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      1 ; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck --check-prefix=CHECK --check-prefix=CHECK-UNMAT %s
      2 ; RUN: llvm-as < %s | llvm-dis -materialize-metadata | FileCheck --check-prefix=CHECK-UNMAT %s
      3 ; RUN: verify-uselistorder %s
      4 
      5 ; CHECK-UNMAT: @global = global i32 0, !foo [[M2:![0-9]+]], !foo [[M3:![0-9]+]], !baz [[M3]]
      6 @global = global i32 0, !foo !2, !foo !3, !baz !3
      7 
      8 ; CHECK-LABEL: @test
      9 ; CHECK: ret void, !foo [[M0:![0-9]+]], !bar [[M1:![0-9]+]]
     10 define void @test() !dbg !1 {
     11   add i32 2, 1, !bar !0
     12   add i32 1, 2, !foo !1
     13   call void @llvm.dbg.func.start(metadata !"foo")
     14   extractvalue {{i32, i32}, i32} undef, 0, 1, !foo !0
     15   ret void, !foo !0, !bar !1
     16 }
     17 
     18 ; CHECK: define void @test2() !foo [[M2]] !baz [[M3]]
     19 define void @test2() !foo !2 !baz !3 {
     20   unreachable
     21 }
     22 
     23 ; CHECK: define void @test3() !bar [[M3]]
     24 ; CHECK: unreachable, !bar [[M4:![0-9]+]]
     25 define void @test3() !bar !3 {
     26   unreachable, !bar !4
     27 }
     28 
     29 ; CHECK-LABEL: define void @test_attachment_name() {
     30 ; CHECK:   unreachable, !\342abc [[M4]]
     31 define void @test_attachment_name() {
     32   ;; Escape the first character when printing text IR, since it's a digit
     33   unreachable, !\34\32abc !4
     34 }
     35 
     36 ; CHECK-UNMAT: [[M2]] = distinct !{}
     37 ; CHECK-UNMAT: [[M3]] = distinct !{}
     38 ; CHECK: [[M0]] = !DILocation
     39 ; CHECK: [[M1]] = distinct !DISubprogram
     40 ; CHECK: [[M4]] = distinct !{}
     41 
     42 !llvm.module.flags = !{!7}
     43 !llvm.dbg.cu = !{!5}
     44 !0 = !DILocation(line: 662302, column: 26, scope: !1)
     45 !1 = distinct !DISubprogram(name: "foo", isDefinition: true, unit: !5)
     46 !2 = distinct !{}
     47 !3 = distinct !{}
     48 !4 = distinct !{}
     49 !5 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
     50                              file: !6,
     51                              isOptimized: true, flags: "-O2",
     52                              splitDebugFilename: "abc.debug", emissionKind: 2)
     53 !6 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
     54 !7 = !{i32 2, !"Debug Info Version", i32 3}
     55 
     56 declare void @llvm.dbg.func.start(metadata) nounwind readnone
     57 
     58 !foo = !{ !0 }
     59 !bar = !{ !1 }
     60