; LLVM IR from codemistic/Data-Structures-and-Algorithms :: Trees (Binary_tree_Array)

; 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"

@tree = external dso_local global [16 x i8], align 16

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_right_child(i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_left_child(i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @is_leaf(i32 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_max(i32 noundef, i32 noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @get_height(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [16 x i8], ptr @tree, i64 0, i64 %5
  %7 = load i8, ptr %6, align 1, !tbaa !9
  %8 = sext i8 %7 to i32
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %17, label %10

10:                                               ; preds = %1
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = icmp sle i32 %11, 0
  br i1 %12, label %17, label %13

13:                                               ; preds = %10
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = call i32 @is_leaf(i32 noundef %14)
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %13, %10, %1
  store i32 0, ptr %2, align 4
  br label %27

18:                                               ; preds = %13
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = call i32 @get_left_child(i32 noundef %19)
  %21 = call i32 @get_height(i32 noundef %20)
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = call i32 @get_right_child(i32 noundef %22)
  %24 = call i32 @get_height(i32 noundef %23)
  %25 = call i32 @get_max(i32 noundef %21, i32 noundef %24)
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %2, align 4
  br label %27

27:                                               ; preds = %18, %17
  %28 = load i32, ptr %2, align 4
  ret i32 %28
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, 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"

@tree = external dso_local local_unnamed_addr global [16 x i8], align 16

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_right_child(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_left_child(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @is_leaf(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @get_max(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -2147483647, -2147483648) i32 @get_height(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = getelementptr inbounds [16 x i8], ptr @tree, i64 0, i64 %2
  %4 = load i8, ptr %3, align 1, !tbaa !5
  %5 = icmp eq i8 %4, 0
  %6 = icmp slt i32 %0, 1
  %or.cond = or i1 %6, %5
  br i1 %or.cond, label %common.ret8, label %7

7:                                                ; preds = %1
  %8 = tail call i32 @is_leaf(i32 noundef %0)
  %.not = icmp eq i32 %8, 0
  br i1 %.not, label %9, label %common.ret8

common.ret8:                                      ; preds = %1, %7, %9
  %common.ret8.op = phi i32 [ %15, %9 ], [ 0, %7 ], [ 0, %1 ]
  ret i32 %common.ret8.op

9:                                                ; preds = %7
  %10 = tail call i32 @get_left_child(i32 noundef %0)
  %11 = tail call i32 @get_height(i32 noundef %10)
  %12 = tail call i32 @get_right_child(i32 noundef %0)
  %13 = tail call i32 @get_height(i32 noundef %12)
  %14 = tail call i32 @get_max(i32 noundef %11, i32 noundef %13)
  %15 = add nsw i32 %14, 1
  br label %common.ret8
}

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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass