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llvm-project/llvm/test/DebugInfo/X86/sret.ll
Andrew Savonichev c65b4d64d4 [SelectionDAG] Do not second-guess alignment for alloca 
Alignment of an alloca in IR can be lower than the preferred alignment
on purpose, but this override essentially treats the preferred
alignment as the minimum alignment.

The patch changes this behavior to always use the specified
alignment. If alignment is not set explicitly in LLVM IR, it is set to
DL.getPrefTypeAlign(Ty) in computeAllocaDefaultAlign.

Tests are changed as well: explicit alignment is increased to match
the preferred alignment if it changes output, or omitted when it is
hard to determine the right value (e.g. for pointers, some structs, or
weird types).

Differential Revision: https://reviews.llvm.org/D135462
2023-02-09 18:45:20 +03:00

401 lines
23 KiB
LLVM
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; RUN: llc -split-dwarf-file=foo.dwo -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
; RUN: llvm-dwarfdump -debug-info %t | FileCheck %s --check-prefix=CHECK-DWO
; Based on the debuginfo-tests/sret.cpp code.
; CHECK-DWO: DW_AT_GNU_dwo_id (0x7db1cc8453a47c44)
; CHECK-DWO: DW_AT_GNU_dwo_id (0x7db1cc8453a47c44)
; RUN: llc -O0 -fast-isel=true -mtriple=x86_64-apple-darwin -filetype=obj -o - %s | llvm-dwarfdump -debug-info - | FileCheck -check-prefixes=CHECK,FASTISEL %s
; RUN: llc -O0 -fast-isel=false -mtriple=x86_64-apple-darwin -filetype=obj -o - %s | llvm-dwarfdump -debug-info - | FileCheck -check-prefixes=CHECK,SDAG %s
; CHECK: _ZN1B9AInstanceEv
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location (0x00000000
; FASTISEL-NEXT: [{{.*}}, {{.*}}): DW_OP_breg6 RBP-32, DW_OP_deref
; FASTISEL-NEXT: [{{.*}}, {{.*}}): DW_OP_breg5 RDI+0
; FASTISEL-NEXT: [{{.*}}, {{.*}}): DW_OP_breg6 RBP-32, DW_OP_deref)
; SDAG-NEXT: [{{.*}}, {{.*}}): DW_OP_breg5 RDI+0
; SDAG-NEXT: [{{.*}}, {{.*}}): DW_OP_breg6 RBP-32, DW_OP_deref)
; CHECK-NEXT: DW_AT_name {{.*}}"a"
%class.A = type { ptr, i32 }
%class.B = type { i8 }
@_ZTV1A = linkonce_odr unnamed_addr constant [4 x ptr] [ptr null, ptr @_ZTI1A, ptr @_ZN1AD2Ev, ptr @_ZN1AD0Ev]
@_ZTVN10__cxxabiv117__class_type_infoE = external global ptr
@_ZTS1A = linkonce_odr constant [3 x i8] c"1A\00"
@_ZTI1A = linkonce_odr constant { ptr, ptr } { ptr getelementptr inbounds (ptr, ptr @_ZTVN10__cxxabiv117__class_type_infoE, i64 2), ptr @_ZTS1A }
@_ZN1AC1Ei = alias void (ptr, i32), ptr @_ZN1AC2Ei
@_ZN1AC1ERKS_ = alias void (ptr, ptr), ptr @_ZN1AC2ERKS_
; Function Attrs: nounwind uwtable
define void @_ZN1AC2Ei(ptr %this, i32 %i) unnamed_addr #0 align 2 !dbg !49 {
entry:
%this.addr = alloca ptr, align 8
%i.addr = alloca i32, align 4
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !67, metadata !DIExpression()), !dbg !69
store i32 %i, ptr %i.addr, align 4
call void @llvm.dbg.declare(metadata ptr %i.addr, metadata !70, metadata !DIExpression()), !dbg !71
%this1 = load ptr, ptr %this.addr
store ptr getelementptr inbounds ([4 x ptr], ptr @_ZTV1A, i64 0, i64 2), ptr %this1, !dbg !72
%m_int = getelementptr inbounds %class.A, ptr %this1, i32 0, i32 1, !dbg !72
%0 = load i32, ptr %i.addr, align 4, !dbg !72
store i32 %0, ptr %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_(ptr %this, ptr %rhs) unnamed_addr #0 align 2 !dbg !50 {
entry:
%this.addr = alloca ptr, align 8
%rhs.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !74, metadata !DIExpression()), !dbg !75
store ptr %rhs, ptr %rhs.addr, align 8
call void @llvm.dbg.declare(metadata ptr %rhs.addr, metadata !76, metadata !DIExpression()), !dbg !77
%this1 = load ptr, ptr %this.addr
store ptr getelementptr inbounds ([4 x ptr], ptr @_ZTV1A, i64 0, i64 2), ptr %this1, !dbg !78
%m_int = getelementptr inbounds %class.A, ptr %this1, i32 0, i32 1, !dbg !78
%0 = load ptr, ptr %rhs.addr, align 8, !dbg !78
%m_int2 = getelementptr inbounds %class.A, ptr %0, i32 0, i32 1, !dbg !78
%1 = load i32, ptr %m_int2, align 4, !dbg !78
store i32 %1, ptr %m_int, align 4, !dbg !78
ret void, !dbg !79
}
; Function Attrs: nounwind uwtable
define ptr @_ZN1AaSERKS_(ptr %this, ptr %rhs) #0 align 2 !dbg !51 {
entry:
%this.addr = alloca ptr, align 8
%rhs.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !80, metadata !DIExpression()), !dbg !81
store ptr %rhs, ptr %rhs.addr, align 8
call void @llvm.dbg.declare(metadata ptr %rhs.addr, metadata !82, metadata !DIExpression()), !dbg !83
%this1 = load ptr, ptr %this.addr
%0 = load ptr, ptr %rhs.addr, align 8, !dbg !84
%m_int = getelementptr inbounds %class.A, ptr %0, i32 0, i32 1, !dbg !84
%1 = load i32, ptr %m_int, align 4, !dbg !84
%m_int2 = getelementptr inbounds %class.A, ptr %this1, i32 0, i32 1, !dbg !84
store i32 %1, ptr %m_int2, align 4, !dbg !84
ret ptr %this1, !dbg !85
}
; Function Attrs: nounwind uwtable
define i32 @_ZN1A7get_intEv(ptr %this) #0 align 2 !dbg !52 {
entry:
%this.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !86, metadata !DIExpression()), !dbg !87
%this1 = load ptr, ptr %this.addr
%m_int = getelementptr inbounds %class.A, ptr %this1, i32 0, i32 1, !dbg !88
%0 = load i32, ptr %m_int, align 4, !dbg !88
ret i32 %0, !dbg !88
}
; Function Attrs: uwtable
define void @_ZN1B9AInstanceEv(ptr noalias sret(%class.A) %agg.result, ptr %this) #2 align 2 !dbg !53 {
entry:
%this.addr = alloca ptr, align 8
%nrvo = alloca i1, align 1
%cleanup.dest.slot = alloca i32
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !89, metadata !DIExpression()), !dbg !91
%this1 = load ptr, ptr %this.addr
store i1 false, ptr %nrvo, !dbg !92
call void @llvm.dbg.declare(metadata ptr %agg.result, metadata !93, metadata !DIExpression()), !dbg !92
call void @_ZN1AC1Ei(ptr %agg.result, i32 12), !dbg !92
store i1 true, ptr %nrvo, !dbg !94
store i32 1, ptr %cleanup.dest.slot
%nrvo.val = load i1, ptr %nrvo, !dbg !95
br i1 %nrvo.val, label %nrvo.skipdtor, label %nrvo.unused, !dbg !95
nrvo.unused: ; preds = %entry
call void @_ZN1AD2Ev(ptr %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(ptr %this) unnamed_addr #0 align 2 !dbg !63 {
entry:
%this.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !101, metadata !DIExpression()), !dbg !102
%this1 = load ptr, ptr %this.addr
ret void, !dbg !103
}
; Function Attrs: uwtable
define i32 @main(i32 %argc, ptr %argv) #2 personality ptr @__gxx_personality_v0 !dbg !54 {
entry:
%retval = alloca i32, align 4
%argc.addr = alloca i32, align 4
%argv.addr = alloca ptr, align 8
%b = alloca %class.B, align 8
%return_val = alloca i32, align 4
%temp.lvalue = alloca %class.A, align 8
%exn.slot = alloca ptr
%ehselector.slot = alloca i32
%a = alloca %class.A, align 8
%cleanup.dest.slot = alloca i32
store i32 0, ptr %retval
store i32 %argc, ptr %argc.addr, align 4
call void @llvm.dbg.declare(metadata ptr %argc.addr, metadata !104, metadata !DIExpression()), !dbg !105
store ptr %argv, ptr %argv.addr, align 8
call void @llvm.dbg.declare(metadata ptr %argv.addr, metadata !106, metadata !DIExpression()), !dbg !105
call void @llvm.dbg.declare(metadata ptr %b, metadata !107, metadata !DIExpression()), !dbg !108
call void @_ZN1BC2Ev(ptr %b), !dbg !108
call void @llvm.dbg.declare(metadata ptr %return_val, metadata !109, metadata !DIExpression()), !dbg !110
call void @_ZN1B9AInstanceEv(ptr sret(%class.A) %temp.lvalue, ptr %b), !dbg !110
%call = invoke i32 @_ZN1A7get_intEv(ptr %temp.lvalue)
to label %invoke.cont unwind label %lpad, !dbg !110
invoke.cont: ; preds = %entry
call void @_ZN1AD2Ev(ptr %temp.lvalue), !dbg !111
store i32 %call, ptr %return_val, align 4, !dbg !111
call void @llvm.dbg.declare(metadata ptr %a, metadata !113, metadata !DIExpression()), !dbg !114
call void @_ZN1B9AInstanceEv(ptr sret(%class.A) %a, ptr %b), !dbg !114
%0 = load i32, ptr %return_val, align 4, !dbg !115
store i32 %0, ptr %retval, !dbg !115
store i32 1, ptr %cleanup.dest.slot
call void @_ZN1AD2Ev(ptr %a), !dbg !116
%1 = load i32, ptr %retval, !dbg !116
ret i32 %1, !dbg !116
lpad: ; preds = %entry
%2 = landingpad { ptr, i32 }
cleanup, !dbg !116
%3 = extractvalue { ptr, i32 } %2, 0, !dbg !116
store ptr %3, ptr %exn.slot, !dbg !116
%4 = extractvalue { ptr, i32 } %2, 1, !dbg !116
store i32 %4, ptr %ehselector.slot, !dbg !116
invoke void @_ZN1AD2Ev(ptr %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 ptr, ptr %exn.slot, !dbg !119
%sel = load i32, ptr %ehselector.slot, !dbg !119
%lpad.val = insertvalue { ptr, i32 } undef, ptr %exn, 0, !dbg !119
%lpad.val2 = insertvalue { ptr, i32 } %lpad.val, i32 %sel, 1, !dbg !119
resume { ptr, i32 } %lpad.val2, !dbg !119
terminate.lpad: ; preds = %lpad
%5 = landingpad { ptr, i32 }
catch ptr null, !dbg !121
%6 = extractvalue { ptr, i32 } %5, 0, !dbg !121
call void @__clang_call_terminate(ptr %6) #5, !dbg !121
unreachable, !dbg !121
}
; Function Attrs: nounwind uwtable
define linkonce_odr void @_ZN1BC2Ev(ptr %this) unnamed_addr #0 align 2 !dbg !62 {
entry:
%this.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !123, metadata !DIExpression()), !dbg !124
%this1 = load ptr, ptr %this.addr
ret void, !dbg !125
}
declare i32 @__gxx_personality_v0(...)
