; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/228 Division 1/Problem A (C)

; 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.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@n = external dso_local global i32, align 4
@w = external dso_local global [100 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 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
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %17, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %20

12:                                               ; preds = %7
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100 x i32], ptr @w, i64 0, i64 %14
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %15)
  br label %17

17:                                               ; preds = %12
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %2, align 4, !tbaa !5
  br label %7, !llvm.loop !9

20:                                               ; preds = %11
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr @w, i64 %22
  call void @_ZSt4sortIPiEvT_S1_(ptr noundef @w, ptr noundef %23)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %24 = load i32, ptr @n, align 4, !tbaa !5
  %25 = sub nsw i32 %24, 1
  store i32 %25, ptr %3, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %57, %20
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = icmp sge i32 %27, 1
  br i1 %28, label %30, label %29

29:                                               ; preds = %26
  store i32 5, ptr %4, align 4
  br label %60

30:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %51, %30
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = load i32, ptr @n, align 4, !tbaa !5
  %34 = icmp slt i32 %32, %33
  br i1 %34, label %36, label %35

35:                                               ; preds = %31
  store i32 8, ptr %4, align 4
  br label %54

36:                                               ; preds = %31
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = load i32, ptr %3, align 4, !tbaa !5
  %39 = sdiv i32 %37, %38
  %40 = load i32, ptr %5, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [100 x i32], ptr @w, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = icmp sgt i32 %39, %43
  br i1 %44, label %45, label %50

45:                                               ; preds = %36
  %46 = load i32, ptr %3, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %47)
  %49 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %48, ptr noundef @.str.1)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %54

50:                                               ; preds = %36
  br label %51

51:                                               ; preds = %50
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %5, align 4, !tbaa !5
  br label %31, !llvm.loop !11

54:                                               ; preds = %45, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  %55 = load i32, ptr %4, align 4
  switch i32 %55, label %60 [
    i32 8, label %56
  ]

56:                                               ; preds = %54
  br label %57

57:                                               ; preds = %56
  %58 = load i32, ptr %3, align 4, !tbaa !5
  %59 = add nsw i32 %58, -1
  store i32 %59, ptr %3, align 4, !tbaa !5
  br label %26, !llvm.loop !12

60:                                               ; preds = %54, %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  %61 = load i32, ptr %4, align 4
  switch i32 %61, label %66 [
    i32 5, label %62
    i32 1, label %64
  ]

62:                                               ; preds = %60
  %63 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
  store i32 0, ptr %1, align 4
  br label %64

64:                                               ; preds = %62, %60
  %65 = load i32, ptr %1, align 4
  ret i32 %65

66:                                               ; preds = %60
  unreachable
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiEvT_S1_(ptr noundef, ptr noundef) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

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 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 }

!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}
!12 = distinct !{!12, !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"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@n = external dso_local global i32, align 4
@w = external dso_local global [100 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 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)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %2 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %18, %.lr.ph ]
  %4 = getelementptr inbounds i32, ptr @w, i64 %.pre-phi
  tail call void @_ZSt4sortIPiEvT_S1_(ptr noundef nonnull @w, ptr noundef nonnull %4)
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 1
  br i1 %6, label %.preheader.us.preheader, label %._crit_edge33

.preheader.us.preheader:                          ; preds = %._crit_edge
  %wide.trip.count = zext nneg i32 %5 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %..loopexit_crit_edge.us
  %.015.in31.us = phi i32 [ %.01532.us, %..loopexit_crit_edge.us ], [ %5, %.preheader.us.preheader ]
  %.01532.us = add nsw i32 %.015.in31.us, -1
  br label %8

7:                                                ; preds = %8
  %indvars.iv.next39 = add nuw nsw i64 %indvars.iv38, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next39, %wide.trip.count
  br i1 %exitcond.not, label %..loopexit_crit_edge.us, label %8, !llvm.loop !9

8:                                                ; preds = %.preheader.us, %7
  %indvars.iv38 = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next39, %7 ]
  %9 = trunc nuw nsw i64 %indvars.iv38 to i32
  %10 = sdiv i32 %9, %.01532.us
  %11 = getelementptr inbounds [100 x i32], ptr @w, i64 0, i64 %indvars.iv38
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = icmp sgt i32 %10, %12
  br i1 %13, label %.split.us, label %7

..loopexit_crit_edge.us:                          ; preds = %7
  %14 = icmp sgt i32 %.015.in31.us, 2
  br i1 %14, label %.preheader.us, label %._crit_edge33

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %15 = getelementptr inbounds [100 x i32], ptr @w, i64 0, i64 %indvars.iv
  %16 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %15)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load i32, ptr @n, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = icmp slt i64 %indvars.iv.next, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !11

.split.us:                                        ; preds = %8
  %20 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %.015.in31.us)
  %21 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %20, ptr noundef nonnull @.str.1)
  br label %23

._crit_edge33:                                    ; preds = %..loopexit_crit_edge.us, %._crit_edge
  %22 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.2)
  br label %23

23:                                               ; preds = %.split.us, %._crit_edge33
  ret i32 0
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiEvT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #3

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


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass