2 ; RUN: llc %s -march=x86-64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE
4 ; Check that DBG_VALUE instructions are prapogated into a loop that has two
5 ; backedges and beyond.
7 ; CHECK-LABEL: bb.0.entry:
8 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()
9 ; CHECK-LABEL: bb.1.bb1:
10 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()
11 ; CHECK-LABEL: bb.2.bb2:
12 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()
13 ; CHECK-LABEL: bb.3.bb3:
14 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()
15 ; CHECK-LABEL: bb.4.bb4:
16 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()
18 define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {
20 br label %bb1, !dbg !17
22 br label %bb2, !dbg !17
24 br label %bb3, !dbg !17
26 br label %bb4, !dbg !17
32 !llvm.module.flags = !{!7, !8, !9, !10}
34 !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)
35 !1 = !DIFile(filename: "main.cpp", directory: "F:\")
38 !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
39 !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)
40 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
41 !7 = !{i32 2, !"Dwarf Version", i32 4}
42 !8 = !{i32 2, !"Debug Info Version", i32 3}
43 !9 = !{i32 1, !"wchar_size", i32 2}
44 !10 = !{i32 7, !"PIC Level", i32 2}
45 !11 = !{!"clang version 10.0.0"}
46 !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)
47 !13 = !DISubroutineType(types: !14)
50 !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)
51 !17 = !DILocation(line: 10, scope: !12)
59 $ebx = MOV32ri 0, debug-location !17
60 DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !17
63 $eax = MOV32ri 0, debug-location !17
65 successors: %bb.1, %bb.3
66 $eax = MOV32ri 0, debug-location !17
67 JCC_1 %bb.1, 4, implicit killed $eflags
69 successors: %bb.1, %bb.4
70 $eax = MOV32ri 0, debug-location !17
71 JCC_1 %bb.1, 4, implicit killed $eflags
73 RETQ $eax, debug-location !17