; LLVM IR from JessonYue/LeetCodeLearning :: BaseDataStructure/tree/binarylinkedlist.ll (Z6insertPP11binary_treei)

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insertPP11binary_treei(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = 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) #3
  store ptr null, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %21, label %10

10:                                               ; preds = %2
  %11 = call noalias ptr @malloc(i64 noundef 24) #4
  store ptr %11, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.binary_tree, ptr %12, i32 0, i32 2
  store ptr null, ptr %13, align 8, !tbaa !11
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.binary_tree, ptr %14, i32 0, i32 1
  store ptr null, ptr %15, align 8, !tbaa !13
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.binary_tree, ptr %17, i32 0, i32 0
  store i32 %16, ptr %18, align 8, !tbaa !14
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %19, ptr %20, align 8, !tbaa !5
  store i32 1, ptr %6, align 4
  br label %47

21:                                               ; preds = %2
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load ptr, ptr %23, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.binary_tree, ptr %24, i32 0, i32 0
  %26 = load i32, ptr %25, align 8, !tbaa !14
  %27 = icmp slt i32 %22, %26
  br i1 %27, label %28, label %33

28:                                               ; preds = %21
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = load ptr, ptr %29, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.binary_tree, ptr %30, i32 0, i32 1
  %32 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6insertPP11binary_treei(ptr noundef %31, i32 noundef %32)
  br label %46

33:                                               ; preds = %21
  %34 = load i32, ptr %4, align 4, !tbaa !9
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = load ptr, ptr %35, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.binary_tree, ptr %36, i32 0, i32 0
  %38 = load i32, ptr %37, align 8, !tbaa !14
  %39 = icmp sgt i32 %34, %38
  br i1 %39, label %40, label %45

40:                                               ; preds = %33
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = load ptr, ptr %41, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.binary_tree, ptr %42, i32 0, i32 2
  %44 = load i32, ptr %4, align 4, !tbaa !9
  call void @_Z6insertPP11binary_treei(ptr noundef %43, i32 noundef %44)
  br label %45

45:                                               ; preds = %40, %33
  br label %46

46:                                               ; preds = %45, %28
  store i32 0, ptr %6, align 4
  br label %47

47:                                               ; preds = %46, %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  %48 = load i32, ptr %6, align 4
  switch i32 %48, label %50 [
    i32 0, label %49
    i32 1, label %49
  ]

49:                                               ; preds = %47, %47
  ret void

50:                                               ; preds = %47
  unreachable
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; 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 = { nounwind 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 = { nounwind }
attributes #4 = { nounwind 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 16}
!12 = !{!"_ZTS11binary_tree", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !10, i64 0}


; 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 nofree nounwind uwtable
define dso_local void @_Z6insertPP11binary_treei(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %.not18 = icmp eq ptr %3, null
  br i1 %.not18, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge.loopexit:                  ; preds = %tailrecurse.backedge
  %4 = getelementptr inbounds i8, ptr %7, 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 dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #3
  %6 = getelementptr inbounds i8, ptr %5, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %6, i8 0, i64 16, i1 false)
  store i32 %1, ptr %5, align 8, !tbaa !9
  store ptr %5, ptr %.tr.lcssa, align 8, !tbaa !5
  br label %.loopexit

.lr.ph:                                           ; preds = %2, %tailrecurse.backedge
  %7 = phi ptr [ %11, %tailrecurse.backedge ], [ %3, %2 ]
  %8 = load i32, ptr %7, align 8, !tbaa !9
  %9 = icmp sgt i32 %8, %1
  br i1 %9, label %tailrecurse.backedge, label %12

tailrecurse.backedge:                             ; preds = %.lr.ph, %12
  %.sink = phi i64 [ 16, %12 ], [ 8, %.lr.ph ]
  %10 = getelementptr inbounds i8, ptr %7, i64 %.sink
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %tailrecurse._crit_edge.loopexit, label %.lr.ph

12:                                               ; preds = %.lr.ph
  %13 = icmp slt i32 %8, %1
  br i1 %13, label %tailrecurse.backedge, label %.loopexit

.loopexit:                                        ; preds = %12, %tailrecurse._crit_edge
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { mustprogress nofree 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 #1 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nounwind 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 = !{!"_ZTS11binary_tree", !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,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass