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1# RUN: llc -run-pass=livedebugvars -run-pass=virtregrewriter -o - %s | FileCheck %s2 3# Regression test for a bug where LiveDebugVariables used the wrong instruction4# iterator type when debugInstrRef=true, and triggered an assertion.5 6--- |7 target triple = "x86_64-unknown-linux-gnu"8 9 define i32 @foo(i32 %a, i32 %b) !dbg !4 {10 entry:11 ret i32 0, !dbg !1012 }13 14 !llvm.dbg.cu = !{!0}15 !llvm.module.flags = !{!3}16 17 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)18 !1 = !DIFile(filename: "-", directory: "./")19 !2 = !{}20 !3 = !{i32 2, !"Debug Info Version", i32 3}21 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !2)22 !5 = !DISubroutineType(types: !6)23 !6 = !{!7, !7, !7}24 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)25 !8 = !DILocalVariable(name: "local_var", scope: !4, file: !1, line: 7, type: !7)26 !9 = !DILocation(line: 7, column: 1, scope: !4)27 !10 = !DILocation(line: 8, column: 3, scope: !4)28 29...30---31name: foo32tracksRegLiveness: true33debugInstrRef: true34body: |35 bb.0:36 $esi = MOV32ri 2, debug-instr-number 137 BUNDLE {38 NOOP39 }40 DBG_INSTR_REF !8, !DIExpression(), dbg-instr-ref(1, 0), debug-location !941 RET 0, undef $eax, debug-location !1042...43 44# CHECK-LABEL: name: foo45# CHECK: bb.0:46# CHECK: BUNDLE {47# CHECK: }48# CHECK: DBG_INSTR_REF49