; Function Attrs: noinline noreturn nounwind
define linkonce_odr hidden void @__clang_call_terminate(ptr) #3 {
%2 = call ptr @__cxa_begin_catch(ptr %0) #6
call void @_ZSt9terminatev() #5
unreachable
}
declare ptr @__cxa_begin_catch(ptr)
declare void @_ZSt9terminatev()
; Function Attrs: uwtable
define linkonce_odr void @_ZN1AD0Ev(ptr %this) unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 !dbg !61 {
entry:
%this.addr = alloca ptr, align 8
%exn.slot = alloca ptr
%ehselector.slot = alloca i32, align 4
store ptr %this, ptr %this.addr, align 8
call void @llvm.dbg.declare(metadata ptr %this.addr, metadata !126, metadata !DIExpression()), !dbg !127
%this1 = load ptr, ptr %this.addr
invoke void @_ZN1AD2Ev(ptr %this1)
to label %invoke.cont unwind label %lpad, !dbg !128
invoke.cont: ; preds = %entry
call void @_ZdlPv(ptr %this1) #7, !dbg !129
ret void, !dbg !129
lpad: ; preds = %entry
%0 = landingpad { ptr, i32 }
cleanup, !dbg !131
%1 = extractvalue { ptr, i32 } %0, 0, !dbg !131
store ptr %1, ptr %exn.slot, !dbg !131
%2 = extractvalue { ptr, i32 } %0, 1, !dbg !131
store i32 %2, ptr %ehselector.slot, !dbg !131
call void @_ZdlPv(ptr %this1) #7, !dbg !131
br label %eh.resume, !dbg !131
eh.resume: ; preds = %lpad
%exn = load ptr, ptr %exn.slot, !dbg !133
%sel = load i32, ptr %ehselector.slot, !dbg !133
%lpad.val = insertvalue { ptr, i32 } undef, ptr %exn, 0, !dbg !133
%lpad.val2 = insertvalue { ptr, i32 } %lpad.val, i32 %sel, 1, !dbg !133
resume { ptr, i32 } %lpad.val2, !dbg !133
}
; Function Attrs: nobuiltin nounwind
declare void @_ZdlPv(ptr) #4
attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "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" "frame-pointer"="all" "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" "frame-pointer"="all" "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 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 203283) (llvm/trunk 203307)", isOptimized: false, splitDebugFilename: "sret.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
!1 = !DIFile(filename: "sret.cpp", directory: "/usr/local/google/home/echristo/tmp")
!2 = !{}
!3 = !{!4, !37}
!4 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 128, align: 64, file: !1, elements: !5, vtableHolder: !4, identifier: "_ZTS1A")
!5 = !{!6, !13, !14, !19, !25, !29, !33}
!6 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", size: 64, flags: DIFlagArtificial, file: !1, scope: !7, baseType: !8)
!7 = !DIFile(filename: "sret.cpp", directory: "/usr/local/google/home/echristo/tmp")
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !9)
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", size: 64, baseType: !10)
!10 = !DISubroutineType(types: !11)
!11 = !{!12}
!12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!13 = !DIDerivedType(tag: DW_TAG_member, name: "m_int", line: 13, size: 32, align: 32, offset: 64, flags: DIFlagProtected, file: !1, scope: !4, baseType: !12)
!14 = !DISubprogram(name: "A", line: 4, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !1, scope: !4, type: !15)
!15 = !DISubroutineType(types: !16)
!16 = !{null, !17, !12}
!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
!19 = !DISubprogram(name: "A", line: 5, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !4, type: !20)
!20 = !DISubroutineType(types: !21)
!21 = !{null, !17, !22}
!22 = !DIDerivedType(tag: DW_TAG_reference_type, size: 64, align: 64, baseType: !23)
!23 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !4)
!25 = !DISubprogram(name: "operator=", linkageName: "_ZN1AaSERKS_", line: 7, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 7, file: !1, scope: !4, type: !26)
