; LLVM IR from manishbisht/Competitive-Programming :: Spoj/Practice/CPP (GSS1 - Can you answer these queries)

; 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
@a = external dso_local global [50005 x i64], align 16
@q = external dso_local global i64, align 8
@l = external dso_local global i64, align 8
@r = 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 [50005 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
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @q)
  store i64 0, ptr @i, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %36, %14
  %17 = load i64, ptr @i, align 8, !tbaa !5
  %18 = load i64, ptr @q, align 8, !tbaa !5
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %20, label %39

20:                                               ; preds = %16
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) @l)
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %21, ptr noundef nonnull align 8 dereferenceable(8) @r)
  %23 = load i64, ptr @l, align 8, !tbaa !5
  %24 = add nsw i64 %23, -1
  store i64 %24, ptr @l, align 8, !tbaa !5
  %25 = load i64, ptr @r, align 8, !tbaa !5
  %26 = add nsw i64 %25, -1
  store i64 %26, ptr @r, align 8, !tbaa !5
  %27 = load i64, ptr @l, align 8, !tbaa !5
  %28 = getelementptr inbounds i64, ptr @a, i64 %27
  %29 = load i64, ptr @r, align 8, !tbaa !5
  %30 = getelementptr inbounds i64, ptr @a, i64 %29
  %31 = getelementptr inbounds i64, ptr %30, i64 1
  %32 = call noundef ptr @_ZSt11max_elementIPxET_S1_S1_(ptr noundef %28, ptr noundef %31)
  %33 = load i64, ptr %32, align 8, !tbaa !5
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %33)
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %34, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %36

36:                                               ; preds = %20
  %37 = load i64, ptr @i, align 8, !tbaa !5
  %38 = add nsw i64 %37, 1
  store i64 %38, ptr @i, align 8, !tbaa !5
  br label %16, !llvm.loop !11

39:                                               ; preds = %16
  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: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZSt11max_elementIPxET_S1_S1_(ptr noundef, ptr noundef) #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}


; 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
@a = external dso_local global [50005 x i64], align 16
@q = external dso_local global i64, align 8
@l = external dso_local global i64, align 8
@r = 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() 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

.lr.ph:                                           ; preds = %0, %.lr.ph
  %storemerge2 = phi i64 [ %7, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds [50005 x i64], ptr @a, i64 0, i64 %storemerge2
  %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, %0
  %10 = 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) @q)
  store i64 0, ptr @i, align 8, !tbaa !5
  %11 = load i64, ptr @q, align 8, !tbaa !5
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %.lr.ph4, label %._crit_edge5

.lr.ph4:                                          ; preds = %._crit_edge, %.lr.ph4
  %13 = 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) @l)
  %14 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %13, ptr noundef nonnull align 8 dereferenceable(8) @r)
  %15 = load i64, ptr @l, align 8, !tbaa !5
  %16 = add nsw i64 %15, -1
  store i64 %16, ptr @l, align 8, !tbaa !5
  %17 = load i64, ptr @r, align 8, !tbaa !5
  %18 = add nsw i64 %17, -1
  store i64 %18, ptr @r, align 8, !tbaa !5
  %19 = getelementptr inbounds i64, ptr @a, i64 %16
  %gep = getelementptr i64, ptr @a, i64 %17
  %20 = tail call noundef ptr @_ZSt11max_elementIPxET_S1_S1_(ptr noundef nonnull %19, ptr noundef nonnull %gep)
  %21 = load i64, ptr %20, align 8, !tbaa !5
  %22 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %21)
  %23 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %22, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %24 = load i64, ptr @i, align 8, !tbaa !5
  %25 = add nsw i64 %24, 1
  store i64 %25, ptr @i, align 8, !tbaa !5
  %26 = load i64, ptr @q, align 8, !tbaa !5
  %27 = icmp slt i64 %25, %26
  br i1 %27, label %.lr.ph4, label %._crit_edge5, !llvm.loop !11

._crit_edge5:                                     ; preds = %.lr.ph4, %._crit_edge
  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: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZSt11max_elementIPxET_S1_S1_(ptr noundef, ptr noundef) local_unnamed_addr #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

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}


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