; LLVM IR from eyangch/competitive-programming :: Codeforces/1691/f.ll (Z3dfsxx)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@K = external dso_local global i64, align 8
@G = external dso_local global [200000 x %"class.std::vector"], align 16
@tot = external dso_local global [200000 x i64], align 16
@sub = external dso_local global [200000 x i64], align 16
@sz = external dso_local global [200000 x i64], align 16
@sum = external dso_local global i64, align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z1tRx(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3nCrxx(i64 noundef, i64 noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3dfsxx(i64 noundef %0, i64 noundef %1) #2 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !5
  %10 = load i64, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %10
  store i64 1, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %12 = load i64, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @G, i64 0, i64 %12
  store ptr %13, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #4
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %17) #4
  %19 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %18, ptr %19, align 8
  br label %20

20:                                               ; preds = %52, %2
  %21 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br i1 %21, label %23, label %22

22:                                               ; preds = %20
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %54

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %25 = load i64, ptr %24, align 8, !tbaa !5
  store i64 %25, ptr %9, align 8, !tbaa !5
  %26 = load i64, ptr %9, align 8, !tbaa !5
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = icmp eq i64 %26, %27
  br i1 %28, label %29, label %30

29:                                               ; preds = %23
  store i32 3, ptr %8, align 4
  br label %49

30:                                               ; preds = %23
  %31 = load i64, ptr %9, align 8, !tbaa !5
  %32 = load i64, ptr %3, align 8, !tbaa !5
  call void @_Z3dfsxx(i64 noundef %31, i64 noundef %32)
  %33 = load i64, ptr %9, align 8, !tbaa !5
  %34 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %33
  %35 = load i64, ptr %34, align 8, !tbaa !5
  %36 = load i64, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %36
  %38 = load i64, ptr %37, align 8, !tbaa !5
  %39 = add nsw i64 %38, %35
  store i64 %39, ptr %37, align 8, !tbaa !5
  %40 = load i64, ptr %9, align 8, !tbaa !5
  %41 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %40
  %42 = load i64, ptr %41, align 8, !tbaa !5
  %43 = load i64, ptr @K, align 8, !tbaa !5
  %44 = call noundef i64 @_Z3nCrxx(i64 noundef %42, i64 noundef %43)
  %45 = load i64, ptr %3, align 8, !tbaa !5
  %46 = getelementptr inbounds [200000 x i64], ptr @sub, i64 0, i64 %45
  %47 = load i64, ptr %46, align 8, !tbaa !5
  %48 = add nsw i64 %47, %44
  store i64 %48, ptr %46, align 8, !tbaa !5
  store i32 0, ptr %8, align 4
  br label %49

49:                                               ; preds = %30, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  %50 = load i32, ptr %8, align 4
  switch i32 %50, label %75 [
    i32 0, label %51
    i32 3, label %52
  ]

51:                                               ; preds = %49
  br label %52

52:                                               ; preds = %51, %49
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br label %20

54:                                               ; preds = %22
  %55 = load i64, ptr %3, align 8, !tbaa !5
  %56 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %55
  %57 = load i64, ptr %56, align 8, !tbaa !5
  %58 = load i64, ptr @K, align 8, !tbaa !5
  %59 = call noundef i64 @_Z3nCrxx(i64 noundef %57, i64 noundef %58)
  %60 = load i64, ptr %3, align 8, !tbaa !5
  %61 = getelementptr inbounds [200000 x i64], ptr @tot, i64 0, i64 %60
  store i64 %59, ptr %61, align 8, !tbaa !5
  %62 = load i64, ptr %3, align 8, !tbaa !5
  %63 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %62
  %64 = load i64, ptr %63, align 8, !tbaa !5
  %65 = load i64, ptr %3, align 8, !tbaa !5
  %66 = getelementptr inbounds [200000 x i64], ptr @tot, i64 0, i64 %65
  %67 = load i64, ptr %66, align 8, !tbaa !5
  %68 = load i64, ptr %3, align 8, !tbaa !5
  %69 = getelementptr inbounds [200000 x i64], ptr @sub, i64 0, i64 %68
  %70 = load i64, ptr %69, align 8, !tbaa !5
  %71 = sub nsw i64 %67, %70
  %72 = mul nsw i64 %64, %71
  %73 = load i64, ptr @sum, align 8, !tbaa !5
  %74 = add nsw i64 %73, %72
  store i64 %74, ptr @sum, align 8, !tbaa !5
  call void @_Z1tRx(ptr noundef nonnull align 8 dereferenceable(8) @sum)
  ret void

75:                                               ; preds = %49
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = { 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 }

!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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@K = external dso_local local_unnamed_addr global i64, align 8
@G = external dso_local global [200000 x %"class.std::vector"], align 16
@tot = external dso_local local_unnamed_addr global [200000 x i64], align 16
@sub = external dso_local local_unnamed_addr global [200000 x i64], align 16
@sz = external dso_local local_unnamed_addr global [200000 x i64], align 16
@sum = external dso_local global i64, align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z1tRx(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3nCrxx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z3dfsxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %0
  store i64 1, ptr %5, align 8, !tbaa !5
  %6 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @G, i64 0, i64 %0
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %7 = tail call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #3
  store ptr %7, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %8 = tail call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #3
  store ptr %8, ptr %4, align 8
  %9 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %9, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %10 = getelementptr inbounds [200000 x i64], ptr @sub, i64 0, i64 %0
  br label %22

._crit_edge:                                      ; preds = %36, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %11 = load i64, ptr %5, align 8, !tbaa !5
  %12 = load i64, ptr @K, align 8, !tbaa !5
  %13 = call noundef i64 @_Z3nCrxx(i64 noundef %11, i64 noundef %12)
  %14 = getelementptr inbounds [200000 x i64], ptr @tot, i64 0, i64 %0
  store i64 %13, ptr %14, align 8, !tbaa !5
  %15 = load i64, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds [200000 x i64], ptr @sub, i64 0, i64 %0
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = sub nsw i64 %13, %17
  %19 = mul nsw i64 %18, %15
  %20 = load i64, ptr @sum, align 8, !tbaa !5
  %21 = add nsw i64 %19, %20
  store i64 %21, ptr @sum, align 8, !tbaa !5
  call void @_Z1tRx(ptr noundef nonnull align 8 dereferenceable(8) @sum)
  ret void

22:                                               ; preds = %.lr.ph, %36
  %23 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %24 = load i64, ptr %23, align 8, !tbaa !5
  %25 = icmp eq i64 %24, %1
  br i1 %25, label %36, label %26

26:                                               ; preds = %22
  call void @_Z3dfsxx(i64 noundef %24, i64 noundef %0)
  %27 = getelementptr inbounds [200000 x i64], ptr @sz, i64 0, i64 %24
  %28 = load i64, ptr %27, align 8, !tbaa !5
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = add nsw i64 %29, %28
  store i64 %30, ptr %5, align 8, !tbaa !5
  %31 = load i64, ptr %27, align 8, !tbaa !5
  %32 = load i64, ptr @K, align 8, !tbaa !5
  %33 = call noundef i64 @_Z3nCrxx(i64 noundef %31, i64 noundef %32)
  %34 = load i64, ptr %10, align 8, !tbaa !5
  %35 = add nsw i64 %34, %33
  store i64 %35, ptr %10, align 8, !tbaa !5
  br label %36

36:                                               ; preds = %22, %26
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %38 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %38, label %22, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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