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1; RUN: llc -O0 -mtriple=arm-apple-darwin < %s | grep DW_OP_breg
2; Use DW_OP_breg in variable's location expression if the variable is in a stack slot.
3
4target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:64"
5target triple = "arm-apple-darwin"
6
7%struct.SVal = type { i8*, i32 }
8
9define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp !dbg !17 {
10entry:
11  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
12  call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !DIExpression()), !dbg !24
13  call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !DIExpression()), !dbg !24
14  %0 = icmp ne i32 %i, 0, !dbg !27                ; <i1> [#uses=1]
15  br i1 %0, label %bb, label %bb1, !dbg !27
16
17bb:                                               ; preds = %entry
18  %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !29 ; <i32*> [#uses=1]
19  %2 = load i32, i32* %1, align 8, !dbg !29            ; <i32> [#uses=1]
20  %3 = add i32 %2, %i, !dbg !29                   ; <i32> [#uses=1]
21  br label %bb2, !dbg !29
22
23bb1:                                              ; preds = %entry
24  %4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !30 ; <i32*> [#uses=1]
25  %5 = load i32, i32* %4, align 8, !dbg !30            ; <i32> [#uses=1]
26  %6 = sub i32 %5, 1, !dbg !30                    ; <i32> [#uses=1]
27  br label %bb2, !dbg !30
28
29bb2:                                              ; preds = %bb1, %bb
30  %.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ]         ; <i32> [#uses=1]
31  br label %return, !dbg !29
32
33return:                                           ; preds = %bb2
34  ret i32 %.0, !dbg !29
35}
36
37define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2  !dbg !16 {
38entry:
39  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
40  call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !DIExpression()), !dbg !34
41  %0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1]
42  store i8* null, i8** %0, align 8, !dbg !34
43  %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1]
44  store i32 0, i32* %1, align 8, !dbg !34
45  br label %return, !dbg !34
46
47return:                                           ; preds = %entry
48  ret void, !dbg !35
49}
50
51declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
52
53define i32 @main() nounwind ssp !dbg !20 {
54entry:
55  %0 = alloca %struct.SVal                        ; <%struct.SVal*> [#uses=3]
56  %v = alloca %struct.SVal                        ; <%struct.SVal*> [#uses=4]
57  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
58  call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !DIExpression()), !dbg !41
59  call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41
60  %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1]
61  store i32 1, i32* %1, align 8, !dbg !42
62  %2 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
63  %3 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
64  %4 = load i8*, i8** %3, align 8, !dbg !43            ; <i8*> [#uses=1]
65  store i8* %4, i8** %2, align 8, !dbg !43
66  %5 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
67  %6 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
68  %7 = load i32, i32* %6, align 8, !dbg !43            ; <i32> [#uses=1]
69  store i32 %7, i32* %5, align 8, !dbg !43
70  %8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0]
71  call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !DIExpression()), !dbg !43
72  br label %return, !dbg !45
73
74return:                                           ; preds = %entry
75  ret i32 0, !dbg !45
76}
77
78declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
79
80!llvm.dbg.cu = !{!3}
81!llvm.module.flags = !{!49}
82
83!0 = !DISubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !14)
84!1 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 64, align: 64, file: !48, elements: !4)
85!2 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
86!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: FullDebug, file: !48, enums: !47, retainedTypes: !47, globals: !47, imports:  !47)
87!4 = !{!5, !7, !0, !9}
88!5 = !DIDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !48, scope: !1, baseType: !6)
89!6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !48, baseType: null)
90!7 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !48, scope: !1, baseType: !8)
91!8 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
92!9 = !DISubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !10)
93!10 = !DISubroutineType(types: !11)
94!11 = !{null, !12, !13}
95!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !48, baseType: !1)
96!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
97!14 = !DISubroutineType(types: !15)
98!15 = !{null, !12}
99!16 = distinct !DISubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !1, type: !14)
100!17 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !2, type: !18)
101!18 = !DISubroutineType(types: !19)
102!19 = !{!13, !13, !1}
103!20 = distinct !DISubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !48, scope: !2, type: !21)
104!21 = !DISubroutineType(types: !22)
105!22 = !{!13}
106!23 = !DILocalVariable(name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13)
107!24 = !DILocation(line: 16, scope: !17)
108!25 = !DILocalVariable(name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26)
109!26 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 32, align: 32, file: !48, scope: !2, baseType: !1)
110!27 = !DILocation(line: 17, scope: !28)
111!28 = distinct !DILexicalBlock(line: 16, column: 0, file: !2, scope: !17)
112!29 = !DILocation(line: 18, scope: !28)
113!30 = !DILocation(line: 20, scope: !28)
114!31 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32)
115!32 = !DIDerivedType(tag: DW_TAG_const_type, flags: DIFlagArtificial, file: !48, scope: !2, baseType: !33)
116!33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !48, scope: !2, baseType: !1)
117!34 = !DILocation(line: 11, scope: !16)
118!35 = !DILocation(line: 11, scope: !36)
119!36 = distinct !DILexicalBlock(line: 11, column: 0, file: !48, scope: !37)
120!37 = distinct !DILexicalBlock(line: 11, column: 0, file: !48, scope: !16)
121!38 = !DILocalVariable(name: "v", line: 24, scope: !39, file: !2, type: !1)
122!39 = distinct !DILexicalBlock(line: 23, column: 0, file: !48, scope: !40)
123!40 = distinct !DILexicalBlock(line: 23, column: 0, file: !48, scope: !20)
124!41 = !DILocation(line: 24, scope: !39)
125!42 = !DILocation(line: 25, scope: !39)
126!43 = !DILocation(line: 26, scope: !39)
127!44 = !DILocalVariable(name: "k", line: 26, scope: !39, file: !2, type: !13)
128!45 = !DILocation(line: 27, scope: !39)
129!47 = !{}
130!48 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
131!49 = !{i32 1, !"Debug Info Version", i32 3}
132