; LLVM IR from begeekmyfriend/leetcode :: 0199_binary_tree_right_side_view (bst_right)

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

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca %struct.TreeNode, align 8
  %3 = alloca [2 x %struct.TreeNode], align 16
  %4 = alloca [4 x %struct.TreeNode], align 16
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #3
  %8 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 0
  store i32 3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 48, ptr %3) #3
  %9 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %10 = getelementptr inbounds %struct.TreeNode, ptr %9, i32 0, i32 0
  store i32 9, ptr %10, align 16, !tbaa !5
  %11 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %12 = getelementptr inbounds %struct.TreeNode, ptr %11, i32 0, i32 0
  store i32 20, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 96, ptr %4) #3
  %13 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %14 = getelementptr inbounds %struct.TreeNode, ptr %13, i32 0, i32 0
  store i32 15, ptr %14, align 16, !tbaa !5
  %15 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %16 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 1
  store ptr %15, ptr %16, align 8, !tbaa !11
  %17 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %18 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 2
  store ptr %17, ptr %18, align 8, !tbaa !12
  %19 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %20 = getelementptr inbounds %struct.TreeNode, ptr %19, i32 0, i32 1
  store ptr null, ptr %20, align 8, !tbaa !11
  %21 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %22 = getelementptr inbounds %struct.TreeNode, ptr %21, i32 0, i32 2
  store ptr null, ptr %22, align 16, !tbaa !12
  %23 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %24 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %25 = getelementptr inbounds %struct.TreeNode, ptr %24, i32 0, i32 1
  store ptr %23, ptr %25, align 8, !tbaa !11
  %26 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %27 = getelementptr inbounds %struct.TreeNode, ptr %26, i32 0, i32 2
  store ptr null, ptr %27, align 8, !tbaa !12
  %28 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 0
  %29 = getelementptr inbounds %struct.TreeNode, ptr %28, i32 0, i32 1
  store ptr null, ptr %29, align 8, !tbaa !11
  %30 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 0
  %31 = getelementptr inbounds %struct.TreeNode, ptr %30, i32 0, i32 2
  store ptr null, ptr %31, align 16, !tbaa !12
  %32 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 1
  %33 = getelementptr inbounds %struct.TreeNode, ptr %32, i32 0, i32 1
  store ptr null, ptr %33, align 8, !tbaa !11
  %34 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 1
  %35 = getelementptr inbounds %struct.TreeNode, ptr %34, i32 0, i32 2
  store ptr null, ptr %35, align 8, !tbaa !12
  %36 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %37 = getelementptr inbounds %struct.TreeNode, ptr %36, i32 0, i32 1
  store ptr null, ptr %37, align 8, !tbaa !11
  %38 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %39 = getelementptr inbounds %struct.TreeNode, ptr %38, i32 0, i32 2
  store ptr null, ptr %39, align 16, !tbaa !12
  %40 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %41 = getelementptr inbounds %struct.TreeNode, ptr %40, i32 0, i32 1
  store ptr null, ptr %41, align 8, !tbaa !11
  %42 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %43 = getelementptr inbounds %struct.TreeNode, ptr %42, i32 0, i32 2
  store ptr null, ptr %43, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %44 = call ptr @rightSideView(ptr noundef %2, ptr noundef %6)
  store ptr %44, ptr %7, align 8, !tbaa !14
  store i32 0, ptr %5, align 4, !tbaa !13
  br label %45

45:                                               ; preds = %56, %0
  %46 = load i32, ptr %5, align 4, !tbaa !13
  %47 = load i32, ptr %6, align 4, !tbaa !13
  %48 = icmp slt i32 %46, %47
  br i1 %48, label %49, label %59

49:                                               ; preds = %45
  %50 = load ptr, ptr %7, align 8, !tbaa !14
  %51 = load i32, ptr %5, align 4, !tbaa !13
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds i32, ptr %50, i64 %52
  %54 = load i32, ptr %53, align 4, !tbaa !13
  %55 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %54)
  br label %56

56:                                               ; preds = %49
  %57 = load i32, ptr %5, align 4, !tbaa !13
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %5, align 4, !tbaa !13
  br label %45, !llvm.loop !15

59:                                               ; preds = %45
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 96, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 48, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #3
  ret i32 0
}

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

; Function Attrs: nounwind uwtable
declare hidden ptr @rightSideView(ptr noundef, ptr noundef) #0

declare i32 @printf(ptr 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 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 }

!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, !7, i64 0}
!6 = !{!"TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!7, !7, i64 0}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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"

%struct.TreeNode = type { i32, ptr, ptr }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca %struct.TreeNode, align 8
  %2 = alloca [2 x %struct.TreeNode], align 16
  %3 = alloca [4 x %struct.TreeNode], align 16
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #4
  store i32 3, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %2) #4
  store i32 9, ptr %2, align 16, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %2, i64 24
  store i32 20, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 96, ptr nonnull %3) #4
  %6 = getelementptr inbounds i8, ptr %3, i64 48
  store i32 15, ptr %6, align 16, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  store ptr %2, ptr %7, align 8, !tbaa !11
  %8 = getelementptr inbounds i8, ptr %1, i64 16
  store ptr %5, ptr %8, align 8, !tbaa !12
  %9 = getelementptr inbounds i8, ptr %2, i64 8
  %10 = getelementptr inbounds i8, ptr %2, i64 32
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %9, i8 0, i64 16, i1 false)
  store ptr %6, ptr %10, align 16, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %2, i64 40
  store ptr null, ptr %11, align 8, !tbaa !12
  %12 = getelementptr inbounds i8, ptr %3, i64 8
  %13 = getelementptr inbounds i8, ptr %3, i64 32
  %14 = getelementptr inbounds i8, ptr %3, i64 56
  %15 = getelementptr inbounds i8, ptr %3, i64 80
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %12, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %13, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %14, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %15, i8 0, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  store i32 0, ptr %4, align 4, !tbaa !13
  %16 = call ptr @rightSideView(ptr noundef nonnull %1, ptr noundef nonnull %4)
  %17 = load i32, ptr %4, align 4, !tbaa !13
  %18 = icmp sgt i32 %17, 0
  br i1 %18, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %19 = getelementptr inbounds i32, ptr %16, i64 %indvars.iv
  %20 = load i32, ptr %19, align 4, !tbaa !13
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %20)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %22 = load i32, ptr %4, align 4, !tbaa !13
  %23 = sext i32 %22 to i64
  %24 = icmp slt i64 %indvars.iv.next, %23
  br i1 %24, label %.lr.ph, label %._crit_edge, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %0
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 96, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #4
  ret i32 0
}

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

; Function Attrs: nounwind uwtable
declare hidden ptr @rightSideView(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { 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, !7, i64 0}
!6 = !{!"TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass