; LLVM IR from sumitsojha88/Placement-Preparation :: Geeks For Geeks Solutions/HashMap (Largest Fibonacci Subsequence)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::unordered_set" = 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 }
%"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 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::unordered_set", align 8
  %8 = alloca [1000 x i32], align 16
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::pair", align 8
  %12 = alloca %"struct.std::pair", align 8
  %13 = alloca i32, align 4
  %14 = alloca %"struct.std::pair", align 8
  %15 = alloca i32, align 4
  %16 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %17 = alloca %"struct.std::__detail::_Node_iterator", align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #8
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  br label %19

19:                                               ; preds = %140, %0
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = add nsw i32 %20, -1
  store i32 %21, ptr %2, align 4, !tbaa !5
  %22 = icmp sgt i32 %20, 0
  br i1 %22, label %23, label %143

23:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #8
  %24 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = zext i32 %25 to i64
  %27 = call ptr @llvm.stacksave.p0()
  store ptr %27, ptr %4, align 8
  %28 = alloca i32, i64 %26, align 16
  store i64 %26, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #8
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %39, %23
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #8
  br label %42

34:                                               ; preds = %29
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %28, i64 %36
  %38 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %37)
  br label %39

39:                                               ; preds = %34
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %6, align 4, !tbaa !5
  br label %29, !llvm.loop !9

42:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 56, ptr %7) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %7) #8
  call void @llvm.lifetime.start.p0(i64 4000, ptr %8) #8
  %43 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 0
  store i32 0, ptr %43, align 16, !tbaa !5
  %44 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 1
  store i32 1, ptr %44, align 4, !tbaa !5
  %45 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 0
  %46 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %7, ptr noundef nonnull align 4 dereferenceable(4) %45)
          to label %47 unwind label %63

47:                                               ; preds = %42
  %48 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 0
  %49 = extractvalue { ptr, i8 } %46, 0
  store ptr %49, ptr %48, align 8
  %50 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 1
  %51 = extractvalue { ptr, i8 } %46, 1
  store i8 %51, ptr %50, align 8
  %52 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 1
  %53 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %7, ptr noundef nonnull align 4 dereferenceable(4) %52)
          to label %54 unwind label %63

54:                                               ; preds = %47
  %55 = getelementptr inbounds { ptr, i8 }, ptr %12, i32 0, i32 0
  %56 = extractvalue { ptr, i8 } %53, 0
  store ptr %56, ptr %55, align 8
  %57 = getelementptr inbounds { ptr, i8 }, ptr %12, i32 0, i32 1
  %58 = extractvalue { ptr, i8 } %53, 1
  store i8 %58, ptr %57, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #8
  store i32 2, ptr %13, align 4, !tbaa !5
  br label %59

59:                                               ; preds = %91, %54
  %60 = load i32, ptr %13, align 4, !tbaa !5
  %61 = icmp slt i32 %60, 1000
  br i1 %61, label %67, label %62

62:                                               ; preds = %59
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #8
  br label %98

63:                                               ; preds = %138, %47, %42
  %64 = landingpad { ptr, i32 }
          cleanup
  %65 = extractvalue { ptr, i32 } %64, 0
  store ptr %65, ptr %9, align 8
  %66 = extractvalue { ptr, i32 } %64, 1
  store i32 %66, ptr %10, align 4
  br label %142

67:                                               ; preds = %59
  %68 = load i32, ptr %13, align 4, !tbaa !5
  %69 = sub nsw i32 %68, 1
  %70 = sext i32 %69 to i64
  %71 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 %70
  %72 = load i32, ptr %71, align 4, !tbaa !5
  %73 = load i32, ptr %13, align 4, !tbaa !5
  %74 = sub nsw i32 %73, 2
  %75 = sext i32 %74 to i64
  %76 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 %75
  %77 = load i32, ptr %76, align 4, !tbaa !5
  %78 = add nsw i32 %72, %77
  %79 = load i32, ptr %13, align 4, !tbaa !5
  %80 = sext i32 %79 to i64
  %81 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 %80
  store i32 %78, ptr %81, align 4, !tbaa !5
  %82 = load i32, ptr %13, align 4, !tbaa !5
  %83 = sext i32 %82 to i64
  %84 = getelementptr inbounds [1000 x i32], ptr %8, i64 0, i64 %83
  %85 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %7, ptr noundef nonnull align 4 dereferenceable(4) %84)
          to label %86 unwind label %94

86:                                               ; preds = %67
  %87 = getelementptr inbounds { ptr, i8 }, ptr %14, i32 0, i32 0
  %88 = extractvalue { ptr, i8 } %85, 0
  store ptr %88, ptr %87, align 8
  %89 = getelementptr inbounds { ptr, i8 }, ptr %14, i32 0, i32 1
  %90 = extractvalue { ptr, i8 } %85, 1
  store i8 %90, ptr %89, align 8
  br label %91

91:                                               ; preds = %86
  %92 = load i32, ptr %13, align 4, !tbaa !5
  %93 = add nsw i32 %92, 1
  store i32 %93, ptr %13, align 4, !tbaa !5
  br label %59, !llvm.loop !11

94:                                               ; preds = %67
  %95 = landingpad { ptr, i32 }
          cleanup
  %96 = extractvalue { ptr, i32 } %95, 0
  store ptr %96, ptr %9, align 8
  %97 = extractvalue { ptr, i32 } %95, 1
  store i32 %97, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #8
  br label %142

98:                                               ; preds = %62
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #8
  store i32 0, ptr %15, align 4, !tbaa !5
  br label %99

99:                                               ; preds = %134, %98
  %100 = load i32, ptr %15, align 4, !tbaa !5
  %101 = load i32, ptr %3, align 4, !tbaa !5
  %102 = icmp slt i32 %100, %101
  br i1 %102, label %104, label %103

103:                                              ; preds = %99
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #8
  br label %138

104:                                              ; preds = %99
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #8
  %105 = load i32, ptr %15, align 4, !tbaa !5
  %106 = sext i32 %105 to i64
  %107 = getelementptr inbounds i32, ptr %28, i64 %106
  %108 = invoke ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4findERKi(ptr noundef nonnull align 8 dereferenceable(56) %7, ptr noundef nonnull align 4 dereferenceable(4) %107)
          to label %109 unwind label %125

109:                                              ; preds = %104
  %110 = getelementptr inbounds %"struct.std::__detail::_Node_iterator", ptr %16, i32 0, i32 0
  %111 = getelementptr inbounds %"struct.std::__detail::_Node_iterator_base", ptr %110, i32 0, i32 0
  store ptr %108, ptr %111, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #8
  %112 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56) %7) #8
  %113 = getelementptr inbounds %"struct.std::__detail::_Node_iterator", ptr %17, i32 0, i32 0
  %114 = getelementptr inbounds %"struct.std::__detail::_Node_iterator_base", ptr %113, i32 0, i32 0
  store ptr %112, ptr %114, align 8
  %115 = call noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8) %16, ptr noundef nonnull align 8 dereferenceable(8) %17) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #8
  br i1 %115, label %116, label %133

116:                                              ; preds = %109
  %117 = load i32, ptr %15, align 4, !tbaa !5
  %118 = sext i32 %117 to i64
  %119 = getelementptr inbounds i32, ptr %28, i64 %118
  %120 = load i32, ptr %119, align 4, !tbaa !5
  %121 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %120)
          to label %122 unwind label %129

122:                                              ; preds = %116
  %123 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %121, ptr noundef @.str)
          to label %124 unwind label %129

124:                                              ; preds = %122
  br label %133

125:                                              ; preds = %104
  %126 = landingpad { ptr, i32 }
          cleanup
  %127 = extractvalue { ptr, i32 } %126, 0
  store ptr %127, ptr %9, align 8
  %128 = extractvalue { ptr, i32 } %126, 1
  store i32 %128, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #8
  br label %137

