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      1 ; RUN: llvm-link %s %p/2011-08-04-Metadata2.ll -o %t.bc
      2 ; RUN: llvm-dis < %t.bc | FileCheck %s
      3 ; Test if internal global variable's debug info is merged appropriately or not.
      4 
      5 ; CHECK: @x = internal global i32 0, align 4, !dbg [[DI1:![0-9]+]]
      6 ; CHECK: @x.1 = internal global i32 0, align 4, !dbg [[DI2:![0-9]+]]
      7 
      8 ; CHECK: [[DI1]] = !DIGlobalVariableExpression(var: [[V1:.*]], expr: !DIExpression())
      9 ; CHECK: [[V1]] = !DIGlobalVariable(name: "x",
     10 ; CHECK-NOT:                        linkageName:
     11 ; CHECK: [[DI2]] = !DIGlobalVariableExpression(var: [[V2:.*]], expr: !DIExpression())
     12 ; CHECK: [[V2]] = !DIGlobalVariable(name: "x",
     13 ; CHECK-NOT:                        linkageName:
     14 source_filename = "test/Linker/2011-08-04-Metadata.ll"
     15 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
     16 target triple = "x86_64-apple-macosx10.7.0"
     17 
     18 @x = internal global i32 0, align 4, !dbg !0
     19 
     20 ; Function Attrs: nounwind ssp uwtable
     21 define void @foo() #0 !dbg !8 {
     22 entry:
     23   store i32 1, i32* @x, align 4, !dbg !11
     24   ret void, !dbg !11
     25 }
     26 
     27 attributes #0 = { nounwind ssp uwtable }
     28 
     29 !llvm.dbg.cu = !{!2}
     30 !llvm.module.flags = !{!7}
     31 
     32 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
     33 !1 = !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 2, type: !6, isLocal: true, isDefinition: true)
     34 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.0 ()", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5)
     35 !3 = !DIFile(filename: "/tmp/one.c", directory: "/Volumes/Lalgate/Slate/D")
     36 !4 = !{}
     37 !5 = !{!0}
     38 !6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
     39 !7 = !{i32 1, !"Debug Info Version", i32 3}
     40 !8 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 3, type: !9, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2)
     41 !9 = !DISubroutineType(types: !10)
     42 !10 = !{null}
     43 !11 = !DILocation(line: 3, column: 14, scope: !12)
     44 !12 = distinct !DILexicalBlock(scope: !8, file: !3, line: 3, column: 12)
     45 
     46