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
|
; 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(ptr sret(%class.A) %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, ptr %i.addr, align 4
call void @llvm.dbg.declare(metadata ptr %i.addr, metadata !26, metadata !DIExpression()), !dbg !27
call void @llvm.dbg.declare(metadata ptr %j, metadata !28, metadata !DIExpression()), !dbg !30
store i32 0, ptr %j, align 4, !dbg !31
%tmp = load i32, ptr %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, ptr %i.addr, align 4, !dbg !33
%add = add nsw i32 %tmp1, 1, !dbg !33
store i32 %add, ptr %j, align 4, !dbg !33
br label %if.end, !dbg !35
if.end: ; preds = %if.then, %entry
store i1 false, ptr %nrvo, !dbg !36
call void @llvm.dbg.declare(metadata ptr %agg.result, metadata !37, metadata !DIExpression()), !dbg !39
%tmp2 = load i32, ptr %j, align 4, !dbg !40
store i32 %tmp2, ptr %agg.result, align 4, !dbg !40
store i1 true, ptr %nrvo, !dbg !41
store i32 1, ptr %cleanup.dest.slot
%nrvo.val = load i1, ptr %nrvo, !dbg !42
br i1 %nrvo.val, label %nrvo.skipdtor, label %nrvo.unused, !dbg !42
nrvo.unused: ; preds = %if.end
call void @_ZN1AD1Ev(ptr %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(ptr %this) unnamed_addr ssp align 2 !dbg !22 {
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 !43, metadata !DIExpression()), !dbg !44
%this1 = load ptr, ptr %this.addr
call void @_ZN1AD2Ev(ptr %this1), !dbg !53
ret void, !dbg !45
}
define linkonce_odr void @_ZN1AD2Ev(ptr %this) unnamed_addr nounwind ssp align 2 !dbg !25 {
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 !46, metadata !DIExpression()), !dbg !47
%this1 = load ptr, ptr %this.addr
store i32 1, ptr %this1, 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)
|