129:                                              ; preds = %122, %116
  %130 = landingpad { ptr, i32 }
          cleanup
  %131 = extractvalue { ptr, i32 } %130, 0
  store ptr %131, ptr %9, align 8
  %132 = extractvalue { ptr, i32 } %130, 1
  store i32 %132, ptr %10, align 4
  br label %137

133:                                              ; preds = %124, %109
  br label %134

134:                                              ; preds = %133
  %135 = load i32, ptr %15, align 4, !tbaa !5
  %136 = add nsw i32 %135, 1
  store i32 %136, ptr %15, align 4, !tbaa !5
  br label %99, !llvm.loop !12

137:                                              ; preds = %129, %125
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #8
  br label %142

138:                                              ; preds = %103
  %139 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %140 unwind label %63

140:                                              ; preds = %138
  call void @llvm.lifetime.end.p0(i64 4000, ptr %8) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %7) #8
  call void @llvm.lifetime.end.p0(i64 56, ptr %7) #8
  %141 = load ptr, ptr %4, align 8
  call void @llvm.stackrestore.p0(ptr %141)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #8
  br label %19, !llvm.loop !13

142:                                              ; preds = %137, %94, %63
  call void @llvm.lifetime.end.p0(i64 4000, ptr %8) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %7) #8
  call void @llvm.lifetime.end.p0(i64 56, ptr %7) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #8
  br label %144

143:                                              ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #8
  ret i32 0

144:                                              ; preds = %142
  %145 = load ptr, ptr %9, align 8
  %146 = load i32, ptr %10, align 4
  %147 = insertvalue { ptr, i32 } poison, ptr %145, 0
  %148 = insertvalue { ptr, i32 } %147, i32 %146, 1
  resume { ptr, i32 } %148
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; 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 @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) #5 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4findERKi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56)) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5 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)) #6

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #7 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nosync nounwind willreturn }
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 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { 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 #7 = { 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 #8 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}


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

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::unordered_set" = 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 }
%"struct.std::__detail::_Node_iterator" = type { %"struct.std::__detail::_Node_iterator_base" }
%"struct.std::__detail::_Node_iterator_base" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [2 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 i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::unordered_set", align 8
  %4 = alloca [1000 x i32], align 16
  %5 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %6 = alloca %"struct.std::__detail::_Node_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #8
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr %1, align 4, !tbaa !5
  %10 = icmp sgt i32 %8, 0
  br i1 %10, label %.lr.ph34, label %._crit_edge35

.lr.ph34:                                         ; preds = %0
  %11 = getelementptr inbounds i8, ptr %4, i64 4
  br label %12

12:                                               ; preds = %.lr.ph34, %63
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #8
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = zext i32 %14 to i64
  %16 = call ptr @llvm.stacksave.p0()
  %17 = alloca i32, i64 %15, align 16
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = icmp sgt i32 %18, 0
  br i1 %19, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %12
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %3) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #8
  call void @llvm.lifetime.start.p0(i64 4000, ptr nonnull %4) #8
  store i32 0, ptr %4, align 16, !tbaa !5
  store i32 1, ptr %11, align 4, !tbaa !5
  %20 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %26 unwind label %30

.lr.ph:                                           ; preds = %12, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %12 ]
  %21 = getelementptr inbounds i32, ptr %17, i64 %indvars.iv
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %21)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = icmp slt i64 %indvars.iv.next, %24
  br i1 %25, label %.lr.ph, label %._crit_edge, !llvm.loop !9

26:                                               ; preds = %._crit_edge
  %27 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %11)
          to label %.preheader27 unwind label %30

.preheader:                                       ; preds = %41
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = icmp sgt i32 %28, 0
  br i1 %29, label %.lr.ph31, label %._crit_edge32

30:                                               ; preds = %._crit_edge32, %26, %._crit_edge
  %31 = landingpad { ptr, i32 }
          cleanup
  br label %67

.preheader27:                                     ; preds = %26, %41
  %indvars.iv37 = phi i64 [ %indvars.iv.next38, %41 ], [ 2, %26 ]
  %32 = add nsw i64 %indvars.iv37, -1
  %33 = getelementptr inbounds [1000 x i32], ptr %4, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = add nsw i64 %indvars.iv37, -2
  %36 = getelementptr inbounds [1000 x i32], ptr %4, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = add nsw i32 %37, %34
  %39 = getelementptr inbounds [1000 x i32], ptr %4, i64 0, i64 %indvars.iv37
  store i32 %38, ptr %39, align 4, !tbaa !5
  %40 = invoke { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %39)
          to label %41 unwind label %42

41:                                               ; preds = %.preheader27
  %indvars.iv.next38 = add nuw nsw i64 %indvars.iv37, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next38, 1000
  br i1 %exitcond.not, label %.preheader, label %.preheader27, !llvm.loop !11

42:                                               ; preds = %.preheader27
  %43 = landingpad { ptr, i32 }
          cleanup
  br label %67

._crit_edge32:                                    ; preds = %59, %.preheader
  %44 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %63 unwind label %30

.lr.ph31:                                         ; preds = %.preheader, %59
  %indvars.iv40 = phi i64 [ %indvars.iv.next41, %59 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #8
  %45 = getelementptr inbounds i32, ptr %17, i64 %indvars.iv40
  %46 = invoke ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4findERKi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %45)
          to label %47 unwind label %55

47:                                               ; preds = %.lr.ph31
  store ptr %46, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #8
  %48 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56) %3) #8
  store ptr %48, ptr %6, align 8
  %49 = call noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #8
  br i1 %49, label %50, label %59

50:                                               ; preds = %47
  %51 = load i32, ptr %45, align 4, !tbaa !5
  %52 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %51)
          to label %53 unwind label %57

53:                                               ; preds = %50
  %54 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %52, ptr noundef nonnull @.str)
          to label %59 unwind label %57

55:                                               ; preds = %.lr.ph31
  %56 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #8
  br label %67

57:                                               ; preds = %53, %50
  %58 = landingpad { ptr, i32 }
          cleanup
  br label %67

59:                                               ; preds = %47, %53
  %indvars.iv.next41 = add nuw nsw i64 %indvars.iv40, 1
  %60 = load i32, ptr %2, align 4, !tbaa !5
  %61 = sext i32 %60 to i64
  %62 = icmp slt i64 %indvars.iv.next41, %61
  br i1 %62, label %.lr.ph31, label %._crit_edge32, !llvm.loop !12

63:                                               ; preds = %._crit_edge32
  call void @llvm.lifetime.end.p0(i64 4000, ptr nonnull %4) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #8
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #8
  call void @llvm.stackrestore.p0(ptr %16)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #8
  %64 = load i32, ptr %1, align 4, !tbaa !5
  %65 = add nsw i32 %64, -1
  store i32 %65, ptr %1, align 4, !tbaa !5
  %66 = icmp sgt i32 %64, 0
  br i1 %66, label %12, label %._crit_edge35, !llvm.loop !13

67:                                               ; preds = %55, %57, %42, %30
  %.pn25 = phi { ptr, i32 } [ %43, %42 ], [ %31, %30 ], [ %58, %57 ], [ %56, %55 ]
  call void @llvm.lifetime.end.p0(i64 4000, ptr nonnull %4) #8
  call void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #8
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #8
  resume { ptr, i32 } %.pn25

._crit_edge35:                                    ; preds = %63, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #8
  ret i32 0
}

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

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 #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; 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 @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE4findERKi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; 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 #5 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)) #6

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #7 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nocallback nofree nosync nounwind willreturn }
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 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { 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 #7 = { 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 #8 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}


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