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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 not propagated into a loop with5 ; diamond pattern that clobbers it's location.6 7 ; CHECK-LABEL: bb.0.entry:8 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !179 ; CHECK-LABEL: bb.1.bb1:10 11 define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {12 entry:13 br label %bb1, !dbg !1714 bb1:15 br label %bb2, !dbg !1716 bb2:17 br label %bb3, !dbg !1718 bb3:19 br label %bb3, !dbg !1720 bb4:21 br label %bb3, !dbg !1722 bb5:23 ret i32 0, !dbg !1724 }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_bb51body: |52 bb.0.entry:53 successors: %bb.154 $ebx = MOV32ri 0, debug-location !1755 DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !1756 bb.1.bb1:57 successors: %bb.2, %bb.358 $eax = MOV32ri 0, debug-location !1759 JCC_1 %bb.3, 4, implicit killed $eflags60 bb.2.bb2:61 successors: %bb.462 $eax = MOV32ri 0, debug-location !1763 JMP_1 %bb.464 bb.3.bb3:65 successors: %bb.466 $ebx = MOV32ri 0, debug-location !1767 bb.4.bb4:68 successors: %bb.1, %bb.569 $eax = MOV32ri 0, debug-location !1770 JCC_1 %bb.1, 4, implicit killed $eflags71 bb.5.bb5:72 RET64 $eax, debug-location !1773...74