1 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s | grep DW_OP_breg7
2 ; Use DW_OP_breg7 in variable's location expression if the variable is in a stack slot.
4 %struct.SVal = type { i8*, i32 }
6 define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp !dbg !17 {
8 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
9 call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !DIExpression()), !dbg !24
10 call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !DIExpression()), !dbg !24
11 %0 = icmp ne i32 %i, 0, !dbg !27 ; <i1> [#uses=1]
12 br i1 %0, label %bb, label %bb1, !dbg !27
15 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !29 ; <i32*> [#uses=1]
16 %2 = load i32, i32* %1, align 8, !dbg !29 ; <i32> [#uses=1]
17 %3 = add i32 %2, %i, !dbg !29 ; <i32> [#uses=1]
18 br label %bb2, !dbg !29
21 %4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !30 ; <i32*> [#uses=1]
22 %5 = load i32, i32* %4, align 8, !dbg !30 ; <i32> [#uses=1]
23 %6 = sub i32 %5, 1, !dbg !30 ; <i32> [#uses=1]
24 br label %bb2, !dbg !30
26 bb2: ; preds = %bb1, %bb
27 %.0 = phi i32 [ %3, %bb ], [ %6, %bb1 ] ; <i32> [#uses=1]
28 br label %return, !dbg !29
30 return: ; preds = %bb2
34 define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2 !dbg !16 {
36 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
37 call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !DIExpression()), !dbg !34
38 %0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1]
39 store i8* null, i8** %0, align 8, !dbg !34
40 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1]
41 store i32 0, i32* %1, align 8, !dbg !34
42 br label %return, !dbg !34
44 return: ; preds = %entry
48 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
50 define i32 @main() nounwind ssp !dbg !20 {
52 %0 = alloca %struct.SVal ; <%struct.SVal*> [#uses=3]
53 %v = alloca %struct.SVal ; <%struct.SVal*> [#uses=4]
54 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
55 call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !DIExpression()), !dbg !41
56 call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41
57 %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1]
58 store i32 1, i32* %1, align 8, !dbg !42
59 %2 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
60 %3 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 0, !dbg !43 ; <i8**> [#uses=1]
61 %4 = load i8*, i8** %3, align 8, !dbg !43 ; <i8*> [#uses=1]
62 store i8* %4, i8** %2, align 8, !dbg !43
63 %5 = getelementptr inbounds %struct.SVal, %struct.SVal* %0, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
64 %6 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !43 ; <i32*> [#uses=1]
65 %7 = load i32, i32* %6, align 8, !dbg !43 ; <i32> [#uses=1]
66 store i32 %7, i32* %5, align 8, !dbg !43
67 %8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0]
68 call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !DIExpression()), !dbg !43
69 br label %return, !dbg !45
71 return: ; preds = %entry
75 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
78 !llvm.module.flags = !{!49}
79 !46 = !{!16, !17, !20}
81 !0 = !DISubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !47, scope: !1, type: !14)
82 !1 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 128, align: 64, file: !47, scope: !2, elements: !4)
83 !2 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
84 !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: !47, enums: !48, retainedTypes: !48, imports: null)
85 !4 = !{!5, !7, !0, !9}
86 !5 = !DIDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !47, scope: !1, baseType: !6)
87 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: null)
88 !7 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !47, scope: !1, baseType: !8)
89 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
90 !9 = !DISubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, scopeLine: 12, file: !47, scope: !1, type: !10)
91 !10 = !DISubroutineType(types: !11)
92 !11 = !{null, !12, !13}
93 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !1)
94 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
95 !14 = !DISubroutineType(types: !15)
97 !16 = distinct !DISubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, scopeLine: 11, file: !47, scope: !1, type: !14)
98 !17 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, scopeLine: 16, file: !47, scope: !2, type: !18)
99 !18 = !DISubroutineType(types: !19)
100 !19 = !{!13, !13, !1}
101 !20 = distinct !DISubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, scopeLine: 23, file: !47, scope: !2, type: !21)
102 !21 = !DISubroutineType(types: !22)
104 !23 = !DILocalVariable(name: "i", line: 16, arg: 1, scope: !17, file: !2, type: !13)
105 !24 = !DILocation(line: 16, scope: !17)
106 !25 = !DILocalVariable(name: "location", line: 16, arg: 2, scope: !17, file: !2, type: !26)
107 !26 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 64, align: 64, file: !47, scope: !2, baseType: !1)
108 !27 = !DILocation(line: 17, scope: !28)
109 !28 = distinct !DILexicalBlock(line: 16, column: 0, file: !47, scope: !17)
110 !29 = !DILocation(line: 18, scope: !28)
111 !30 = !DILocation(line: 20, scope: !28)
112 !31 = !DILocalVariable(name: "this", line: 11, arg: 1, scope: !16, file: !2, type: !32)
113 !32 = !DIDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !47, scope: !2, baseType: !33)
114 !33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !47, scope: !2, baseType: !1)
115 !34 = !DILocation(line: 11, scope: !16)
116 !35 = !DILocation(line: 11, scope: !36)
117 !36 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !37)
118 !37 = distinct !DILexicalBlock(line: 11, column: 0, file: !47, scope: !16)
119 !38 = !DILocalVariable(name: "v", line: 24, scope: !39, file: !2, type: !1)
120 !39 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !40)
121 !40 = distinct !DILexicalBlock(line: 23, column: 0, file: !47, scope: !20)
122 !41 = !DILocation(line: 24, scope: !39)
123 !42 = !DILocation(line: 25, scope: !39)
124 !43 = !DILocation(line: 26, scope: !39)
125 !44 = !DILocalVariable(name: "k", line: 26, scope: !39, file: !2, type: !13)
126 !45 = !DILocation(line: 27, scope: !39)
127 !47 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
129 !49 = !{i32 1, !"Debug Info Version", i32 3}