; LLVM IR from PetarV-/Algorithms :: Data Structures (Link-cut Tree)

; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@cmd = external dso_local global [101 x i8], align 16
@p = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %11, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %7 = icmp sle i32 %5, %6
  br i1 %7, label %9, label %8

8:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %14

9:                                                ; preds = %4
  %10 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z9make_treei(i32 noundef %10)
  br label %11

11:                                               ; preds = %9
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = add nsw i32 %12, 1
  store i32 %13, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

14:                                               ; preds = %8
  br label %15

15:                                               ; preds = %44, %14
  %16 = load i32, ptr @m, align 4, !tbaa !5
  %17 = add nsw i32 %16, -1
  store i32 %17, ptr @m, align 4, !tbaa !5
  %18 = icmp ne i32 %16, 0
  br i1 %18, label %19, label %45

19:                                               ; preds = %15
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef @cmd)
  %21 = call i32 @strcmp(ptr noundef @cmd, ptr noundef @.str.2) #7
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %27

23:                                               ; preds = %19
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @p, ptr noundef @q)
  %25 = load i32, ptr @p, align 4, !tbaa !5
  %26 = load i32, ptr @q, align 4, !tbaa !5
  call void @_Z4linkii(i32 noundef %25, i32 noundef %26)
  br label %44

27:                                               ; preds = %19
  %28 = call i32 @strcmp(ptr noundef @cmd, ptr noundef @.str.3) #7
  %29 = icmp eq i32 %28, 0
  br i1 %29, label %30, label %33

30:                                               ; preds = %27
  %31 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef @p)
  %32 = load i32, ptr @p, align 4, !tbaa !5
  call void @_Z3cuti(i32 noundef %32)
  br label %43

33:                                               ; preds = %27
  %34 = call i32 @strcmp(ptr noundef @cmd, ptr noundef @.str.5) #7
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %36, label %42

36:                                               ; preds = %33
  %37 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @p, ptr noundef @q)
  %38 = load i32, ptr @p, align 4, !tbaa !5
  %39 = load i32, ptr @q, align 4, !tbaa !5
  %40 = call noundef i32 @_Z3LCAii(i32 noundef %38, i32 noundef %39)
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.6, i32 noundef %40)
  br label %42

42:                                               ; preds = %36, %33
  br label %43

43:                                               ; preds = %42, %30
  br label %44

44:                                               ; preds = %43, %23
  br label %15, !llvm.loop !11

45:                                               ; preds = %15
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_Z9make_treei(i32 noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #4

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z4linkii(i32 noundef, i32 noundef) #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z3cuti(i32 noundef) #5

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_Z3LCAii(i32 noundef, i32 noundef) #5

attributes #0 = { mustprogress norecurse 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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { inlinehint 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 #4 = { nounwind willreturn memory(read) "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 #5 = { inlinehint 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 #6 = { nounwind }
attributes #7 = { nounwind willreturn memory(read) }

!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"}
!11 = distinct !{!11, !10}


; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@cmd = external dso_local global [101 x i8], align 16
@p = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %.not4 = icmp slt i32 %2, 1
  br i1 %.not4, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %0
  %3 = load i32, ptr @m, align 4, !tbaa !5
  %4 = add nsw i32 %3, -1
  store i32 %4, ptr @m, align 4, !tbaa !5
  %.not36 = icmp eq i32 %3, 0
  br i1 %.not36, label %._crit_edge, label %.lr.ph7

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.05 = phi i32 [ %5, %.lr.ph ], [ 1, %0 ]
  tail call void @_Z9make_treei(i32 noundef %.05)
  %5 = add nuw nsw i32 %.05, 1
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.05, %6
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !9

.lr.ph7:                                          ; preds = %.preheader, %29
  %7 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull @cmd)
  %8 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) @cmd, ptr noundef nonnull dereferenceable(1) @.str.2) #5
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %14

10:                                               ; preds = %.lr.ph7
  %11 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @p, ptr noundef nonnull @q)
  %12 = load i32, ptr @p, align 4, !tbaa !5
  %13 = load i32, ptr @q, align 4, !tbaa !5
  tail call void @_Z4linkii(i32 noundef %12, i32 noundef %13)
  br label %29

14:                                               ; preds = %.lr.ph7
  %15 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) @cmd, ptr noundef nonnull dereferenceable(1) @.str.3) #5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %20

17:                                               ; preds = %14
  %18 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull @p)
  %19 = load i32, ptr @p, align 4, !tbaa !5
  tail call void @_Z3cuti(i32 noundef %19)
  br label %29

20:                                               ; preds = %14
  %21 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) @cmd, ptr noundef nonnull dereferenceable(1) @.str.5) #5
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %29

23:                                               ; preds = %20
  %24 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @p, ptr noundef nonnull @q)
  %25 = load i32, ptr @p, align 4, !tbaa !5
  %26 = load i32, ptr @q, align 4, !tbaa !5
  %27 = tail call noundef i32 @_Z3LCAii(i32 noundef %25, i32 noundef %26)
  %28 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.6, i32 noundef %27)
  br label %29

29:                                               ; preds = %17, %23, %20, %10
  %30 = load i32, ptr @m, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr @m, align 4, !tbaa !5
  %.not3 = icmp eq i32 %30, 0
  br i1 %.not3, label %._crit_edge, label %.lr.ph7, !llvm.loop !11

._crit_edge:                                      ; preds = %29, %.preheader
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_Z9make_treei(i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z4linkii(i32 noundef, i32 noundef) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z3cuti(i32 noundef) local_unnamed_addr #4

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_Z3LCAii(i32 noundef, i32 noundef) local_unnamed_addr #4

attributes #0 = { mustprogress norecurse 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 = { nofree nounwind "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 = { inlinehint 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 #3 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 #4 = { inlinehint 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 #5 = { nounwind willreturn memory(read) }

!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"}
!11 = distinct !{!11, !10}


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