; RUN: opt -passes=mem2reg -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ; RUN: opt --try-experimental-debuginfo-iterators -passes=mem2reg -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ;; Test assignment tracking debug info when mem2reg promotes an alloca with ;; stores requiring insertion of a phi. Check the output when the stores are ;; tagged and also untagged (test manually updated for the latter by linking a ;; dbg.assgin for another variable "b" to the alloca). ; CHECK: entry: ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a, metadata ![[B:[0-9]+]] ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a, metadata ![[A:[0-9]+]] ; CHECK: if.then: ; CHECK-NEXT: %add = ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %add, metadata ![[B]] ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %add, metadata ![[A]] ; CHECK: if.else: ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 -1, metadata ![[B]] ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 -1, metadata ![[A]] ; CHECK: if.end: ; CHECK-NEXT: %a.addr.0 = phi i32 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a.addr.0, metadata ![[A]] ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a.addr.0, metadata ![[B]] ; CHECK-DAG: ![[A]] = !DILocalVariable(name: "a", ; CHECK-DAG: ![[B]] = !DILocalVariable(name: "b", ;; $ cat test.cpp ;; int f(int a) { ;; if (a) ;; a += 1; ;; else ;; a = -1; ;; return a; ;; } define dso_local noundef i32 @_Z1fi(i32 noundef %a) #0 !dbg !7 { entry: %a.addr = alloca i32, align 4, !DIAssignID !13 call void @llvm.dbg.assign(metadata i1 undef, metadata !12, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 call void @llvm.dbg.assign(metadata i1 undef, metadata !30, metadata !DIExpression(), metadata !13, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 store i32 %a, ptr %a.addr, align 4, !DIAssignID !19 call void @llvm.dbg.assign(metadata i32 %a, metadata !12, metadata !DIExpression(), metadata !19, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 %0 = load i32, ptr %a.addr, align 4, !dbg !20 %tobool = icmp ne i32 %0, 0, !dbg !20 br i1 %tobool, label %if.then, label %if.else, !dbg !22 if.then: ; preds = %entry %1 = load i32, ptr %a.addr, align 4, !dbg !23 %add = add nsw i32 %1, 1, !dbg !23 store i32 %add, ptr %a.addr, align 4, !dbg !23, !DIAssignID !24 call void @llvm.dbg.assign(metadata i32 %add, metadata !12, metadata !DIExpression(), metadata !24, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 br label %if.end, !dbg !25 if.else: ; preds = %entry store i32 -1, ptr %a.addr, align 4, !dbg !26, !DIAssignID !27 call void @llvm.dbg.assign(metadata i32 -1, metadata !12, metadata !DIExpression(), metadata !27, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 br label %if.end if.end: ; preds = %if.else, %if.then %2 = load i32, ptr %a.addr, align 4, !dbg !28 ret i32 %2, !dbg !29 } declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!2, !3, !4, !5, !1000} !llvm.ident = !{!6} !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) !1 = !DIFile(filename: "test.cpp", directory: "/") !2 = !{i32 7, !"Dwarf Version", i32 5} !3 = !{i32 2, !"Debug Info Version", i32 3} !4 = !{i32 1, !"wchar_size", i32 4} !5 = !{i32 7, !"uwtable", i32 1} !6 = !{!"clang version 14.0.0"} !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) !8 = !DISubroutineType(types: !9) !9 = !{!10, !10} !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !11 = !{!12} !12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 1, type: !10) !13 = distinct !DIAssignID() !14 = !DILocation(line: 0, scope: !7) !19 = distinct !DIAssignID() !20 = !DILocation(line: 2, column: 7, scope: !21) !21 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2, column: 7) !22 = !DILocation(line: 2, column: 7, scope: !7) !23 = !DILocation(line: 3, column: 7, scope: !21) !24 = distinct !DIAssignID() !25 = !DILocation(line: 3, column: 5, scope: !21) !26 = !DILocation(line: 5, column: 7, scope: !21) !27 = distinct !DIAssignID() !28 = !DILocation(line: 6, column: 10, scope: !7) !29 = !DILocation(line: 6, column: 3, scope: !7) !30 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 1, type: !10) !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}