; RUN: opt -passes=instcombine -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ; RUN: opt --try-experimental-debuginfo-iterators -passes=instcombine -S %s -o - \ ; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" ;; Based on the test remove-redundant-dbg.ll. ;; ;; Check that instcombine does not remove redundant debug intrinsics when ;; assignment tracking is turned off. This test is here to check the existing ;; behaviour is maintained. If it is discovered that it is profitable to remove ;; these intrinsics in instcombine then it's okay to remove this test. ; CHECK: @llvm.dbg.value(metadata i32 undef ; CHECK: @llvm.dbg.value(metadata i32 0 ; CHECK: @llvm.dbg.value(metadata i32 1 define dso_local void @_Z3funv() local_unnamed_addr !dbg !7 { entry: call void @llvm.dbg.value(metadata i32 undef, metadata !11, metadata !DIExpression()), !dbg !14 call void @_Z3extv(), !dbg !15 call void @llvm.dbg.value(metadata i32 0, metadata !11, metadata !DIExpression()), !dbg !14 call void @llvm.dbg.value(metadata i32 1, metadata !11, metadata !DIExpression()), !dbg !14 ret void, !dbg !16 } declare !dbg !17 dso_local void @_Z3extv() local_unnamed_addr declare void @llvm.dbg.value(metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!2, !3, !4, !5} !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: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10) !8 = !DISubroutineType(types: !9) !9 = !{null} !10 = !{!11} !11 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 2, type: !12) !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !13 = distinct !DIAssignID() !14 = !DILocation(line: 0, scope: !7) !15 = !DILocation(line: 2, column: 25, scope: !7) !16 = !DILocation(line: 2, column: 32, scope: !7) !17 = !DISubprogram(name: "ext", linkageName: "_Z3extv", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !18) !18 = !{}