; LLVM IR from KishanBGajera/2024-366-Days-Of-DSA :: Data Structures/Non-Linear/Tree/AVL Tree/C (main)

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

; Function Attrs: nounwind uwtable
define dso_local i32 @heightOfNode(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = icmp ne ptr %4, null
  br i1 %5, label %7, label %6

6:                                                ; preds = %1
  store i32 0, ptr %2, align 4
  br label %30

7:                                                ; preds = %1
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.AVLNode, ptr %8, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = call i32 @heightOfNode(ptr noundef %10)
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.AVLNode, ptr %12, i32 0, i32 2
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  %15 = call i32 @heightOfNode(ptr noundef %14)
  %16 = icmp sgt i32 %11, %15
  br i1 %16, label %17, label %22

17:                                               ; preds = %7
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.AVLNode, ptr %18, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = call i32 @heightOfNode(ptr noundef %20)
  br label %27

22:                                               ; preds = %7
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.AVLNode, ptr %23, i32 0, i32 2
  %25 = load ptr, ptr %24, align 8, !tbaa !12
  %26 = call i32 @heightOfNode(ptr noundef %25)
  br label %27

27:                                               ; preds = %22, %17
  %28 = phi i32 [ %21, %17 ], [ %26, %22 ]
  %29 = add nsw i32 1, %28
  store i32 %29, ptr %2, align 4
  br label %30

30:                                               ; preds = %27, %6
  %31 = load i32, ptr %2, align 4
  ret i32 %31
}

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" }

!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/C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"AVLNode", !11, i64 0, !6, i64 8, !6, i64 16, !11, i64 24}
!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: nofree nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @heightOfNode(ptr noundef readonly %0) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %common.ret6, label %2

common.ret6:                                      ; preds = %1, %2
  %common.ret6.op = phi i32 [ %9, %2 ], [ 0, %1 ]
  ret i32 %common.ret6.op

2:                                                ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = tail call i32 @heightOfNode(ptr noundef %4)
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = tail call i32 @heightOfNode(ptr noundef %7)
  %spec.select = tail call i32 @llvm.smax.i32(i32 %5, i32 %8)
  %9 = add nsw i32 %spec.select, 1
  br label %common.ret6
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

attributes #0 = { nofree nosync nounwind memory(read, 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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"AVLNode", !7, i64 0, !10, i64 8, !10, i64 16, !7, 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 16}


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