; LLVM IR from kazunetakahashi/atcoder :: 2019/0707_ABC133/past (D)

; 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
@N = external dso_local global i32, align 4
@A = external dso_local global [100010 x i64], align 16
@sum = external dso_local global i64, align 8
@ans = external dso_local global [100010 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1

; 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) #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z4calci(i32 noundef) #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #4 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @N)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %18, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = load i32, ptr @N, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %21

13:                                               ; preds = %8
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %15
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %16)
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %2, align 4, !tbaa !5
  br label %8, !llvm.loop !9

21:                                               ; preds = %12
  %22 = load i32, ptr @N, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds i64, ptr @A, i64 %23
  %25 = call noundef i64 @_ZSt10accumulateIPxxET0_T_S2_S1_(ptr noundef @A, ptr noundef %24, i64 noundef 0)
  %26 = sdiv i64 %25, 2
  store i64 %26, ptr @sum, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #7
  store i64 0, ptr %3, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %39, %21
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = load i32, ptr @N, align 4, !tbaa !5
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %42

32:                                               ; preds = %27
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %34
  %36 = load i64, ptr %35, align 8, !tbaa !11
  %37 = load i64, ptr %3, align 8, !tbaa !11
  %38 = add nsw i64 %37, %36
  store i64 %38, ptr %3, align 8, !tbaa !11
  br label %39

39:                                               ; preds = %32
  %40 = load i32, ptr %4, align 4, !tbaa !5
  %41 = add nsw i32 %40, 2
  store i32 %41, ptr %4, align 4, !tbaa !5
  br label %27, !llvm.loop !13

42:                                               ; preds = %31
  %43 = load i64, ptr %3, align 8, !tbaa !11
  %44 = load i64, ptr @sum, align 8, !tbaa !11
  %45 = sub nsw i64 %43, %44
  store i64 %45, ptr @ans, align 16, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %46

46:                                               ; preds = %57, %42
  %47 = load i32, ptr %5, align 4, !tbaa !5
  %48 = load i32, ptr @N, align 4, !tbaa !5
  %49 = icmp slt i32 %47, %48
  br i1 %49, label %51, label %50

50:                                               ; preds = %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  br label %60

51:                                               ; preds = %46
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = call noundef i64 @_Z4calci(i32 noundef %52)
  %54 = load i32, ptr %5, align 4, !tbaa !5
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [100010 x i64], ptr @ans, i64 0, i64 %55
  store i64 %53, ptr %56, align 8, !tbaa !11
  br label %57

57:                                               ; preds = %51
  %58 = load i32, ptr %5, align 4, !tbaa !5
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %5, align 4, !tbaa !5
  br label %46, !llvm.loop !14

60:                                               ; preds = %50
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %61

61:                                               ; preds = %82, %60
  %62 = load i32, ptr %6, align 4, !tbaa !5
  %63 = load i32, ptr @N, align 4, !tbaa !5
  %64 = icmp slt i32 %62, %63
  br i1 %64, label %66, label %65

65:                                               ; preds = %61
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %85

66:                                               ; preds = %61
  %67 = load i32, ptr %6, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [100010 x i64], ptr @ans, i64 0, i64 %68
  %70 = load i64, ptr %69, align 8, !tbaa !11
  %71 = mul nsw i64 %70, 2
  %72 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %71)
  %73 = load i32, ptr %6, align 4, !tbaa !5
  %74 = load i32, ptr @N, align 4, !tbaa !5
  %75 = sub nsw i32 %74, 1
  %76 = icmp slt i32 %73, %75
  br i1 %76, label %77, label %79

77:                                               ; preds = %66
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.5)
  br label %81

79:                                               ; preds = %66
  %80 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %81

81:                                               ; preds = %79, %77
  br label %82

82:                                               ; preds = %81
  %83 = load i32, ptr %6, align 4, !tbaa !5
  %84 = add nsw i32 %83, 1
  store i32 %84, ptr %6, align 4, !tbaa !5
  br label %61, !llvm.loop !15

85:                                               ; preds = %65
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #7
  %86 = load i32, ptr %1, align 4
  ret i32 %86
}

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #5

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt10accumulateIPxxET0_T_S2_S1_(ptr noundef, ptr noundef, i64 noundef) #6

attributes #0 = { 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 #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = { 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 #5 = { "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 = { 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 #7 = { 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 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !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::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
@N = external dso_local global i32, align 4
@A = external dso_local global [100010 x i64], align 16
@sum = external dso_local local_unnamed_addr global i64, align 8
@ans = external dso_local local_unnamed_addr global [100010 x i64], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1

; 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 #0

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #0

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z4calci(i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = 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) @N)
  %2 = load i32, ptr @N, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %2 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %26, %.lr.ph ]
  %4 = getelementptr inbounds i64, ptr @A, i64 %.pre-phi
  %5 = tail call noundef i64 @_ZSt10accumulateIPxxET0_T_S2_S1_(ptr noundef nonnull @A, ptr noundef nonnull %4, i64 noundef 0)
  %6 = sdiv i64 %5, 2
  store i64 %6, ptr @sum, align 8, !tbaa !9
  %7 = load i32, ptr @N, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph26.preheader, label %.preheader.thread

.preheader.thread:                                ; preds = %._crit_edge
  %9 = sub nsw i64 0, %6
  store i64 %9, ptr @ans, align 16, !tbaa !9
  br label %._crit_edge34

.lr.ph26.preheader:                               ; preds = %._crit_edge
  %10 = zext nneg i32 %7 to i64
  %min.iters.check = icmp ult i32 %7, 9
  br i1 %min.iters.check, label %.lr.ph26.preheader55, label %vector.ph

.lr.ph26.preheader55:                             ; preds = %middle.block, %.lr.ph26.preheader
  %indvars.iv38.ph = phi i64 [ 0, %.lr.ph26.preheader ], [ %ind.end, %middle.block ]
  %.01923.ph = phi i64 [ 0, %.lr.ph26.preheader ], [ %22, %middle.block ]
  br label %.lr.ph26

vector.ph:                                        ; preds = %.lr.ph26.preheader
  %11 = add nsw i64 %10, -1
  %12 = lshr i64 %11, 1
  %13 = add nuw i64 %12, 1
  %n.mod.vf = and i64 %13, 3
  %14 = icmp eq i64 %n.mod.vf, 0
  %15 = select i1 %14, i64 4, i64 %n.mod.vf
  %n.vec = sub i64 %13, %15
  %ind.end = shl i64 %n.vec, 1
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <2 x i64> [ zeroinitializer, %vector.ph ], [ %19, %vector.body ]
  %vec.phi52 = phi <2 x i64> [ zeroinitializer, %vector.ph ], [ %20, %vector.body ]
  %offset.idx = shl i64 %index, 1
  %16 = or disjoint i64 %offset.idx, 4
  %17 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %offset.idx
  %18 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %16
  %wide.vec = load <4 x i64>, ptr %17, align 16, !tbaa !9
  %wide.vec53 = load <4 x i64>, ptr %18, align 16, !tbaa !9
  %strided.vec = shufflevector <4 x i64> %wide.vec, <4 x i64> poison, <2 x i32> <i32 0, i32 2>
  %strided.vec54 = shufflevector <4 x i64> %wide.vec53, <4 x i64> poison, <2 x i32> <i32 0, i32 2>
  %19 = add <2 x i64> %strided.vec, %vec.phi
  %20 = add <2 x i64> %strided.vec54, %vec.phi52
  %index.next = add nuw i64 %index, 4
  %21 = icmp eq i64 %index.next, %n.vec
  br i1 %21, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <2 x i64> %20, %19
  %22 = tail call i64 @llvm.vector.reduce.add.v2i64(<2 x i64> %bin.rdx)
  br label %.lr.ph26.preheader55

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %23 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %indvars.iv
  %24 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %23)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %25 = load i32, ptr @N, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = icmp slt i64 %indvars.iv.next, %26
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !15

._crit_edge27:                                    ; preds = %.lr.ph26
  %28 = sub nsw i64 %31, %6
  store i64 %28, ptr @ans, align 16, !tbaa !9
  %.not = icmp eq i32 %7, 1
  br i1 %.not, label %.lr.ph33.preheader, label %.lr.ph31

.lr.ph33.preheader:                               ; preds = %.preheader.loopexit, %._crit_edge27
  br label %.lr.ph33

.lr.ph26:                                         ; preds = %.lr.ph26.preheader55, %.lr.ph26
  %indvars.iv38 = phi i64 [ %indvars.iv.next39, %.lr.ph26 ], [ %indvars.iv38.ph, %.lr.ph26.preheader55 ]
  %.01923 = phi i64 [ %31, %.lr.ph26 ], [ %.01923.ph, %.lr.ph26.preheader55 ]
  %29 = getelementptr inbounds [100010 x i64], ptr @A, i64 0, i64 %indvars.iv38
  %30 = load i64, ptr %29, align 16, !tbaa !9
  %31 = add nsw i64 %30, %.01923
  %indvars.iv.next39 = add nuw nsw i64 %indvars.iv38, 2
  %32 = icmp ult i64 %indvars.iv.next39, %10
  br i1 %32, label %.lr.ph26, label %._crit_edge27, !llvm.loop !16

.preheader.loopexit:                              ; preds = %.lr.ph31
  %33 = icmp sgt i32 %37, 0
  br i1 %33, label %.lr.ph33.preheader, label %._crit_edge34

.lr.ph31:                                         ; preds = %._crit_edge27, %.lr.ph31
  %indvars.iv41 = phi i64 [ %indvars.iv.next42, %.lr.ph31 ], [ 1, %._crit_edge27 ]
  %34 = trunc nuw nsw i64 %indvars.iv41 to i32
  %35 = tail call noundef i64 @_Z4calci(i32 noundef %34)
  %36 = getelementptr inbounds [100010 x i64], ptr @ans, i64 0, i64 %indvars.iv41
  store i64 %35, ptr %36, align 8, !tbaa !9
  %indvars.iv.next42 = add nuw nsw i64 %indvars.iv41, 1
  %37 = load i32, ptr @N, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = icmp slt i64 %indvars.iv.next42, %38
  br i1 %39, label %.lr.ph31, label %.preheader.loopexit, !llvm.loop !17

._crit_edge34:                                    ; preds = %52, %.preheader.thread, %.preheader.loopexit
  ret i32 0

.lr.ph33:                                         ; preds = %.lr.ph33.preheader, %52
  %indvars.iv44 = phi i64 [ %indvars.iv.next45, %52 ], [ 0, %.lr.ph33.preheader ]
  %40 = getelementptr inbounds [100010 x i64], ptr @ans, i64 0, i64 %indvars.iv44
  %41 = load i64, ptr %40, align 8, !tbaa !9
  %42 = shl nsw i64 %41, 1
  %43 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %42)
  %44 = load i32, ptr @N, align 4, !tbaa !5
  %45 = add nsw i32 %44, -1
  %46 = sext i32 %45 to i64
  %47 = icmp slt i64 %indvars.iv44, %46
  br i1 %47, label %48, label %50

48:                                               ; preds = %.lr.ph33
  %49 = 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.5)
  br label %52

50:                                               ; preds = %.lr.ph33
  %51 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %52

52:                                               ; preds = %48, %50
  %indvars.iv.next45 = add nuw nsw i64 %indvars.iv44, 1
  %53 = load i32, ptr @N, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = icmp slt i64 %indvars.iv.next45, %54
  br i1 %55, label %.lr.ph33, label %._crit_edge34, !llvm.loop !18
}

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 #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt10accumulateIPxxET0_T_S2_S1_(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #5

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.vector.reduce.add.v2i64(<2 x i64>) #6

attributes #0 = { 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 #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 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 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 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 #6 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = distinct !{!15, !12}
!16 = distinct !{!16, !12, !14, !13}
!17 = distinct !{!17, !12}
!18 = distinct !{!18, !12}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass