39 lines
1.6 KiB
LLVM
39 lines
1.6 KiB
LLVM
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; RUN: opt -mtriple=x86_64-- %s -S --instcombine -o - | FileCheck %s
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; Verify that demanded bits optimisations don't affect debuginfo
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; variable values.
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; Bugzilla #44371
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@a = common dso_local local_unnamed_addr global i32 0, align 4
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define dso_local i32 @p() local_unnamed_addr !dbg !11 {
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entry:
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%conv = load i32, i32* @a, align 4, !dbg !14
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%0 = and i32 %conv, 65535, !dbg !14
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; CHECK: metadata !DIExpression(DW_OP_constu, 65535, DW_OP_and, DW_OP_stack_value))
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call void @llvm.dbg.value(metadata i32 %0, metadata !15, metadata !DIExpression()), !dbg !14
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%1 = lshr i32 %0, 12, !dbg !14
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%2 = and i32 %1, 8, !dbg !14
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%3 = xor i32 %2, 8, !dbg !14
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ret i32 0, !dbg !14
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "instcomnine.ll", directory: "/temp/bz44371")
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!2 = !{}
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!3 = !{!7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !{i32 7, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!""}
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!11 = distinct !DISubprogram(name: "p", scope: !1, file: !1, line: 6, type: !12, scopeLine: 6, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!7}
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!14 = !DILocation(line: 4, column: 35, scope: !11)
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!15 = !DILocalVariable(name: "p_28", arg: 1, scope: !11, file: !1, line: 16, type: !7)
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