1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
; struct A {
; A();
; virtual ~A();
; };
; struct B : A {
; B();
; virtual ~B();
; };
; B::B() {}
; CHECK: __ZN1BC1Ev:
; CHECK: .loc 1 [[@LINE-2]] 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.
; RUN: llc -O0 -filetype=asm < %s | FileCheck %s
; ModuleID = 'test1.cpp'
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-apple-ios"
%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 {
entry:
tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !30, metadata !38), !dbg !39
%0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, !dbg !40
%call = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #3, !dbg !40
%1 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, i32 0, !dbg !40
store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**), i32 (...)*** %1, align 8, !dbg !40, !tbaa !41
ret %struct.B* %this, !dbg !40
}
declare %struct.A* @_ZN1AC2Ev(%struct.A*)
; Function Attrs: nounwind
define %struct.B* @_ZN1BC1Ev(%struct.B* %this) unnamed_addr #0 align 2 {
entry:
tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !34, metadata !38), !dbg !44
tail call void @llvm.dbg.value(metadata %struct.B* %this, i64 0, metadata !45, metadata !38) #3, !dbg !47
%0 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, !dbg !48
%call.i = tail call %struct.A* @_ZN1AC2Ev(%struct.A* %0) #3, !dbg !48
%1 = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 0, i32 0, !dbg !48
store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV1B, i64 0, i64 2) to i32 (...)**), i32 (...)*** %1, align 8, !dbg !48, !tbaa !41
ret %struct.B* %this, !dbg !46
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
attributes #0 = { nounwind }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!35, !36}
!llvm.ident = !{!37}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !27, globals: !2, imports: !2)
!1 = !DIFile(filename: "<stdin>", directory: "")
!2 = !{}
!3 = !{!4, !13}
!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "B", line: 5, size: 64, align: 64, file: !5, elements: !6, vtableHolder: !"_ZTS1A", identifier: "_ZTS1B")
!5 = !DIFile(filename: "test1.cpp", directory: "")
!6 = !{!7, !8, !12}
!7 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !"_ZTS1B", baseType: !"_ZTS1A")
!8 = !DISubprogram(name: "B", line: 6, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !9)
!9 = !DISubroutineType(types: !10)
!10 = !{null, !11}
!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1B")
!12 = !DISubprogram(name: "~B", line: 7, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !5, scope: !"_ZTS1B", type: !9, containingType: !"_ZTS1B")
!13 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 64, align: 64, file: !5, elements: !14, vtableHolder: !"_ZTS1A", identifier: "_ZTS1A")
!14 = !{!15, !22, !26}
!15 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", size: 64, flags: DIFlagArtificial, file: !5, scope: !16, baseType: !17)
!16 = !DIFile(filename: "test1.cpp", directory: "")
!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, baseType: !18)
!18 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", size: 64, baseType: !19)
!19 = !DISubroutineType(types: !20)
!20 = !{!21}
!21 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!22 = !DISubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !5, scope: !"_ZTS1A", type: !23)
!23 = !DISubroutineType(types: !24)
!24 = !{null, !25}
!25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A")
!26 = !DISubprogram(name: "~A", line: 3, isLocal: false, isDefinition: false, virtuality: DW_VIRTUALITY_virtual, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !5, scope: !"_ZTS1A", type: !23, containingType: !"_ZTS1A")
!27 = !{!28, !32}
!28 = !DISubprogram(name: "B", linkageName: "_ZN1BC2Ev", line: 9, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 9, file: !5, scope: !"_ZTS1B", type: !9, function: %struct.B* (%struct.B*)* @_ZN1BC2Ev, declaration: !8, variables: !29)
!29 = !{!30}
!30 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31)
!31 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1B")
!32 = !DISubprogram(name: "B", linkageName: "_ZN1BC1Ev", line: 9, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 9, file: !5, scope: !"_ZTS1B", type: !9, function: %struct.B* (%struct.B*)* @_ZN1BC1Ev, declaration: !8, variables: !33)
!33 = !{!34}
!34 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !32, type: !31)
!35 = !{i32 2, !"Dwarf Version", i32 4}
!36 = !{i32 2, !"Debug Info Version", i32 3}
!37 = !{!"clang version 3.6.0 (trunk 224279) (llvm/trunk 224283)"}
!38 = !DIExpression()
!39 = !DILocation(line: 0, scope: !28)
!40 = !DILocation(line: 9, scope: !28)
!41 = !{!42, !42, i64 0}
!42 = !{!"vtable pointer", !43, i64 0}
!43 = !{!"Simple C/C++ TBAA"}
!44 = !DILocation(line: 0, scope: !32)
!45 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31)
!46 = !DILocation(line: 9, scope: !32)
!47 = !DILocation(line: 0, scope: !28, inlinedAt: !46)
!48 = !DILocation(line: 9, scope: !28, inlinedAt: !46)
|