!26 = !DISubroutineType(types: !27)
!27 = !{!22, !17, !22}
!29 = !DISubprogram(name: "~A", line: 8, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !1, scope: !4, type: !30, containingType: !4)
!30 = !DISubroutineType(types: !31)
!31 = !{null, !17}
!33 = !DISubprogram(name: "get_int", linkageName: "_ZN1A7get_intEv", line: 10, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !4, type: !34)
!34 = !DISubroutineType(types: !35)
!35 = !{!12, !17}
!37 = !DICompositeType(tag: DW_TAG_class_type, name: "B", line: 38, size: 8, align: 8, file: !1, elements: !38, identifier: "_ZTS1B")
!38 = !{!39, !44}
!39 = !DISubprogram(name: "B", line: 41, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 41, file: !1, scope: !37, type: !40)
!40 = !DISubroutineType(types: !41)
!41 = !{null, !42}
!42 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !37)
!44 = !DISubprogram(name: "AInstance", linkageName: "_ZN1B9AInstanceEv", line: 43, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 43, file: !1, scope: !37, type: !45)
!45 = !DISubroutineType(types: !46)
!46 = !{!4, !42}
!49 = distinct !DISubprogram(name: "A", linkageName: "_ZN1AC2Ei", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 18, file: !1, scope: !4, type: !15, declaration: !14, retainedNodes: !2)
!50 = distinct !DISubprogram(name: "A", linkageName: "_ZN1AC2ERKS_", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 23, file: !1, scope: !4, type: !20, declaration: !19, retainedNodes: !2)
!51 = distinct !DISubprogram(name: "operator=", linkageName: "_ZN1AaSERKS_", line: 27, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 28, file: !1, scope: !4, type: !26, declaration: !25, retainedNodes: !2)
!52 = distinct !DISubprogram(name: "get_int", linkageName: "_ZN1A7get_intEv", line: 33, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 34, file: !1, scope: !4, type: !34, declaration: !33, retainedNodes: !2)
!53 = distinct !DISubprogram(name: "AInstance", linkageName: "_ZN1B9AInstanceEv", line: 47, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 48, file: !1, scope: !37, type: !45, declaration: !44, retainedNodes: !2)
!54 = distinct !DISubprogram(name: "main", line: 53, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 54, file: !1, scope: !7, type: !55, retainedNodes: !2)
!55 = !DISubroutineType(types: !56)
!56 = !{!12, !12, !57}
!57 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !58)
!58 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !59)
!59 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !60)
!60 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!61 = distinct !DISubprogram(name: "~A", linkageName: "_ZN1AD0Ev", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !1, scope: !4, type: !30, declaration: !29, retainedNodes: !2)
!62 = distinct !DISubprogram(name: "B", linkageName: "_ZN1BC2Ev", line: 41, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 41, file: !1, scope: !37, type: !40, declaration: !39, retainedNodes: !2)
!63 = distinct !DISubprogram(name: "~A", linkageName: "_ZN1AD2Ev", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !1, scope: !4, type: !30, declaration: !29, retainedNodes: !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 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !49, type: !68)
!68 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
!69 = !DILocation(line: 0, scope: !49)
!70 = !DILocalVariable(name: "i", line: 16, arg: 2, scope: !49, file: !7, type: !12)
!71 = !DILocation(line: 16, scope: !49)
!72 = !DILocation(line: 18, scope: !49)
!73 = !DILocation(line: 19, scope: !49)
!74 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !50, type: !68)
!75 = !DILocation(line: 0, scope: !50)
!76 = !DILocalVariable(name: "rhs", line: 21, arg: 2, scope: !50, file: !7, type: !22)
!77 = !DILocation(line: 21, scope: !50)
!78 = !DILocation(line: 23, scope: !50)
!79 = !DILocation(line: 24, scope: !50)
!80 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !51, type: !68)
!81 = !DILocation(line: 0, scope: !51)
!82 = !DILocalVariable(name: "rhs", line: 27, arg: 2, scope: !51, file: !7, type: !22)
!83 = !DILocation(line: 27, scope: !51)
!84 = !DILocation(line: 29, scope: !51)
!85 = !DILocation(line: 30, scope: !51)
!86 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !52, type: !68)
!87 = !DILocation(line: 0, scope: !52)
!88 = !DILocation(line: 35, scope: !52)
!89 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !53, type: !90)
!90 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !37)
!91 = !DILocation(line: 0, scope: !53)
!92 = !DILocation(line: 49, scope: !53)
!93 = !DILocalVariable(name: "a", line: 49, scope: !53, file: !7, type: !4)
!94 = !DILocation(line: 50, scope: !53)
!95 = !DILocation(line: 51, scope: !53)
!96 = !DILocation(line: 51, scope: !97)
!97 = distinct !DILexicalBlock(line: 51, column: 0, file: !1, scope: !53)
!98 = !DILocation(line: 51, scope: !99)
!99 = distinct !DILexicalBlock(line: 51, column: 0, file: !1, scope: !100)
!100 = distinct !DILexicalBlock(line: 51, column: 0, file: !1, scope: !53)
!101 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !63, type: !68)
!102 = !DILocation(line: 0, scope: !63)
!103 = !DILocation(line: 8, scope: !63)
!104 = !DILocalVariable(name: "argc", line: 53, arg: 1, scope: !54, file: !7, type: !12)
!105 = !DILocation(line: 53, scope: !54)
!106 = !DILocalVariable(name: "argv", line: 53, arg: 2, scope: !54, file: !7, type: !57)
!107 = !DILocalVariable(name: "b", line: 55, scope: !54, file: !7, type: !37)
!108 = !DILocation(line: 55, scope: !54)
!109 = !DILocalVariable(name: "return_val", line: 56, scope: !54, file: !7, type: !12)
!110 = !DILocation(line: 56, scope: !54)
!111 = !DILocation(line: 56, scope: !112)
!112 = distinct !DILexicalBlock(line: 56, column: 0, file: !1, scope: !54)
!113 = !DILocalVariable(name: "a", line: 58, scope: !54, file: !7, type: !4)
!114 = !DILocation(line: 58, scope: !54)
!115 = !DILocation(line: 59, scope: !54)
!116 = !DILocation(line: 60, scope: !54)
!117 = !DILocation(line: 60, scope: !118)
!118 = distinct !DILexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!119 = !DILocation(line: 60, scope: !120)
!120 = distinct !DILexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!121 = !DILocation(line: 60, scope: !122)
!122 = distinct !DILexicalBlock(line: 60, column: 0, file: !1, scope: !54)
!123 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !62, type: !90)
!124 = !DILocation(line: 0, scope: !62)
!125 = !DILocation(line: 41, scope: !62)
!126 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !61, type: !68)
!127 = !DILocation(line: 0, scope: !61)
!128 = !DILocation(line: 8, scope: !61)
!129 = !DILocation(line: 8, scope: !130)
!130 = distinct !DILexicalBlock(line: 8, column: 0, file: !1, scope: !61)
!131 = !DILocation(line: 8, scope: !132)
!132 = distinct !DILexicalBlock(line: 8, column: 0, file: !1, scope: !61)
!133 = !DILocation(line: 8, scope: !134)
!134 = distinct !DILexicalBlock(line: 8, column: 0, file: !1, scope: !61)
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