; LLVM IR from plskz/competitive-programming :: Junior Training Sheet/A (226)

; 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::__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] }

@_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 %"class.std::__cxx11::basic_string", align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i8, align 1
  %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)
  call void @llvm.lifetime.start.p0(i64 32, ptr %2) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %19 = invoke 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) %2)
          to label %20 unwind label %40

20:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  %21 = 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 %22 unwind label %44

22:                                               ; preds = %20
  %23 = load i32, ptr %5, align 4, !tbaa !8
  %24 = zext i32 %23 to i64
  %25 = call ptr @llvm.stacksave.p0()
  store ptr %25, ptr %6, align 8
  %26 = alloca %"class.std::__cxx11::basic_string", i64 %24, align 16
  store i64 %24, ptr %7, align 8
  %27 = icmp eq i64 %24, 0
  br i1 %27, label %34, label %28

28:                                               ; preds = %22
  %29 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %24
  br label %30

30:                                               ; preds = %30, %28
  %31 = phi ptr [ %26, %28 ], [ %32, %30 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %31) #6
  %32 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %31, i64 1
  %33 = icmp eq ptr %32, %29
  br i1 %33, label %34, label %30

34:                                               ; preds = %30, %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  store i32 0, ptr %8, align 4, !tbaa !8
  br label %35

35:                                               ; preds = %54, %34
  %36 = load i32, ptr %8, align 4, !tbaa !8
  %37 = load i32, ptr %5, align 4, !tbaa !8
  %38 = icmp slt i32 %36, %37
  br i1 %38, label %48, label %39

39:                                               ; preds = %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %61

40:                                               ; preds = %0
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %3, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %4, align 4
  br label %153

44:                                               ; preds = %20
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %3, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %4, align 4
  br label %152

48:                                               ; preds = %35
  %49 = load i32, ptr %8, align 4, !tbaa !8
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %50
  %52 = invoke 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) %51)
          to label %53 unwind label %57

53:                                               ; preds = %48
  br label %54

54:                                               ; preds = %53
  %55 = load i32, ptr %8, align 4, !tbaa !8
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %8, align 4, !tbaa !8
  br label %35, !llvm.loop !11

57:                                               ; preds = %48
  %58 = landingpad { ptr, i32 }
          cleanup
  %59 = extractvalue { ptr, i32 } %58, 0
  store ptr %59, ptr %3, align 8
  %60 = extractvalue { ptr, i32 } %58, 1
  store i32 %60, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %144

61:                                               ; preds = %39
  %62 = load i32, ptr %5, align 4, !tbaa !8
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %63
  invoke void @_ZSt4sortIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvT_S7_(ptr noundef %26, ptr noundef %64)
          to label %65 unwind label %71

65:                                               ; preds = %61
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !8
  br label %66

66:                                               ; preds = %125, %65
  %67 = load i32, ptr %9, align 4, !tbaa !8
  %68 = load i32, ptr %5, align 4, !tbaa !8
  %69 = icmp slt i32 %67, %68
  br i1 %69, label %75, label %70

70:                                               ; preds = %66
  store i32 5, ptr %10, align 4
  br label %129

71:                                               ; preds = %131, %61
  %72 = landingpad { ptr, i32 }
          cleanup
  %73 = extractvalue { ptr, i32 } %72, 0
  store ptr %73, ptr %3, align 8
  %74 = extractvalue { ptr, i32 } %72, 1
  store i32 %74, ptr %4, align 4
  br label %144

75:                                               ; preds = %66
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #6
  store i8 1, ptr %11, align 1, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #6
  store i32 0, ptr %12, align 4, !tbaa !8
  br label %76

76:                                               ; preds = %105, %75
  %77 = load i32, ptr %12, align 4, !tbaa !8
  %78 = sext i32 %77 to i64
  %79 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %80 = icmp ult i64 %78, %79
  br i1 %80, label %82, label %81

81:                                               ; preds = %76
  store i32 8, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %108

82:                                               ; preds = %76
  %83 = load i32, ptr %9, align 4, !tbaa !8
  %84 = sext i32 %83 to i64
  %85 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %84
  %86 = load i32, ptr %12, align 4, !tbaa !8
  %87 = sext i32 %86 to i64
  %88 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %85, i64 noundef %87)
          to label %89 unwind label %100

89:                                               ; preds = %82
  %90 = load i8, ptr %88, align 1, !tbaa !15
  %91 = sext i8 %90 to i32
  %92 = load i32, ptr %12, align 4, !tbaa !8
  %93 = sext i32 %92 to i64
  %94 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %93)
          to label %95 unwind label %100

95:                                               ; preds = %89
  %96 = load i8, ptr %94, align 1, !tbaa !15
  %97 = sext i8 %96 to i32
  %98 = icmp ne i32 %91, %97
  br i1 %98, label %99, label %104

99:                                               ; preds = %95
  store i8 0, ptr %11, align 1, !tbaa !13
  br label %104

100:                                              ; preds = %89, %82
  %101 = landingpad { ptr, i32 }
          cleanup
  %102 = extractvalue { ptr, i32 } %101, 0
  store ptr %102, ptr %3, align 8
  %103 = extractvalue { ptr, i32 } %101, 1
  store i32 %103, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #6
  br label %128

104:                                              ; preds = %99, %95
  br label %105

105:                                              ; preds = %104
  %106 = load i32, ptr %12, align 4, !tbaa !8
  %107 = add nsw i32 %106, 1
  store i32 %107, ptr %12, align 4, !tbaa !8
  br label %76, !llvm.loop !16

108:                                              ; preds = %81
  %109 = load i8, ptr %11, align 1, !tbaa !13, !range !17, !noundef !18
  %110 = trunc i8 %109 to i1
  br i1 %110, label %111, label %121

111:                                              ; preds = %108
  %112 = load i32, ptr %9, align 4, !tbaa !8
  %113 = sext i32 %112 to i64
  %114 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %113
  %115 = invoke 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) %114)
          to label %116 unwind label %117

116:                                              ; preds = %111
  store i32 0, ptr %1, align 4
  store i32 1, ptr %10, align 4
  br label %122

117:                                              ; preds = %111
  %118 = landingpad { ptr, i32 }
          cleanup
  %119 = extractvalue { ptr, i32 } %118, 0
  store ptr %119, ptr %3, align 8
  %120 = extractvalue { ptr, i32 } %118, 1
  store i32 %120, ptr %4, align 4
  br label %128

121:                                              ; preds = %108
  store i32 0, ptr %10, align 4
  br label %122

122:                                              ; preds = %121, %116
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #6
  %123 = load i32, ptr %10, align 4
  switch i32 %123, label %129 [
    i32 0, label %124
  ]

124:                                              ; preds = %122
  br label %125

125:                                              ; preds = %124
  %126 = load i32, ptr %9, align 4, !tbaa !8
  %127 = add nsw i32 %126, 1
  store i32 %127, ptr %9, align 4, !tbaa !8
  br label %66, !llvm.loop !19

128:                                              ; preds = %117, %100
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %144

129:                                              ; preds = %122, %70
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  %130 = load i32, ptr %10, align 4
  switch i32 %130, label %134 [
    i32 5, label %131
  ]

131:                                              ; preds = %129
  %132 = invoke 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) %2)
          to label %133 unwind label %71

133:                                              ; preds = %131
  store i32 0, ptr %1, align 4
  store i32 1, ptr %10, align 4
  br label %134

134:                                              ; preds = %133, %129
  %135 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %24
  %136 = icmp eq ptr %26, %135
  br i1 %136, label %141, label %137

137:                                              ; preds = %137, %134
  %138 = phi ptr [ %135, %134 ], [ %139, %137 ]
  %139 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %138, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %139) #6
  %140 = icmp eq ptr %139, %26
  br i1 %140, label %141, label %137

141:                                              ; preds = %137, %134
  %142 = load ptr, ptr %6, align 8
  call void @llvm.stackrestore.p0(ptr %142)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %2) #6
  %143 = load i32, ptr %1, align 4
  ret i32 %143

144:                                              ; preds = %128, %71, %57
  %145 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %26, i64 %24
  %146 = icmp eq ptr %26, %145
  br i1 %146, label %151, label %147

147:                                              ; preds = %147, %144
  %148 = phi ptr [ %145, %144 ], [ %149, %147 ]
  %149 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %148, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %149) #6
  %150 = icmp eq ptr %149, %26
  br i1 %150, label %151, label %147

151:                                              ; preds = %147, %144
  br label %152

152:                                              ; preds = %151, %44
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %153

153:                                              ; preds = %152, %40
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %2) #6
  br label %154

154:                                              ; preds = %153
  %155 = load ptr, ptr %3, align 8
  %156 = load i32, ptr %4, align 4
  %157 = insertvalue { ptr, i32 } poison, ptr %155, 0
  %158 = insertvalue { ptr, i32 } %157, i32 %156, 1
  resume { ptr, i32 } %158
}

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

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

declare i32 @__gxx_personality_v0(...)

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
declare ptr @llvm.stacksave.p0() #4

; 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 uwtable
declare dso_local void @_ZSt4sortIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvT_S7_(ptr noundef, ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nosync nounwind willreturn }
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 }

!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"}
!13 = !{!14, !14, i64 0}
!14 = !{!"bool", !10, i64 0}
!15 = !{!10, !10, i64 0}
!16 = distinct !{!16, !12}
!17 = !{i8 0, i8 2}
!18 = !{}
!19 = distinct !{!19, !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::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::__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] }

@_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 %"class.std::__cxx11::basic_string", align 8
  %2 = alloca i32, align 4
  %3 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %4 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %5 = getelementptr i8, ptr %4, i64 -24
  %6 = load i64, ptr %5, align 8
  %7 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %6
  %8 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %7, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %1) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  %9 = invoke 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) %1)
          to label %10 unwind label %28

10:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %11 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %12 unwind label %30

12:                                               ; preds = %10
  %13 = load i32, ptr %2, align 4, !tbaa !8
  %14 = zext i32 %13 to i64
  %15 = call ptr @llvm.stacksave.p0()
  %16 = alloca %"class.std::__cxx11::basic_string", i64 %14, align 16
  %17 = icmp eq i32 %13, 0
  br i1 %17, label %.loopexit46, label %18

18:                                               ; preds = %12
  %19 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %14
  br label %20

20:                                               ; preds = %20, %18
  %21 = phi ptr [ %16, %18 ], [ %22, %20 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %21) #6
  %22 = getelementptr inbounds i8, ptr %21, i64 32
  %23 = icmp eq ptr %22, %19
  br i1 %23, label %.loopexit46, label %20

.loopexit46:                                      ; preds = %20, %12
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = icmp sgt i32 %24, 0
  br i1 %25, label %.lr.ph, label %.loopexit46.._crit_edge_crit_edge

.loopexit46.._crit_edge_crit_edge:                ; preds = %.loopexit46
  %.pre = sext i32 %24 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %34, %.loopexit46.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.loopexit46.._crit_edge_crit_edge ], [ %36, %34 ]
  %26 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %.pre-phi
  invoke void @_ZSt4sortIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvT_S7_(ptr noundef nonnull %16, ptr noundef nonnull %26)
          to label %.preheader45 unwind label %42

.preheader45:                                     ; preds = %._crit_edge
  %27 = load i32, ptr %2, align 4, !tbaa !8
  %.not55 = icmp sgt i32 %27, 0
  br i1 %.not55, label %.preheader44, label %.critedge41

28:                                               ; preds = %0
  %29 = landingpad { ptr, i32 }
          cleanup
  br label %69

30:                                               ; preds = %10
  %31 = landingpad { ptr, i32 }
          cleanup
  br label %.loopexit

.lr.ph:                                           ; preds = %.loopexit46, %34
  %indvars.iv = phi i64 [ %indvars.iv.next, %34 ], [ 0, %.loopexit46 ]
  %32 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %indvars.iv
  %33 = invoke 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) %32)
          to label %34 unwind label %38

34:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %35 = load i32, ptr %2, align 4, !tbaa !8
  %36 = sext i32 %35 to i64
  %37 = icmp slt i64 %indvars.iv.next, %36
  br i1 %37, label %.lr.ph, label %._crit_edge, !llvm.loop !11

38:                                               ; preds = %.lr.ph
  %39 = landingpad { ptr, i32 }
          cleanup
  br label %64

.preheader44:                                     ; preds = %.preheader45, %.critedge
  %indvars.iv64 = phi i64 [ %indvars.iv.next65, %.critedge ], [ 0, %.preheader45 ]
  %40 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  %.not58 = icmp eq i64 %40, 0
  br i1 %.not58, label %.critedge57, label %.lr.ph52

.lr.ph52:                                         ; preds = %.preheader44
  %41 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %indvars.iv64
  br label %44

42:                                               ; preds = %.critedge41, %._crit_edge
  %43 = landingpad { ptr, i32 }
          cleanup
  br label %64

._crit_edge53:                                    ; preds = %44
  br i1 %spec.select, label %.critedge57, label %.critedge

44:                                               ; preds = %.lr.ph52, %44
  %indvars.iv62 = phi i64 [ 0, %.lr.ph52 ], [ %indvars.iv.next63, %44 ]
  %.01850 = phi i1 [ true, %.lr.ph52 ], [ %spec.select, %44 ]
  %45 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %41, i64 noundef %indvars.iv62)
  %46 = load i8, ptr %45, align 1, !tbaa !13
  %47 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv62)
  %48 = load i8, ptr %47, align 1, !tbaa !13
  %.not36 = icmp eq i8 %46, %48
  %spec.select = select i1 %.not36, i1 %.01850, i1 false
  %indvars.iv.next63 = add nuw nsw i64 %indvars.iv62, 1
  %49 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  %50 = icmp ugt i64 %49, %indvars.iv.next63
  br i1 %50, label %44, label %._crit_edge53, !llvm.loop !14

.critedge57:                                      ; preds = %.preheader44, %._crit_edge53
  %51 = and i64 %indvars.iv64, 4294967295
  %52 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %51
  %53 = invoke 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) %52)
          to label %59 unwind label %54

54:                                               ; preds = %.critedge57
  %55 = landingpad { ptr, i32 }
          cleanup
  br label %64

.critedge:                                        ; preds = %._crit_edge53
  %indvars.iv.next65 = add nuw nsw i64 %indvars.iv64, 1
  %56 = load i32, ptr %2, align 4, !tbaa !8
  %57 = sext i32 %56 to i64
  %.not = icmp slt i64 %indvars.iv.next65, %57
  br i1 %.not, label %.preheader44, label %.critedge41, !llvm.loop !15

.critedge41:                                      ; preds = %.critedge, %.preheader45
  %58 = invoke 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) %1)
          to label %59 unwind label %42

59:                                               ; preds = %.critedge57, %.critedge41
  br i1 %17, label %.loopexit43, label %.preheader42.preheader

.preheader42.preheader:                           ; preds = %59
  %60 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %14
  br label %.preheader42

.preheader42:                                     ; preds = %.preheader42.preheader, %.preheader42
  %61 = phi ptr [ %62, %.preheader42 ], [ %60, %.preheader42.preheader ]
  %62 = getelementptr inbounds i8, ptr %61, i64 -32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %62) #6
  %63 = icmp eq ptr %62, %16
  br i1 %63, label %.loopexit43, label %.preheader42

.loopexit43:                                      ; preds = %.preheader42, %59
  call void @llvm.stackrestore.p0(ptr %15)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #6
  ret i32 0

64:                                               ; preds = %54, %42, %38
  %.pn = phi { ptr, i32 } [ %39, %38 ], [ %43, %42 ], [ %55, %54 ]
  br i1 %17, label %.loopexit, label %.preheader.preheader

.preheader.preheader:                             ; preds = %64
  %65 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %16, i64 %14
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %.preheader
  %66 = phi ptr [ %67, %.preheader ], [ %65, %.preheader.preheader ]
  %67 = getelementptr inbounds i8, ptr %66, i64 -32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %67) #6
  %68 = icmp eq ptr %67, %16
  br i1 %68, label %.loopexit, label %.preheader

.loopexit:                                        ; preds = %.preheader, %64, %30
  %.pn.pn = phi { ptr, i32 } [ %.pn, %64 ], [ %31, %30 ], [ %.pn, %.preheader ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  br label %69

69:                                               ; preds = %.loopexit, %28
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %.loopexit ], [ %29, %28 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn.pn.pn
}

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

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

declare i32 @__gxx_personality_v0(...)

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 nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #4

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvT_S7_(ptr noundef, ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; 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 #5

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { mustprogress nocallback nofree nosync nounwind willreturn }
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 }

!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"}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !12}
!15 = distinct !{!15, !12}


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