; LLVM IR from sp-nitech/SPTK :: src/compression (huffman_encoding)

; 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::__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::vector" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair.9" = type { i32, %"class.std::vector" }
%"struct.std::pair" = type <{ %"struct.std::__detail::_Node_iterator", i8, [7 x i8] }>
%"struct.std::__detail::_Node_iterator" = type { %"struct.std::__detail::_Node_iterator_base" }
%"struct.std::__detail::_Node_iterator_base" = type { ptr }
%"class.sptk::HuffmanEncoding" = type <{ ptr, %"class.std::unordered_map", i8, [7 x i8] }>
%"class.std::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }

@_ZTVN4sptk15HuffmanEncodingE = external dso_local unnamed_addr constant { [4 x ptr] }, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4sptk15HuffmanEncodingC2EPSt14basic_ifstreamIcSt11char_traitsIcEE(ptr noundef nonnull align 8 dereferenceable(65) %0, ptr noundef %1) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::vector", align 8
  %10 = alloca ptr, align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = alloca ptr, align 8
  %14 = alloca %"struct.std::pair.9", align 8
  %15 = alloca %"struct.std::pair", align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %16 = load ptr, ptr %3, align 8
  store ptr getelementptr inbounds inrange(-16, 16) ({ [4 x ptr] }, ptr @_ZTVN4sptk15HuffmanEncodingE, i32 0, i32 0, i32 2), ptr %16, align 8, !tbaa !9
  %17 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 1
  call void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %17) #5
  %18 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 2
  store i8 1, ptr %18, align 8, !tbaa !11
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = icmp eq ptr null, %19
  br i1 %20, label %21, label %23

21:                                               ; preds = %2
  %22 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 2
  store i8 0, ptr %22, align 8, !tbaa !11
  br label %90

23:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  br label %24

24:                                               ; preds = %69, %23
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %25, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %27 unwind label %46

27:                                               ; preds = %24
  %28 = 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) %26, ptr noundef nonnull align 8 dereferenceable(32) %6)
          to label %29 unwind label %46

29:                                               ; preds = %27
  %30 = load ptr, ptr %28, align 8, !tbaa !9
  %31 = getelementptr i8, ptr %30, i64 -24
  %32 = load i64, ptr %31, align 8
  %33 = getelementptr inbounds i8, ptr %28, i64 %32
  %34 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %33)
          to label %35 unwind label %46

35:                                               ; preds = %29
  br i1 %34, label %36, label %84

36:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 40, ptr %9) #5
  call void @_ZNSt6vectorIbSaIbEEC2Ev(ptr noundef nonnull align 8 dereferenceable(40) %9) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  store ptr %6, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #5
  %37 = load ptr, ptr %10, align 8, !tbaa !5
  %38 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %37) #5
  %39 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %38, ptr %39, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  %40 = load ptr, ptr %10, align 8, !tbaa !5
  %41 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %40) #5
  %42 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  store ptr %41, ptr %42, align 8
  br label %43

43:                                               ; preds = %59, %36
  %44 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(8) %12) #5
  br i1 %44, label %50, label %45

45:                                               ; preds = %43
  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
  br label %65

46:                                               ; preds = %29, %27, %24
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %7, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %8, align 4
  br label %89

50:                                               ; preds = %43
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  %51 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #5
  store ptr %51, ptr %13, align 8, !tbaa !5
  %52 = load ptr, ptr %13, align 8, !tbaa !5
  %53 = load i8, ptr %52, align 1, !tbaa !20
  %54 = sext i8 %53 to i32
  %55 = icmp eq i32 49, %54
  %56 = zext i1 %55 to i64
  %57 = select i1 %55, i1 true, i1 false
  invoke void @_ZNSt6vectorIbSaIbEE9push_backEb(ptr noundef nonnull align 8 dereferenceable(40) %9, i1 noundef zeroext %57)
          to label %58 unwind label %61

58:                                               ; preds = %50
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  br label %59

59:                                               ; preds = %58
  %60 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #5
  br label %43

61:                                               ; preds = %50
  %62 = landingpad { ptr, i32 }
          cleanup
  %63 = extractvalue { ptr, i32 } %62, 0
  store ptr %63, ptr %7, align 8
  %64 = extractvalue { ptr, i32 } %62, 1
  store i32 %64, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #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
  br label %83

65:                                               ; preds = %45
  %66 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 1
  call void @llvm.lifetime.start.p0(i64 48, ptr %14) #5
  invoke void @_ZSt9make_pairIRiRSt6vectorIbSaIbEEESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS6_INS7_IT0_E4typeEE6__typeEEOS8_OSD_(ptr dead_on_unwind writable sret(%"struct.std::pair.9") align 8 %14, ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 8 dereferenceable(40) %9)
          to label %67 unwind label %74

67:                                               ; preds = %65
  %68 = invoke { ptr, i8 } @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE6insertIS7_IiS2_EEENSt9enable_ifIXsr16is_constructibleIS9_OT_EE5valueES7_INSt8__detail14_Node_iteratorIS9_Lb0ELb0EEEbEE4typeESG_(ptr noundef nonnull align 8 dereferenceable(56) %66, ptr noundef nonnull align 8 dereferenceable(48) %14)
          to label %69 unwind label %78

69:                                               ; preds = %67
  %70 = getelementptr inbounds { ptr, i8 }, ptr %15, i32 0, i32 0
  %71 = extractvalue { ptr, i8 } %68, 0
  store ptr %71, ptr %70, align 8
  %72 = getelementptr inbounds { ptr, i8 }, ptr %15, i32 0, i32 1
  %73 = extractvalue { ptr, i8 } %68, 1
  store i8 %73, ptr %72, align 8
  call void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %14) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %14) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %9) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr %9) #5
  br label %24, !llvm.loop !21

74:                                               ; preds = %65
  %75 = landingpad { ptr, i32 }
          cleanup
  %76 = extractvalue { ptr, i32 } %75, 0
  store ptr %76, ptr %7, align 8
  %77 = extractvalue { ptr, i32 } %75, 1
  store i32 %77, ptr %8, align 4
  br label %82

78:                                               ; preds = %67
  %79 = landingpad { ptr, i32 }
          cleanup
  %80 = extractvalue { ptr, i32 } %79, 0
  store ptr %80, ptr %7, align 8
  %81 = extractvalue { ptr, i32 } %79, 1
  store i32 %81, ptr %8, align 4
  call void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %14) #5
  br label %82

82:                                               ; preds = %78, %74
  call void @llvm.lifetime.end.p0(i64 48, ptr %14) #5
  br label %83

83:                                               ; preds = %82, %61
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %9) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr %9) #5
  br label %89

84:                                               ; preds = %35
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  %85 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 1
  %86 = call noundef zeroext i1 @_ZNKSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(56) %85) #5
  br i1 %86, label %87, label %90

87:                                               ; preds = %84
  %88 = getelementptr inbounds %"class.sptk::HuffmanEncoding", ptr %16, i32 0, i32 2
  store i8 0, ptr %88, align 8, !tbaa !11
  br label %90

89:                                               ; preds = %83, %46
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  call void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %17) #5
  br label %91

90:                                               ; preds = %87, %84, %21
  ret void

91:                                               ; preds = %89
  %92 = load ptr, ptr %7, align 8
  %93 = load i32, ptr %8, align 4
  %94 = insertvalue { ptr, i32 } poison, ptr %92, 0
  %95 = insertvalue { ptr, i32 } %94, i32 %93, 1
  resume { ptr, i32 } %95
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 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)) #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEEC2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEE9push_backEb(ptr noundef nonnull align 8 dereferenceable(40), i1 noundef zeroext) #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE6insertIS7_IiS2_EEENSt9enable_ifIXsr16is_constructibleIS9_OT_EE5valueES7_INSt8__detail14_Node_iteratorIS9_Lb0ELb0EEEbEE4typeESG_(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(48)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZSt9make_pairIRiRSt6vectorIbSaIbEEESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS6_INS7_IT0_E4typeEE6__typeEEOS8_OSD_(ptr dead_on_unwind noalias writable sret(%"struct.std::pair.9") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 8 dereferenceable(40)) #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(56)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

attributes #0 = { 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 #1 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !19, i64 64}
!12 = !{!"_ZTSN4sptk15HuffmanEncodingE", !13, i64 8, !19, i64 64}
!13 = !{!"_ZTSSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE", !14, i64 0}
!14 = !{!"_ZTSSt10_HashtableIiSt4pairIKiSt6vectorIbSaIbEEESaIS5_ENSt8__detail10_Select1stESt8equal_toIiESt4hashIiENS7_18_Mod_range_hashingENS7_20_Default_ranged_hashENS7_20_Prime_rehash_policyENS7_17_Hashtable_traitsILb0ELb0ELb1EEEE", !6, i64 0, !15, i64 8, !16, i64 16, !15, i64 24, !17, i64 32, !6, i64 48}
!15 = !{!"long", !7, i64 0}
!16 = !{!"_ZTSNSt8__detail15_Hash_node_baseE", !6, i64 0}
!17 = !{!"_ZTSNSt8__detail20_Prime_rehash_policyE", !18, i64 0, !15, i64 8}
!18 = !{!"float", !7, i64 0}
!19 = !{!"bool", !7, i64 0}
!20 = !{!7, !7, i64 0}
!21 = distinct !{!21, !22}
!22 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::__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::vector" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair.9" = type { i32, %"class.std::vector" }

@_ZTVN4sptk15HuffmanEncodingE = external dso_local unnamed_addr constant { [4 x ptr] }, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4sptk15HuffmanEncodingC2EPSt14basic_ifstreamIcSt11char_traitsIcEE(ptr noundef nonnull align 8 dereferenceable(65) %0, ptr noundef %1) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"struct.std::pair.9", align 8
  store ptr getelementptr inbounds inrange(-16, 16) (i8, ptr @_ZTVN4sptk15HuffmanEncodingE, i64 16), ptr %0, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %9) #5
  %10 = getelementptr inbounds i8, ptr %0, i64 64
  store i8 1, ptr %10, align 8, !tbaa !8
  %11 = icmp eq ptr %1, null
  br i1 %11, label %.sink.split, label %12

12:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  br label %13

13:                                               ; preds = %40, %12
  %14 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %15 unwind label %28

15:                                               ; preds = %13
  %16 = 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) %14, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %17 unwind label %28

17:                                               ; preds = %15
  %18 = load ptr, ptr %16, align 8, !tbaa !5
  %19 = getelementptr i8, ptr %18, i64 -24
  %20 = load i64, ptr %19, align 8
  %21 = getelementptr inbounds i8, ptr %16, i64 %20
  %22 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %21)
          to label %23 unwind label %28

23:                                               ; preds = %17
  br i1 %22, label %24, label %47

24:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %5) #5
  call void @_ZNSt6vectorIbSaIbEEC2Ev(ptr noundef nonnull align 8 dereferenceable(40) %5) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #5
  %25 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  store ptr %25, ptr %6, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #5
  %26 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  store ptr %26, ptr %7, align 8
  %27 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  br i1 %27, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %33, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %8) #5
  invoke void @_ZSt9make_pairIRiRSt6vectorIbSaIbEEESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS6_INS7_IT0_E4typeEE6__typeEEOS8_OSD_(ptr dead_on_unwind nonnull writable sret(%"struct.std::pair.9") align 8 %8, ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 8 dereferenceable(40) %5)
          to label %38 unwind label %41

28:                                               ; preds = %17, %15, %13
  %29 = landingpad { ptr, i32 }
          cleanup
  br label %49

.lr.ph:                                           ; preds = %24, %33
  %30 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  %31 = load i8, ptr %30, align 1, !tbaa !19
  %32 = icmp eq i8 %31, 49
  invoke void @_ZNSt6vectorIbSaIbEE9push_backEb(ptr noundef nonnull align 8 dereferenceable(40) %5, i1 noundef zeroext %32)
          to label %33 unwind label %36

33:                                               ; preds = %.lr.ph
  %34 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  %35 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  br i1 %35, label %.lr.ph, label %._crit_edge

