; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/305 Division 2/Problem A (A)

; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::basic_istream" = type { ptr, i64, %"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 }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@k = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = 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
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11)
  %7 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11) #4
  %8 = trunc i64 %7 to i32
  store i32 %8, ptr @l, align 4, !tbaa !5
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @k)
  %10 = load i32, ptr @l, align 4, !tbaa !5
  %11 = load i32, ptr @k, align 4, !tbaa !5
  %12 = srem i32 %10, %11
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %16

14:                                               ; preds = %0
  %15 = call i32 @puts(ptr noundef @.str)
  store i32 0, ptr %1, align 4
  br label %68

16:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %17 = load i32, ptr @l, align 4, !tbaa !5
  %18 = load i32, ptr @k, align 4, !tbaa !5
  %19 = sdiv i32 %17, %18
  store i32 %19, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %59, %16
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = load i32, ptr @l, align 4, !tbaa !5
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  store i32 2, ptr %4, align 4
  br label %63

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %53, %25
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %26
  store i32 5, ptr %4, align 4
  br label %56

31:                                               ; preds = %26
  %32 = load i32, ptr %3, align 4, !tbaa !5
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = add nsw i32 %32, %33
  %35 = sext i32 %34 to i64
  %36 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %35)
  %37 = load i8, ptr %36, align 1, !tbaa !9
  %38 = sext i8 %37 to i32
  %39 = load i32, ptr %3, align 4, !tbaa !5
  %40 = load i32, ptr %2, align 4, !tbaa !5
  %41 = add nsw i32 %39, %40
  %42 = load i32, ptr %5, align 4, !tbaa !5
  %43 = sub nsw i32 %41, %42
  %44 = sub nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %45)
  %47 = load i8, ptr %46, align 1, !tbaa !9
  %48 = sext i8 %47 to i32
  %49 = icmp ne i32 %38, %48
  br i1 %49, label %50, label %52

50:                                               ; preds = %31
  %51 = call i32 @puts(ptr noundef @.str)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %56

52:                                               ; preds = %31
  br label %53

53:                                               ; preds = %52
  %54 = load i32, ptr %5, align 4, !tbaa !5
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %5, align 4, !tbaa !5
  br label %26, !llvm.loop !10

56:                                               ; preds = %50, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  %57 = load i32, ptr %4, align 4
  switch i32 %57, label %63 [
    i32 5, label %58
  ]

58:                                               ; preds = %56
  br label %59

59:                                               ; preds = %58
  %60 = load i32, ptr %2, align 4, !tbaa !5
  %61 = load i32, ptr %3, align 4, !tbaa !5
  %62 = add nsw i32 %61, %60
  store i32 %62, ptr %3, align 4, !tbaa !5
  br label %20, !llvm.loop !12

63:                                               ; preds = %56, %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  %64 = load i32, ptr %4, align 4
  switch i32 %64, label %67 [
    i32 2, label %65
  ]

65:                                               ; preds = %63
  %66 = call i32 @puts(ptr noundef @.str.2)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %67

67:                                               ; preds = %65, %63
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %68

68:                                               ; preds = %67, %14
  %69 = load i32, ptr %1, align 4
  ret i32 %69
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

declare i32 @puts(ptr noundef) #1

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { "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 = { 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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::basic_istream" = type { ptr, i64, %"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 }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@k = external dso_local global i32, align 4
@l = external dso_local local_unnamed_addr global i32, align 4
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = 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 noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11)
  %2 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11) #4
  %3 = trunc i64 %2 to i32
  store i32 %3, ptr @l, align 4, !tbaa !5
  %4 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @k)
  %5 = load i32, ptr @l, align 4, !tbaa !5
  %6 = load i32, ptr @k, align 4, !tbaa !5
  %7 = srem i32 %5, %6
  %8 = sdiv i32 %5, %6
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %9, label %.split.us

9:                                                ; preds = %0
  %.not2227 = icmp sgt i32 %5, 0
  %.not2125 = icmp sgt i32 %8, 0
  %or.cond = and i1 %.not2227, %.not2125
  br i1 %or.cond, label %.preheader.us.preheader, label %.split.us

.preheader.us.preheader:                          ; preds = %9
  %10 = zext nneg i32 %8 to i64
  %wide.trip.count = zext nneg i32 %8 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %..critedge_crit_edge.us
  %indvars.iv31 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next32, %..critedge_crit_edge.us ]
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, %10
  br label %12

11:                                               ; preds = %12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %..critedge_crit_edge.us, label %12, !llvm.loop !9

12:                                               ; preds = %.preheader.us, %11
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %11 ]
  %13 = add nuw nsw i64 %indvars.iv, %indvars.iv31
  %14 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %13)
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = xor i64 %indvars.iv, -1
  %17 = add nsw i64 %indvars.iv.next32, %16
  %18 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %17)
  %19 = load i8, ptr %18, align 1, !tbaa !11
  %.not20.us = icmp eq i8 %15, %19
  br i1 %.not20.us, label %11, label %.split.us

..critedge_crit_edge.us:                          ; preds = %11
  %20 = load i32, ptr @l, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %.not22.us = icmp slt i64 %indvars.iv.next32, %21
  br i1 %.not22.us, label %.preheader.us, label %.split.us, !llvm.loop !12

.split.us:                                        ; preds = %..critedge_crit_edge.us, %12, %9, %0
  %.str.sink = phi ptr [ @.str, %0 ], [ @.str.2, %9 ], [ @.str, %12 ], [ @.str.2, %..critedge_crit_edge.us ]
  %22 = tail call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.sink)
  ret i32 0
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #2 align 2

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 = { 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 #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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !10}


; Effective O3 passes: ConstraintEliminationPass,DivRemPairsPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass