; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2017-18/Jan 2018/Plat (atlarge_nlogn)

; 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 }
%struct.centroidDecomp = type { i32, [70001 x i8], [70001 x i32], [70001 x i32], [70001 x %"struct.std::pair"], [70001 x %struct.contain], [70001 x %"class.std::vector.5"], [70001 x %"class.std::vector"] }
%"struct.std::pair" = type { i32, i32 }
%struct.contain = type <{ %"class.std::vector.0", %"class.std::vector", i32, i8, [3 x i8] }>
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = type { %"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl" }
%"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl" = type { %"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl_data" }
%"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"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
@distLeaf = external dso_local global [70001 x i32], align 16
@adj = external dso_local global [70001 x %"class.std::vector"], align 16
@c = external dso_local global %struct.centroidDecomp, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1

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

; 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 i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5inputv() #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @_Z5inputv()
  call void @_ZN14centroidDecompILi70001EE5solveEi(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef 1)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %22, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %7 = add nsw i32 %6, 1
  %8 = icmp slt i32 %5, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %25

10:                                               ; preds = %4
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [70001 x i32], ptr @distLeaf, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [70001 x %"class.std::vector"], ptr @adj, i64 0, i64 %17
  %19 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #6
  %20 = trunc i64 %19 to i32
  %21 = sub nsw i32 2, %20
  call void @_ZN14centroidDecompILi70001EE3updEiii(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef %11, i32 noundef %15, i32 noundef %21)
  br label %22

22:                                               ; preds = %10
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

25:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %47, %25
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = load i32, ptr @n, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  %30 = icmp slt i32 %27, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %50

32:                                               ; preds = %26
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [70001 x %"class.std::vector"], ptr @adj, i64 0, i64 %34
  %36 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %35) #6
  %37 = trunc i64 %36 to i32
  %38 = icmp eq i32 %37, 1
  br i1 %38, label %39, label %41

39:                                               ; preds = %32
  %40 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef 1)
  br label %45

41:                                               ; preds = %32
  %42 = load i32, ptr %3, align 4, !tbaa !5
  %43 = call noundef i32 @_ZN14centroidDecompILi70001EE5queryEi(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef %42)
  %44 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %43)
  br label %45

45:                                               ; preds = %41, %39
  %46 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.6)
  br label %47

47:                                               ; preds = %45
  %48 = load i32, ptr %3, align 4, !tbaa !5
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %3, align 4, !tbaa !5
  br label %26, !llvm.loop !11

50:                                               ; preds = %31
  %51 = load i32, ptr %1, align 4
  ret i32 %51
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN14centroidDecompILi70001EE5solveEi(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN14centroidDecompILi70001EE3updEiii(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef, i32 noundef, i32 noundef) #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #4

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN14centroidDecompILi70001EE5queryEi(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef) #2 align 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) #5

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 = { 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 = { 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 #4 = { "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 = { 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 #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 = !{!"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}


; 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 }
%struct.centroidDecomp = type { i32, [70001 x i8], [70001 x i32], [70001 x i32], [70001 x %"struct.std::pair"], [70001 x %struct.contain], [70001 x %"class.std::vector.5"], [70001 x %"class.std::vector"] }
%"struct.std::pair" = type { i32, i32 }
%struct.contain = type <{ %"class.std::vector.0", %"class.std::vector", i32, i8, [3 x i8] }>
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = type { %"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl" }
%"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl" = type { %"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl_data" }
%"struct.std::_Vector_base<contain, std::allocator<contain>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"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 local_unnamed_addr global i32, align 4
@distLeaf = external dso_local local_unnamed_addr global [70001 x i32], align 16
@adj = external dso_local global [70001 x %"class.std::vector"], align 16
@c = external dso_local global %struct.centroidDecomp, align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.6 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5inputv() local_unnamed_addr #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  tail call void @_Z5inputv()
  tail call void @_ZN14centroidDecompILi70001EE5solveEi(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef 1)
  %1 = load i32, ptr @n, align 4, !tbaa !5
  %.not12 = icmp slt i32 %1, 1
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %2 = icmp slt i32 %10, 1
  br i1 %2, label %._crit_edge, label %.lr.ph16

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %3 = getelementptr inbounds [70001 x i32], ptr @distLeaf, i64 0, i64 %indvars.iv
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds [70001 x %"class.std::vector"], ptr @adj, i64 0, i64 %indvars.iv
  %6 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  %7 = trunc i64 %6 to i32
  %8 = sub nsw i32 2, %7
  %9 = trunc nuw nsw i64 %indvars.iv to i32
  tail call void @_ZN14centroidDecompILi70001EE3updEiii(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef %9, i32 noundef %4, i32 noundef %8)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %.not.not = icmp slt i64 %indvars.iv, %11
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %19, %0, %.preheader
  ret i32 0

.lr.ph16:                                         ; preds = %.preheader, %19
  %indvars.iv18 = phi i64 [ %indvars.iv.next19, %19 ], [ 1, %.preheader ]
  %12 = getelementptr inbounds [70001 x %"class.std::vector"], ptr @adj, i64 0, i64 %indvars.iv18
  %13 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #5
  %14 = and i64 %13, 4294967295
  %15 = icmp eq i64 %14, 1
  br i1 %15, label %19, label %16

16:                                               ; preds = %.lr.ph16
  %17 = trunc nuw nsw i64 %indvars.iv18 to i32
  %18 = tail call noundef i32 @_ZN14centroidDecompILi70001EE5queryEi(ptr noundef nonnull align 8 dereferenceable(8470128) @c, i32 noundef %17)
  br label %19

19:                                               ; preds = %.lr.ph16, %16
  %.sink = phi i32 [ %18, %16 ], [ 1, %.lr.ph16 ]
  %20 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %.sink)
  %21 = 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.6)
  %indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
  %22 = load i32, ptr @n, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %.not11.not = icmp slt i64 %indvars.iv18, %23
  br i1 %.not11.not, label %.lr.ph16, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN14centroidDecompILi70001EE5solveEi(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN14centroidDecompILi70001EE3updEiii(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN14centroidDecompILi70001EE5queryEi(ptr noundef nonnull align 8 dereferenceable(8470128), i32 noundef) local_unnamed_addr #1 align 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 #4

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 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 = { 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 #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" }
attributes #4 = { 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 #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 = !{!"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: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass