; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 15. Binary Search Tree/isDeadEnd.ll (Z6insertPP4Nodei)

; 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.Node = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insertPP4Nodei(ptr noundef %0, i32 noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  store ptr null, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %22, label %12

12:                                               ; preds = %2
  %13 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #6
  %14 = load i32, ptr %4, align 4, !tbaa !9
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(24) %13, i32 noundef %14)
          to label %15 unwind label %18

15:                                               ; preds = %12
  store ptr %13, ptr %5, align 8, !tbaa !5
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %16, ptr %17, align 8, !tbaa !5
  store i32 1, ptr %8, align 4
  br label %48

18:                                               ; preds = %12
  %19 = landingpad { ptr, i32 }
          cleanup
  %20 = extractvalue { ptr, i32 } %19, 0
  store ptr %20, ptr %6, align 8
  %21 = extractvalue { ptr, i32 } %19, 1
  store i32 %21, ptr %7, align 4
  call void @_ZdlPvm(ptr noundef %13, i64 noundef 24) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  br label %51

22:                                               ; preds = %2
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.Node, ptr %25, i32 0, i32 0
  %27 = load i32, ptr %26, align 8, !tbaa !11
  %28 = icmp slt i32 %23, %27
  br i1 %28, label %29, label %34

29:                                               ; preds = %22
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Node, ptr %31, i32 0, i32 1
  %33 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6insertPP4Nodei(ptr noundef %32, i32 noundef %33)
  br label %47

34:                                               ; preds = %22
  %35 = load i32, ptr %4, align 4, !tbaa !9
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = load ptr, ptr %36, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.Node, ptr %37, i32 0, i32 0
  %39 = load i32, ptr %38, align 8, !tbaa !11
  %40 = icmp sgt i32 %35, %39
  br i1 %40, label %41, label %46

41:                                               ; preds = %34
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load ptr, ptr %42, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Node, ptr %43, i32 0, i32 2
  %45 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6insertPP4Nodei(ptr noundef %44, i32 noundef %45)
  br label %46

46:                                               ; preds = %41, %34
  br label %47

47:                                               ; preds = %46, %29
  store i32 0, ptr %8, align 4
  br label %48

48:                                               ; preds = %47, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  %49 = load i32, ptr %8, align 4
  switch i32 %49, label %56 [
    i32 0, label %50
    i32 1, label %50
  ]

50:                                               ; preds = %48, %48
  ret void

51:                                               ; preds = %18
  %52 = load ptr, ptr %6, align 8
  %53 = load i32, ptr %7, align 4
  %54 = insertvalue { ptr, i32 } poison, ptr %52, 0
  %55 = insertvalue { ptr, i32 } %54, i32 %53, 1
  resume { ptr, i32 } %55

56:                                               ; preds = %48
  unreachable
}

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

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #4

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nobuiltin allocsize(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 = { 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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }
attributes #7 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4Node", !10, i64 0, !6, i64 8, !6, i64 16}


; 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"

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insertPP4Nodei(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %.not15 = icmp eq ptr %3, null
  br i1 %.not15, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge.loopexit:                  ; preds = %tailrecurse.backedge
  %4 = getelementptr inbounds i8, ptr %6, i64 %.sink
  br label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse._crit_edge.loopexit, %2
  %.tr.lcssa = phi ptr [ %0, %2 ], [ %4, %tailrecurse._crit_edge.loopexit ]
  %5 = tail call noalias noundef nonnull dereferenceable(24) ptr @_Znwm(i64 noundef 24) #3
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(24) %5, i32 noundef %1)
  store ptr %5, ptr %.tr.lcssa, align 8, !tbaa !5
  br label %.loopexit

.lr.ph:                                           ; preds = %2, %tailrecurse.backedge
  %6 = phi ptr [ %10, %tailrecurse.backedge ], [ %3, %2 ]
  %7 = load i32, ptr %6, align 8, !tbaa !9
  %8 = icmp sgt i32 %7, %1
  br i1 %8, label %tailrecurse.backedge, label %11

tailrecurse.backedge:                             ; preds = %.lr.ph, %11
  %.sink = phi i64 [ 16, %11 ], [ 8, %.lr.ph ]
  %9 = getelementptr inbounds i8, ptr %6, i64 %.sink
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %.not = icmp eq ptr %10, null
  br i1 %.not, label %tailrecurse._crit_edge.loopexit, label %.lr.ph

11:                                               ; preds = %.lr.ph
  %12 = icmp slt i32 %7, %1
  br i1 %12, label %tailrecurse.backedge, label %.loopexit

.loopexit:                                        ; preds = %11, %tailrecurse._crit_edge
  ret void
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

attributes #0 = { 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 #1 = { nobuiltin allocsize(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 allocsize(0) }

!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, !11, i64 0}
!10 = !{!"_ZTS4Node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass