1# RUN: llc -mtriple=aarch64 -run-pass=patchable-function %s -o - | FileCheck %s
2
3# CHECK:    name: empty
4# CHECK:    bb.0.entry
5# CHECK:      PATCHABLE_FUNCTION_ENTER debug-location !DILocation(line: 1,
6# CHECK-NEXT: RET undef $lr, debug-location !DILocation(line: 1,
7
8## Empty entry MBB, no debug location.
9# CHECK:    name: empty_entry
10# CHECK:    bb.0.entry
11# CHECK:      PATCHABLE_FUNCTION_ENTER{{$}}
12# CHECK:    bb.1.here
13
14--- |
15  define void @empty() #0 !dbg !7 {
16  entry:
17    ret void, !dbg !10
18  }
19
20  define void @empty_entry() #0 !dbg !11 {
21  entry:
22    br label %here
23  here:
24    ret void, !dbg !12
25  }
26
27  attributes #0 = { "patchable-function-entry"="1" }
28  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
29  !1 = !DIFile(filename: "a.c", directory: "/tmp")
30  !2 = !{}
31  !3 = !{i32 7, !"Dwarf Version", i32 4}
32  !4 = !{i32 2, !"Debug Info Version", i32 3}
33  !5 = !{i32 1, !"wchar_size", i32 4}
34  !6 = !{!"clang version 11.0.0 "}
35  !7 = distinct !DISubprogram(name: "empty", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
36  !8 = !DISubroutineType(types: !9)
37  !9 = !{null}
38  !10 = !DILocation(line: 1, column: 61, scope: !7)
39  !11 = distinct !DISubprogram(name: "empty_entry", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
40  !12 = !DILocation(line: 2, column: 61, scope: !11)
41
42...
43---
44name:            empty
45alignment:       4
46tracksRegLiveness: true
47body:             |
48  bb.0.entry:
49    liveins: $lr
50    RET undef $lr, debug-location !10
51
52...
53---
54name:            empty_entry
55alignment:       4
56tracksRegLiveness: true
57body:             |
58  bb.0.entry:
59    liveins: $lr
60  bb.1.here:
61    liveins: $lr
62    RET undef $lr, debug-location !12
63
64...
65