68 lines · plain
1; RUN: opt -passes=mem2reg -S %s -o - \2; RUN: | FileCheck %s --implicit-check-not="#dbg_"3 4;; Test assignment tracking debug info when mem2reg promotes a single-block5;; alloca. Check the output when the stores are tagged and also untagged (test6;; manually updated for the latter by linking a dbg.assgin for another variable7;; "b" to the alloca).8 9; CHECK: entry:10; CHECK-NEXT: #dbg_value(i32 %a, ![[B:[0-9]+]]11; CHECK-NEXT: #dbg_value(i32 %a, ![[A:[0-9]+]]12; CHECK-NEXT: %add =13; CHECK-NEXT: #dbg_value(i32 %add, ![[B]]14; CHECK-NEXT: #dbg_value(i32 %add, ![[A]]15 16; CHECK-DAG: ![[A]] = !DILocalVariable(name: "a",17; CHECK-DAG: ![[B]] = !DILocalVariable(name: "b",18 19;; $ cat test.cpp20;; int f(int a) {21;; a += 1;22;; return a;23;; }24 25define dso_local noundef i32 @_Z1fi(i32 noundef %a) !dbg !7 {26entry:27 %a.addr = alloca i32, align 4, !DIAssignID !1328 call void @llvm.dbg.assign(metadata i1 undef, metadata !12, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !1429 call void @llvm.dbg.assign(metadata i1 undef, metadata !24, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !1430 store i32 %a, ptr %a.addr, align 4, !DIAssignID !1931 call void @llvm.dbg.assign(metadata i32 %a, metadata !12, metadata !DIExpression(), metadata !19, metadata ptr %a.addr, metadata !DIExpression()), !dbg !1432 %0 = load i32, ptr %a.addr, align 4, !dbg !2033 %add = add nsw i32 %0, 1, !dbg !2034 store i32 %add, ptr %a.addr, align 4, !dbg !20, !DIAssignID !2135 call void @llvm.dbg.assign(metadata i32 %add, metadata !12, metadata !DIExpression(), metadata !21, metadata ptr %a.addr, metadata !DIExpression()), !dbg !1436 %1 = load i32, ptr %a.addr, align 4, !dbg !2237 ret i32 %1, !dbg !2338}39 40declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)41 42!llvm.dbg.cu = !{!0}43!llvm.module.flags = !{!2, !3, !4, !5, !1000}44!llvm.ident = !{!6}45 46!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)47!1 = !DIFile(filename: "test.cpp", directory: "/")48!2 = !{i32 7, !"Dwarf Version", i32 5}49!3 = !{i32 2, !"Debug Info Version", i32 3}50!4 = !{i32 1, !"wchar_size", i32 4}51!5 = !{i32 7, !"uwtable", i32 1}52!6 = !{!"clang version 14.0.0"}53!7 = distinct !DISubprogram(name: "f", linkageName: "_Z1fi", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)54!8 = !DISubroutineType(types: !9)55!9 = !{!10, !10}56!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)57!11 = !{!12}58!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10)59!13 = distinct !DIAssignID()60!14 = !DILocation(line: 0, scope: !7)61!19 = distinct !DIAssignID()62!20 = !DILocation(line: 2, column: 5, scope: !7)63!21 = distinct !DIAssignID()64!22 = !DILocation(line: 3, column: 10, scope: !7)65!23 = !DILocation(line: 3, column: 3, scope: !7)66!24 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 1, type: !10)67!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}68