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1; RUN: llc -mtriple=arm-apple-darwin -O0 -o - %s | FileCheck %s2; Use DW_OP_breg in variable's location expression if the variable is in a stack slot.3 4; CHECK: @ DW_OP_breg5 6%struct.SVal = type { ptr, i32 }7 8define i32 @_Z3fooi4SVal(i32 %i, ptr noalias %location) #0 !dbg !4 {9entry:10 %"alloca point" = bitcast i32 0 to i3211 br label %realentry12 13realentry:14 call void @llvm.dbg.value(metadata i32 %i, metadata !21, metadata !DIExpression()), !dbg !2215 call void @llvm.dbg.value(metadata ptr %location, metadata !23, metadata !DIExpression()), !dbg !2216 %tmp = icmp ne i32 %i, 0, !dbg !2517 br i1 %tmp, label %bb, label %bb1, !dbg !2518 19bb: ; preds = %entry20 %tmp1 = getelementptr inbounds %struct.SVal, ptr %location, i32 0, i32 1, !dbg !2721 %tmp2 = load i32, ptr %tmp1, align 8, !dbg !2722 %tmp3 = add i32 %tmp2, %i, !dbg !2723 br label %bb2, !dbg !2724 25bb1: ; preds = %entry26 %tmp4 = getelementptr inbounds %struct.SVal, ptr %location, i32 0, i32 1, !dbg !2827 %tmp5 = load i32, ptr %tmp4, align 8, !dbg !2828 %tmp6 = sub i32 %tmp5, 1, !dbg !2829 br label %bb2, !dbg !2830 31bb2: ; preds = %bb1, %bb32 %.0 = phi i32 [ %tmp3, %bb ], [ %tmp6, %bb1 ]33 br label %return, !dbg !2734 35return: ; preds = %bb236 ret i32 %.0, !dbg !2737}38 39declare void @llvm.dbg.declare(metadata, metadata, metadata) #140declare void @llvm.dbg.value(metadata, metadata, metadata) #141 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