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1# After adding new debug instruction for labels, it is possible to have2# debug instructions before DBG_VALUE. When querying DBG_VALUE's slot3# index using previous instruction and the previous instruction is debug4# instruction, it will trigger an assertion as using debug instruction5# to get slot index. This test is to emulate the case when DBG_VALUE's6# previous instruction is DBG_LABEL in LiveDebugVariables pass.7#8# RUN: llc -run-pass=livedebugvars -run-pass=virtregrewriter -o - %s | FileCheck %s9 10--- |11 target triple = "x86_64-unknown-linux-gnu"12 13 define i32 @foo(i32 %a, i32 %b) !dbg !4 {14 entry:15 ret i32 0, !dbg !1216 }17 18 !llvm.dbg.cu = !{!0}19 !llvm.module.flags = !{!3}20 21 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)22 !1 = !DIFile(filename: "debug-var-slot.c", directory: "./")23 !2 = !{}24 !3 = !{i32 2, !"Debug Info Version", i32 3}25 !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)26 !5 = !DISubroutineType(types: !6)27 !6 = !{!7, !7, !7}28 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)29 !8 = !DILabel(scope: !4, name: "top", file: !1, line: 4)30 !9 = !DILocation(line: 4, column: 1, scope: !4)31 !10 = !DILocalVariable(name: "local_var", scope: !4, file: !1, line: 7, type: !7)32 !11 = !DILocation(line: 7, column: 1, scope: !4)33 !12 = !DILocation(line: 8, column: 3, scope: !4)34 !13 = !DILocalVariable(name: "local_var2", scope: !4, file: !1, line: 7, type: !7)35 36...37---38name: foo39tracksRegLiveness: true40body: |41 bb.0:42 43 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !1144 DBG_LABEL !8, debug-location !945 DBG_VALUE $edi, $noreg, !10, !DIExpression(), debug-location !1146 RET 0, undef $eax, debug-location !1247...48 49# CHECK-LABEL: name: foo50# CHECK: bb.0:51# CHECK-DAG: DBG_LABEL52# CHECK-DAG: DBG_VALUE $esi53# CHECK-DAG: DBG_VALUE $edi54