; LLVM IR from edualgo/dsa-code-store :: Binary-Tree/Binary-Tree-master/Source/main.ll (Z16mirrorBinaryTreeP14BinaryTreeNodeIiE)

; 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"

%class.BinaryTreeNode = type { i32, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  br label %37

7:                                                ; preds = %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %class.BinaryTreeNode, ptr %8, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %16

12:                                               ; preds = %7
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %class.BinaryTreeNode, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  call void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef %15)
  br label %16

16:                                               ; preds = %12, %7
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds %class.BinaryTreeNode, ptr %17, i32 0, i32 2
  %19 = load ptr, ptr %18, align 8, !tbaa !12
  %20 = icmp ne ptr %19, null
  br i1 %20, label %21, label %25

21:                                               ; preds = %16
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds %class.BinaryTreeNode, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  call void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef %24)
  br label %25

25:                                               ; preds = %21, %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %class.BinaryTreeNode, ptr %26, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  store ptr %28, ptr %3, align 8, !tbaa !5
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = getelementptr inbounds %class.BinaryTreeNode, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !9
  %32 = load ptr, ptr %2, align 8, !tbaa !5
  %33 = getelementptr inbounds %class.BinaryTreeNode, ptr %32, i32 0, i32 2
  store ptr %31, ptr %33, align 8, !tbaa !12
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %class.BinaryTreeNode, ptr %35, i32 0, i32 1
  store ptr %34, ptr %36, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  br label %37

37:                                               ; preds = %25, %6
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 8}
!10 = !{!"_ZTS14BinaryTreeNodeIiE", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !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 nofree nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %14, label %3

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %7, label %6

6:                                                ; preds = %3
  tail call void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef nonnull %5)
  br label %7

7:                                                ; preds = %6, %3
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %.not12 = icmp eq ptr %9, null
  br i1 %.not12, label %11, label %10

10:                                               ; preds = %7
  tail call void @_Z16mirrorBinaryTreeP14BinaryTreeNodeIiE(ptr noundef nonnull %9)
  %.pre = load ptr, ptr %8, align 8, !tbaa !11
  br label %11

11:                                               ; preds = %10, %7
  %12 = phi ptr [ %.pre, %10 ], [ null, %7 ]
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %13, ptr %8, align 8, !tbaa !11
  store ptr %12, ptr %4, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %1, %11
  ret void
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, inaccessiblemem: none) 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" }

!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, !10, i64 8}
!6 = !{!"_ZTS14BinaryTreeNodeIiE", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass