; LLVM IR from xirc/cp-algorithm :: aoj/ITP2/ITP2-2A (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::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" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@_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 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca %"class.std::allocator", align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %13 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %14 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %16
  %18 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %17, ptr noundef null)
  %19 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %20 = getelementptr i8, ptr %19, i64 -24
  %21 = load i64, ptr %20, align 8
  %22 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %21
  %23 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %22, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  %24 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %25 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %24, ptr noundef nonnull align 4 dereferenceable(4) %3)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #6
  %26 = load i32, ptr %2, align 4, !tbaa !8
  %27 = sext i32 %26 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #6
  call void @_ZNSaISt5stackIiSt5dequeIiSaIiEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  invoke void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %27, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %28 unwind label %34

28:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  store i32 0, ptr %8, align 4, !tbaa !8
  br label %29

29:                                               ; preds = %107, %28
  %30 = load i32, ptr %8, align 4, !tbaa !8
  %31 = load i32, ptr %3, align 4, !tbaa !8
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %38, label %33

33:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %111

34:                                               ; preds = %0
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %6, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %7, align 4
  call void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #6
  br label %113

38:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  %39 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %9)
          to label %40 unwind label %52

40:                                               ; preds = %38
  %41 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %39, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %42 unwind label %52

42:                                               ; preds = %40
  %43 = load i32, ptr %9, align 4, !tbaa !8
  %44 = icmp eq i32 %43, 0
  br i1 %44, label %45, label %60

45:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #6
  %46 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %47 unwind label %56

47:                                               ; preds = %45
  %48 = load i32, ptr %10, align 4, !tbaa !8
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %49) #6
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %50, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %51 unwind label %56

51:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %106

52:                                               ; preds = %103, %97, %90, %63, %40, %38
  %53 = landingpad { ptr, i32 }
          cleanup
  %54 = extractvalue { ptr, i32 } %53, 0
  store ptr %54, ptr %6, align 8
  %55 = extractvalue { ptr, i32 } %53, 1
  store i32 %55, ptr %7, align 4
  br label %110

56:                                               ; preds = %47, %45
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %6, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #6
  br label %110

60:                                               ; preds = %42
  %61 = load i32, ptr %9, align 4, !tbaa !8
  %62 = icmp eq i32 %61, 1
  br i1 %62, label %63, label %87

63:                                               ; preds = %60
  %64 = load i32, ptr %10, align 4, !tbaa !8
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %65) #6
  %67 = invoke noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %66)
          to label %68 unwind label %52

68:                                               ; preds = %63
  %69 = icmp ne i64 %67, 0
  br i1 %69, label %70, label %86

70:                                               ; preds = %68
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  %71 = load i32, ptr %10, align 4, !tbaa !8
  %72 = sext i32 %71 to i64
  %73 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %72) #6
  %74 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %73)
          to label %75 unwind label %82

75:                                               ; preds = %70
  %76 = load i32, ptr %74, align 4, !tbaa !8
  store i32 %76, ptr %12, align 4, !tbaa !8
  %77 = load i32, ptr %12, align 4, !tbaa !8
  %78 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %77)
          to label %79 unwind label %82

79:                                               ; preds = %75
  %80 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %78, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %81 unwind label %82

81:                                               ; preds = %79
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %86

82:                                               ; preds = %79, %75, %70
  %83 = landingpad { ptr, i32 }
          cleanup
  %84 = extractvalue { ptr, i32 } %83, 0
  store ptr %84, ptr %6, align 8
  %85 = extractvalue { ptr, i32 } %83, 1
  store i32 %85, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %110

86:                                               ; preds = %81, %68
  br label %105

87:                                               ; preds = %60
  %88 = load i32, ptr %9, align 4, !tbaa !8
  %89 = icmp eq i32 %88, 2
  br i1 %89, label %90, label %103

90:                                               ; preds = %87
  %91 = load i32, ptr %10, align 4, !tbaa !8
  %92 = sext i32 %91 to i64
  %93 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %92) #6
  %94 = invoke noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %93)
          to label %95 unwind label %52

95:                                               ; preds = %90
  %96 = icmp ne i64 %94, 0
  br i1 %96, label %97, label %102

97:                                               ; preds = %95
  %98 = load i32, ptr %10, align 4, !tbaa !8
  %99 = sext i32 %98 to i64
  %100 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %99) #6
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %100)
          to label %101 unwind label %52

101:                                              ; preds = %97
  br label %102

102:                                              ; preds = %101, %95
  br label %104

103:                                              ; preds = %87
  invoke void @__cxa_rethrow() #7
          to label %119 unwind label %52

104:                                              ; preds = %102
  br label %105

105:                                              ; preds = %104, %86
  br label %106

106:                                              ; preds = %105, %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %107

107:                                              ; preds = %106
  %108 = load i32, ptr %8, align 4, !tbaa !8
  %109 = add nsw i32 %108, 1
  store i32 %109, ptr %8, align 4, !tbaa !8
  br label %29, !llvm.loop !11

110:                                              ; preds = %82, %56, %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  call void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  br label %113

111:                                              ; preds = %33
  store i32 0, ptr %1, align 4
  call void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %112 = load i32, ptr %1, align 4
  ret i32 %112

113:                                              ; preds = %110, %34
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %114

114:                                              ; preds = %113
  %115 = load ptr, ptr %6, align 8
  %116 = load i32, ptr %7, align 4
  %117 = insertvalue { ptr, i32 } poison, ptr %115, 0
  %118 = insertvalue { ptr, i32 } %117, i32 %116, 1
  resume { ptr, i32 } %118

119:                                              ; preds = %103
  unreachable
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

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

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 nounwind uwtable
declare dso_local void @_ZNSaISt5stackIiSt5dequeIiSaIiEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #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) #4 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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

declare void @__cxa_rethrow()

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 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 = { "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 = { 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 = { 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 = { nounwind }
attributes #7 = { noreturn }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::stack<int>, std::allocator<std::stack<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@_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 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  %14 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %16
  %18 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %17, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %20 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %19, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #6
  %21 = load i32, ptr %1, align 4, !tbaa !8
  %22 = sext i32 %21 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  call void @_ZNSaISt5stackIiSt5dequeIiSaIiEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %22, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %23 unwind label %26

23:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = icmp sgt i32 %24, 0
  br i1 %25, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %68, %23
  call void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

26:                                               ; preds = %0
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %73

.lr.ph:                                           ; preds = %23, %68
  %.012 = phi i32 [ %69, %68 ], [ 0, %23 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #6
  %28 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %29 unwind label %.loopexit

29:                                               ; preds = %.lr.ph
  %30 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %28, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %31 unwind label %.loopexit

31:                                               ; preds = %29
  %32 = load i32, ptr %5, align 4, !tbaa !8
  switch i32 %32, label %67 [
    i32 0, label %33
    i32 1, label %42
    i32 2, label %58
  ]

33:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #6
  %34 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %35 unwind label %40

35:                                               ; preds = %33
  %36 = load i32, ptr %6, align 4, !tbaa !8
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %37) #6
  invoke void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %38, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %39 unwind label %40

39:                                               ; preds = %35
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #6
  br label %68

.loopexit:                                        ; preds = %.lr.ph, %29
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %72

.loopexit.split-lp:                               ; preds = %67
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %72

40:                                               ; preds = %35, %33
  %41 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #6
  br label %72

42:                                               ; preds = %31
  %43 = load i32, ptr %6, align 4, !tbaa !8
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %44) #6
  %46 = call noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %45)
  %.not9 = icmp eq i64 %46, 0
  br i1 %.not9, label %68, label %47

47:                                               ; preds = %42
  %48 = load i32, ptr %6, align 4, !tbaa !8
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %49) #6
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %50)
  %52 = load i32, ptr %51, align 4, !tbaa !8
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %52)
          to label %54 unwind label %56

54:                                               ; preds = %47
  %55 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %53, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %68 unwind label %56

56:                                               ; preds = %54, %47
  %57 = landingpad { ptr, i32 }
          cleanup
  br label %72

58:                                               ; preds = %31
  %59 = load i32, ptr %6, align 4, !tbaa !8
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %60) #6
  %62 = call noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %61)
  %.not = icmp eq i64 %62, 0
  br i1 %.not, label %68, label %63

63:                                               ; preds = %58
  %64 = load i32, ptr %6, align 4, !tbaa !8
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %65) #6
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %66)
  br label %68

67:                                               ; preds = %31
  invoke void @__cxa_rethrow() #7
          to label %74 unwind label %.loopexit.split-lp

68:                                               ; preds = %54, %42, %58, %63, %39
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  %69 = add nuw nsw i32 %.012, 1
  %70 = load i32, ptr %2, align 4, !tbaa !8
  %71 = icmp slt i32 %69, %70
  br i1 %71, label %.lr.ph, label %._crit_edge, !llvm.loop !11

72:                                               ; preds = %.loopexit, %.loopexit.split-lp, %56, %40
  %.pn = phi { ptr, i32 } [ %41, %40 ], [ %57, %56 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %73

73:                                               ; preds = %72, %26
  %.pn.pn = phi { ptr, i32 } [ %.pn, %72 ], [ %27, %26 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn.pn

74:                                               ; preds = %67
  unreachable
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) 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

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 nounwind uwtable
declare dso_local void @_ZNSaISt5stackIiSt5dequeIiSaIiEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nonnull align 8 dereferenceable(80) ptr @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIiSt5dequeIiSaIiEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) 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 #4 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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

declare void @__cxa_rethrow() local_unnamed_addr

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt5stackIiSt5dequeIiSaIiEEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt5stackIiSt5dequeIiSaIiEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 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 = { "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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = { 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 = { nounwind }
attributes #7 = { noreturn }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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