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1; RUN: llc %s -stop-after=finalize-isel -o - | FileCheck %s2 3 4 5;; Check that a zero-sized fragment (the final dbg.assign) is ignored by6;; AssignmentTrackingAnalysis.7 8; CHECK: stack:9; CHECK-NEXT: - { id: 0, name: m4, type: default, offset: 0, size: 32, alignment: 8,10; CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,11; CHECK-NEXT: debug-info-variable: '![[#]]', debug-info-expression: '!DIExpression()',12; CHECK-NEXT: debug-info-location: '![[#]]' }13 14target triple = "x86_64-unknown-unknown"15 16%struct.mm = type { [8 x i32] }17 18@m1 = local_unnamed_addr global %struct.mm zeroinitializer, align 4, !dbg !019 20define dso_local i32 @main() local_unnamed_addr #0 !dbg !23 {21entry:22 %m4 = alloca %struct.mm, align 8, !DIAssignID !2823 call void @llvm.dbg.assign(metadata i1 undef, metadata !27, metadata !DIExpression(), metadata !28, metadata ptr %m4, metadata !DIExpression()), !dbg !2924 call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(32) %m4, ptr noundef nonnull align 4 dereferenceable(32) @m1, i64 32, i1 false), !dbg !31, !DIAssignID !3625 call void @llvm.dbg.assign(metadata i1 undef, metadata !27, metadata !DIExpression(), metadata !36, metadata ptr %m4, metadata !DIExpression()), !dbg !2926 call void @llvm.dbg.assign(metadata i1 undef, metadata !27, metadata !DIExpression(DW_OP_LLVM_fragment, 64, 0), metadata !43, metadata ptr %m4, metadata !DIExpression(DW_OP_plus_uconst, 8)), !dbg !2927 ret i32 0, !dbg !4528}29 30 31declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #232declare void @foo(i32 noundef) local_unnamed_addr #333declare i32 @bar(ptr noundef byval(%struct.mm) align 8, ptr noundef byval(%struct.mm) align 8) local_unnamed_addr #334declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #435 36!llvm.dbg.cu = !{!2}37!llvm.module.flags = !{!19, !20, !21}38!llvm.ident = !{!22}39 40!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())41!1 = distinct !DIGlobalVariable(name: "m1", scope: !2, file: !9, line: 1, type: !10, isLocal: false, isDefinition: true)42!2 = distinct !DICompileUnit(language: DW_LANG_C11, file: !3, producer: "clang version 17.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !4, globals: !6, splitDebugInlining: false, nameTableKind: None)43!3 = !DIFile(filename: "<stdin>", directory: "/")44!4 = !{!5}45!5 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)46!6 = !{!0}47!9 = !DIFile(filename: "repro.c", directory: "/")48!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mm", file: !9, line: 1, size: 256, elements: !11)49!11 = !{!12}50!12 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !10, file: !9, line: 1, baseType: !13, size: 256)51!13 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 256, elements: !15)52!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)53!15 = !{!16}54!16 = !DISubrange(count: 8)55!19 = !{i32 2, !"Debug Info Version", i32 3}56!20 = !{i32 1, !"wchar_size", i32 4}57!21 = !{i32 7, !"debug-info-assignment-tracking", i1 true}58!22 = !{!"clang version 17.0.0"}59!23 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 7, type: !24, scopeLine: 8, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !26)60!24 = !DISubroutineType(types: !25)61!25 = !{!14}62!26 = !{!27}63!27 = !DILocalVariable(name: "m4", scope: !23, file: !9, line: 9, type: !10)64!28 = distinct !DIAssignID()65!29 = !DILocation(line: 0, scope: !23)66!31 = !DILocation(line: 11, column: 8, scope: !23)67!36 = distinct !DIAssignID()68!43 = distinct !DIAssignID()69!45 = !DILocation(line: 19, column: 3, scope: !23)70