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114 lines
6.7 KiB
114 lines
6.7 KiB
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -S -redundant-dbg-inst-elim | FileCheck %s
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; RUN: opt < %s -S -passes=redundant-dbg-inst-elim | FileCheck %s
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; All dbg.value with location "!dbg !19" are redundant in the input.
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; FIXME: We do not handle non-overlapping/overlapping fragments perfectly yet.
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define dso_local i16 @main(i16 %a1, i16 %a2) local_unnamed_addr #0 !dbg !7 {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB0:%.*]]
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; CHECK: bb0:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !16
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 14, metadata !14, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 12, metadata !12, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: br label [[BB1:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1:%.*]], metadata !14, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 888, metadata !13, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A2:%.*]], metadata !12, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: [[T1:%.*]] = call i16 @bar(i16 0)
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[T1]], metadata !13, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A2]], metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !18
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !18
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; CHECK-NEXT: [[T2:%.*]] = call i16 @bar(i16 [[T1]])
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[T2]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !18
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
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; CHECK-NEXT: br label [[BB3:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret i16 [[T2]]
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;
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entry:
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br label %bb0
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bb0:
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call void @llvm.dbg.value(metadata i16 999, metadata !12, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.value(metadata i16 996, metadata !13, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !17
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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
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call void @llvm.dbg.value(metadata i16 14, metadata !14, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i16 997, metadata !12, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i16 12, metadata !12, metadata !DIExpression()), !dbg !16
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br label %bb1
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bb1:
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call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i16 888, metadata !13, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i16 %a2, metadata !12, metadata !DIExpression()), !dbg !16
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%t1 = call i16 @bar(i16 0)
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call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !19
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call void @llvm.dbg.value(metadata i16 %t1, metadata !13, metadata !DIExpression()), !dbg !16
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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
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br label %bb2
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bb2:
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !16
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%t2 = call i16 @bar(i16 %t1)
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call void @llvm.dbg.value(metadata i16 %t2, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
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br label %bb3
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bb3:
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
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call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression()), !dbg !16
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br label %exit
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exit:
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ret i16 %t2
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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declare i16 @bar(i16) #2
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attributes #0 = { noinline nounwind }
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attributes #1 = { nounwind readnone speculatable willreturn }
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attributes #2 = { noinline nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!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)
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!1 = !DIFile(filename: "foo.c", directory: "")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 1}
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!6 = !{!"clang version 10.0.0"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !8, scopeLine: 8, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!11 = !{!12, !13, !14}
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!12 = !DILocalVariable(name: "x", scope: !7, file: !1, line: 9, type: !10)
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!13 = !DILocalVariable(name: "y", scope: !7, file: !1, line: 10, type: !10)
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!14 = !DILocalVariable(name: "u", scope: !15, file: !1, line: 11, type: !10)
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!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 3)
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!16 = !DILocation(line: 0, scope: !7)
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!17 = !DILocation(line: 0, scope: !7, inlinedAt: !18)
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!18 = !DILocation(line: 1, scope: !7)
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!19 = !DILocation(line: 77, scope: !7)
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