; LLVM IR from edualgo/dsa-code-store :: Generic-Tree/Generic-Tree-master/TreeSource/main.ll (Z6heightP8TreeNodeIiE)

; 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.TreeNode = type { i32, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl" }
%"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl" = type { %"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl_data" = type { ptr, 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 nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z6heightP8TreeNodeIiE(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %28, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = sext i32 %7 to i64
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = getelementptr inbounds %class.TreeNode, ptr %9, i32 0, i32 1
  %11 = call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #3
  %12 = icmp ult i64 %8, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %31

14:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %class.TreeNode, ptr %15, i32 0, i32 1
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %18) #3
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %21 = call noundef i32 @_Z6heightP8TreeNodeIiE(ptr noundef %20)
  store i32 %21, ptr %5, align 4, !tbaa !9
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = load i32, ptr %3, align 4, !tbaa !9
  %24 = icmp sgt i32 %22, %23
  br i1 %24, label %25, label %27

25:                                               ; preds = %14
  %26 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %26, ptr %3, align 4, !tbaa !9
  br label %27

27:                                               ; preds = %25, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %28

28:                                               ; preds = %27
  %29 = load i32, ptr %4, align 4, !tbaa !9
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

31:                                               ; preds = %13
  %32 = load i32, ptr %3, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %33
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 #2 = { 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 #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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i32 -2147483647, -2147483648) i32 @_Z6heightP8TreeNodeIiE(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = tail call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #2
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %4 = add nuw nsw i32 %spec.select, 1
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %1
  %.0.lcssa = phi i32 [ 1, %1 ], [ %4, %._crit_edge.loopexit ]
  ret i32 %.0.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %.012 = phi i32 [ %spec.select, %.lr.ph ], [ 0, %1 ]
  %5 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #2
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = tail call noundef i32 @_Z6heightP8TreeNodeIiE(ptr noundef %6)
  %spec.select = tail call i32 @llvm.smax.i32(i32 %7, i32 %.012)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = tail call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #2
  %9 = icmp ugt i64 %8, %indvars.iv.next
  br i1 %9, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !9
}

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

attributes #0 = { mustprogress 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 speculatable willreturn memory(none) }
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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass