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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 loops with inner5 ; loops that clobber their locations.6 7 ; CHECK-LABEL: bb.0.entry:8 ; CHECK: DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !179 10 define i32 @_Z8bb_to_bb() local_unnamed_addr !dbg !12 {11 entry:12 br label %bb1, !dbg !1713 bb1:14 br label %bb2, !dbg !1715 bb2:16 br label %bb3, !dbg !1717 bb3:18 br label %bb3, !dbg !1719 bb4:20 br label %bb3, !dbg !1721 bb5:22 ret i32 0, !dbg !1723 }24 25 !llvm.dbg.cu = !{!0}26 !llvm.module.flags = !{!7, !8, !9, !10}27 !llvm.ident = !{!11}28 !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)29 !1 = !DIFile(filename: "main.cpp", directory: "F:\")30 !2 = !{}31 !3 = !{!4}32 !4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())33 !5 = distinct !DIGlobalVariable(name: "start", scope: !0, file: !1, line: 4, type: !6, isLocal: false, isDefinition: true)34 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)35 !7 = !{i32 2, !"Dwarf Version", i32 4}36 !8 = !{i32 2, !"Debug Info Version", i32 3}37 !9 = !{i32 1, !"wchar_size", i32 2}38 !10 = !{i32 7, !"PIC Level", i32 2}39 !11 = !{!"clang version 10.0.0"}40 !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)41 !13 = !DISubroutineType(types: !14)42 !14 = !{!6, !6}43 !15 = !{!16}44 !16 = !DILocalVariable(name: "myVar", scope: !12, file: !1, line: 7, type: !6)45 !17 = !DILocation(line: 10, scope: !12)46 47...48---49name: _Z8bb_to_bb50body: |51 bb.0.entry:52 successors: %bb.153 $ebx = MOV32ri 0, debug-location !1754 DBG_VALUE $ebx, $noreg, !16, !DIExpression(), debug-location !1755 bb.1.bb1:56 successors: %bb.2, %bb.457 $eax = MOV32ri 0, debug-location !1758 JCC_1 %bb.4, 4, implicit killed $eflags59 bb.2.bb2:60 successors: %bb.361 $eax = MOV32ri 0, debug-location !1762 bb.3.bb3:63 successors: %bb.2, %bb.464 $ebx = MOV32ri 0, debug-location !1765 JCC_1 %bb.2, 4, implicit killed $eflags66 bb.4.bb4:67 successors: %bb.1, %bb.568 $eax = MOV32ri 0, debug-location !1769 JCC_1 %bb.1, 4, implicit killed $eflags70 bb.5.bb5:71 RET64 $eax, debug-location !1772...73