1--- |
2  ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
3
4  ; Check that live-debug-values ignores meta instructions.
5
6  ; CHECK-LABEL: bb.0.entry:
7  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
8  ; CHECK-LABEL: bb.1.bb1:
9  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
10  ; CHECK-LABEL: bb.2.bb2:
11  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
12  ; CHECK-LABEL: bb.3.bb3:
13  ; CHECK:       DBG_VALUE $ebx, $noreg, !16, !DIExpression()
14
15  define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
16  entry:
17    br label %bb1, !dbg !17
18  bb1:
19    br label %bb2, !dbg !17
20  bb2:
21    br label %bb3, !dbg !17
22  bb3:
23    ret i32 0, !dbg !17
24  }
25
26  !llvm.dbg.cu = !{!0}
27  !llvm.module.flags = !{!7, !8, !9, !10}
28  !llvm.ident = !{!11}
29  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, debugInfoForProfiling: true, nameTableKind: None)
30  !1 = !DIFile(filename: "main.cpp", directory: "F:\")
31  !2 = !{}
32  !3 = !{!4}
33  !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
34  !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
35  !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
36  !7 = !{i32 2, !"Dwarf Version", i32 4}
37  !8 = !{i32 2, !"Debug Info Version", i32 3}
38  !9 = !{i32 1, !"wchar_size", i32 2}
39  !10 = !{i32 7, !"PIC Level", i32 2}
40  !11 = !{!"clang version 10.0.0"}
41  !12 = distinct !DISubprogram(name: "bb_to_bb", linkageName: "bb_to_bb", scope: !1, file: !1, line: 6, type: !13, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15)
42  !13 = !DISubroutineType(types: !14)
43  !14 = !{!6, !6}
44  !15 = !{!16}
45  !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
46  !17 = !DILocation(line: 10, scope: !12)
47
48...
49---
50name:            _Z8bb_to_bb
51body:             |
52  bb.0.entry:
53    successors: %bb.1
54    $ebx = MOV32ri 0, debug-location !17
55    DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
56  bb.1.bb1:
57    successors: %bb.2
58    renamable $ebx = KILL $ebx
59  bb.2.bb2:
60    successors: %bb.3
61    renamable $ebx = KILL $ebx
62  bb.3.bb3:
63    RETQ $eax, debug-location !17
64...
65