1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -S -passes=redundant-dbg-inst-elim | FileCheck %s 3; RUN: opt < %s -S -passes=redundant-dbg-inst-elim --try-experimental-debuginfo-iterators | FileCheck %s 4 5; All dbg.value with location "!dbg !19" are redundant in the input. 6; FIXME: We do not handle non-overlapping/overlapping fragments perfectly yet. 7 8define dso_local i16 @main(i16 %a1, i16 %a2) local_unnamed_addr #0 !dbg !7 { 9; CHECK-LABEL: @main( 10; CHECK-NEXT: entry: 11; CHECK-NEXT: br label [[BB0:%.*]] 12; CHECK: bb0: 13; CHECK-NEXT: #dbg_value(i16 13, [[META13:![0-9]+]], !DIExpression(), [[META16:![0-9]+]]) 14; CHECK-NEXT: #dbg_value(i16 14, [[META14:![0-9]+]], !DIExpression(), [[META18:![0-9]+]]) 15; CHECK-NEXT: #dbg_value(i16 13, [[META13]], !DIExpression(), [[META18]]) 16; CHECK-NEXT: #dbg_value(i16 12, [[META12:![0-9]+]], !DIExpression(), [[META18]]) 17; CHECK-NEXT: br label [[BB1:%.*]] 18; CHECK: bb1: 19; CHECK-NEXT: #dbg_value(i16 [[A1:%.*]], [[META14]], !DIExpression(), [[META18]]) 20; CHECK-NEXT: #dbg_value(i16 888, [[META13]], !DIExpression(), [[META18]]) 21; CHECK-NEXT: #dbg_value(i16 [[A2:%.*]], [[META12]], !DIExpression(), [[META18]]) 22; CHECK-NEXT: [[T1:%.*]] = call i16 @bar(i16 0) 23; CHECK-NEXT: #dbg_value(i16 [[T1]], [[META13]], !DIExpression(), [[META18]]) 24; CHECK-NEXT: #dbg_value(i16 [[A2]], [[META12]], !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value), [[META18]]) 25; CHECK-NEXT: br label [[BB2:%.*]] 26; CHECK: bb2: 27; CHECK-NEXT: #dbg_value(i16 [[A1]], [[META13]], !DIExpression(DW_OP_LLVM_fragment, 0, 8), [[META18]]) 28; CHECK-NEXT: #dbg_value(i16 [[A1]], [[META13]], !DIExpression(DW_OP_LLVM_fragment, 8, 8), [[META18]]) 29; CHECK-NEXT: [[T2:%.*]] = call i16 @bar(i16 [[T1]]) 30; CHECK-NEXT: #dbg_value(i16 [[T2]], [[META13]], !DIExpression(DW_OP_LLVM_fragment, 0, 8), [[META18]]) 31; CHECK-NEXT: #dbg_value(i16 [[A1]], [[META13]], !DIExpression(DW_OP_LLVM_fragment, 8, 8), [[META19:![0-9]+]]) 32; CHECK-NEXT: br label [[BB3:%.*]] 33; CHECK: bb3: 34; CHECK-NEXT: #dbg_value(i16 [[A1]], [[META13]], !DIExpression(DW_OP_LLVM_fragment, 0, 8), [[META19]]) 35; CHECK-NEXT: #dbg_value(i16 [[A1]], [[META13]], !DIExpression(), [[META18]]) 36; CHECK-NEXT: br label [[EXIT:%.*]] 37; CHECK: exit: 38; CHECK-NEXT: ret i16 [[T2]] 39; 40entry: 41 br label %bb0 42 43bb0: 44 call void @llvm.dbg.value(metadata i16 999, metadata !12, metadata !DIExpression()), !dbg !19 45 call void @llvm.dbg.value(metadata i16 996, metadata !13, metadata !DIExpression()), !dbg !19 46 call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !17 47 call void @llvm.dbg.value(metadata i16 998, metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !19 48 call void @llvm.dbg.value(metadata i16 14, metadata !14, metadata !DIExpression()), !dbg !16 49 call void @llvm.dbg.value(metadata i16 997, metadata !12, metadata !DIExpression()), !dbg !19 50 call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !16 51 call void @llvm.dbg.value(metadata i16 12, metadata !12, metadata !DIExpression()), !dbg !16 52 br label %bb1 53 54bb1: 55 call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !16 56 call void @llvm.dbg.value(metadata i16 888, metadata !13, metadata !DIExpression()), !dbg !16 57 call void @llvm.dbg.value(metadata i16 %a2, metadata !12, metadata !DIExpression()), !dbg !16 58 %t1 = call i16 @bar(i16 0) 59 call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !19 60 call void @llvm.dbg.value(metadata i16 %t1, metadata !13, metadata !DIExpression()), !dbg !16 61 call void @llvm.dbg.value(metadata i16 %a2, metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !16 62 br label %bb2 63 64bb2: 65 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19 66 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19 67 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16 68 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !16 69 %t2 = call i16 @bar(i16 %t1) 70 call void @llvm.dbg.value(metadata i16 %t2, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16 71 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19 72 br label %bb3 73 74bb3: 75 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19 76 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression()), !dbg !16 77 br label %exit 78 79exit: 80 ret i16 %t2 81} 82 83declare void @llvm.dbg.value(metadata, metadata, metadata) #1 84declare i16 @bar(i16) #2 85 86attributes #0 = { noinline nounwind } 87attributes #1 = { nounwind readnone speculatable willreturn } 88attributes #2 = { noinline nounwind readnone } 89 90!llvm.dbg.cu = !{!0} 91!llvm.module.flags = !{!3, !4, !5} 92!llvm.ident = !{!6} 93 94!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, nameTableKind: None) 95!1 = !DIFile(filename: "foo.c", directory: "") 96!2 = !{} 97!3 = !{i32 7, !"Dwarf Version", i32 4} 98!4 = !{i32 2, !"Debug Info Version", i32 3} 99!5 = !{i32 1, !"wchar_size", i32 1} 100!6 = !{!"clang version 10.0.0"} 101!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !8, scopeLine: 8, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) 102!8 = !DISubroutineType(types: !9) 103!9 = !{!10} 104!10 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed) 105!11 = !{!12, !13, !14} 106!12 = !DILocalVariable(name: "x", scope: !7, file: !1, line: 9, type: !10) 107!13 = !DILocalVariable(name: "y", scope: !7, file: !1, line: 10, type: !10) 108!14 = !DILocalVariable(name: "u", scope: !15, file: !1, line: 11, type: !10) 109!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 3) 110!16 = !DILocation(line: 0, scope: !7) 111!17 = !DILocation(line: 0, scope: !7, inlinedAt: !18) 112!18 = !DILocation(line: 1, scope: !7) 113!19 = !DILocation(line: 77, scope: !7) 114