; LLVM IR from manishbisht/Competitive-Programming :: Codeforces/Educational Codeforces Round 15 (Powers of Two)

; 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_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" }

@n = external dso_local global i64, align 8
@i = external dso_local global i64, align 8
@j = external dso_local global i64, align 8
@a = external dso_local global [100000 x i64], align 16
@temp = external dso_local global i64, align 8
@_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
  store i32 0, ptr %1, align 4
  %2 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  store i64 0, ptr @i, align 8, !tbaa !5
  br label %3

3:                                                ; preds = %11, %0
  %4 = load i64, ptr @i, align 8, !tbaa !5
  %5 = load i64, ptr @n, align 8, !tbaa !5
  %6 = icmp slt i64 %4, %5
  br i1 %6, label %7, label %14

7:                                                ; preds = %3
  %8 = load i64, ptr @i, align 8, !tbaa !5
  %9 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %8
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %9)
  br label %11

11:                                               ; preds = %7
  %12 = load i64, ptr @i, align 8, !tbaa !5
  %13 = add nsw i64 %12, 1
  store i64 %13, ptr @i, align 8, !tbaa !5
  br label %3, !llvm.loop !9

14:                                               ; preds = %3
  store i64 0, ptr @temp, align 8, !tbaa !5
  store i64 0, ptr @i, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %52, %14
  %16 = load i64, ptr @i, align 8, !tbaa !5
  %17 = load i64, ptr @n, align 8, !tbaa !5
  %18 = icmp slt i64 %16, %17
  br i1 %18, label %19, label %55

19:                                               ; preds = %15
  %20 = load i64, ptr @i, align 8, !tbaa !5
  %21 = add nsw i64 %20, 1
  store i64 %21, ptr @j, align 8, !tbaa !5
  br label %22

22:                                               ; preds = %48, %19
  %23 = load i64, ptr @j, align 8, !tbaa !5
  %24 = load i64, ptr @n, align 8, !tbaa !5
  %25 = icmp slt i64 %23, %24
  br i1 %25, label %26, label %51

26:                                               ; preds = %22
  %27 = load i64, ptr @i, align 8, !tbaa !5
  %28 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !5
  %30 = load i64, ptr @j, align 8, !tbaa !5
  %31 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %30
  %32 = load i64, ptr %31, align 8, !tbaa !5
  %33 = add nsw i64 %29, %32
  %34 = load i64, ptr @i, align 8, !tbaa !5
  %35 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %34
  %36 = load i64, ptr %35, align 8, !tbaa !5
  %37 = load i64, ptr @j, align 8, !tbaa !5
  %38 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %37
  %39 = load i64, ptr %38, align 8, !tbaa !5
  %40 = add nsw i64 %36, %39
  %41 = sub nsw i64 %40, 1
  %42 = and i64 %33, %41
  %43 = icmp eq i64 %42, 0
  br i1 %43, label %44, label %47

44:                                               ; preds = %26
  %45 = load i64, ptr @temp, align 8, !tbaa !5
  %46 = add nsw i64 %45, 1
  store i64 %46, ptr @temp, align 8, !tbaa !5
  br label %47

47:                                               ; preds = %44, %26
  br label %48

48:                                               ; preds = %47
  %49 = load i64, ptr @j, align 8, !tbaa !5
  %50 = add nsw i64 %49, 1
  store i64 %50, ptr @j, align 8, !tbaa !5
  br label %22, !llvm.loop !11

51:                                               ; preds = %22
  br label %52

52:                                               ; preds = %51
  %53 = load i64, ptr @i, align 8, !tbaa !5
  %54 = add nsw i64 %53, 1
  store i64 %54, ptr @i, align 8, !tbaa !5
  br label %15, !llvm.loop !12

55:                                               ; preds = %15
  %56 = load i64, ptr @temp, align 8, !tbaa !5
  %57 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %56)
  %58 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %57, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 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: 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)) #2

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 = { 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 = { 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" }

!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 = 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::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" }

