1; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck %s
2
3; Just because there are no scopes/locations on any instructions in the
4; function doesn't mean we can't describe the address range of the function.
5; Check that we do that
6
7; CHECK: DW_TAG_subprogram
8; CHECK-NOT: TAG
9; CHECK:   DW_AT_low_pc
10
11; Function Attrs: nounwind uwtable
12define void @f() #0 !dbg !6 {
13entry:
14  ret void
15}
16
17!llvm.dbg.cu = !{!0}
18!llvm.module.flags = !{!3, !4}
19!llvm.ident = !{!5}
20
21!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 289692) (llvm/trunk 289697)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
22!1 = !DIFile(filename: "noscopes.c", directory: "/tmp/dbginfo")
23!2 = !{}
24!3 = !{i32 2, !"Dwarf Version", i32 4}
25!4 = !{i32 2, !"Debug Info Version", i32 3}
26!5 = !{!"clang version 4.0.0 (trunk 289692) (llvm/trunk 289697)"}
27!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, unit: !0, retainedNodes: !2)
28!7 = !DISubroutineType(types: !8)
29!8 = !{null}
30!9 = !DILocation(line: 2, column: 1, scope: !6)
31
32