; LLVM IR from Dev-XYS/Algorithms :: Link-Cut-Tree.ll (ZN13link_cut_tree5splayEii)

; 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.link_cut_tree = type { [200010 x [2 x i32]], [200010 x i32], [200010 x i32], [200010 x i32] }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200), i32 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200), i32 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN13link_cut_tree5splayEii(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %1, i32 noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  br label %8

8:                                                ; preds = %47, %3
  %9 = getelementptr inbounds %class.link_cut_tree, ptr %7, i32 0, i32 1
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [200010 x i32], ptr %9, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = icmp ne i32 %13, %14
  br i1 %15, label %16, label %49

16:                                               ; preds = %8
  %17 = getelementptr inbounds %class.link_cut_tree, ptr %7, i32 0, i32 1
  %18 = getelementptr inbounds %class.link_cut_tree, ptr %7, i32 0, i32 1
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [200010 x i32], ptr %18, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [200010 x i32], ptr %17, i64 0, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = icmp ne i32 %25, %26
  br i1 %27, label %28, label %47

28:                                               ; preds = %16
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = call noundef i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200) %7, i32 noundef %29)
  %31 = getelementptr inbounds %class.link_cut_tree, ptr %7, i32 0, i32 1
  %32 = load i32, ptr %5, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [200010 x i32], ptr %31, i64 0, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !9
  %36 = call noundef i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200) %7, i32 noundef %35)
  %37 = icmp eq i32 %30, %36
  br i1 %37, label %38, label %44

38:                                               ; preds = %28
  %39 = getelementptr inbounds %class.link_cut_tree, ptr %7, i32 0, i32 1
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [200010 x i32], ptr %39, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !9
  call void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200) %7, i32 noundef %43)
  br label %46

44:                                               ; preds = %28
  %45 = load i32, ptr %5, align 4, !tbaa !9
  call void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200) %7, i32 noundef %45)
  br label %46

46:                                               ; preds = %44, %38
  br label %47

47:                                               ; preds = %46, %16
  %48 = load i32, ptr %5, align 4, !tbaa !9
  call void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200) %7, i32 noundef %48)
  br label %8, !llvm.loop !11

49:                                               ; preds = %8
  ret void
}

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" }

!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 i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN13link_cut_tree5splayEii(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = getelementptr inbounds i8, ptr %0, i64 1600080
  %5 = sext i32 %1 to i64
  %6 = getelementptr inbounds [200010 x i32], ptr %4, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %.not11 = icmp eq i32 %7, %2
  br i1 %.not11, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %19
  %8 = phi i32 [ %20, %19 ], [ %7, %3 ]
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [200010 x i32], ptr %4, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not10 = icmp eq i32 %11, %2
  br i1 %.not10, label %19, label %12

12:                                               ; preds = %.lr.ph
  %13 = tail call noundef i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %1)
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = tail call noundef i32 @_ZN13link_cut_tree5whichEi(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %14)
  %16 = icmp eq i32 %13, %15
  br i1 %16, label %17, label %.sink.split

17:                                               ; preds = %12
  %18 = load i32, ptr %6, align 4, !tbaa !5
  br label %.sink.split

.sink.split:                                      ; preds = %12, %17
  %.sink = phi i32 [ %18, %17 ], [ %1, %12 ]
  tail call void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %.sink)
  br label %19

19:                                               ; preds = %.sink.split, %.lr.ph
  tail call void @_ZN13link_cut_tree6rotateEi(ptr noundef nonnull align 4 dereferenceable(4000200) %0, i32 noundef %1)
  %20 = load i32, ptr %6, align 4, !tbaa !5
  %.not = icmp eq i32 %20, %2
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %19, %3
  ret void
}

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" }

!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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass