; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/213 Division 1/Problem C (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 }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; 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
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %8 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  %14 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %16
  %18 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %17, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 -1, ptr %3, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 10, ptr %4, align 4, !tbaa !8
  br label %19

19:                                               ; preds = %60, %0
  %20 = load i32, ptr %4, align 4, !tbaa !8
  %21 = icmp sle i32 %20, 5000000
  br i1 %21, label %23, label %22

22:                                               ; preds = %19
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %63

23:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 1, ptr %7, align 4, !tbaa !8
  br label %24

24:                                               ; preds = %49, %23
  %25 = load i32, ptr %7, align 4, !tbaa !8
  %26 = load i32, ptr %7, align 4, !tbaa !8
  %27 = mul nsw i32 %25, %26
  %28 = load i32, ptr %4, align 4, !tbaa !8
  %29 = icmp sle i32 %27, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %24
  store i32 5, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %52

31:                                               ; preds = %24
  %32 = load i32, ptr %4, align 4, !tbaa !8
  %33 = load i32, ptr %7, align 4, !tbaa !8
  %34 = srem i32 %32, %33
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %36, label %48

36:                                               ; preds = %31
  %37 = load i32, ptr %6, align 4, !tbaa !8
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %6, align 4, !tbaa !8
  %39 = load i32, ptr %4, align 4, !tbaa !8
  %40 = load i32, ptr %4, align 4, !tbaa !8
  %41 = mul nsw i32 %39, %40
  %42 = load i32, ptr %7, align 4, !tbaa !8
  %43 = icmp ne i32 %41, %42
  br i1 %43, label %44, label %47

44:                                               ; preds = %36
  %45 = load i32, ptr %6, align 4, !tbaa !8
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %6, align 4, !tbaa !8
  br label %47

47:                                               ; preds = %44, %36
  br label %48

48:                                               ; preds = %47, %31
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %7, align 4, !tbaa !8
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %7, align 4, !tbaa !8
  br label %24, !llvm.loop !11

52:                                               ; preds = %30
  %53 = load i32, ptr %6, align 4, !tbaa !8
  %54 = load i32, ptr %2, align 4, !tbaa !8
  %55 = icmp sgt i32 %53, %54
  br i1 %55, label %56, label %59

56:                                               ; preds = %52
  %57 = load i32, ptr %6, align 4, !tbaa !8
  store i32 %57, ptr %2, align 4, !tbaa !8
  %58 = load i32, ptr %4, align 4, !tbaa !8
  store i32 %58, ptr %3, align 4, !tbaa !8
  br label %59

59:                                               ; preds = %56, %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %60

60:                                               ; preds = %59
  %61 = load i32, ptr %4, align 4, !tbaa !8
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %4, align 4, !tbaa !8
  br label %19, !llvm.loop !13

63:                                               ; preds = %22
  %64 = load i32, ptr %3, align 4, !tbaa !8
  call void @_Z2trIiJiEEvT_DpRKT0_(i32 noundef %64, ptr noundef nonnull align 4 dereferenceable(4) %2)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %65 = load i32, ptr %1, align 4
  ret i32 %65
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z2trIiJiEEvT_DpRKT0_(i32 noundef, ptr noundef nonnull align 4 dereferenceable(4)) #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 = { "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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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 }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %3 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %4 = getelementptr i8, ptr %3, i64 -24
  %5 = load i64, ptr %4, align 8
  %6 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %5
  %7 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %6, ptr noundef null)
  %8 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %9 = getelementptr i8, ptr %8, i64 -24
  %10 = load i64, ptr %9, align 8
  %11 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %10
  %12 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %11, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  br label %.preheader

.preheader:                                       ; preds = %0, %15
  %.01929 = phi i32 [ 10, %0 ], [ %17, %15 ]
  %.02028 = phi i32 [ -1, %0 ], [ %spec.select31, %15 ]
  %.018.lcssa2627 = phi i32 [ 0, %0 ], [ %spec.select30, %15 ]
  %13 = mul nuw nsw i32 %.01929, %.01929
  br label %18

14:                                               ; preds = %15
  store i32 %spec.select30, ptr %1, align 4, !tbaa !8
  call void @_Z2trIiJiEEvT_DpRKT0_(i32 noundef %spec.select31, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

15:                                               ; preds = %18
  %16 = icmp sgt i32 %.1, %.018.lcssa2627
  %spec.select30 = tail call i32 @llvm.smax.i32(i32 %.1, i32 %.018.lcssa2627)
  %spec.select31 = select i1 %16, i32 %.01929, i32 %.02028
  %17 = add nuw nsw i32 %.01929, 1
  %exitcond.not = icmp eq i32 %17, 5000001
  br i1 %exitcond.not, label %14, label %.preheader, !llvm.loop !11

18:                                               ; preds = %.preheader, %18
  %.024 = phi i32 [ 1, %.preheader ], [ %21, %18 ]
  %.01823 = phi i32 [ 0, %.preheader ], [ %.1, %18 ]
  %19 = urem i32 %.01929, %.024
  %20 = icmp eq i32 %19, 0
  %.not22 = icmp eq i32 %13, %.024
  %spec.select.v = select i1 %.not22, i32 1, i32 2
  %spec.select = select i1 %20, i32 %spec.select.v, i32 0
  %.1 = add nuw nsw i32 %.01823, %spec.select
  %21 = add nuw nsw i32 %.024, 1
  %22 = mul nuw nsw i32 %21, %21
  %.not = icmp ugt i32 %22, %.01929
  br i1 %.not, label %15, label %18, !llvm.loop !13
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z2trIiJiEEvT_DpRKT0_(i32 noundef, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #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 = { 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #6 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; Effective O3 passes: DSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass