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1; RUN: opt -passes=sroa,verify -S %s -o - \2; RUN: | FileCheck %s --implicit-check-not="#dbg_"3 4; Check that single sliced allocas retain their assignment tracking debug info.5 6;; $ cat test.c7;; struct a {8;; char b[8];9;; };10;; int c;11;; void d() {12;; struct a a;13;; memcpy(a.b, 0, c);14;; }15;; $ clang test.c -Xclang -disable-llvm-passes -O2 -g -c -S -emit-llvm -o - \16;; | opt -passes=declare-to-assign -S -o -17 18; CHECK: entry:19; CHECK-NEXT: %a.sroa.0 = alloca i64, align 8, !DIAssignID ![[ID_1:[0-9]+]]20; CHECK-NEXT: #dbg_assign(i1 undef, ![[VAR:[0-9]+]], !DIExpression(), ![[ID_1]], ptr %a.sroa.0, !DIExpression(),21 22target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"23 24%struct.a = type { [8 x i8] }25 26@c = dso_local global i32 0, align 4, !dbg !027 28define dso_local void @d() !dbg !11 {29entry:30 %a = alloca %struct.a, align 1, !DIAssignID !2331 call void @llvm.dbg.assign(metadata i1 undef, metadata !15, metadata !DIExpression(), metadata !23, metadata ptr %a, metadata !DIExpression()), !dbg !2432 %0 = bitcast ptr %a to ptr, !dbg !2533 call void @llvm.lifetime.start.p0(i64 8, ptr %0), !dbg !2534 %b = getelementptr inbounds %struct.a, ptr %a, i32 0, i32 0, !dbg !2635 %arraydecay = getelementptr inbounds [8 x i8], ptr %b, i64 0, i64 0, !dbg !2736 %1 = load i32, ptr @c, align 4, !dbg !2837 %conv = sext i32 %1 to i64, !dbg !2838 call void @llvm.memcpy.p0.p0.i64(ptr align 1 %arraydecay, ptr align 1 null, i64 %conv, i1 false), !dbg !2739 %2 = bitcast ptr %a to ptr, !dbg !3340 call void @llvm.lifetime.end.p0(i64 8, ptr %2), !dbg !3341 ret void, !dbg !3342}43 44declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)45declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg)46declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)47declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)48 49!llvm.dbg.cu = !{!2}50!llvm.module.flags = !{!7, !8, !9, !1000}51!llvm.ident = !{!10}52 53!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())54!1 = distinct !DIGlobalVariable(name: "c", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)55!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)56!3 = !DIFile(filename: "test.c", directory: "/")57!4 = !{}58!5 = !{!0}59!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)60!7 = !{i32 7, !"Dwarf Version", i32 4}61!8 = !{i32 2, !"Debug Info Version", i32 3}62!9 = !{i32 1, !"wchar_size", i32 4}63!10 = !{!"clang version 12.0.0"}64!11 = distinct !DISubprogram(name: "d", scope: !3, file: !3, line: 5, type: !12, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !14)65!12 = !DISubroutineType(types: !13)66!13 = !{null}67!14 = !{!15}68!15 = !DILocalVariable(name: "a", scope: !11, file: !3, line: 6, type: !16)69!16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "a", file: !3, line: 1, size: 64, elements: !17)70!17 = !{!18}71!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !16, file: !3, line: 2, baseType: !19, size: 64)72!19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !20, size: 64, elements: !21)73!20 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)74!21 = !{!22}75!22 = !DISubrange(count: 8)76!23 = distinct !DIAssignID()77!24 = !DILocation(line: 0, scope: !11)78!25 = !DILocation(line: 6, column: 3, scope: !11)79!26 = !DILocation(line: 7, column: 12, scope: !11)80!27 = !DILocation(line: 7, column: 3, scope: !11)81!28 = !DILocation(line: 7, column: 18, scope: !11)82!33 = !DILocation(line: 8, column: 1, scope: !11)83!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}84