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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
| ; RUN: llc -O0 -fast-isel=true -filetype=obj -o - %s | llvm-dwarfdump -v - | FileCheck %s
|
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
| target triple = "x86_64-apple-macosx10.6.7"
| ; rdar://problem/9321650
|
| ; C++ source:
| ; class A { public: int x; int y; int z; int o; ~A() { x = 1; }};
| ;
| ; A foo(int i) {
| ; int j = 0;
| ; if (i == 42) {
| ; j = i + 1;
| ; };
| ; A my_a;
| ; my_a.x = j;
| ; return my_a;
| ; }
|
| ; CHECK: DW_AT_name {{.*}}"j"
| ; CHECK: DW_TAG_variable
| ; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (
| ; CHECK-NEXT: [0x{{.*}}, 0x{{.*}}): DW_OP_breg7 RSP+8, DW_OP_deref)
| ; CHECK-NEXT: DW_AT_name {{.*}}"my_a"
|
| %class.A = type { i32, i32, i32, i32 }
|
| define void @_Z3fooi(%class.A* sret %agg.result, i32 %i) ssp !dbg !19 {
| entry:
| %i.addr = alloca i32, align 4
| %j = alloca i32, align 4
| %nrvo = alloca i1
| %cleanup.dest.slot = alloca i32
| store i32 %i, i32* %i.addr, align 4
| call void @llvm.dbg.declare(metadata i32* %i.addr, metadata !26, metadata !DIExpression()), !dbg !27
| call void @llvm.dbg.declare(metadata i32* %j, metadata !28, metadata !DIExpression()), !dbg !30
| store i32 0, i32* %j, align 4, !dbg !31
| %tmp = load i32, i32* %i.addr, align 4, !dbg !32
| %cmp = icmp eq i32 %tmp, 42, !dbg !32
| br i1 %cmp, label %if.then, label %if.end, !dbg !32
|
| if.then: ; preds = %entry
| %tmp1 = load i32, i32* %i.addr, align 4, !dbg !33
| %add = add nsw i32 %tmp1, 1, !dbg !33
| store i32 %add, i32* %j, align 4, !dbg !33
| br label %if.end, !dbg !35
|
| if.end: ; preds = %if.then, %entry
| store i1 false, i1* %nrvo, !dbg !36
| call void @llvm.dbg.declare(metadata %class.A* %agg.result, metadata !37, metadata !DIExpression()), !dbg !39
| %tmp2 = load i32, i32* %j, align 4, !dbg !40
| %x = getelementptr inbounds %class.A, %class.A* %agg.result, i32 0, i32 0, !dbg !40
| store i32 %tmp2, i32* %x, align 4, !dbg !40
| store i1 true, i1* %nrvo, !dbg !41
| store i32 1, i32* %cleanup.dest.slot
| %nrvo.val = load i1, i1* %nrvo, !dbg !42
| br i1 %nrvo.val, label %nrvo.skipdtor, label %nrvo.unused, !dbg !42
|
| nrvo.unused: ; preds = %if.end
| call void @_ZN1AD1Ev(%class.A* %agg.result), !dbg !42
| br label %nrvo.skipdtor, !dbg !42
|
| nrvo.skipdtor: ; preds = %nrvo.unused, %if.end
| ret void, !dbg !42
| }
|
| declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
|
| define linkonce_odr void @_ZN1AD1Ev(%class.A* %this) unnamed_addr ssp align 2 !dbg !22 {
| 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 !43, metadata !DIExpression()), !dbg !44
| %this1 = load %class.A*, %class.A** %this.addr
| call void @_ZN1AD2Ev(%class.A* %this1), !dbg !53
| ret void, !dbg !45
| }
|
| define linkonce_odr void @_ZN1AD2Ev(%class.A* %this) unnamed_addr nounwind ssp align 2 !dbg !25 {
| 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 !46, metadata !DIExpression()), !dbg !47
| %this1 = load %class.A*, %class.A** %this.addr
| %x = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 0, !dbg !48
| store i32 1, i32* %x, align 4, !dbg !48
| ret void, !dbg !48
| }
|
| !llvm.dbg.cu = !{!2}
| !llvm.module.flags = !{!52}
|
| !0 = !DISubprogram(name: "~A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !11)
| !1 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 2, size: 128, align: 32, file: !51, scope: !2, elements: !4)
| !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130127)", isOptimized: false, emissionKind: FullDebug, file: !51, enums: !{}, retainedTypes: !{})
| !3 = !DIFile(filename: "a.cc", directory: "/private/tmp")
| !4 = !{!5, !7, !8, !9, !0, !10, !14}
| !5 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 2, size: 32, align: 32, file: !51, scope: !3, baseType: !6)
| !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
| !7 = !DIDerivedType(tag: DW_TAG_member, name: "y", line: 2, size: 32, align: 32, offset: 32, file: !51, scope: !3, baseType: !6)
| !8 = !DIDerivedType(tag: DW_TAG_member, name: "z", line: 2, size: 32, align: 32, offset: 64, file: !51, scope: !3, baseType: !6)
| !9 = !DIDerivedType(tag: DW_TAG_member, name: "o", line: 2, size: 32, align: 32, offset: 96, file: !51, scope: !3, baseType: !6)
| !10 = !DISubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !11)
| !11 = !DISubroutineType(types: !12)
| !12 = !{null, !13}
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !3, baseType: !1)
| !14 = !DISubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !15)
| !15 = !DISubroutineType(types: !16)
| !16 = !{null, !13, !17}
| !17 = !DIDerivedType(tag: DW_TAG_reference_type, scope: !2, baseType: !18)
| !18 = !DIDerivedType(tag: DW_TAG_const_type, file: !3, baseType: !1)
| !19 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !51, scope: !3, type: !20)
| !20 = !DISubroutineType(types: !21)
| !21 = !{!1}
| !22 = distinct !DISubprogram(name: "~A", linkageName: "_ZN1AD1Ev", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !51, scope: !3, type: !23)
| !23 = !DISubroutineType(types: !24)
| !24 = !{null}
| !25 = distinct !DISubprogram(name: "~A", linkageName: "_ZN1AD2Ev", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !51, scope: !3, type: !23)
| !26 = !DILocalVariable(name: "i", line: 4, arg: 1, scope: !19, file: !3, type: !6)
| !27 = !DILocation(line: 4, column: 11, scope: !19)
| !28 = !DILocalVariable(name: "j", line: 5, scope: !29, file: !3, type: !6)
| !29 = distinct !DILexicalBlock(line: 4, column: 14, file: !51, scope: !19)
| !30 = !DILocation(line: 5, column: 7, scope: !29)
| !31 = !DILocation(line: 5, column: 12, scope: !29)
| !32 = !DILocation(line: 6, column: 3, scope: !29)
| !33 = !DILocation(line: 7, column: 5, scope: !34)
| !34 = distinct !DILexicalBlock(line: 6, column: 16, file: !51, scope: !29)
| !35 = !DILocation(line: 8, column: 3, scope: !34)
| !36 = !DILocation(line: 9, column: 9, scope: !29)
| !37 = !DILocalVariable(name: "my_a", line: 9, scope: !29, file: !3, type: !38)
| !38 = !DIDerivedType(tag: DW_TAG_reference_type, file: !3, baseType: !1)
| !39 = !DILocation(line: 9, column: 5, scope: !29)
| !40 = !DILocation(line: 10, column: 3, scope: !29)
| !41 = !DILocation(line: 11, column: 3, scope: !29)
| !42 = !DILocation(line: 12, column: 1, scope: !29)
| !43 = !DILocalVariable(name: "this", line: 2, arg: 1, flags: DIFlagArtificial, scope: !22, file: !3, type: !13)
| !44 = !DILocation(line: 2, column: 47, scope: !22)
| !45 = !DILocation(line: 2, column: 61, scope: !22)
| !46 = !DILocalVariable(name: "this", line: 2, arg: 1, flags: DIFlagArtificial, scope: !25, file: !3, type: !13)
| !47 = !DILocation(line: 2, column: 47, scope: !25)
| !48 = !DILocation(line: 2, column: 54, scope: !49)
| !49 = distinct !DILexicalBlock(line: 2, column: 52, file: !51, scope: !25)
| !51 = !DIFile(filename: "a.cc", directory: "/private/tmp")
| !52 = !{i32 1, !"Debug Info Version", i32 3}
| !53 = !DILocation(line: 0, scope: !22)
|
|