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1--- |2 ; RUN: llc %s -mtriple=x86_64 -run-pass=livedebugvalues -o - | FileCheck %s -implicit-check-not=DBG_VALUE3 4 ; Check that DBG_VALUE instructions are propagated into a loop with5 ; diamond pattern but not beyond.6 7 ; CHECK-LABEL: bb.0.entry:8 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression()9 ; CHECK-LABEL: bb.1.bb1:10 ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression()11 ; CHECK-LABEL: bb.2.bb2:12 ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression()13 ; CHECK-LABEL: bb.3.bb3:14 ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression()15 ; CHECK-LABEL: bb.4.bb4:16 ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression()17 ; CHECK-LABEL: bb.5.bb5:18 ; CHECK: DBG_VALUE $eax, $noreg, !16, !DIExpression()19 20 define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {21 entry:22 br label %bb1, !dbg !1723 bb1:24 br label %bb2, !dbg !1725 bb2:26 br label %bb3, !dbg !1727 bb3:28 br label %bb3, !dbg !1729 bb4:30 br label %bb3, !dbg !1731 bb5:32 ret i32 0, !dbg !1733 }34 35 !llvm.dbg.cu = !{!0}36 !llvm.module.flags = !{!7, !8, !9, !10}37 !llvm.ident = !{!11}38 !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)39 !1 = !DIFile(filename: "main.cpp", directory: "F:\")40 !2 = !{}41 !3 = !{!4}42 !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())43 !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)44 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)45 !7 = !{i32 2, !"Dwarf Version", i32 4}46 !8 = !{i32 2, !"Debug Info Version", i32 3}47 !9 = !{i32 1, !"wchar_size", i32 2}48 !10 = !{i32 7, !"PIC Level", i32 2}49 !11 = !{!"clang version 10.0.0"}50 !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)51 !13 = !DISubroutineType(types: !14)52 !14 = !{!6, !6}53 !15 = !{!16}54 !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)55 !17 = !DILocation(line: 10, scope: !12)56 57...58---59name: _Z8bb_to_bb60body: |61 bb.0.entry:62 successors: %bb.163 $ebx = MOV32ri 0, debug-location !1764 DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !1765 bb.1.bb1:66 successors: %bb.2, %bb.367 $eax = MOV32ri 0, debug-location !1768 DBG_VALUE $eax, $noreg, !16, !DIExpression(), debug-location !1769 JCC_1 %bb.3, 4, implicit killed $eflags70 bb.2.bb2:71 successors: %bb.472 $ebx = MOV32ri 0, debug-location !1773 JMP_1 %bb.474 bb.3.bb3:75 successors: %bb.476 $ebx = MOV32ri 0, debug-location !1777 bb.4.bb4:78 successors: %bb.1, %bb.579 $ebx = MOV32ri 0, debug-location !1780 JCC_1 %bb.1, 4, implicit killed $eflags81 bb.5.bb5:82 RET64 $eax, debug-location !1783...84