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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
55 lines
2.4 KiB
LLVM
55 lines
2.4 KiB
LLVM
; RUN: llvm-as %s -o %t.bc
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; RUN: llvm-as %p/Inputs/only-needed-debug-metadata.ll -o %t2.bc
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; Without -only-needed, we need to link in both DISubprogram.
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; RUN: llvm-link -S %t2.bc %t.bc | FileCheck %s
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; CHECK: distinct !DISubprogram(name: "foo"
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; CHECK: distinct !DISubprogram(name: "unused"
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; With -only-needed, we only need to link in foo's DISubprogram.
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; RUN: llvm-link -S -only-needed %t2.bc %t.bc | FileCheck %s -check-prefix=ONLYNEEDED
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; ONLYNEEDED: distinct !DISubprogram(name: "foo"
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; ONLYNEEDED-NOT: distinct !DISubprogram(name: "unused"
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source_filename = "test/Linker/only-needed-debug-metadata.ll"
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@X = global i32 5, !dbg !0
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@U = global i32 6, !dbg !6
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@U_linkonce = linkonce_odr hidden global i32 6
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define i32 @foo() !dbg !12 {
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ret i32 7, !dbg !17
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}
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define i32 @unused() !dbg !18 {
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ret i32 8, !dbg !21
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}
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!9, !10}
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!llvm.ident = !{!11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "X", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "linkused2.c", directory: "/usr/local/google/home/tejohnson/llvm/tmp")
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!4 = !{}
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!5 = !{!0, !6}
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!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = !DIGlobalVariable(name: "U", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !{i32 2, !"Dwarf Version", i32 4}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{!"clang version 3.8.0 (trunk 251407) (llvm/trunk 251401)"}
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!12 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 4, type: !13, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, unit: !2, variables: !15)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!8, !8}
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!15 = !{!16}
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!16 = !DILocalVariable(name: "x", arg: 1, scope: !12, file: !3, line: 4, type: !8)
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!17 = !DILocation(line: 4, column: 13, scope: !12)
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!18 = distinct !DISubprogram(name: "unused", scope: !3, file: !3, line: 8, type: !19, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !2, variables: !4)
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!19 = !DISubroutineType(types: !20)
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!20 = !{!8}
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!21 = !DILocation(line: 9, column: 3, scope: !18)
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