbg !78
%m_int = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 1, !dbg !78
%1 = load %class.A*, %class.A** %rhs.addr, align 8, !dbg !78
%m_int2 = getelementptr inbounds %class.A, %class.A* %1, i32 0, i32 1, !dbg !78
%2 = load i32, i32* %m_int2, align 4, !dbg !78
store i32 %2, i32* %m_int, align 4, !dbg !78
ret void, !dbg !79
}
; Function Attrs: nounwind uwtable
define %class.A* @_ZN1AaSERKS_(%class.A* %this, %class.A* %rhs) #0 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
%rhs.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !80, metadata !MDExpression()), !dbg !81
store %class.A* %rhs, %class.A** %rhs.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %rhs.addr, metadata !82, metadata !MDExpression()), !dbg !83
%this1 = load %class.A*, %class.A** %this.addr
%0 = load %class.A*, %class.A** %rhs.addr, align 8, !dbg !84
%m_int = getelementptr inbounds %class.A, %class.A* %0, i32 0, i32 1, !dbg !84
%1 = load i32, i32* %m_int, align 4, !dbg !84
%m_int2 = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 1, !dbg !84
store i32 %1, i32* %m_int2, align 4, !dbg !84
ret %class.A* %this1, !dbg !85
}
; Function Attrs: nounwind uwtable
define i32 @_ZN1A7get_intEv(%class.A* %this) #0 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !86, metadata !MDExpression()), !dbg !87
%this1 = load %class.A*, %class.A** %this.addr
%m_int = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 1, !dbg !88
%0 = load i32, i32* %m_int, align 4, !dbg !88
ret i32 %0, !dbg !88
}
; Function Attrs: uwtable
define void @_ZN1B9AInstanceEv(%class.A* noalias sret %agg.result, %class.B* %this) #2 align 2 {
entry:
%this.addr = alloca %class.B*, align 8
%nrvo = alloca i1
%cleanup.dest.slot = alloca i32
store %class.B* %this, %class.B** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.B** %this.addr, metadata !89, metadata !MDExpression()), !dbg !91
%this1 = load %class.B*, %class.B** %this.addr
store i1 false, i1* %nrvo, !dbg !92
call void @llvm.dbg.declare(metadata %class.A* %agg.result, metadata !93, metadata !MDExpression(DW_OP_deref)), !dbg !92
call void @_ZN1AC1Ei(%class.A* %agg.result, i32 12), !dbg !92
store i1 true, i1* %nrvo, !dbg !94
store i32 1, i32* %cleanup.dest.slot
%nrvo.val = load i1, i1* %nrvo, !dbg !95
br i1 %nrvo.val, label %nrvo.skipdtor, label %nrvo.unused, !dbg !95
nrvo.unused: ; preds = %entry
call void @_ZN1AD2Ev(%class.A* %agg.result), !dbg !96
br label %nrvo.skipdtor, !dbg !96
nrvo.skipdtor: ; preds = %nrvo.unused, %entry
ret void, !dbg !98
}
; Function Attrs: nounwind uwtable
define linkonce_odr void @_ZN1AD2Ev(%class.A* %this) unnamed_addr #0 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !101, metadata !MDExpression()), !dbg !102
%this1 = load %class.A*, %class.A** %this.addr
ret void, !dbg !103
}
; Function Attrs: uwtable
define i32 @main(i32 %argc, i8** %argv) #2 {
entry:
%retval = alloca i32, align 4
%argc.addr = alloca i32, align 4
%argv.addr = alloca i8**, align 8
%b = alloca %class.B, align 1
%return_val = alloca i32, align 4
%temp.lvalue = alloca %class.A, align 8
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
%a = alloca %class.A, align 8
%cleanup.dest.slot = alloca i32
store i32 0, i32* %retval
store i32 %argc, i32* %argc.addr, align 4
call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !104, metadata !MDExpression()), !dbg !105
store i8** %argv, i8*** %argv.addr, align 8
call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !106, metadata !MDExpression()), !dbg !105
call void @llvm.dbg.declare(metadata %class.B* %b, metadata !107, metadata !MDExpression()), !dbg !108
call void @_ZN1BC2Ev(%class.B* %b), !dbg !108
call void @llvm.dbg.declare(metadata i32* %return_val, metadata !109, metadata !MDExpression()), !dbg !110
call void @_ZN1B9AInstanceEv(%class.A* sret %temp.lvalue, %class.B* %b), !dbg !110
%call = invoke i32 @_ZN1A7get_intEv(%class.A* %temp.lvalue)
to label %invoke.cont unwind label %lpad, !dbg !110
invoke.cont: ; preds = %entry
call void @_ZN1AD2Ev(%class.A* %temp.lvalue), !dbg !111
store i32 %call, i32* %return_val, align 4, !dbg !111
call void @llvm.dbg.declare(metadata %class.A* %a, metadata !113, metadata !MDExpression()), !dbg !114
call void @_ZN1B9AInstanceEv(%class.A* sret %a, %class.B* %b), !dbg !114
%0 = load i32, i32* %return_val, align 4, !dbg !115
store i32 %0, i32* %retval, !dbg !115
store i32 1, i32* %cleanup.dest.slot
call void @_ZN1AD2Ev(%class.A* %a), !dbg !116
%1 = load i32, i32* %retval, !dbg !116
ret i32 %1, !dbg !116
lpad: ; preds = %entry
%2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup, !dbg !116
%3 = extractvalue { i8*, i32 } %2, 0, !dbg !116
store i8* %3, i8** %exn.slot, !dbg !116
%4 = extractvalue { i8*, i32 } %2, 1, !dbg !116
store i32 %4, i32* %ehselector.slot, !dbg !116
invoke void @_ZN1AD2Ev(%class.A* %temp.lvalue)
to label %invoke.cont1 unwind label %terminate.lpad, !dbg !116
invoke.cont1: ; preds = %lpad
br label %eh.resume, !dbg !117
eh.resume: ; preds = %invoke.cont1
%exn = load i8*, i8** %exn.slot, !dbg !119
%sel = load i32, i32* %ehselector.slot, !dbg !119
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0, !dbg !119
%lpad.val2 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1, !dbg !119
resume { i8*, i32 } %lpad.val2, !dbg !119
terminate.lpad: ; preds = %lpad
%5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
catch i8* null, !dbg !121
%6 = extractvalue { i8*, i32 } %5, 0, !dbg !121
call void @__clang_call_terminate(i8* %6) #5, !dbg !121
unreachable, !dbg !121
}
; Function Attrs: nounwind uwtable
define linkonce_odr void @_ZN1BC2Ev(%class.B* %this) unnamed_addr #0 align 2 {
entry:
%this.addr = alloca %class.B*, align 8
store %class.B* %this, %class.B** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.B** %this.addr, metadata !123, metadata !MDExpression()), !dbg !124
%this1 = load %class.B*, %class.B** %this.addr
ret void, !dbg !125
}
declare i32 @__gxx_personality_v0(...)
; Function Attrs: noinline noreturn nounwind
define linkonce_odr hidden void @__clang_call_terminate(i8*) #3 {
%2 = call i8* @__cxa_begin_catch(i8* %0) #6
call void @_ZSt9terminatev() #5
unreachable
}
declare i8* @__cxa_begin_catch(i8*)
declare void @_ZSt9terminatev()
; Function Attrs: uwtable
define linkonce_odr void @_ZN1AD0Ev(%class.A* %this) unnamed_addr #2 align 2 {
entry:
%this.addr = alloca %class.A*, align 8
%exn.slot = alloca i8*
%ehselector.slot = alloca i32
store %class.A* %this, %class.A** %this.addr, align 8
call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !126, metadata !MDExpression()), !dbg !127
%this1 = load %class.A*, %class.A** %this.addr
invoke void @_ZN1AD2Ev(%class.A* %this1)
to label %invoke.cont unwind label %lpad, !dbg !128
invoke.cont: ; preds = %entry
%0 = bitcast %class.A* %this1 to i8*, !dbg !129
call void @_ZdlPv(i8* %0) #7, !dbg !129
ret void, !dbg !129
lpad: ; preds = %entry
%1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup, !dbg !131
%2 = extractvalue { i8*, i32 } %1, 0, !dbg !131
store i8* %2, i8** %exn.slot, !dbg !131
%3 = extractvalue { i8*, i32 } %1, 1, !dbg !131
store i32 %3, i32* %ehselector.slot, !dbg !131
%4 = bitcast %class.A* %this1 to i8*, !dbg !131
call void @_ZdlPv(i8* %4) #7, !dbg !131
br label %eh.resume, !dbg !131
eh.resume: ; preds = %lpad
%exn = load i8*, i8** %exn.slot, !dbg !133
%sel = load i32, i32* %ehselector.slot, !dbg !133
%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0, !dbg !133
%lpad.val2 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1, !dbg !133
resume { i8*, i32 } %lpad.val2, !dbg !133
}
; Function Attrs: nobuiltin nounwind
declare void @_ZdlPv(i8*) #4
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" }
attributes #1 = { nounwind readnone }
attributes #2 = { 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" }
attributes #3 = { noinline noreturn nounwind }
attributes #4 = { nobuiltin 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" }
attributes #5 = { noreturn nounwind }
attributes #6 = { nounwind }
attributes #7 = { builtin nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!64, !65}
!llvm.ident = !{!66}
!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 203283) (llvm/trunk 203307)", isOptimized: false, splitDebugFilename: "sret.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !48, globals: !2, imports: !2)
!1 = !MDFile(filename: "sret.cpp", directory: "/usr/local/google/home/echristo/tmp")
!2 = !{}
!3 = !{!4, !37}
!4 = !MDCompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 128, align: 64, file: !1, elements: !5, vtableHolder: !"_ZTS1A", identifier: "_ZTS1A")
!5 = !{!6, !13, !14, !19, !25, !29, !33}
!6 = !MDDerivedType(tag: DW_TAG_member, name: "_vptr$A", size: 64, flags: DIFlagArtificial, file: !1, scope: !7, baseType: !8)
!7 = !MDFile(filename: "sret.cpp", directory: "/usr/local/google/home/echristo/tmp")
!8 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !9)
!9 = !MDDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", size: 64, baseType: !10)
!10 = !MDSubroutineType(types: !11)
!11 = !{!12}
!12 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!13 = !MDDerivedType(tag: DW_TAG_member, name: "m_int", line: 13, size: 32, align: 32, offset: 64, flags: DIFlagProtected, file: !1, scope: !"_ZTS1A", baseType: !12)
!14 = !MDSubprogram(name: "A", line: 4, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !"_ZTS1A", type: !15)
!15 = !MDSubroutineType(types: !16)
!16 = !{null, !17, !12}
!17 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A")
!19 = !MDSubprogram(name: "A", line: 5, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !"_ZTS1A", type: !20)
!20 = !MDSubroutineType(types: !21)
!21 = !{null, !17, !22}
!22 = !MDDerivedType(tag: DW_TAG_reference_type, baseType: !23)
!23 = !MDDerivedType(tag: DW_TAG_const_type, baseType: !"_ZTS1A")
!25 = !MDSubprogram(name: "operator=", linkageName: "_ZN1AaSERKS_", line: 7, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 7, file: !1, scope: !"_ZTS1A", type: !26)
!26 = !MDSubroutineType(types: !27)
!27 = !{!22, !17, !22}
!29 = !MDSubprogram(name: "~A", line: 8, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !1, scope: !"_ZTS1A", type: !30, containingType: !"_ZTS1A")
!30 = !MDSubroutineType(types: !31)
!31 = !{null, !17}
!33 = !MDSubprogram(name: "get_int", linkageName: "_ZN1A7get_intEv", line: 10, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !"_ZTS1A", type: !34)
!34 = !MDSubroutineType(types: !35)
!35 = !{!12, !17}
!37 = !MDCompositeType(tag: DW_TAG_class_type, name: "B", line: 38, size: 8, align: 8, file: !1, elements: !38, identifier: "_ZTS1B")
!38 = !{!39, !44}
!39 = !MDSubprogram(name: "B", line: 41, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 41, file: !1, scope: !"_ZTS1B", type: !40)
!40 = !MDSubroutineType(types: !41)
!41 = !{null, !42}
!42 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1B")
!44 = !MDSubprogram(name: "AInstance", linkageName: "_ZN1B9AInstanceEv", line: 43, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 43, file: !1, scope: !"_ZTS1B", type: !45)
!45 = !MDSubroutineType(types: !46)
!46 = !{!4, !42}
!48 = !{!49, !50, !51, !52, !53, !54, !61, !62, !63}
!49 = !MDSubprogram(name: "A", linkageName: "_ZN1AC2Ei", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 18, file: !1, scope: !"_ZTS1A", type: !15, function: void (%class.A*, i32)* @_ZN1AC2Ei, declaration: !14, variables: !2)
!50 = !MDSubprogram(name: "A", linkageName: "_ZN1AC2ERKS_", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 23, file: !1, scope: !"_ZTS1A", type: !20, function: void (%class.A*, %class.A*)* @_ZN1AC2ERKS_, declaration: !19, variables: !2)
!51 = !MDSubprogram(name: "operator=", linkageName: "_ZN1AaSERKS_", line: 27, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 28, file: !1, scope: !"_ZTS1A", type: !26, function: %class.A* (%class.A*, %class.A*)* @_ZN1AaSERKS_, declaration: !25, variables: !2)
!52 = !MDSubprogram(name: "get_int", linkageName: "_ZN1A7get_intEv", line: 33, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 34, file: !1, scope: !"_ZTS1A", type: !34, function: i32 (%class.A*)* @_ZN1A7get_intEv, declaration: !33, variables: !2)
!53 = !MDSubprogram(name: "AInstance", linkageName: "_ZN1B9AInstanceEv", line: 47, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 48, file: !1, scope: !"_ZTS1B", type: !45, function: void (%class.A*, %class.B*)* @_ZN1B9AInstanceEv, declaration: !44, variables: !2)
!54 = !MDSubprogram(name: "main", line: 53, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 54, file: !1, scope: !7, type: !55, function: i32 (i32, i8**)* @main, variables: !2)
!55 = !MDSubroutineType(types: !56)
!56 = !{!12, !12, !57}
!57 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !58)
!58 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !59)
!59 = !MDDerivedType(tag: DW_TAG_const_type, baseType: !60)
!60 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!61 = !MDSubprogram(name: "~A", linkageName: "_ZN1AD0Ev", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !1, scope: !"_ZTS1A", type: !30, function: void (%class.A*)* @_ZN1AD0Ev, declaration: !29, variables: !2)
!62 = !MDSubprogram(name: "B", linkageName: "_ZN1BC2Ev", line: 41, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 41, file: !1, scope: !"_ZTS1B", type: !40, function: void (%class.B*)* @_ZN1BC2Ev, declaration: !39, variables: !2)
!63 = !MDSubprogram(name: "~A", linkageName: "_ZN1AD2Ev", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !1, scope: !"_ZTS1A", type: !30, function: void (%class.A*)* @_ZN1AD2Ev, declaration: !29, variables: !2)
!64 = !{i32 2, !"Dwarf Version", i32 4}
!65 = !{i32 1, !"Debug Info Version", i32 3}
!66 = !{!"clang version 3.5.0 (trunk 203283) (llvm/trunk 203307)"}
!67 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !49, type: !68)
!68 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1A")
!69 = !MDLocation(line: 0, scope: !49)
!70 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "i", line: 16, arg: 2, scope: !49, file: !7, type: !12)
!71 = !MDLocation(line: 16, scope: !49)
!72 = !MDLocation(line: 18, scope: !49)
!73 = !MDLocation(line: 19, scope: !49)
!74 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !50, type: !68)
!75 = !MDLocation(line: 0, scope: !50)
!76 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "rhs", line: 21, arg: 2, scope: !50, file: !7, type: !22)
!77 = !MDLocation(line: 21, scope: !50)
!78 = !MDLocation(line: 23, scope: !50)
!79 = !MDLocation(line: 24, scope: !50)
!80 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !51, type: !68)
!81 = !MDLocation(line: 0, scope: !51)
!82 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "rhs", line: 27, arg: 2, scope: !51, file: !7, type: !22)
!83 = !MDLocation(line: 27, scope: !51)
!84 = !MDLocation(line: 29, scope: !51)
!85 = !MDLocation(line: 30, scope: !51)
!86 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !52, type: !68)
!87 = !MDLocation(line: 0, scope: !52)
!88 = !MDLocation(line: 35, scope: !52)
!89 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !53, type: !90)
!90 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1B")
!91 = !MDLocation(line: 0, scope: !53)
!92 = !MDLocation(line: 49, scope: !53)
!93 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 49, scope: !53, file: !7, type: !4)
!94 = !MDLocation(line: 50, scope: !53)
!95 = !MDLocation(line: 51, scope: !53)
!96 = !MDLocation(line: 51, scope: !97)
!97 = distinct !MDLexicalBlock(line: 51, column: 0, file: !1, scope: !53)
!98 = !MDLocation(line: 51, scope: !99)
!99 = distinct !MDLexicalBlock(line: 51, column: 0, file: !1, scope: !100)
!100 = distinct !MDLexicalBlock(line: 51, column: 0, file: !1, scope: !53)
!101 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !63, type: !68)
!102 = !MDLocation(line: 0, scope: !63)
!103 = !MDLocation(line: 8, scope: !63)
!104 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argc", line: 53, arg: 1, scope: !54, file: !7, type: !12)
!105 = !MDLocation(line: 53, scope: !54)
!106 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argv", line: 53, arg: 2, scope: !54, file: !7, type: !57)
!107 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 55, scope: !54, file: !7, type: !37)
!108 = !MDLocation(line: 55, scope: !54)
!109 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "return_val", line: 56, scope: !54, file: !7, type: !12)
!110 = !MDLocation(line: 56, scope: !54)
!111 = !MDLocation(line: 56, scope: !112)
!112 = distinct !MDLexicalBlock(line: 56, column: 0, file: !1, scope: !54)
!113 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 58, scope: !54, file: !7, type: !4)
!114 = !MDLocation(line: 58, scope: !54)
!115 = !MDLocation(line: 59, scope: !54)
!116 = !MDLocation(line: 60, scope: !54)
!117 = !MDLocation(line: 60, scope: !118)
!118 = distinct !MDLexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!119 = !MDLocation(line: 60, scope: !120)
!120 = distinct !MDLexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!121 = !MDLocation(line: 60, scope: !122)
!122 = distinct !MDLexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!123 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !62, type: !90)
!124 = !MDLocation(line: 0, scope: !62)
!125 = !MDLocation(line: 41, scope: !62)
!126 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !61, type: !68)
!127 = !MDLocation(line: 0, scope: !61)
!128 = !MDLocation(line: 8, scope: !61)
!129 = !MDLocation(line: 8, scope: !130)
!130 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !61)
!131 = !MDLocation(line: 8, scope: !132)
!132 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !61)
!133 = !MDLocation(line: 8, scope: !134)
!134 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !61)
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