; LLVM IR from DionysiosB/CodeForces :: 1750B-MaximumSubstring (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::__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
@.str = external hidden unnamed_addr constant [6 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 i64, align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  %13 = alloca i64, align 8
  %14 = alloca i32, align 4
  %15 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %16 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %17 = 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)
  br label %18

18:                                               ; preds = %115, %0
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = add nsw i64 %19, -1
  store i64 %20, ptr %2, align 8, !tbaa !5
  %21 = icmp ne i64 %19, 0
  br i1 %21, label %22, label %122

22:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERl(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %3)
  call void @llvm.lifetime.start.p0(i64 32, ptr %4) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  %24 = 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) %4)
          to label %25 unwind label %31

25:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  store i64 0, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  store i64 0, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  store i64 0, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  store i64 0, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #5
  store i64 0, ptr %11, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  store i64 0, ptr %12, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  store i64 0, ptr %13, align 8, !tbaa !9
  br label %26

26:                                               ; preds = %80, %25
  %27 = load i64, ptr %13, align 8, !tbaa !9
  %28 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  %29 = icmp ult i64 %27, %28
  br i1 %29, label %35, label %30

30:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %83

31:                                               ; preds = %22
  %32 = landingpad { ptr, i32 }
          cleanup
  %33 = extractvalue { ptr, i32 } %32, 0
  store ptr %33, ptr %5, align 8
  %34 = extractvalue { ptr, i32 } %32, 1
  store i32 %34, ptr %6, align 4
  br label %121

35:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  %36 = load i64, ptr %13, align 8, !tbaa !9
  %37 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %36)
          to label %38 unwind label %58

38:                                               ; preds = %35
  %39 = load i8, ptr %37, align 1, !tbaa !11
  %40 = sext i8 %39 to i32
  %41 = sub nsw i32 %40, 48
  store i32 %41, ptr %14, align 4, !tbaa !12
  %42 = load i32, ptr %14, align 4, !tbaa !12
  %43 = icmp eq i32 %42, 0
  br i1 %43, label %44, label %62

44:                                               ; preds = %38
  store i64 0, ptr %11, align 8, !tbaa !9
  %45 = load i64, ptr %8, align 8, !tbaa !9
  %46 = add nsw i64 %45, 1
  store i64 %46, ptr %8, align 8, !tbaa !9
  %47 = load i64, ptr %12, align 8, !tbaa !9
  %48 = add nsw i64 %47, 1
  store i64 %48, ptr %12, align 8, !tbaa !9
  %49 = load i64, ptr %10, align 8, !tbaa !9
  %50 = load i64, ptr %12, align 8, !tbaa !9
  %51 = icmp sgt i64 %49, %50
  br i1 %51, label %52, label %54

52:                                               ; preds = %44
  %53 = load i64, ptr %10, align 8, !tbaa !9
  br label %56

54:                                               ; preds = %44
  %55 = load i64, ptr %12, align 8, !tbaa !9
  br label %56

56:                                               ; preds = %54, %52
  %57 = phi i64 [ %53, %52 ], [ %55, %54 ]
  store i64 %57, ptr %10, align 8, !tbaa !9
  br label %62

58:                                               ; preds = %35
  %59 = landingpad { ptr, i32 }
          cleanup
  %60 = extractvalue { ptr, i32 } %59, 0
  store ptr %60, ptr %5, align 8
  %61 = extractvalue { ptr, i32 } %59, 1
  store i32 %61, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %120

62:                                               ; preds = %56, %38
  %63 = load i32, ptr %14, align 4, !tbaa !12
  %64 = icmp eq i32 %63, 1
  br i1 %64, label %65, label %79

65:                                               ; preds = %62
  store i64 0, ptr %12, align 8, !tbaa !9
  %66 = load i64, ptr %7, align 8, !tbaa !9
  %67 = add nsw i64 %66, 1
  store i64 %67, ptr %7, align 8, !tbaa !9
  %68 = load i64, ptr %11, align 8, !tbaa !9
  %69 = add nsw i64 %68, 1
  store i64 %69, ptr %11, align 8, !tbaa !9
  %70 = load i64, ptr %9, align 8, !tbaa !9
  %71 = load i64, ptr %11, align 8, !tbaa !9
  %72 = icmp sgt i64 %70, %71
  br i1 %72, label %73, label %75

73:                                               ; preds = %65
  %74 = load i64, ptr %9, align 8, !tbaa !9
  br label %77

75:                                               ; preds = %65
  %76 = load i64, ptr %11, align 8, !tbaa !9
  br label %77

77:                                               ; preds = %75, %73
  %78 = phi i64 [ %74, %73 ], [ %76, %75 ]
  store i64 %78, ptr %9, align 8, !tbaa !9
  br label %79

79:                                               ; preds = %77, %62
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %80

80:                                               ; preds = %79
  %81 = load i64, ptr %13, align 8, !tbaa !9
  %82 = add nsw i64 %81, 1
  store i64 %82, ptr %13, align 8, !tbaa !9
  br label %26, !llvm.loop !14

83:                                               ; preds = %30
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #5
  %84 = load i64, ptr %10, align 8, !tbaa !9
  %85 = load i64, ptr %10, align 8, !tbaa !9
  %86 = mul nsw i64 %84, %85
  store i64 %86, ptr %15, align 8, !tbaa !9
  %87 = load i64, ptr %15, align 8, !tbaa !9
  %88 = load i64, ptr %9, align 8, !tbaa !9
  %89 = load i64, ptr %9, align 8, !tbaa !9
  %90 = mul nsw i64 %88, %89
  %91 = icmp sgt i64 %87, %90
  br i1 %91, label %92, label %94

92:                                               ; preds = %83
  %93 = load i64, ptr %15, align 8, !tbaa !9
  br label %98

94:                                               ; preds = %83
  %95 = load i64, ptr %9, align 8, !tbaa !9
  %96 = load i64, ptr %9, align 8, !tbaa !9
  %97 = mul nsw i64 %95, %96
  br label %98

98:                                               ; preds = %94, %92
  %99 = phi i64 [ %93, %92 ], [ %97, %94 ]
  store i64 %99, ptr %15, align 8, !tbaa !9
  %100 = load i64, ptr %15, align 8, !tbaa !9
  %101 = load i64, ptr %8, align 8, !tbaa !9
  %102 = load i64, ptr %7, align 8, !tbaa !9
  %103 = mul nsw i64 %101, %102
  %104 = icmp sgt i64 %100, %103
  br i1 %104, label %105, label %107

105:                                              ; preds = %98
  %106 = load i64, ptr %15, align 8, !tbaa !9
  br label %111

107:                                              ; preds = %98
  %108 = load i64, ptr %8, align 8, !tbaa !9
  %109 = load i64, ptr %7, align 8, !tbaa !9
  %110 = mul nsw i64 %108, %109
  br label %111

111:                                              ; preds = %107, %105
  %112 = phi i64 [ %106, %105 ], [ %110, %107 ]
  store i64 %112, ptr %15, align 8, !tbaa !9
  %113 = load i64, ptr %15, align 8, !tbaa !9
  %114 = invoke i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %113)
          to label %115 unwind label %116

115:                                              ; preds = %111
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  br label %18, !llvm.loop !16

116:                                              ; preds = %111
  %117 = landingpad { ptr, i32 }
          cleanup
  %118 = extractvalue { ptr, i32 } %117, 0
  store ptr %118, ptr %5, align 8
  %119 = extractvalue { ptr, i32 } %117, 1
  store i32 %119, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #5
  br label %120

120:                                              ; preds = %116, %58
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  br label %121

121:                                              ; preds = %120, %31
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  br label %124

122:                                              ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  %123 = load i32, ptr %1, align 4
  ret i32 %123

124:                                              ; preds = %121
  %125 = load ptr, ptr %5, align 8
  %126 = load i32, ptr %6, align 4
  %127 = insertvalue { ptr, i32 } poison, ptr %125, 0
  %128 = insertvalue { ptr, i32 } %127, i32 %126, 1
  resume { ptr, i32 } %128
}

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; 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)) #3 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #4 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) #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}


; 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::__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
@.str = external hidden unnamed_addr constant [6 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 i64, align 8
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #7
  %5 = 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)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not66 = icmp eq i64 %6, 0
  br i1 %.not66, label %._crit_edge69, label %.lr.ph68

.lr.ph68:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  %8 = 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 nonnull %3) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  %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) %3)
          to label %.preheader unwind label %19

.preheader:                                       ; preds = %.lr.ph68
  %10 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  %.not70 = icmp eq i64 %10, 0
  br i1 %.not70, label %._crit_edge, label %.lr.ph

._crit_edge.loopexit:                             ; preds = %30
  %11 = mul nsw i64 %.1, %.14554
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader
  %.042.lcssa = phi i64 [ 0, %.preheader ], [ %.143, %._crit_edge.loopexit ]
  %.040.lcssa = phi i64 [ 0, %.preheader ], [ %.14155, %._crit_edge.loopexit ]
  %12 = phi i64 [ 0, %.preheader ], [ %11, %._crit_edge.loopexit ]
  %13 = mul nsw i64 %.040.lcssa, %.040.lcssa
  %14 = mul nsw i64 %.042.lcssa, %.042.lcssa
  %. = call i64 @llvm.umax.i64(i64 %13, i64 %14)
  %15 = call i64 @llvm.smax.i64(i64 %., i64 %12)
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %15)
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  %17 = load i64, ptr %1, align 8, !tbaa !5
  %18 = add nsw i64 %17, -1
  store i64 %18, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %17, 0
  br i1 %.not, label %._crit_edge69, label %.lr.ph68, !llvm.loop !9

19:                                               ; preds = %.lr.ph68
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  resume { ptr, i32 } %20

.lr.ph:                                           ; preds = %.preheader, %30
  %.062 = phi i64 [ %.1, %30 ], [ 0, %.preheader ]
  %.03461 = phi i64 [ %31, %30 ], [ 0, %.preheader ]
  %.03560 = phi i64 [ %.2, %30 ], [ 0, %.preheader ]
  %.03759 = phi i64 [ %.239, %30 ], [ 0, %.preheader ]
  %.04058 = phi i64 [ %.14155, %30 ], [ 0, %.preheader ]
  %.04257 = phi i64 [ %.143, %30 ], [ 0, %.preheader ]
  %.04456 = phi i64 [ %.14554, %30 ], [ 0, %.preheader ]
  %21 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %.03461)
  %22 = load i8, ptr %21, align 1, !tbaa !11
  switch i8 %22, label %30 [
    i8 48, label %.thread
    i8 49, label %26
  ]

.thread:                                          ; preds = %.lr.ph
  %23 = add nsw i64 %.04456, 1
  %24 = add nsw i64 %.03560, 1
  %25 = call i64 @llvm.smax.i64(i64 %.04058, i64 %24)
  br label %30

26:                                               ; preds = %.lr.ph
  %27 = add nsw i64 %.062, 1
  %28 = add nsw i64 %.03759, 1
  %29 = call i64 @llvm.smax.i64(i64 %.04257, i64 %28)
  br label %30

30:                                               ; preds = %.lr.ph, %.thread, %26
  %.14155 = phi i64 [ %.04058, %26 ], [ %25, %.thread ], [ %.04058, %.lr.ph ]
  %.14554 = phi i64 [ %.04456, %26 ], [ %23, %.thread ], [ %.04456, %.lr.ph ]
  %.143 = phi i64 [ %29, %26 ], [ %.04257, %.thread ], [ %.04257, %.lr.ph ]
  %.239 = phi i64 [ %28, %26 ], [ 0, %.thread ], [ %.03759, %.lr.ph ]
  %.2 = phi i64 [ 0, %26 ], [ %24, %.thread ], [ %.03560, %.lr.ph ]
  %.1 = phi i64 [ %27, %26 ], [ %.062, %.thread ], [ %.062, %.lr.ph ]
  %31 = add nuw nsw i64 %.03461, 1
  %32 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %3) #7
  %33 = icmp ult i64 %31, %32
  br i1 %33, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !12

._crit_edge69:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  ret i32 0
}

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; 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 #3 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4 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 #4 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smax.i64(i64, i64) #6

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #6

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nofree nounwind "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #7 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass