; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/297 Division 2/Problem B (B)

; 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 }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@m = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@a = external dso_local global [200002 x i32], align 16
@sum = external dso_local global [2000002 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; 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
  store i32 0, ptr %1, align 4
  %5 = 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)
  %6 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11) #7
  %7 = trunc i64 %6 to i32
  store i32 %7, ptr @l, align 4, !tbaa !5
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %29, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load i32, ptr @m, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %32

14:                                               ; preds = %9
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @x)
  %16 = load i32, ptr @x, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %18, align 4, !tbaa !5
  %21 = load i32, ptr @l, align 4, !tbaa !5
  %22 = load i32, ptr @x, align 4, !tbaa !5
  %23 = sub nsw i32 %21, %22
  %24 = add nsw i32 %23, 1
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = sub nsw i32 %27, 1
  store i32 %28, ptr %26, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %14
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !9

32:                                               ; preds = %13
  %33 = load i32, ptr getelementptr inbounds ([200002 x i32], ptr @a, i64 0, i64 1), align 4, !tbaa !5
  store i32 %33, ptr getelementptr inbounds ([2000002 x i32], ptr @sum, i64 0, i64 1), align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  store i32 2, ptr %3, align 4, !tbaa !5
  br label %34

34:                                               ; preds = %53, %32
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = load i32, ptr @l, align 4, !tbaa !5
  %37 = icmp sle i32 %35, %36
  br i1 %37, label %39, label %38

38:                                               ; preds = %34
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  br label %56

39:                                               ; preds = %34
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = sub nsw i32 %40, 1
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = add nsw i32 %44, %48
  %50 = load i32, ptr %3, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %51
  store i32 %49, ptr %52, align 4, !tbaa !5
  br label %53

53:                                               ; preds = %39
  %54 = load i32, ptr %3, align 4, !tbaa !5
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %3, align 4, !tbaa !5
  br label %34, !llvm.loop !11

56:                                               ; preds = %38
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %57

57:                                               ; preds = %83, %56
  %58 = load i32, ptr %4, align 4, !tbaa !5
  %59 = load i32, ptr @l, align 4, !tbaa !5
  %60 = sdiv i32 %59, 2
  %61 = icmp sle i32 %58, %60
  br i1 %61, label %63, label %62

62:                                               ; preds = %57
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %86

63:                                               ; preds = %57
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %65
  %67 = load i32, ptr %66, align 4, !tbaa !5
  %68 = and i32 %67, 1
  %69 = icmp ne i32 %68, 0
  br i1 %69, label %70, label %82

70:                                               ; preds = %63
  %71 = load i32, ptr %4, align 4, !tbaa !5
  %72 = sub nsw i32 %71, 1
  %73 = sext i32 %72 to i64
  %74 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %73)
  %75 = load i32, ptr @l, align 4, !tbaa !5
  %76 = load i32, ptr %4, align 4, !tbaa !5
  %77 = sub nsw i32 %76, 1
  %78 = sub nsw i32 %75, %77
  %79 = sub nsw i32 %78, 1
  %80 = sext i32 %79 to i64
  %81 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %80)
  call void @_ZSt4swapIcENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 1 dereferenceable(1) %74, ptr noundef nonnull align 1 dereferenceable(1) %81) #7
  br label %82

82:                                               ; preds = %70, %63
  br label %83

83:                                               ; preds = %82
  %84 = load i32, ptr %4, align 4, !tbaa !5
  %85 = add nsw i32 %84, 1
  store i32 %85, ptr %4, align 4, !tbaa !5
  br label %57, !llvm.loop !12

86:                                               ; preds = %62
  %87 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11)
  %88 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %87, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  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)) #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

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

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIcENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) #4

; 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: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #5

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #6 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)) #5

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 = { 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 #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 = { 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 #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 = distinct !{!11, !10}
!12 = distinct !{!12, !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::__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 }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@m = external dso_local global i32, align 4
@l = external dso_local local_unnamed_addr global i32, align 4
@x = external dso_local global i32, align 4
@a = external dso_local local_unnamed_addr global [200002 x i32], align 16
@sum = external dso_local local_unnamed_addr global [2000002 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; 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) #6
  %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) @m)
  %5 = load i32, ptr @m, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = load i32, ptr @l, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %7 = phi i32 [ %.pre, %.._crit_edge_crit_edge ], [ %19, %.lr.ph ]
  %8 = load i32, ptr getelementptr inbounds (i8, ptr @a, i64 4), align 4, !tbaa !5
  store i32 %8, ptr getelementptr inbounds (i8, ptr @sum, i64 4), align 4, !tbaa !5
  %.not17 = icmp slt i32 %7, 2
  br i1 %.not17, label %._crit_edge24, label %.lr.ph20.preheader

.lr.ph20.preheader:                               ; preds = %._crit_edge
  %9 = add nuw i32 %7, 1
  %wide.trip.count = zext i32 %9 to i64
  %10 = add nsw i64 %wide.trip.count, -2
  %11 = add nsw i64 %wide.trip.count, -3
  %xtraiter = and i64 %10, 3
  %12 = icmp ult i64 %11, 3
  br i1 %12, label %.preheader.unr-lcssa, label %.lr.ph20.preheader.new

.lr.ph20.preheader.new:                           ; preds = %.lr.ph20.preheader
  %unroll_iter = and i64 %10, -4
  br label %.lr.ph20

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01316 = phi i32 [ %25, %.lr.ph ], [ 0, %0 ]
  %13 = 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) @x)
  %14 = load i32, ptr @x, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %16, align 4, !tbaa !5
  %19 = load i32, ptr @l, align 4, !tbaa !5
  %reass.sub = sub i32 %19, %14
  %20 = add i32 %reass.sub, 1
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add nsw i32 %23, -1
  store i32 %24, ptr %22, align 4, !tbaa !5
  %25 = add nuw nsw i32 %.01316, 1
  %26 = load i32, ptr @m, align 4, !tbaa !5
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !9

.preheader.unr-lcssa:                             ; preds = %.lr.ph20, %.lr.ph20.preheader
  %.unr = phi i32 [ %8, %.lr.ph20.preheader ], [ %48, %.lr.ph20 ]
  %indvars.iv.unr = phi i64 [ 2, %.lr.ph20.preheader ], [ %indvars.iv.next.3, %.lr.ph20 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.preheader, label %.lr.ph20.epil

.lr.ph20.epil:                                    ; preds = %.preheader.unr-lcssa, %.lr.ph20.epil
  %28 = phi i32 [ %31, %.lr.ph20.epil ], [ %.unr, %.preheader.unr-lcssa ]
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph20.epil ], [ %indvars.iv.unr, %.preheader.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph20.epil ], [ 0, %.preheader.unr-lcssa ]
  %29 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %indvars.iv.epil
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = add nsw i32 %30, %28
  %32 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv.epil
  store i32 %31, ptr %32, align 4, !tbaa !5
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.preheader, label %.lr.ph20.epil, !llvm.loop !11

.preheader:                                       ; preds = %.lr.ph20.epil, %.preheader.unr-lcssa
  br i1 %.not17, label %._crit_edge24, label %.lr.ph23

.lr.ph20:                                         ; preds = %.lr.ph20, %.lr.ph20.preheader.new
  %33 = phi i32 [ %8, %.lr.ph20.preheader.new ], [ %48, %.lr.ph20 ]
  %indvars.iv = phi i64 [ 2, %.lr.ph20.preheader.new ], [ %indvars.iv.next.3, %.lr.ph20 ]
  %niter = phi i64 [ 0, %.lr.ph20.preheader.new ], [ %niter.next.3, %.lr.ph20 ]
  %34 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %indvars.iv
  %35 = load i32, ptr %34, align 8, !tbaa !5
  %36 = add nsw i32 %35, %33
  %37 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv
  store i32 %36, ptr %37, align 8, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %38 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %indvars.iv.next
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = add nsw i32 %39, %36
  %41 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv.next
  store i32 %40, ptr %41, align 4, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %42 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %indvars.iv.next.1
  %43 = load i32, ptr %42, align 8, !tbaa !5
  %44 = add nsw i32 %43, %40
  %45 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv.next.1
  store i32 %44, ptr %45, align 8, !tbaa !5
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %46 = getelementptr inbounds [200002 x i32], ptr @a, i64 0, i64 %indvars.iv.next.2
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %48 = add nsw i32 %47, %44
  %49 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv.next.2
  store i32 %48, ptr %49, align 4, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %.preheader.unr-lcssa, label %.lr.ph20, !llvm.loop !13

._crit_edge24:                                    ; preds = %64, %._crit_edge, %.preheader
  %50 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11)
  %51 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %50, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0

.lr.ph23:                                         ; preds = %.preheader, %64
  %52 = phi i32 [ %65, %64 ], [ %7, %.preheader ]
  %indvars.iv26 = phi i64 [ %indvars.iv.next27, %64 ], [ 1, %.preheader ]
  %53 = getelementptr inbounds [2000002 x i32], ptr @sum, i64 0, i64 %indvars.iv26
  %54 = load i32, ptr %53, align 4, !tbaa !5
  %55 = and i32 %54, 1
  %.not15 = icmp eq i32 %55, 0
  br i1 %.not15, label %64, label %56

56:                                               ; preds = %.lr.ph23
  %57 = add nsw i64 %indvars.iv26, -1
  %58 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %57)
  %59 = load i32, ptr @l, align 4, !tbaa !5
  %60 = trunc nuw nsw i64 %indvars.iv26 to i32
  %61 = sub i32 %59, %60
  %62 = sext i32 %61 to i64
  %63 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %62)
  tail call void @_ZSt4swapIcENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 1 dereferenceable(1) %58, ptr noundef nonnull align 1 dereferenceable(1) %63) #6
  %.pre29 = load i32, ptr @l, align 4, !tbaa !5
  br label %64

64:                                               ; preds = %.lr.ph23, %56
  %65 = phi i32 [ %52, %.lr.ph23 ], [ %.pre29, %56 ]
  %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1
  %66 = sdiv i32 %65, 2
  %67 = sext i32 %66 to i64
  %.not14.not = icmp slt i64 %indvars.iv26, %67
  br i1 %.not14.not, label %.lr.ph23, label %._crit_edge24, !llvm.loop !14
}

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: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIcENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef nonnull align 1 dereferenceable(1)) 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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4

; 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 #5 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)) #4

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 = { 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 = { 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 = { 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, !12}
!12 = !{!"llvm.loop.unroll.disable"}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}


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