@n = external dso_local global i64, align 8
@i = external dso_local local_unnamed_addr global i64, align 8
@j = external dso_local local_unnamed_addr global i64, align 8
@a = external dso_local global [100000 x i64], align 16
@temp = external dso_local local_unnamed_addr global i64, align 8
@_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 @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @n)
  store i64 0, ptr @i, align 8, !tbaa !5
  %2 = load i64, ptr @n, align 8, !tbaa !5
  %3 = icmp sgt i64 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge.thread

._crit_edge.thread:                               ; preds = %0
  store i64 0, ptr @temp, align 8, !tbaa !5
  br label %26

.lr.ph:                                           ; preds = %0, %.lr.ph
  %storemerge5 = phi i64 [ %7, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge5
  %5 = 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) %4)
  %6 = load i64, ptr @i, align 8, !tbaa !5
  %7 = add nsw i64 %6, 1
  store i64 %7, ptr @i, align 8, !tbaa !5
  %8 = load i64, ptr @n, align 8, !tbaa !5
  %9 = icmp slt i64 %7, %8
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph
  store i64 0, ptr @temp, align 8, !tbaa !5
  %10 = icmp sgt i64 %8, 0
  br i1 %10, label %.preheader, label %26

.preheader:                                       ; preds = %._crit_edge, %._crit_edge9
  %storemerge317 = phi i64 [ %storemerge46, %._crit_edge9 ], [ 0, %._crit_edge ]
  %temp.promoted1516 = phi i64 [ %temp.promoted12, %._crit_edge9 ], [ 0, %._crit_edge ]
  %storemerge46 = add nuw nsw i64 %storemerge317, 1
  %11 = icmp slt i64 %storemerge46, %8
  br i1 %11, label %.lr.ph8, label %._crit_edge9

.lr.ph8:                                          ; preds = %.preheader
  %12 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge317
  %13 = load i64, ptr %12, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %.lr.ph8, %23
  %temp.promoted14 = phi i64 [ %temp.promoted1516, %.lr.ph8 ], [ %temp.promoted13, %23 ]
  %storemerge47 = phi i64 [ %storemerge46, %.lr.ph8 ], [ %storemerge4, %23 ]
  %15 = phi i64 [ %temp.promoted1516, %.lr.ph8 ], [ %24, %23 ]
  %16 = getelementptr inbounds [100000 x i64], ptr @a, i64 0, i64 %storemerge47
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = add nsw i64 %17, %13
  %19 = tail call range(i64 0, 65) i64 @llvm.ctpop.i64(i64 %18)
  %20 = icmp ult i64 %19, 2
  br i1 %20, label %21, label %23

21:                                               ; preds = %14
  %22 = add nsw i64 %15, 1
  store i64 %22, ptr @temp, align 8, !tbaa !5
  br label %23

23:                                               ; preds = %14, %21
  %temp.promoted13 = phi i64 [ %temp.promoted14, %14 ], [ %22, %21 ]
  %24 = phi i64 [ %15, %14 ], [ %22, %21 ]
  %storemerge4 = add nuw nsw i64 %storemerge47, 1
  %25 = icmp slt i64 %storemerge4, %8
  br i1 %25, label %14, label %._crit_edge9, !llvm.loop !11

._crit_edge9:                                     ; preds = %23, %.preheader
  %temp.promoted12 = phi i64 [ %temp.promoted1516, %.preheader ], [ %temp.promoted13, %23 ]
  %exitcond.not = icmp eq i64 %storemerge46, %8
  br i1 %exitcond.not, label %._crit_edge18, label %.preheader, !llvm.loop !12

._crit_edge18:                                    ; preds = %._crit_edge9
  store i64 %8, ptr @j, align 8, !tbaa !5
  br label %26

26:                                               ; preds = %._crit_edge.thread, %._crit_edge18, %._crit_edge
  %27 = phi i64 [ %temp.promoted12, %._crit_edge18 ], [ 0, %._crit_edge ], [ 0, %._crit_edge.thread ]
  %storemerge3.lcssa = phi i64 [ %8, %._crit_edge18 ], [ 0, %._crit_edge ], [ 0, %._crit_edge.thread ]
  store i64 %storemerge3.lcssa, ptr @i, align 8, !tbaa !5
  %28 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %27)
  %29 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %28, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 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 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)) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.ctpop.i64(i64) #3

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 = { 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 = { 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 #3 = { 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 = !{!"long long", !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}


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