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7d6813a6c8
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
31 lines
1.3 KiB
LLVM
31 lines
1.3 KiB
LLVM
; RUN: llc %s -o /dev/null
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; Here variable bar is optimized away. Do not trip over while trying to generate debug info.
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source_filename = "test/DebugInfo/Generic/2009-11-05-DeadGlobalVariable.ll"
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; Function Attrs: nounwind readnone ssp uwtable
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define i32 @foo() #0 !dbg !6 {
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entry:
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ret i32 42, !dbg !11
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}
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attributes #0 = { nounwind readnone ssp uwtable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.0 (trunk 139632)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !3)
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!1 = !DIFile(filename: "fb.c", directory: "/private/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
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!5 = !DIGlobalVariable(name: "bar", scope: !6, file: !1, line: 2, type: !9, isLocal: true, isDefinition: true)
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!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9}
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!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{i32 1, !"Debug Info Version", i32 3}
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!11 = !DILocation(line: 3, column: 3, scope: !12)
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!12 = distinct !DILexicalBlock(scope: !6, file: !1, line: 1, column: 11)
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