# RUN: llc %s -verify-machineinstrs -o - -run-pass=livedebugvalues \
# RUN: -experimental-debug-variable-locations=true | FileCheck %s
#
# Test that we don't explode in a verifier error when we have a DBG_PHI of
# a physreg that is not live. Doesn't matter what variable locations are
# created.
#
# CHECK-NOT: Found {{.*}} machine code errors
# CHECK: DBG_PHI $fp0
# CHECK-NOT: Found {{.*}} machine code errors
--- |
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux"
@b = dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
@a = dso_local local_unnamed_addr global i32 0, align 4, !dbg !5
define dso_local i32 @c() local_unnamed_addr !dbg !13 {
entry:
ret i32 0, !dbg !36
}
declare void @llvm.dbg.declare(metadata, metadata, metadata)
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9, !10, !11}
!llvm.ident = !{!12}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 14.0.0 ([email protected]:llvm/llvm-project 1b09d0c42b42be219dd0984e0714d68b4a36cd3e)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
!3 = !DIFile(filename: "bbi-65026.c", directory: "/tmp")
!4 = !{!5, !0}
!5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression())
!6 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true)
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !{i32 7, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{i32 7, !"uwtable", i32 1}
!12 = !{!"clang version 14.0.0 ([email protected]:llvm/llvm-project 1b09d0c42b42be219dd0984e0714d68b4a36cd3e)"}
!13 = distinct !DISubprogram(name: "c", scope: !3, file: !3, line: 2, type: !14, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !16)
!14 = !DISubroutineType(types: !15)
!15 = !{!7}
!16 = !{!17}
!17 = !DILocalVariable(name: "d", scope: !13, file: !3, line: 3, type: !18)
!18 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float)
!19 = !DILocation(line: 3, column: 15, scope: !13)
!20 = !DILocation(line: 4, column: 7, scope: !21)
!21 = distinct !DILexicalBlock(scope: !13, file: !3, line: 4, column: 7)
!22 = !{!23, !23, i64 0}
!23 = !{!"int", !24, i64 0}
!24 = !{!"omnipotent char", !25, i64 0}
!25 = !{!"Simple C/C++ TBAA"}
!26 = !DILocation(line: 4, column: 9, scope: !21)
!27 = !DILocation(line: 0, scope: !21)
!28 = !DILocation(line: 4, column: 7, scope: !13)
!29 = !DILocation(line: 5, column: 9, scope: !21)
!30 = !DILocation(line: 0, scope: !13)
!31 = !DILocation(line: 5, column: 5, scope: !21)
!32 = !DILocation(line: 7, column: 11, scope: !21)
!33 = !DILocation(line: 7, column: 9, scope: !21)
!34 = !DILocation(line: 7, column: 15, scope: !21)
!35 = !DILocation(line: 8, column: 10, scope: !13)
!36 = !DILocation(line: 8, column: 3, scope: !13)
...
---
name: c
alignment: 16
tracksRegLiveness: true
tracksDebugUserValues: true
debugInstrRef: true
frameInfo:
maxAlignment: 4
machineFunctionInfo: {}
body: |
bb.0.entry:
DBG_PHI $fp0, 3
DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !30
$eax = MOV32ri 0
RET 0, debug-location !36
...
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