; LLVM IR from upupming/algorithm :: acwing/算法竞赛进阶指南/0x12-队列/135. 最大子序和 (main)

; 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::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"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" }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@a = external dso_local global i32, align 4
@sum = external dso_local global i32, align 4
@ans = external dso_local global i32, align 4
@dq = external dso_local global %"class.std::deque", 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
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %6 = 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)
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %6, 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  store i32 0, ptr %3, align 4, !tbaa !5
  %8 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJiiEEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80) @dq, ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %59, %0
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = icmp sle i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  br label %62

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) @a)
  %16 = load i32, ptr @a, align 4, !tbaa !5
  %17 = load i32, ptr @sum, align 4, !tbaa !5
  %18 = add nsw i32 %17, %16
  store i32 %18, ptr @sum, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %31, %14
  %20 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %20, label %29, label %21

21:                                               ; preds = %19
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %24 = getelementptr inbounds %"struct.std::pair", ptr %23, i32 0, i32 1
  %25 = load i32, ptr %24, align 4, !tbaa !9
  %26 = sub nsw i32 %22, %25
  %27 = load i32, ptr @m, align 4, !tbaa !5
  %28 = icmp sgt i32 %26, %27
  br label %29

29:                                               ; preds = %21, %19
  %30 = phi i1 [ false, %19 ], [ %28, %21 ]
  br i1 %30, label %31, label %32

31:                                               ; preds = %29
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br label %19, !llvm.loop !11

32:                                               ; preds = %29
  %33 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %33, label %34, label %37

34:                                               ; preds = %32
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) @sum)
  %36 = load i32, ptr %35, align 4, !tbaa !5
  store i32 %36, ptr @ans, align 4, !tbaa !5
  br label %57

37:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  %38 = load i32, ptr @sum, align 4, !tbaa !5
  %39 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %40 = getelementptr inbounds %"struct.std::pair", ptr %39, i32 0, i32 0
  %41 = load i32, ptr %40, align 4, !tbaa !13
  %42 = sub nsw i32 %38, %41
  store i32 %42, ptr %5, align 4, !tbaa !5
  %43 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %44 = load i32, ptr %43, align 4, !tbaa !5
  store i32 %44, ptr @ans, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  br label %45

45:                                               ; preds = %55, %37
  %46 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %46, label %53, label %47

47:                                               ; preds = %45
  %48 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %49 = getelementptr inbounds %"struct.std::pair", ptr %48, i32 0, i32 0
  %50 = load i32, ptr %49, align 4, !tbaa !13
  %51 = load i32, ptr @sum, align 4, !tbaa !5
  %52 = icmp sge i32 %50, %51
  br label %53

53:                                               ; preds = %47, %45
  %54 = phi i1 [ false, %45 ], [ %52, %47 ]
  br i1 %54, label %55, label %56

55:                                               ; preds = %53
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br label %45, !llvm.loop !14

56:                                               ; preds = %53
  br label %57

57:                                               ; preds = %56, %34
  %58 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJRiS5_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80) @dq, ptr noundef nonnull align 4 dereferenceable(4) @sum, ptr noundef nonnull align 4 dereferenceable(4) %4)
  br label %59

59:                                               ; preds = %57
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = add nsw i32 %60, 1
  store i32 %61, ptr %4, align 4, !tbaa !5
  br label %9, !llvm.loop !15

62:                                               ; preds = %13
  %63 = load i32, ptr @ans, align 4, !tbaa !5
  %64 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %63)
  %65 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %64, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  %66 = load i32, ptr %1, align 4
  ret i32 %66
}

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: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJiiEEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

; 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: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJRiS5_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 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)) #6

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 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 = { 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 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 = { 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 #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 = !{!10, !6, i64 4}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}


; 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::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"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 i32, align 4
@m = external dso_local global i32, align 4
@a = external dso_local global i32, align 4
@sum = external dso_local global i32, align 4
@ans = external dso_local global i32, align 4
@dq = external dso_local global %"class.std::deque", 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 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = 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)
  %6 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef nonnull align 4 dereferenceable(4) @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  store i32 0, ptr %2, align 4, !tbaa !5
  %7 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJiiEEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80) @dq, ptr noundef nonnull align 4 dereferenceable(4) %1, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  store i32 1, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr @n, align 4, !tbaa !5
  %.not7 = icmp slt i32 %8, 1
  br i1 %.not7, label %._crit_edge, label %.lr.ph8

._crit_edge:                                      ; preds = %.critedge2, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  %9 = load i32, ptr @ans, align 4, !tbaa !5
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %9)
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0

.lr.ph8:                                          ; preds = %0, %.critedge2
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @a)
  %13 = load i32, ptr @a, align 4, !tbaa !5
  %14 = load i32, ptr @sum, align 4, !tbaa !5
  %15 = add nsw i32 %14, %13
  store i32 %15, ptr @sum, align 4, !tbaa !5
  %16 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %16, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph8, %24
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %19 = getelementptr inbounds i8, ptr %18, i64 4
  %20 = load i32, ptr %19, align 4, !tbaa !9
  %21 = sub nsw i32 %17, %20
  %22 = load i32, ptr @m, align 4, !tbaa !5
  %23 = icmp sgt i32 %21, %22
  br i1 %23, label %24, label %.critedge

24:                                               ; preds = %.lr.ph
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %25 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %25, label %.critedge, label %.lr.ph, !llvm.loop !11

.critedge:                                        ; preds = %.lr.ph, %24, %.lr.ph8
  %26 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %26, label %27, label %30

27:                                               ; preds = %.critedge
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) @sum)
  %29 = load i32, ptr %28, align 4, !tbaa !5
  store i32 %29, ptr @ans, align 4, !tbaa !5
  br label %.critedge2

30:                                               ; preds = %.critedge
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  %31 = load i32, ptr @sum, align 4, !tbaa !5
  %32 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %33 = load i32, ptr %32, align 4, !tbaa !13
  %34 = sub nsw i32 %31, %33
  store i32 %34, ptr %4, align 4, !tbaa !5
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) @ans, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %36 = load i32, ptr %35, align 4, !tbaa !5
  store i32 %36, ptr @ans, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  %37 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %37, label %.critedge2, label %.lr.ph5

.lr.ph5:                                          ; preds = %30, %41
  %38 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %39 = load i32, ptr %38, align 4, !tbaa !13
  %40 = load i32, ptr @sum, align 4, !tbaa !5
  %.not3 = icmp slt i32 %39, %40
  br i1 %.not3, label %.critedge2, label %41

41:                                               ; preds = %.lr.ph5
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  %42 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @dq) #7
  br i1 %42, label %.critedge2, label %.lr.ph5, !llvm.loop !14

.critedge2:                                       ; preds = %41, %.lr.ph5, %30, %27
  %43 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJRiS5_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80) @dq, ptr noundef nonnull align 4 dereferenceable(4) @sum, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %44 = load i32, ptr %3, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %3, align 4, !tbaa !5
  %46 = load i32, ptr @n, align 4, !tbaa !5
  %.not.not = icmp slt i32 %44, %46
  br i1 %.not.not, label %.lr.ph8, label %._crit_edge, !llvm.loop !15
}

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: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJiiEEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE5frontEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE12emplace_backIJRiS5_EEERS1_DpOT_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

; 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 #2 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)) #6

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 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 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 = { 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 #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 = !{!10, !6, i64 4}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}


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