|  | ; RUN: llvm-as %s -disable-output 2>&1 | FileCheck %s | 
|  |  | 
|  | ; CHECK:      function declaration may not have a !dbg attachment | 
|  | declare !dbg !4 void @f1() | 
|  |  | 
|  | ; CHECK:      function must have a single !dbg attachment | 
|  | define void @f2() !dbg !4 !dbg !4 { | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; CHECK:      DISubprogram attached to more than one function | 
|  | define void @f3() !dbg !4 { | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; CHECK:      DISubprogram attached to more than one function | 
|  | define void @f4() !dbg !4 { | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; CHECK-NOT:  !dbg | 
|  | ; CHECK:      function !dbg attachment must be a subprogram | 
|  | ; CHECK-NEXT: void ()* @bar | 
|  | ; CHECK-NEXT: !{{[0-9]+}} = !{} | 
|  | define void @bar() !dbg !3 { | 
|  | unreachable | 
|  | } | 
|  |  | 
|  | ; CHECK: warning: ignoring invalid debug info | 
|  | !llvm.module.flags = !{!0} | 
|  | !0 = !{i32 2, !"Debug Info Version", i32 3} | 
|  |  | 
|  | !llvm.dbg.cu = !{!1} | 
|  | !1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2) | 
|  | !2 = !DIFile(filename: "t.c", directory: "/path/to/dir") | 
|  | !3 = !{} | 
|  | !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !2, unit: !1) |