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5495f08063
This is a follow-up to https://reviews.llvm.org/D29349. It turns out that NeedUpgradeToDIGlobalVariableExpression is always necessary when we encountered a version==0 record because it may always be referenced via a list of globals in a DICompileUnit. My tests weren't good enough to catch this though. To trigger this case, we need much older bitcode produced by LLVM around version 3.7. <rdar://problem/30404262> Differential Revision: https://reviews.llvm.org/D29693 llvm-svn: 294488
32 lines
1.5 KiB
LLVM
32 lines
1.5 KiB
LLVM
; RUN: llvm-dis -o - %s.bc | FileCheck %s
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; CHECK: @g = common global i32 0, align 4, !dbg ![[G:[0-9]+]]
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; CHECK-DAG: ![[G]] = distinct !DIGlobalVariableExpression(var: ![[GVAR:[0-9]+]])
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; CHECK-DAG: distinct !DICompileUnit({{.*}}, globals: ![[GLOBS:[0-9]+]]
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; CHECK-DAG: ![[GLOBS]] = !{![[GEXPR:[0-9]+]]}
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; CHECK-DAG: ![[GEXPR]] = distinct !DIGlobalVariableExpression(var: ![[GVAR]])
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; CHECK-DAG: ![[GVAR]] = !DIGlobalVariable(name: "g",
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; Test the bitcode upgrade for DIGlobalVariable -> DIGlobalVariableExpression.
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; ModuleID = 'a.c'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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@g = common global i32 0, align 4
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (clang-stage1-configure-RA_build 241111)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
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!1 = !DIFile(filename: "a.c", directory: "/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIGlobalVariable(name: "g", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, variable: i32* @g)
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!5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!6 = !{i32 2, !"Dwarf Version", i32 2}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !{i32 1, !"PIC Level", i32 2}
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!9 = !{!"clang version 3.7.0 (clang-stage1-configure-RA_build 241111)"}
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