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1; RUN: opt -passes=newgvn -S %s | FileCheck %s2 3; Check that assignDFSNumbers() in NewGVN salvages the debug values of the4; trivially dead instructions that are marked for deletion.5 6; CHECK: #dbg_value(i8 %tmp, [[META11:![0-9]+]], !DIExpression(DW_OP_constu, 8, DW_OP_eq, DW_OP_stack_value), [[META26:![0-9]+]])7; CHECK: [[META11]] = !DILocalVariable(name: "2"8; CHECK: [[META26]] = !DILocation(line: 29 10define void @test13() !dbg !5 {11entry:12 %tmp = load i8, ptr null, align 113 %tmp2 = icmp eq i8 %tmp, 8, !dbg !1314 #dbg_value(i1 %tmp2, !11, !DIExpression(), !13)15 ret void16}17 18!llvm.dbg.cu = !{!0}19!llvm.debugify = !{!2, !3}20!llvm.module.flags = !{!4}21 22!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)23!1 = !DIFile(filename: "/app/example.ll", directory: "/")24!2 = !{i32 3}25!3 = !{i32 2}26!4 = !{i32 2, !"Debug Info Version", i32 3}27!5 = distinct !DISubprogram(name: "test13", linkageName: "test13", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)28!6 = !DISubroutineType(types: !7)29!7 = !{}30!8 = !{!11}31!10 = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_unsigned)32!11 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 2, type: !10)33!13 = !DILocation(line: 2, column: 1, scope: !5)