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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 basic blocks with no5 ; control flow when it's location is clobbered.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 $ebx, $noreg, !16, !DIExpression()11 12 define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {13 entry:14 br label %bb1, !dbg !1715 bb1:16 br label %bb2, !dbg !1717 bb2:18 br label %bb3, !dbg !1719 bb3:20 ret i32 0, !dbg !1721 }22 23 !llvm.dbg.cu = !{!0}24 !llvm.module.flags = !{!7, !8, !9, !10}25 !llvm.ident = !{!11}26 !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)27 !1 = !DIFile(filename: "main.cpp", directory: "F:\")28 !2 = !{}29 !3 = !{!4}30 !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())31 !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)32 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)33 !7 = !{i32 2, !"Dwarf Version", i32 4}34 !8 = !{i32 2, !"Debug Info Version", i32 3}35 !9 = !{i32 1, !"wchar_size", i32 2}36 !10 = !{i32 7, !"PIC Level", i32 2}37 !11 = !{!"clang version 10.0.0"}38 !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)39 !13 = !DISubroutineType(types: !14)40 !14 = !{!6, !6}41 !15 = !{!16}42 !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)43 !17 = !DILocation(line: 10, scope: !12)44 45...46---47name: _Z8bb_to_bb48body: |49 bb.0.entry:50 successors: %bb.151 $ebx = MOV32ri 0, debug-location !1752 DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !1753 bb.1.bb1:54 successors: %bb.255 $ebx = MOV32ri 0, debug-location !1756 bb.2.bb2:57 successors: %bb.358 $eax = MOV32ri 0, debug-location !1759 bb.3.bb3:60 RET64 $eax, debug-location !1761...62