1# RUN: llc %s -verify-machineinstrs -o - -run-pass=livedebugvalues \ 2# RUN: -experimental-debug-variable-locations=true | FileCheck %s 3# 4# Test that we don't explode in a verifier error when we have a DBG_PHI of 5# a physreg that is not live. Doesn't matter what variable locations are 6# created. 7# 8# CHECK-NOT: Found {{.*}} machine code errors 9# CHECK: DBG_PHI $fp0 10# CHECK-NOT: Found {{.*}} machine code errors 11 12--- | 13 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 14 target triple = "x86_64-unknown-linux" 15 16 @b = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0 17 @a = dso_local local_unnamed_addr global i32 0, align 4, !dbg !5 18 19 define dso_local i32 @c() local_unnamed_addr !dbg !13 { 20 entry: 21 ret i32 0, !dbg !36 22 } 23 24 declare void @llvm.dbg.declare(metadata, metadata, metadata) 25 26 declare void @llvm.dbg.value(metadata, metadata, metadata) 27 28 !llvm.dbg.cu = !{!2} 29 !llvm.module.flags = !{!8, !9, !10, !11} 30 !llvm.ident = !{!12} 31 32 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 33 !1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true) 34 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 14.0.0 (git@github.com:llvm/llvm-project 1b09d0c42b42be219dd0984e0714d68b4a36cd3e)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None) 35 !3 = !DIFile(filename: "bbi-65026.c", directory: "/tmp") 36 !4 = !{!5, !0} 37 !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression()) 38 !6 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true) 39 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 40 !8 = !{i32 7, !"Dwarf Version", i32 4} 41 !9 = !{i32 2, !"Debug Info Version", i32 3} 42 !10 = !{i32 1, !"wchar_size", i32 4} 43 !11 = !{i32 7, !"uwtable", i32 1} 44 !12 = !{!"clang version 14.0.0 (git@github.com:llvm/llvm-project 1b09d0c42b42be219dd0984e0714d68b4a36cd3e)"} 45 !13 = distinct !DISubprogram(name: "c", scope: !3, file: !3, line: 2, type: !14, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !16) 46 !14 = !DISubroutineType(types: !15) 47 !15 = !{!7} 48 !16 = !{!17} 49 !17 = !DILocalVariable(name: "d", scope: !13, file: !3, line: 3, type: !18) 50 !18 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float) 51 !19 = !DILocation(line: 3, column: 15, scope: !13) 52 !20 = !DILocation(line: 4, column: 7, scope: !21) 53 !21 = distinct !DILexicalBlock(scope: !13, file: !3, line: 4, column: 7) 54 !22 = !{!23, !23, i64 0} 55 !23 = !{!"int", !24, i64 0} 56 !24 = !{!"omnipotent char", !25, i64 0} 57 !25 = !{!"Simple C/C++ TBAA"} 58 !26 = !DILocation(line: 4, column: 9, scope: !21) 59 !27 = !DILocation(line: 0, scope: !21) 60 !28 = !DILocation(line: 4, column: 7, scope: !13) 61 !29 = !DILocation(line: 5, column: 9, scope: !21) 62 !30 = !DILocation(line: 0, scope: !13) 63 !31 = !DILocation(line: 5, column: 5, scope: !21) 64 !32 = !DILocation(line: 7, column: 11, scope: !21) 65 !33 = !DILocation(line: 7, column: 9, scope: !21) 66 !34 = !DILocation(line: 7, column: 15, scope: !21) 67 !35 = !DILocation(line: 8, column: 10, scope: !13) 68 !36 = !DILocation(line: 8, column: 3, scope: !13) 69 70... 71--- 72name: c 73alignment: 16 74tracksRegLiveness: true 75tracksDebugUserValues: true 76debugInstrRef: true 77frameInfo: 78 maxAlignment: 4 79machineFunctionInfo: {} 80body: | 81 bb.0.entry: 82 83 DBG_PHI $fp0, 3 84 DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !30 85 $eax = MOV32ri 0 86 RET 0, debug-location !36 87 88... 89