; LLVM IR from DionysiosB/CodeForces :: 0900-0999 (982A-Row)

; 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
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @llvm.lifetime.start.p0(i64 32, ptr %3) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  %11 = 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) %3)
          to label %12 unwind label %18

12:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #6
  store i8 1, ptr %6, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  store i64 1, ptr %7, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %43, %12
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  %16 = icmp ult i64 %14, %15
  br i1 %16, label %22, label %17

17:                                               ; preds = %13
  store i32 2, ptr %8, align 4
  br label %46

18:                                               ; preds = %0
  %19 = landingpad { ptr, i32 }
          cleanup
  %20 = extractvalue { ptr, i32 } %19, 0
  store ptr %20, ptr %4, align 8
  %21 = extractvalue { ptr, i32 } %19, 1
  store i32 %21, ptr %5, align 4
  br label %148

22:                                               ; preds = %13
  %23 = load i64, ptr %7, align 8, !tbaa !9
  %24 = sub nsw i64 %23, 1
  %25 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %24)
          to label %26 unwind label %38

26:                                               ; preds = %22
  %27 = load i8, ptr %25, align 1, !tbaa !11
  %28 = sext i8 %27 to i32
  %29 = icmp eq i32 %28, 49
  br i1 %29, label %30, label %42

30:                                               ; preds = %26
  %31 = load i64, ptr %7, align 8, !tbaa !9
  %32 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %31)
          to label %33 unwind label %38

33:                                               ; preds = %30
  %34 = load i8, ptr %32, align 1, !tbaa !11
  %35 = sext i8 %34 to i32
  %36 = icmp eq i32 %35, 49
  br i1 %36, label %37, label %42

37:                                               ; preds = %33
  store i8 0, ptr %6, align 1, !tbaa !5
  store i32 2, ptr %8, align 4
  br label %46

38:                                               ; preds = %30, %22
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %4, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %147

42:                                               ; preds = %33, %26
  br label %43

43:                                               ; preds = %42
  %44 = load i64, ptr %7, align 8, !tbaa !9
  %45 = add nsw i64 %44, 1
  store i64 %45, ptr %7, align 8, !tbaa !9
  br label %13, !llvm.loop !12

46:                                               ; preds = %37, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %47

47:                                               ; preds = %46
  %48 = load i64, ptr %2, align 8, !tbaa !9
  %49 = icmp eq i64 %48, 1
  br i1 %49, label %50, label %61

50:                                               ; preds = %47
  %51 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef 0)
          to label %52 unwind label %57

52:                                               ; preds = %50
  %53 = load i8, ptr %51, align 1, !tbaa !11
  %54 = sext i8 %53 to i32
  %55 = icmp eq i32 %54, 48
  br i1 %55, label %56, label %61

56:                                               ; preds = %52
  store i8 0, ptr %6, align 1, !tbaa !5
  br label %61

57:                                               ; preds = %143, %137, %90, %84, %72, %64, %50
  %58 = landingpad { ptr, i32 }
          cleanup
  %59 = extractvalue { ptr, i32 } %58, 0
  store ptr %59, ptr %4, align 8
  %60 = extractvalue { ptr, i32 } %58, 1
  store i32 %60, ptr %5, align 4
  br label %147

61:                                               ; preds = %56, %52, %47
  %62 = load i64, ptr %2, align 8, !tbaa !9
  %63 = icmp sge i64 %62, 2
  br i1 %63, label %64, label %81

64:                                               ; preds = %61
  %65 = load i64, ptr %2, align 8, !tbaa !9
  %66 = sub nsw i64 %65, 2
  %67 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %66)
          to label %68 unwind label %57

68:                                               ; preds = %64
  %69 = load i8, ptr %67, align 1, !tbaa !11
  %70 = sext i8 %69 to i32
  %71 = icmp eq i32 %70, 48
  br i1 %71, label %72, label %81

72:                                               ; preds = %68
  %73 = load i64, ptr %2, align 8, !tbaa !9
  %74 = sub nsw i64 %73, 1
  %75 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %74)
          to label %76 unwind label %57

76:                                               ; preds = %72
  %77 = load i8, ptr %75, align 1, !tbaa !11
  %78 = sext i8 %77 to i32
  %79 = icmp eq i32 %78, 48
  br i1 %79, label %80, label %81

80:                                               ; preds = %76
  store i8 0, ptr %6, align 1, !tbaa !5
  br label %81

81:                                               ; preds = %80, %76, %68, %61
  %82 = load i64, ptr %2, align 8, !tbaa !9
  %83 = icmp sge i64 %82, 2
  br i1 %83, label %84, label %97

84:                                               ; preds = %81
  %85 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef 0)
          to label %86 unwind label %57

86:                                               ; preds = %84
  %87 = load i8, ptr %85, align 1, !tbaa !11
  %88 = sext i8 %87 to i32
  %89 = icmp eq i32 %88, 48
  br i1 %89, label %90, label %97

90:                                               ; preds = %86
  %91 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef 1)
          to label %92 unwind label %57

92:                                               ; preds = %90
  %93 = load i8, ptr %91, align 1, !tbaa !11
  %94 = sext i8 %93 to i32
  %95 = icmp eq i32 %94, 48
  br i1 %95, label %96, label %97

96:                                               ; preds = %92
  store i8 0, ptr %6, align 1, !tbaa !5
  br label %97

97:                                               ; preds = %96, %92, %86, %81
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  store i64 1, ptr %9, align 8, !tbaa !9
  br label %98

98:                                               ; preds = %133, %97
  %99 = load i64, ptr %9, align 8, !tbaa !9
  %100 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  %101 = sub i64 %100, 1
  %102 = icmp ult i64 %99, %101
  br i1 %102, label %104, label %103

103:                                              ; preds = %98
  store i32 5, ptr %8, align 4
  br label %136

104:                                              ; preds = %98
  %105 = load i64, ptr %9, align 8, !tbaa !9
  %106 = sub nsw i64 %105, 1
  %107 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %106)
          to label %108 unwind label %128

108:                                              ; preds = %104
  %109 = load i8, ptr %107, align 1, !tbaa !11
  %110 = sext i8 %109 to i32
  %111 = icmp eq i32 %110, 48
  br i1 %111, label %112, label %132

112:                                              ; preds = %108
  %113 = load i64, ptr %9, align 8, !tbaa !9
  %114 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %113)
          to label %115 unwind label %128

115:                                              ; preds = %112
  %116 = load i8, ptr %114, align 1, !tbaa !11
  %117 = sext i8 %116 to i32
  %118 = icmp eq i32 %117, 48
  br i1 %118, label %119, label %132

119:                                              ; preds = %115
  %120 = load i64, ptr %9, align 8, !tbaa !9
  %121 = add nsw i64 %120, 1
  %122 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %121)
          to label %123 unwind label %128

123:                                              ; preds = %119
  %124 = load i8, ptr %122, align 1, !tbaa !11
  %125 = sext i8 %124 to i32
  %126 = icmp eq i32 %125, 48
  br i1 %126, label %127, label %132

127:                                              ; preds = %123
  store i8 0, ptr %6, align 1, !tbaa !5
  store i32 5, ptr %8, align 4
  br label %136

128:                                              ; preds = %119, %112, %104
  %129 = landingpad { ptr, i32 }
          cleanup
  %130 = extractvalue { ptr, i32 } %129, 0
  store ptr %130, ptr %4, align 8
  %131 = extractvalue { ptr, i32 } %129, 1
  store i32 %131, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %147

132:                                              ; preds = %123, %115, %108
  br label %133

133:                                              ; preds = %132
  %134 = load i64, ptr %9, align 8, !tbaa !9
  %135 = add nsw i64 %134, 1
  store i64 %135, ptr %9, align 8, !tbaa !9
  br label %98, !llvm.loop !14

136:                                              ; preds = %127, %103
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %137

137:                                              ; preds = %136
  %138 = load i8, ptr %6, align 1, !tbaa !5, !range !15, !noundef !16
  %139 = trunc i8 %138 to i1
  %140 = zext i1 %139 to i64
  %141 = select i1 %139, ptr @.str, ptr @.str.1
  %142 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef %141)
          to label %143 unwind label %57

143:                                              ; preds = %137
  %144 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %142, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %145 unwind label %57

145:                                              ; preds = %143
  store i32 0, ptr %1, align 4
  store i32 1, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %146 = load i32, ptr %1, align 4
  ret i32 %146

147:                                              ; preds = %128, %57, %38
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  br label %148

148:                                              ; preds = %147, %18
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %149

149:                                              ; preds = %148
  %150 = load ptr, ptr %4, align 8
  %151 = load i32, ptr %5, align 4
  %152 = insertvalue { ptr, i32 } poison, ptr %150, 0
  %153 = insertvalue { ptr, i32 } %152, i32 %151, 1
  resume { ptr, i32 } %153
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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)) #4

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 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) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

; 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)) #5

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #4 = { "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 }

!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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}
!15 = !{i8 0, i8 2}
!16 = !{}


; 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
@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i64, align 8
  %2 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %3 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %2) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %4 = 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 %.preheader unwind label %7

.preheader:                                       ; preds = %0
  %5 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %6 = icmp ugt i64 %5, 1
  br i1 %6, label %.lr.ph, label %._crit_edge

7:                                                ; preds = %0
  %8 = landingpad { ptr, i32 }
          cleanup
  br label %79

.lr.ph:                                           ; preds = %.preheader, %17
  %.01220 = phi i64 [ %18, %17 ], [ 1, %.preheader ]
  %9 = add nsw i64 %.01220, -1
  %10 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %9)
  %11 = load i8, ptr %10, align 1, !tbaa !5
  %12 = icmp eq i8 %11, 49
  br i1 %12, label %13, label %17

13:                                               ; preds = %.lr.ph
  %14 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %.01220)
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %16 = icmp eq i8 %15, 49
  br i1 %16, label %._crit_edge, label %17

17:                                               ; preds = %.lr.ph, %13
  %18 = add nuw nsw i64 %.01220, 1
  %19 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %20 = icmp ult i64 %18, %19
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !8

._crit_edge:                                      ; preds = %17, %13, %.preheader
  %.013 = phi i1 [ true, %.preheader ], [ false, %13 ], [ true, %17 ]
  %21 = load i64, ptr %1, align 8, !tbaa !10
  %22 = icmp eq i64 %21, 1
  br i1 %22, label %23, label %29

23:                                               ; preds = %._crit_edge
  %24 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef 0)
  %25 = load i8, ptr %24, align 1, !tbaa !5
  %26 = icmp ne i8 %25, 48
  %spec.select = and i1 %26, %.013
  %.pr = load i64, ptr %1, align 8, !tbaa !10
  br label %29

27:                                               ; preds = %76, %.loopexit
  %28 = landingpad { ptr, i32 }
          cleanup
  br label %79

29:                                               ; preds = %23, %._crit_edge
  %30 = phi i64 [ %.pr, %23 ], [ %21, %._crit_edge ]
  %.1 = phi i1 [ %spec.select, %23 ], [ %.013, %._crit_edge ]
  %31 = icmp sgt i64 %30, 1
  br i1 %31, label %32, label %.thread

32:                                               ; preds = %29
  %33 = add nsw i64 %30, -2
  %34 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %33)
  %35 = load i8, ptr %34, align 1, !tbaa !5
  %36 = icmp eq i8 %35, 48
  %.pre27 = load i64, ptr %1, align 8, !tbaa !10
  br i1 %36, label %37, label %42

37:                                               ; preds = %32
  %38 = add nsw i64 %.pre27, -1
  %39 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %38)
  %40 = load i8, ptr %39, align 1, !tbaa !5
  %41 = icmp ne i8 %40, 48
  %spec.select18 = select i1 %41, i1 %.1, i1 false
  %.pre = load i64, ptr %1, align 8, !tbaa !10
  br label %42

42:                                               ; preds = %37, %32
  %43 = phi i64 [ %.pre27, %32 ], [ %.pre, %37 ]
  %.2 = phi i1 [ %.1, %32 ], [ %spec.select18, %37 ]
  %44 = icmp sgt i64 %43, 1
  br i1 %44, label %45, label %.thread

45:                                               ; preds = %42
  %46 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef 0)
  %47 = load i8, ptr %46, align 1, !tbaa !5
  %48 = icmp eq i8 %47, 48
  br i1 %48, label %49, label %.thread

49:                                               ; preds = %45
  %50 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef 1)
  %51 = load i8, ptr %50, align 1, !tbaa !5
  %52 = icmp ne i8 %51, 48
  %spec.select19 = select i1 %52, i1 %.2, i1 false
  br label %.thread

.thread:                                          ; preds = %29, %49, %45, %42
  %.3 = phi i1 [ %.2, %45 ], [ %.2, %42 ], [ %spec.select19, %49 ], [ %.1, %29 ]
  %53 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %54 = add i64 %53, -3
  %55 = icmp ult i64 %54, -2
  br i1 %55, label %.lr.ph25, label %._crit_edge26

._crit_edge26:                                    ; preds = %70, %.thread
  %56 = select i1 %.3, ptr @.str, ptr @.str.1
  br label %.loopexit

.lr.ph25:                                         ; preds = %.thread, %70
  %.023 = phi i64 [ %71, %70 ], [ 1, %.thread ]
  %57 = add nsw i64 %.023, -1
  %58 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %57)
  %59 = load i8, ptr %58, align 1, !tbaa !5
  %60 = icmp eq i8 %59, 48
  br i1 %60, label %61, label %70

61:                                               ; preds = %.lr.ph25
  %62 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %.023)
  %63 = load i8, ptr %62, align 1, !tbaa !5
  %64 = icmp eq i8 %63, 48
  br i1 %64, label %65, label %70

65:                                               ; preds = %61
  %66 = add nuw nsw i64 %.023, 1
  %67 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %66)
  %68 = load i8, ptr %67, align 1, !tbaa !5
  %69 = icmp eq i8 %68, 48
  br i1 %69, label %.loopexit, label %70

70:                                               ; preds = %.lr.ph25, %61, %65
  %71 = add nuw nsw i64 %.023, 1
  %72 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %73 = add i64 %72, -1
  %74 = icmp ult i64 %71, %73
  br i1 %74, label %.lr.ph25, label %._crit_edge26, !llvm.loop !12

.loopexit:                                        ; preds = %65, %._crit_edge26
  %.4 = phi ptr [ %56, %._crit_edge26 ], [ @.str.1, %65 ]
  %75 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull %.4)
          to label %76 unwind label %27

76:                                               ; preds = %.loopexit
  %77 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %75, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %78 unwind label %27

78:                                               ; preds = %76
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  ret i32 0

79:                                               ; preds = %27, %7
  %.pn = phi { ptr, i32 } [ %28, %27 ], [ %8, %7 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 #4

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 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 #3 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #5

; 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)) #5

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #4 = { "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 }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!11, !11, i64 0}
!11 = !{!"long", !6, i64 0}
!12 = distinct !{!12, !9}


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