36:                                               ; preds = %.lr.ph
  %37 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  br label %46

38:                                               ; preds = %._crit_edge
  %39 = invoke { ptr, i8 } @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE6insertIS7_IiS2_EEENSt9enable_ifIXsr16is_constructibleIS9_OT_EE5valueES7_INSt8__detail14_Node_iteratorIS9_Lb0ELb0EEEbEE4typeESG_(ptr noundef nonnull align 8 dereferenceable(56) %9, ptr noundef nonnull align 8 dereferenceable(48) %8)
          to label %40 unwind label %43

40:                                               ; preds = %38
  call void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %8) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %8) #5
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %5) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #5
  br label %13, !llvm.loop !20

41:                                               ; preds = %._crit_edge
  %42 = landingpad { ptr, i32 }
          cleanup
  br label %45

43:                                               ; preds = %38
  %44 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48) %8) #5
  br label %45

45:                                               ; preds = %43, %41
  %.pn = phi { ptr, i32 } [ %44, %43 ], [ %42, %41 ]
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %8) #5
  br label %46

46:                                               ; preds = %45, %36
  %.pn12 = phi { ptr, i32 } [ %37, %36 ], [ %.pn, %45 ]
  call void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40) %5) #5
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %5) #5
  br label %49

47:                                               ; preds = %23
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  %48 = call noundef zeroext i1 @_ZNKSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(56) %9) #5
  br i1 %48, label %.sink.split, label %50

49:                                               ; preds = %46, %28
  %.pn12.pn = phi { ptr, i32 } [ %.pn12, %46 ], [ %29, %28 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %9) #5
  resume { ptr, i32 } %.pn12.pn

.sink.split:                                      ; preds = %47, %2
  store i8 0, ptr %10, align 8, !tbaa !8
  br label %50

50:                                               ; preds = %.sink.split, %47
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 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 #3

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEEC2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIbSaIbEE9push_backEb(ptr noundef nonnull align 8 dereferenceable(40), i1 noundef zeroext) local_unnamed_addr #0 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: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE6insertIS7_IiS2_EEENSt9enable_ifIXsr16is_constructibleIS9_OT_EE5valueES7_INSt8__detail14_Node_iteratorIS9_Lb0ELb0EEEbEE4typeESG_(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZSt9make_pairIRiRSt6vectorIbSaIbEEESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS6_INS7_IT0_E4typeEE6__typeEEOS8_OSD_(ptr dead_on_unwind noalias writable sret(%"struct.std::pair.9") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiSt6vectorIbSaIbEEED2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13_Bvector_baseISaIbEED2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

attributes #0 = { 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 #1 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !18, i64 64}
!9 = !{!"_ZTSN4sptk15HuffmanEncodingE", !10, i64 8, !18, i64 64}
!10 = !{!"_ZTSSt13unordered_mapIiSt6vectorIbSaIbEESt4hashIiESt8equal_toIiESaISt4pairIKiS2_EEE", !11, i64 0}
!11 = !{!"_ZTSSt10_HashtableIiSt4pairIKiSt6vectorIbSaIbEEESaIS5_ENSt8__detail10_Select1stESt8equal_toIiESt4hashIiENS7_18_Mod_range_hashingENS7_20_Default_ranged_hashENS7_20_Prime_rehash_policyENS7_17_Hashtable_traitsILb0ELb0ELb1EEEE", !12, i64 0, !14, i64 8, !15, i64 16, !14, i64 24, !16, i64 32, !12, i64 48}
!12 = !{!"any pointer", !13, i64 0}
!13 = !{!"omnipotent char", !7, i64 0}
!14 = !{!"long", !13, i64 0}
!15 = !{!"_ZTSNSt8__detail15_Hash_node_baseE", !12, i64 0}
!16 = !{!"_ZTSNSt8__detail20_Prime_rehash_policyE", !17, i64 0, !14, i64 8}
!17 = !{!"float", !13, i64 0}
!18 = !{!"bool", !13, i64 0}
!19 = !{!13, !13, i64 0}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}


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