; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/199 Division 2/Problem E/E.ll (Z9decomposeii)

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

@par = external dso_local global [131072 x i32], align 16
@erased = external dso_local global [131072 x i32], align 16
@g = external dso_local global [131072 x %"class.std::vector"], align 16
@cg = external dso_local global [131072 x %"class.std::vector"], align 16
@totalNodes = external dso_local global i32, align 4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7getSizeii(i32 noundef, i32 noundef) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z11getCentroidii(i32 noundef, i32 noundef) #3

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9decomposeii(i32 noundef %0, i32 noundef %1) #3 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  store i32 0, ptr @totalNodes, align 4, !tbaa !5
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7getSizeii(i32 noundef %9, i32 noundef %10)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = call noundef i32 @_Z11getCentroidii(i32 noundef %11, i32 noundef %12)
  store i32 %13, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = icmp eq i32 %14, -1
  br i1 %15, label %16, label %21

16:                                               ; preds = %2
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [131072 x i32], ptr @par, i64 0, i64 %19
  store i32 %17, ptr %20, align 4, !tbaa !5
  br label %29

21:                                               ; preds = %2
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [131072 x i32], ptr @par, i64 0, i64 %24
  store i32 %22, ptr %25, align 4, !tbaa !5
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @cg, i64 0, i64 %27
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %28, ptr noundef nonnull align 4 dereferenceable(4) %5)
  br label %29

29:                                               ; preds = %21, %16
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [131072 x i32], ptr @erased, i64 0, i64 %31
  store i32 1, ptr %32, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @g, i64 0, i64 %34
  %36 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %35) #4
  %37 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %36, ptr %37, align 8
  br label %38

38:                                               ; preds = %58, %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @g, i64 0, i64 %40
  %42 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %41) #4
  %43 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %42, ptr %43, align 8
  %44 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  br i1 %44, label %46, label %45

45:                                               ; preds = %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %61

46:                                               ; preds = %38
  %47 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [131072 x i32], ptr @erased, i64 0, i64 %49
  %51 = load i32, ptr %50, align 4, !tbaa !5
  %52 = icmp ne i32 %51, 0
  br i1 %52, label %57, label %53

53:                                               ; preds = %46
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z9decomposeii(i32 noundef %55, i32 noundef %56)
  br label %57

57:                                               ; preds = %53, %46
  br label %58

58:                                               ; preds = %57
  %59 = call ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEi(ptr noundef nonnull align 8 dereferenceable(8) %6, i32 noundef 0) #4
  %60 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %59, ptr %60, align 8
  br label %38, !llvm.loop !9

61:                                               ; preds = %45
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 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"}


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

@par = external dso_local local_unnamed_addr global [131072 x i32], align 16
@erased = external dso_local local_unnamed_addr global [131072 x i32], align 16
@g = external dso_local global [131072 x %"class.std::vector"], align 16
@cg = external dso_local global [131072 x %"class.std::vector"], align 16
@totalNodes = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_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 ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7getSizeii(i32 noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z11getCentroidii(i32 noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9decomposeii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #3 {
  %3 = alloca i32, align 4
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store i32 0, ptr @totalNodes, align 4, !tbaa !5
  tail call void @_Z7getSizeii(i32 noundef %0, i32 noundef %0)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %6 = tail call noundef i32 @_Z11getCentroidii(i32 noundef %0, i32 noundef %0)
  store i32 %6, ptr %3, align 4, !tbaa !5
  %7 = icmp eq i32 %1, -1
  %8 = sext i32 %6 to i64
  %9 = getelementptr inbounds [131072 x i32], ptr @par, i64 0, i64 %8
  br i1 %7, label %10, label %11

10:                                               ; preds = %2
  store i32 %6, ptr %9, align 4, !tbaa !5
  br label %14

11:                                               ; preds = %2
  store i32 %1, ptr %9, align 4, !tbaa !5
  %12 = sext i32 %1 to i64
  %13 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @cg, i64 0, i64 %12
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %13, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %.pre = load i32, ptr %3, align 4, !tbaa !5
  %.pre7 = sext i32 %.pre to i64
  br label %14

14:                                               ; preds = %11, %10
  %.pre-phi = phi i64 [ %.pre7, %11 ], [ %8, %10 ]
  %15 = getelementptr inbounds [131072 x i32], ptr @erased, i64 0, i64 %.pre-phi
  store i32 1, ptr %15, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %16 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @g, i64 0, i64 %.pre-phi
  %17 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %16) #4
  store ptr %17, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @g, i64 0, i64 %19
  %21 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %20) #4
  store ptr %21, ptr %5, align 8
  %22 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  br i1 %22, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %32, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  ret void

.lr.ph:                                           ; preds = %14, %32
  %23 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [131072 x i32], ptr @erased, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %.not = icmp eq i32 %27, 0
  br i1 %.not, label %28, label %32

28:                                               ; preds = %.lr.ph
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z9decomposeii(i32 noundef %30, i32 noundef %31)
  br label %32

32:                                               ; preds = %.lr.ph, %28
  %33 = call ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEi(ptr noundef nonnull align 8 dereferenceable(8) %4, i32 noundef 0) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [131072 x %"class.std::vector"], ptr @g, i64 0, i64 %35
  %37 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %36) #4
  store ptr %37, ptr %5, align 8
  %38 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  br i1 %38, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 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"}


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