; LLVM IR from begeekmyfriend/leetcode :: 0117_populating_next_right_pointers_in_each_node_ii (connect)

; 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, ptr }

; Function Attrs: nounwind uwtable
declare dso_local ptr @connect(ptr 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: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %struct.Node, align 8
  %7 = alloca [2 x %struct.Node], align 16
  %8 = alloca [4 x %struct.Node], align 16
  %9 = alloca [8 x %struct.Node], align 16
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 64, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 128, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 256, ptr %9) #2
  %10 = getelementptr inbounds %struct.Node, ptr %6, i32 0, i32 0
  store i32 1, ptr %10, align 8, !tbaa !11
  %11 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 0
  %12 = getelementptr inbounds %struct.Node, ptr %11, i32 0, i32 0
  store i32 2, ptr %12, align 16, !tbaa !11
  %13 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 1
  %14 = getelementptr inbounds %struct.Node, ptr %13, i32 0, i32 0
  store i32 3, ptr %14, align 16, !tbaa !11
  %15 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 0
  %16 = getelementptr inbounds %struct.Node, ptr %15, i32 0, i32 0
  store i32 4, ptr %16, align 16, !tbaa !11
  %17 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 1
  %18 = getelementptr inbounds %struct.Node, ptr %17, i32 0, i32 0
  store i32 5, ptr %18, align 16, !tbaa !11
  %19 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 3
  %20 = getelementptr inbounds %struct.Node, ptr %19, i32 0, i32 0
  store i32 7, ptr %20, align 16, !tbaa !11
  %21 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 0
  %22 = getelementptr inbounds %struct.Node, ptr %6, i32 0, i32 1
  store ptr %21, ptr %22, align 8, !tbaa !13
  %23 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 1
  %24 = getelementptr inbounds %struct.Node, ptr %6, i32 0, i32 2
  store ptr %23, ptr %24, align 8, !tbaa !14
  %25 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 0
  %26 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 0
  %27 = getelementptr inbounds %struct.Node, ptr %26, i32 0, i32 1
  store ptr %25, ptr %27, align 8, !tbaa !13
  %28 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 1
  %29 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 0
  %30 = getelementptr inbounds %struct.Node, ptr %29, i32 0, i32 2
  store ptr %28, ptr %30, align 16, !tbaa !14
  %31 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 0
  %32 = getelementptr inbounds %struct.Node, ptr %31, i32 0, i32 3
  store ptr null, ptr %32, align 8, !tbaa !15
  %33 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 1
  %34 = getelementptr inbounds %struct.Node, ptr %33, i32 0, i32 1
  store ptr null, ptr %34, align 8, !tbaa !13
  %35 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 3
  %36 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 1
  %37 = getelementptr inbounds %struct.Node, ptr %36, i32 0, i32 2
  store ptr %35, ptr %37, align 16, !tbaa !14
  %38 = getelementptr inbounds [2 x %struct.Node], ptr %7, i64 0, i64 1
  %39 = getelementptr inbounds %struct.Node, ptr %38, i32 0, i32 3
  store ptr null, ptr %39, align 8, !tbaa !15
  %40 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 0
  %41 = getelementptr inbounds %struct.Node, ptr %40, i32 0, i32 1
  store ptr null, ptr %41, align 8, !tbaa !13
  %42 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 0
  %43 = getelementptr inbounds %struct.Node, ptr %42, i32 0, i32 2
  store ptr null, ptr %43, align 16, !tbaa !14
  %44 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 0
  %45 = getelementptr inbounds %struct.Node, ptr %44, i32 0, i32 3
  store ptr null, ptr %45, align 8, !tbaa !15
  %46 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 1
  %47 = getelementptr inbounds %struct.Node, ptr %46, i32 0, i32 1
  store ptr null, ptr %47, align 8, !tbaa !13
  %48 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 1
  %49 = getelementptr inbounds %struct.Node, ptr %48, i32 0, i32 2
  store ptr null, ptr %49, align 16, !tbaa !14
  %50 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 1
  %51 = getelementptr inbounds %struct.Node, ptr %50, i32 0, i32 3
  store ptr null, ptr %51, align 8, !tbaa !15
  %52 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 3
  %53 = getelementptr inbounds %struct.Node, ptr %52, i32 0, i32 1
  store ptr null, ptr %53, align 8, !tbaa !13
  %54 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 3
  %55 = getelementptr inbounds %struct.Node, ptr %54, i32 0, i32 2
  store ptr null, ptr %55, align 16, !tbaa !14
  %56 = getelementptr inbounds [4 x %struct.Node], ptr %8, i64 0, i64 3
  %57 = getelementptr inbounds %struct.Node, ptr %56, i32 0, i32 3
  store ptr null, ptr %57, align 8, !tbaa !15
  %58 = call ptr @connect(ptr noundef %6)
  call void @llvm.lifetime.end.p0(i64 256, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 128, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 64, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #2
  ret i32 0
}

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"Node", !6, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !10, i64 16}
!15 = !{!12, !10, i64 24}


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

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

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = alloca %struct.Node, align 8
  %4 = alloca [2 x %struct.Node], align 16
  %5 = alloca [4 x %struct.Node], align 16
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %5) #3
  store i32 1, ptr %3, align 8, !tbaa !5
  store i32 2, ptr %4, align 16, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %4, i64 32
  store i32 3, ptr %6, align 16, !tbaa !5
  store i32 4, ptr %5, align 16, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %5, i64 32
  store i32 5, ptr %7, align 16, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %5, i64 96
  store i32 7, ptr %8, align 16, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %4, ptr %9, align 8, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %3, i64 16
  store ptr %6, ptr %10, align 8, !tbaa !12
  %11 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %5, ptr %11, align 8, !tbaa !11
  %12 = getelementptr inbounds i8, ptr %4, i64 16
  store ptr %7, ptr %12, align 16, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %4, i64 24
  store ptr null, ptr %13, align 8, !tbaa !13
  %14 = getelementptr inbounds i8, ptr %4, i64 40
  store ptr null, ptr %14, align 8, !tbaa !11
  %15 = getelementptr inbounds i8, ptr %4, i64 48
  store ptr %8, ptr %15, align 16, !tbaa !12
  %16 = getelementptr inbounds i8, ptr %4, i64 56
  store ptr null, ptr %16, align 8, !tbaa !13
  %17 = getelementptr inbounds i8, ptr %5, i64 8
  %18 = getelementptr inbounds i8, ptr %5, i64 40
  %19 = getelementptr inbounds i8, ptr %5, i64 104
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %17, i8 0, i64 24, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %18, i8 0, i64 24, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %19, i8 0, i64 24, i1 false)
  %20 = call ptr @connect(ptr noundef nonnull %3)
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #3
  ret i32 0
}

; 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 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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 = !{!"Node", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!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 = !{!6, !10, i64 24}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass