; LLVM IR from yanglr/leetcode-ac :: cpp-leetcode (leetcode819-most-common-word_hashmap_and_stringstream)

; 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_ostream" = type { ptr, %"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.Solution = type { i8 }
%"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] }
%"class.std::allocator" = type { i8 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::initializer_list" = type { ptr, i64 }
%"class.std::allocator.0" = type { i8 }

@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@_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.Solution, align 1
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca %"class.std::initializer_list", align 8
  %9 = alloca [1 x %"class.std::__cxx11::basic_string"], align 8
  %10 = alloca ptr, align 8
  %11 = alloca %"class.std::allocator", align 1
  %12 = alloca i1, align 1
  %13 = alloca %"class.std::allocator.0", align 1
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca %"class.std::__cxx11::basic_string", align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 1, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %3, ptr noundef @.str, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %16 unwind label %39

16:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #5
  store i1 true, ptr %12, align 1
  store ptr %9, ptr %10, align 8
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %9, ptr noundef @.str.1, ptr noundef nonnull align 1 dereferenceable(1) %11)
          to label %17 unwind label %43

17:                                               ; preds = %16
  store i1 false, ptr %12, align 1
  %18 = getelementptr inbounds %"class.std::initializer_list", ptr %8, i32 0, i32 0
  store ptr %9, ptr %18, align 8, !tbaa !5
  %19 = getelementptr inbounds %"class.std::initializer_list", ptr %8, i32 0, i32 1
  store i64 1, ptr %19, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 1, ptr %13) #5
  call void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #5
  %20 = getelementptr inbounds { ptr, i64 }, ptr %8, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8
  %22 = getelementptr inbounds { ptr, i64 }, ptr %8, i32 0, i32 1
  %23 = load i64, ptr %22, align 8
  invoke void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2ESt16initializer_listIS5_ERKS6_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr %21, i64 %23, ptr noundef nonnull align 1 dereferenceable(1) %13)
          to label %24 unwind label %47

24:                                               ; preds = %17
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #5
  %25 = getelementptr inbounds [1 x %"class.std::__cxx11::basic_string"], ptr %9, i32 0, i32 0
  %26 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %25, i64 1
  br label %27

27:                                               ; preds = %27, %24
  %28 = phi ptr [ %26, %24 ], [ %29, %27 ]
  %29 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %28, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %29) #5
  %30 = icmp eq ptr %29, %25
  br i1 %30, label %31, label %27

31:                                               ; preds = %27
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr %14) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %15, ptr noundef nonnull align 8 dereferenceable(32) %3)
          to label %32 unwind label %69

32:                                               ; preds = %31
  invoke void @_ZN8Solution14mostCommonWordENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERSt6vectorIS5_SaIS5_EE(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %14, ptr noundef nonnull align 1 dereferenceable(1) %2, ptr noundef %15, ptr noundef nonnull align 8 dereferenceable(24) %7)
          to label %33 unwind label %73

33:                                               ; preds = %32
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #5
  %34 = 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) %14)
          to label %35 unwind label %77

35:                                               ; preds = %33
  %36 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %34, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %37 unwind label %77

37:                                               ; preds = %35
  store i32 0, ptr %1, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %2) #5
  %38 = load i32, ptr %1, align 4
  ret i32 %38

39:                                               ; preds = %0
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %5, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %6, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #5
  br label %83

43:                                               ; preds = %16
  %44 = landingpad { ptr, i32 }
          cleanup
  %45 = extractvalue { ptr, i32 } %44, 0
  store ptr %45, ptr %5, align 8
  %46 = extractvalue { ptr, i32 } %44, 1
  store i32 %46, ptr %6, align 4
  br label %58

47:                                               ; preds = %17
  %48 = landingpad { ptr, i32 }
          cleanup
  %49 = extractvalue { ptr, i32 } %48, 0
  store ptr %49, ptr %5, align 8
  %50 = extractvalue { ptr, i32 } %48, 1
  store i32 %50, ptr %6, align 4
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #5
  %51 = getelementptr inbounds [1 x %"class.std::__cxx11::basic_string"], ptr %9, i32 0, i32 0
  %52 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %51, i64 1
  br label %53

53:                                               ; preds = %53, %47
  %54 = phi ptr [ %52, %47 ], [ %55, %53 ]
  %55 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %54, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %55) #5
  %56 = icmp eq ptr %55, %51
  br i1 %56, label %57, label %53

57:                                               ; preds = %53
  br label %58

58:                                               ; preds = %57, %43
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #5
  %59 = load i1, ptr %12, align 1
  br i1 %59, label %60, label %68

60:                                               ; preds = %58
  %61 = load ptr, ptr %10, align 8
  %62 = icmp eq ptr %9, %61
  br i1 %62, label %67, label %63

63:                                               ; preds = %63, %60
  %64 = phi ptr [ %61, %60 ], [ %65, %63 ]
  %65 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %64, i64 -1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %65) #5
  %66 = icmp eq ptr %65, %9
  br i1 %66, label %67, label %63

67:                                               ; preds = %63, %60
  br label %68

68:                                               ; preds = %67, %58
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #5
  br label %82

69:                                               ; preds = %31
  %70 = landingpad { ptr, i32 }
          cleanup
  %71 = extractvalue { ptr, i32 } %70, 0
  store ptr %71, ptr %5, align 8
  %72 = extractvalue { ptr, i32 } %70, 1
  store i32 %72, ptr %6, align 4
  br label %81

73:                                               ; preds = %32
  %74 = landingpad { ptr, i32 }
          cleanup
  %75 = extractvalue { ptr, i32 } %74, 0
  store ptr %75, ptr %5, align 8
  %76 = extractvalue { ptr, i32 } %74, 1
  store i32 %76, ptr %6, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #5
  br label %81

77:                                               ; preds = %35, %33
  %78 = landingpad { ptr, i32 }
          cleanup
  %79 = extractvalue { ptr, i32 } %78, 0
  store ptr %79, ptr %5, align 8
  %80 = extractvalue { ptr, i32 } %78, 1
  store i32 %80, ptr %6, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #5
  br label %81

81:                                               ; preds = %77, %73, %69
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #5
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  br label %82

82:                                               ; preds = %81, %68
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #5
  br label %83

83:                                               ; preds = %82, %39
  call void @llvm.lifetime.end.p0(i64 32, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %2) #5
  br label %84

84:                                               ; preds = %83
  %85 = load ptr, ptr %5, align 8
  %86 = load i32, ptr %6, align 4
  %87 = insertvalue { ptr, i32 } poison, ptr %85, 0
  %88 = insertvalue { ptr, i32 } %87, i32 %86, 1
  resume { ptr, i32 } %88
}

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 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: mustprogress nounwind uwtable
declare dso_local void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2ESt16initializer_listIS5_ERKS6_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; 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 uwtable
declare dso_local void @_ZN8Solution14mostCommonWordENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERSt6vectorIS5_SaIS5_EE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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)) #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3 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)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #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, !7, i64 0}
!6 = !{!"_ZTSSt16initializer_listINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}


; 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_ostream" = type { ptr, %"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.Solution = type { i8 }
%"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] }
%"class.std::allocator" = type { i8 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::__cxx11::basic_string<char>, std::allocator<std::__cxx11::basic_string<char>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator.0" = type { i8 }

@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@_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.Solution, align 1
  %2 = alloca %"class.std::__cxx11::basic_string", align 8
  %3 = alloca %"class.std::allocator", align 1
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca [1 x %"class.std::__cxx11::basic_string"], align 8
  %6 = alloca %"class.std::allocator", align 1
  %7 = alloca %"class.std::allocator.0", align 1
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %2, ptr noundef nonnull @.str, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %10 unwind label %19

10:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef nonnull @.str.1, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %11 unwind label %21

11:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %7) #5
  call void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  invoke void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2ESt16initializer_listIS5_ERKS6_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr nonnull %5, i64 1, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %12 unwind label %.loopexit.loopexit

12:                                               ; preds = %11
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %8) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %9, ptr noundef nonnull align 8 dereferenceable(32) %2)
          to label %13 unwind label %24

13:                                               ; preds = %12
  invoke void @_ZN8Solution14mostCommonWordENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERSt6vectorIS5_SaIS5_EE(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %8, ptr noundef nonnull align 1 dereferenceable(1) %1, ptr noundef nonnull %9, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %14 unwind label %26

14:                                               ; preds = %13
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  %15 = 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) %8)
          to label %16 unwind label %28

16:                                               ; preds = %14
  %17 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %15, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %18 unwind label %28

18:                                               ; preds = %16
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %8) #5
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %1) #5
  ret i32 0

19:                                               ; preds = %0
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %3) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #5
  br label %32

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

.loopexit.loopexit:                               ; preds = %11
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  br label %.loopexit

.loopexit:                                        ; preds = %.loopexit.loopexit, %21
  %.pn = phi { ptr, i32 } [ %22, %21 ], [ %23, %.loopexit.loopexit ]
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  br label %31

24:                                               ; preds = %12
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %30

26:                                               ; preds = %13
  %27 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  br label %30

28:                                               ; preds = %16, %14
  %29 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #5
  br label %30

30:                                               ; preds = %28, %26, %24
  %.pn12 = phi { ptr, i32 } [ %29, %28 ], [ %27, %26 ], [ %25, %24 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %8) #5
  call void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #5
  br label %31

31:                                               ; preds = %30, %.loopexit
  %.pn12.pn = phi { ptr, i32 } [ %.pn12, %30 ], [ %.pn, %.loopexit ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  br label %32

32:                                               ; preds = %31, %19
  %.pn12.pn.pn = phi { ptr, i32 } [ %.pn12.pn, %31 ], [ %20, %19 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %1) #5
  resume { ptr, i32 } %.pn12.pn.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 nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 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: mustprogress nounwind uwtable
declare dso_local void @_ZNSaINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EEC2ESt16initializer_listIS5_ERKS6_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; 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 uwtable
declare dso_local void @_ZN8Solution14mostCommonWordENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERSt6vectorIS5_SaIS5_EE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 #4

; 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 #3 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)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass