; LLVM IR from vczh/herodb :: Kernel/Source/Vlpp.ll (ZN2vl18ThreadLocalStorage15DisposeStoragesEv)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"struct.vl::TlsStorageLink" = type { ptr, ptr }

@_ZN2vl7tlsHeadE = external dso_local global ptr, align 8
@_ZN2vl7tlsTailE = external dso_local global ptr, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl18ThreadLocalStorage7DisposeEv(ptr noundef nonnull align 8 dereferenceable(25)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl18ThreadLocalStorage11FixStoragesEv() #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl18ThreadLocalStorage15DisposeStoragesEv() #2 align 2 {
  %1 = alloca ptr, align 8
  %2 = alloca ptr, align 8
  call void @_ZN2vl18ThreadLocalStorage11FixStoragesEv()
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #4
  %3 = load ptr, ptr @_ZN2vl7tlsHeadE, align 8, !tbaa !5
  store ptr %3, ptr %1, align 8, !tbaa !5
  store ptr null, ptr @_ZN2vl7tlsHeadE, align 8, !tbaa !5
  store ptr null, ptr @_ZN2vl7tlsTailE, align 8, !tbaa !5
  br label %4

4:                                                ; preds = %18, %0
  %5 = load ptr, ptr %1, align 8, !tbaa !5
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %19

7:                                                ; preds = %4
  %8 = load ptr, ptr %1, align 8, !tbaa !5
  %9 = getelementptr inbounds %"struct.vl::TlsStorageLink", ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  call void @_ZN2vl18ThreadLocalStorage7DisposeEv(ptr noundef nonnull align 8 dereferenceable(25) %10)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  %11 = load ptr, ptr %1, align 8, !tbaa !5
  store ptr %11, ptr %2, align 8, !tbaa !5
  %12 = load ptr, ptr %1, align 8, !tbaa !5
  %13 = getelementptr inbounds %"struct.vl::TlsStorageLink", ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  store ptr %14, ptr %1, align 8, !tbaa !5
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = icmp eq ptr %15, null
  br i1 %16, label %18, label %17

17:                                               ; preds = %7
  call void @_ZdlPvm(ptr noundef %15, i64 noundef 16) #5
  br label %18

18:                                               ; preds = %17, %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  br label %4, !llvm.loop !12

19:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #4
  ret void
}

attributes #0 = { nobuiltin nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }
attributes #5 = { builtin nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTSN2vl14TlsStorageLinkE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@_ZN2vl7tlsHeadE = external dso_local local_unnamed_addr global ptr, align 8
@_ZN2vl7tlsTailE = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2vl18ThreadLocalStorage7DisposeEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN2vl18ThreadLocalStorage11FixStoragesEv() local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2vl18ThreadLocalStorage15DisposeStoragesEv() local_unnamed_addr #1 align 2 {
  tail call void @_ZN2vl18ThreadLocalStorage11FixStoragesEv()
  %1 = load ptr, ptr @_ZN2vl7tlsHeadE, align 8, !tbaa !5
  store ptr null, ptr @_ZN2vl7tlsHeadE, align 8, !tbaa !5
  store ptr null, ptr @_ZN2vl7tlsTailE, align 8, !tbaa !5
  %.not5 = icmp eq ptr %1, null
  br i1 %.not5, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.06 = phi ptr [ %4, %.lr.ph ], [ %1, %0 ]
  %2 = load ptr, ptr %.06, align 8, !tbaa !9
  tail call void @_ZN2vl18ThreadLocalStorage7DisposeEv(ptr noundef nonnull align 8 dereferenceable(25) %2)
  %3 = getelementptr inbounds i8, ptr %.06, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !11
  tail call void @_ZdlPvm(ptr noundef nonnull %.06, i64 noundef 16) #3
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %0
  ret void
}

attributes #0 = { nobuiltin nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { builtin nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTSN2vl14TlsStorageLinkE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass