38 lines
1.6 KiB
LLVM
38 lines
1.6 KiB
LLVM
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; RUN: opt -passes=dce -S %s -o - | FileCheck %s
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;; Check that DCE doesn't remove a dbg intrinsic that has an empty metadata
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;; operand.
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; CHECK: call void @llvm.dbg.declare(metadata ![[EMPTY:[0-9]+]],
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; CHECK: ![[EMPTY]] = !{}
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define dso_local void @fun() local_unnamed_addr #0 !dbg !9 {
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entry:
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call void @llvm.dbg.declare(metadata !{}, metadata !13, metadata !DIExpression()), !dbg !15
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ret void, !dbg !16
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
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!llvm.ident = !{!8}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 16.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 8, !"PIC Level", i32 2}
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!6 = !{i32 7, !"PIE Level", i32 2}
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!7 = !{i32 7, !"uwtable", i32 2}
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!8 = !{!"clang version 16.0.0"}
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!9 = distinct !DISubprogram(name: "fun", scope: !1, file: !1, line: 1, type: !10, scopeLine: 1, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
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!10 = !DISubroutineType(types: !11)
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!11 = !{null}
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!12 = !{!13}
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!13 = !DILocalVariable(name: "a", scope: !9, file: !1, line: 1, type: !14)
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!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!15 = !DILocation(line: 1, column: 18, scope: !9)
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!16 = !DILocation(line: 1, column: 21, scope: !9)
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