1; RUN: llc -mtriple=arm-apple-darwin -O0 -o - %s | FileCheck %s
2; Use DW_OP_breg in variable's location expression if the variable is in a stack slot.
3
4; CHECK: @ DW_OP_breg
5
6%struct.SVal = type { i8*, i32 }
7
8define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) #0 !dbg !4 {
9entry:
10  %"alloca point" = bitcast i32 0 to i32
11  br label %realentry
12
13realentry:
14  call void @llvm.dbg.value(metadata i32 %i, metadata !21, metadata !DIExpression()), !dbg !22
15  call void @llvm.dbg.value(metadata %struct.SVal* %location, metadata !23, metadata !DIExpression()), !dbg !22
16  %tmp = icmp ne i32 %i, 0, !dbg !25
17  br i1 %tmp, label %bb, label %bb1, !dbg !25
18
19bb:                                               ; preds = %entry
20  %tmp1 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !27
21  %tmp2 = load i32, i32* %tmp1, align 8, !dbg !27
22  %tmp3 = add i32 %tmp2, %i, !dbg !27
23  br label %bb2, !dbg !27
24
25bb1:                                              ; preds = %entry
26  %tmp4 = getelementptr inbounds %struct.SVal, %struct.SVal* %location, i32 0, i32 1, !dbg !28
27  %tmp5 = load i32, i32* %tmp4, align 8, !dbg !28
28  %tmp6 = sub i32 %tmp5, 1, !dbg !28
29  br label %bb2, !dbg !28
30
31bb2:                                              ; preds = %bb1, %bb
32  %.0 = phi i32 [ %tmp3, %bb ], [ %tmp6, %bb1 ]
33  br label %return, !dbg !27
34
35return:                                           ; preds = %bb2
36  ret i32 %.0, !dbg !27
37}
38
39declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
40declare void @llvm.dbg.value(metadata, metadata, metadata) #1
41
42attributes #0 = { nounwind ssp }
43attributes #1 = { nounwind readnone speculatable willreturn }
44
45!llvm.dbg.cu = !{!0}
46!llvm.module.flags = !{!3}
47
48!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
49!1 = !DIFile(filename: "small.cc", directory: "/Users/manav/R8248330")
50!2 = !{}
51!3 = !{i32 1, !"Debug Info Version", i32 3}
52!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi4SVal", scope: !1, file: !1, line: 16, type: !5, virtualIndex: 6, spFlags: DISPFlagDefinition, unit: !0)
53!5 = !DISubroutineType(types: !6)
54!6 = !{!7, !7, !8}
55!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
56!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "SVal", file: !1, line: 1, size: 64, align: 64, elements: !9)
57!9 = !{!10, !12, !14, !18}
58!10 = !DIDerivedType(tag: DW_TAG_member, name: "Data", scope: !8, file: !1, line: 7, baseType: !11, size: 64, align: 64)
59!11 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: null, size: 64, align: 64)
60!12 = !DIDerivedType(tag: DW_TAG_member, name: "Kind", scope: !8, file: !1, line: 8, baseType: !13, size: 32, align: 32, offset: 64)
61!13 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
62!14 = !DISubprogram(name: "SVal", scope: !8, file: !1, line: 11, type: !15, virtualIndex: 6, spFlags: 0)
63!15 = !DISubroutineType(types: !16)
64!16 = !{null, !17}
65!17 = !DIDerivedType(tag: DW_TAG_pointer_type, file: !1, baseType: !8, size: 64, align: 64, flags: DIFlagArtificial)
66!18 = !DISubprogram(name: "~SVal", scope: !8, file: !1, line: 12, type: !19, virtualIndex: 6, spFlags: 0)
67!19 = !DISubroutineType(types: !20)
68!20 = !{null, !17, !7}
69!21 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 16, type: !7)
70!22 = !DILocation(line: 16, scope: !4)
71!23 = !DILocalVariable(name: "location", arg: 2, scope: !4, file: !1, line: 16, type: !24)
72!24 = !DIDerivedType(tag: DW_TAG_reference_type, name: "SVal", scope: !1, file: !1, baseType: !8, size: 32, align: 32)
73!25 = !DILocation(line: 17, scope: !26)
74!26 = distinct !DILexicalBlock(scope: !4, file: !1, line: 16)
75!27 = !DILocation(line: 18, scope: !26)
76!28 = !DILocation(line: 20, scope: !26)
77