| ; 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 a single-block |
| ;; alloca. 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-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-DAG: ![[A]] = !DILocalVariable(name: "a", |
| ; CHECK-DAG: ![[B]] = !DILocalVariable(name: "b", |
| |
| ;; $ cat test.cpp |
| ;; int f(int a) { |
| ;; a += 1; |
| ;; return a; |
| ;; } |
| |
| define dso_local noundef i32 @_Z1fi(i32 noundef %a) !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 !24, 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 |
| %add = add nsw i32 %0, 1, !dbg !20 |
| store i32 %add, ptr %a.addr, align 4, !dbg !20, !DIAssignID !21 |
| call void @llvm.dbg.assign(metadata i32 %add, metadata !12, metadata !DIExpression(), metadata !21, metadata ptr %a.addr, metadata !DIExpression()), !dbg !14 |
| %1 = load i32, ptr %a.addr, align 4, !dbg !22 |
| ret i32 %1, !dbg !23 |
| } |
| |
| 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: 5, scope: !7) |
| !21 = distinct !DIAssignID() |
| !22 = !DILocation(line: 3, column: 10, scope: !7) |
| !23 = !DILocation(line: 3, column: 3, scope: !7) |
| !24 = !DILocalVariable(name: "b", scope: !7, file: !1, line: 1, type: !10) |
| !1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} |