test/DebugInfo/X86/empty-metadata-dbg-declare.ll

; RUN: llc %s -stop-after=finalize-isel -o - | FileCheck %s --implicit-check-not=DBG

;; Check that a single "empty metadata" dbg.declare doesn't accidentally cause
;; other dbg.declares in the function to go missing.

; CHECK: ![[f:[0-9]+]] = !DILocalVariable(name: "f",

; CHECK: stack:
; CHECK-NEXT: - { id: 0, name: f, type: default, offset: 0, size: 4, alignment: 4,
; CHECK-NEXT:     stack-id: default, callee-saved-register: '', callee-saved-restored: true,
; CHECK-NEXT:     debug-info-variable: '![[f]]', debug-info-expression: '!DIExpression()',
; CHECK-NEXT:     debug-info-location: '{{.+}}' }
; CHECK-NEXT: entry_values:

target triple = "x86_64-unknown-linux-gnu"

define dso_local void @fun() local_unnamed_addr #0 !dbg !9 {
entry:
  %f = alloca float
  call void @llvm.dbg.declare(metadata ptr %f, metadata !13, metadata !DIExpression()), !dbg !15
  call void @llvm.dbg.declare(metadata !19, metadata !18, metadata !DIExpression()), !dbg !15
  ret void, !dbg !17
}

declare void @llvm.dbg.declare(metadata, metadata, metadata)

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
!llvm.ident = !{!8}

!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 16.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
!1 = !DIFile(filename: "test.cpp", directory: "/")
!2 = !{i32 7, !"Dwarf Version", i32 5}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = !{i32 1, !"wchar_size", i32 4}
!5 = !{i32 8, !"PIC Level", i32 2}
!6 = !{i32 7, !"PIE Level", i32 2}
!7 = !{i32 7, !"uwtable", i32 2}
!8 = !{!"clang version 16.0.0"}
!9 = distinct !DISubprogram(name: "fun", linkageName: "fun", scope: !1, file: !1, line: 2, type: !10, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
!10 = !DISubroutineType(types: !11)
!11 = !{null}
!12 = !{!13}
!13 = !DILocalVariable(name: "f", scope: !9, file: !1, line: 3, type: !14)
!14 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!15 = !DILocation(line: 0, scope: !9)
!16 = !DILocation(line: 4, column: 3, scope: !9)
!17 = !DILocation(line: 5, column: 1, scope: !9)
!18 = !DILocalVariable(name: "g", scope: !9, file: !1, line: 3, type: !14)
!19 = !{}