; LLVM IR from codemistic/Data-Structures-and-Algorithms :: CPP (findSum)

; 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.Solution = type { i8 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

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

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %class.Solution, align 1
  %12 = alloca %"class.std::vector", align 8
  %13 = alloca i32, align 4
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  %17 = 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 %18

18:                                               ; preds = %133, %0
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = add nsw i32 %19, -1
  store i32 %20, ptr %2, align 4, !tbaa !5
  %21 = icmp ne i32 %19, 0
  br i1 %21, label %22, label %136

22:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  %23 = 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)
  %24 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %23, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %25 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %24, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %26 = load i32, ptr %3, align 4, !tbaa !5
  %27 = zext i32 %26 to i64
  %28 = call ptr @llvm.stacksave.p0()
  store ptr %28, ptr %6, align 8
  %29 = alloca i32, i64 %27, align 16
  store i64 %27, ptr %7, align 8
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = zext i32 %30 to i64
  %32 = alloca i32, i64 %31, align 16
  store i64 %31, ptr %8, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #7
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %33

33:                                               ; preds = %43, %22
  %34 = load i32, ptr %9, align 4, !tbaa !5
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = icmp slt i32 %34, %35
  br i1 %36, label %38, label %37

37:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  br label %46

38:                                               ; preds = %33
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr %29, i64 %40
  %42 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %41)
  br label %43

43:                                               ; preds = %38
  %44 = load i32, ptr %9, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %9, align 4, !tbaa !5
  br label %33, !llvm.loop !9

46:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %47

47:                                               ; preds = %57, %46
  %48 = load i32, ptr %10, align 4, !tbaa !5
  %49 = load i32, ptr %4, align 4, !tbaa !5
  %50 = icmp slt i32 %48, %49
  br i1 %50, label %52, label %51

51:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %60

52:                                               ; preds = %47
  %53 = load i32, ptr %10, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds i32, ptr %32, i64 %54
  %56 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %55)
  br label %57

57:                                               ; preds = %52
  %58 = load i32, ptr %10, align 4, !tbaa !5
  %59 = add nsw i32 %58, 1
  store i32 %59, ptr %10, align 4, !tbaa !5
  br label %47, !llvm.loop !11

60:                                               ; preds = %51
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #7
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #7
  %61 = load i32, ptr %3, align 4, !tbaa !5
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %63 = load i32, ptr %5, align 4, !tbaa !5
  call void @_ZN8Solution8allPairsEPiS0_iii(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %12, ptr noundef nonnull align 1 dereferenceable(1) %11, ptr noundef %29, ptr noundef %32, i32 noundef %61, i32 noundef %62, i32 noundef %63)
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #7
  %64 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  %65 = trunc i64 %64 to i32
  store i32 %65, ptr %13, align 4, !tbaa !5
  %66 = load i32, ptr %13, align 4, !tbaa !5
  %67 = icmp eq i32 %66, 0
  br i1 %67, label %68, label %77

68:                                               ; preds = %60
  %69 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef -1)
          to label %70 unwind label %73

70:                                               ; preds = %68
  %71 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %69, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %72 unwind label %73

72:                                               ; preds = %70
  br label %133

73:                                               ; preds = %130, %70, %68
  %74 = landingpad { ptr, i32 }
          cleanup
  %75 = extractvalue { ptr, i32 } %74, 0
  store ptr %75, ptr %14, align 8
  %76 = extractvalue { ptr, i32 } %74, 1
  store i32 %76, ptr %15, align 4
  br label %135

77:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #7
  store i32 0, ptr %16, align 4, !tbaa !5
  br label %78

78:                                               ; preds = %127, %77
  %79 = load i32, ptr %16, align 4, !tbaa !5
  %80 = load i32, ptr %13, align 4, !tbaa !5
  %81 = icmp slt i32 %79, %80
  br i1 %81, label %83, label %82

82:                                               ; preds = %78
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  br label %130

83:                                               ; preds = %78
  %84 = load i32, ptr %16, align 4, !tbaa !5
  %85 = icmp eq i32 %84, 0
  br i1 %85, label %86, label %107

86:                                               ; preds = %83
  %87 = load i32, ptr %16, align 4, !tbaa !5
  %88 = sext i32 %87 to i64
  %89 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %88) #7
  %90 = getelementptr inbounds %"struct.std::pair", ptr %89, i32 0, i32 0
  %91 = load i32, ptr %90, align 4, !tbaa !12
  %92 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %91)
          to label %93 unwind label %103

93:                                               ; preds = %86
  %94 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %92, ptr noundef @.str)
          to label %95 unwind label %103

95:                                               ; preds = %93
  %96 = load i32, ptr %16, align 4, !tbaa !5
  %97 = sext i32 %96 to i64
  %98 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %97) #7
  %99 = getelementptr inbounds %"struct.std::pair", ptr %98, i32 0, i32 1
  %100 = load i32, ptr %99, align 4, !tbaa !14
  %101 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %94, i32 noundef %100)
          to label %102 unwind label %103

102:                                              ; preds = %95
  br label %126

103:                                              ; preds = %118, %116, %109, %107, %95, %93, %86
  %104 = landingpad { ptr, i32 }
          cleanup
  %105 = extractvalue { ptr, i32 } %104, 0
  store ptr %105, ptr %14, align 8
  %106 = extractvalue { ptr, i32 } %104, 1
  store i32 %106, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  br label %135

107:                                              ; preds = %83
  %108 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %109 unwind label %103

109:                                              ; preds = %107
  %110 = load i32, ptr %16, align 4, !tbaa !5
  %111 = sext i32 %110 to i64
  %112 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %111) #7
  %113 = getelementptr inbounds %"struct.std::pair", ptr %112, i32 0, i32 0
  %114 = load i32, ptr %113, align 4, !tbaa !12
  %115 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %108, i32 noundef %114)
          to label %116 unwind label %103

116:                                              ; preds = %109
  %117 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %115, ptr noundef @.str)
          to label %118 unwind label %103

118:                                              ; preds = %116
  %119 = load i32, ptr %16, align 4, !tbaa !5
  %120 = sext i32 %119 to i64
  %121 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %120) #7
  %122 = getelementptr inbounds %"struct.std::pair", ptr %121, i32 0, i32 1
  %123 = load i32, ptr %122, align 4, !tbaa !14
  %124 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %117, i32 noundef %123)
          to label %125 unwind label %103

125:                                              ; preds = %118
  br label %126

126:                                              ; preds = %125, %102
  br label %127

127:                                              ; preds = %126
  %128 = load i32, ptr %16, align 4, !tbaa !5
  %129 = add nsw i32 %128, 1
  store i32 %129, ptr %16, align 4, !tbaa !5
  br label %78, !llvm.loop !15

130:                                              ; preds = %82
  %131 = 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 %132 unwind label %73

132:                                              ; preds = %130
  br label %133

133:                                              ; preds = %132, %72
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #7
  %134 = load ptr, ptr %6, align 8
  call void @llvm.stackrestore.p0(ptr %134)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  br label %18, !llvm.loop !16

135:                                              ; preds = %103, %73
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #7
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %137

136:                                              ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  ret i32 0

137:                                              ; preds = %135
  %138 = load ptr, ptr %14, align 8
  %139 = load i32, ptr %15, align 4
  %140 = insertvalue { ptr, i32 } poison, ptr %138, 0
  %141 = insertvalue { ptr, i32 } %140, i32 %139, 1
  resume { ptr, i32 } %141
}

; 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 uwtable
declare dso_local void @_ZN8Solution8allPairsEPiS0_iii(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, ptr noundef, i32 noundef, i32 noundef, i32 noundef) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #5 align 2

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4 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 uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #6

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 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 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 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 #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 = { 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 = !{!13, !6, i64 0}
!13 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!14 = !{!13, !6, i64 4}
!15 = distinct !{!15, !10}
!16 = distinct !{!16, !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.Solution = type { i8 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, 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
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %class.Solution, align 1
  %6 = alloca %"class.std::vector", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %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
  %.not30 = icmp eq i32 %8, 0
  br i1 %.not30, label %._crit_edge33, label %.lr.ph32

.lr.ph32:                                         ; preds = %0, %72
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  %10 = 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)
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %10, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = zext i32 %13 to i64
  %15 = call ptr @llvm.stacksave.p0()
  %16 = alloca i32, i64 %14, align 16
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = zext i32 %17 to i64
  %19 = alloca i32, i64 %18, align 16
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = icmp sgt i32 %20, 0
  br i1 %21, label %.lr.ph, label %.preheader23

.preheader23.loopexit:                            ; preds = %.lr.ph
  %.pre = load i32, ptr %3, align 4, !tbaa !5
  br label %.preheader23

.preheader23:                                     ; preds = %.preheader23.loopexit, %.lr.ph32
  %22 = phi i32 [ %27, %.preheader23.loopexit ], [ %20, %.lr.ph32 ]
  %23 = phi i32 [ %.pre, %.preheader23.loopexit ], [ %17, %.lr.ph32 ]
  %24 = icmp sgt i32 %23, 0
  br i1 %24, label %.lr.ph26, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph32, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph32 ]
  %25 = getelementptr inbounds i32, ptr %16, i64 %indvars.iv
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %25)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = icmp slt i64 %indvars.iv.next, %28
  br i1 %29, label %.lr.ph, label %.preheader23.loopexit, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %.lr.ph26
  %.pre43 = load i32, ptr %2, align 4, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.preheader23
  %30 = phi i32 [ %22, %.preheader23 ], [ %.pre43, %._crit_edge.loopexit ]
  %.lcssa = phi i32 [ %23, %.preheader23 ], [ %50, %._crit_edge.loopexit ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #7
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %6) #7
  %31 = load i32, ptr %4, align 4, !tbaa !5
  call void @_ZN8Solution8allPairsEPiS0_iii(ptr dead_on_unwind nonnull writable sret(%"class.std::vector") align 8 %6, ptr noundef nonnull align 1 dereferenceable(1) %5, ptr noundef nonnull %16, ptr noundef nonnull %19, i32 noundef %30, i32 noundef %.lcssa, i32 noundef %31)
  %32 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  %33 = trunc i64 %32 to i32
  %34 = icmp eq i32 %33, 0
  br i1 %34, label %53, label %.preheader

.preheader:                                       ; preds = %._crit_edge
  %35 = icmp sgt i32 %33, 0
  br i1 %35, label %36, label %._crit_edge29.invoke

36:                                               ; preds = %.preheader
  %wide.trip.count = and i64 %32, 2147483647
  %37 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef 0) #7
  %38 = load i32, ptr %37, align 4, !tbaa !11
  %39 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %38)
          to label %40 unwind label %.loopexit.split-lp

40:                                               ; preds = %36
  %41 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %39, ptr noundef nonnull @.str)
          to label %42 unwind label %.loopexit.split-lp

42:                                               ; preds = %40
  %43 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef 0) #7
  %44 = getelementptr inbounds i8, ptr %43, i64 4
  %45 = load i32, ptr %44, align 4, !tbaa !13
  %46 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %41, i32 noundef %45)
          to label %47 unwind label %.loopexit.split-lp

47:                                               ; preds = %42
  %exitcond.peel.not = icmp eq i64 %wide.trip.count, 1
  br i1 %exitcond.peel.not, label %._crit_edge29.invoke, label %.lr.ph28.peel.next

.lr.ph26:                                         ; preds = %.preheader23, %.lr.ph26
  %indvars.iv36 = phi i64 [ %indvars.iv.next37, %.lr.ph26 ], [ 0, %.preheader23 ]
  %48 = getelementptr inbounds i32, ptr %19, i64 %indvars.iv36
  %49 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %48)
  %indvars.iv.next37 = add nuw nsw i64 %indvars.iv36, 1
  %50 = load i32, ptr %3, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = icmp slt i64 %indvars.iv.next37, %51
  br i1 %52, label %.lr.ph26, label %._crit_edge.loopexit, !llvm.loop !14

53:                                               ; preds = %._crit_edge
  %54 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef -1)
          to label %._crit_edge29.invoke unwind label %55

55:                                               ; preds = %._crit_edge29.invoke, %53
  %56 = landingpad { ptr, i32 }
          cleanup
  br label %75

._crit_edge29.invoke:                             ; preds = %71, %53, %.preheader, %47
  %57 = phi ptr [ @_ZSt4cout, %47 ], [ @_ZSt4cout, %.preheader ], [ %54, %53 ], [ @_ZSt4cout, %71 ]
  %58 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %57, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %72 unwind label %55

.loopexit:                                        ; preds = %.lr.ph28.peel.next, %60, %64, %66
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %75

.loopexit.split-lp:                               ; preds = %36, %40, %42
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %75

.lr.ph28.peel.next:                               ; preds = %47, %71
  %indvars.iv39 = phi i64 [ %indvars.iv.next40, %71 ], [ 1, %47 ]
  %59 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
          to label %60 unwind label %.loopexit

60:                                               ; preds = %.lr.ph28.peel.next
  %61 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %indvars.iv39) #7
  %62 = load i32, ptr %61, align 4, !tbaa !11
  %63 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %59, i32 noundef %62)
          to label %64 unwind label %.loopexit

64:                                               ; preds = %60
  %65 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %63, ptr noundef nonnull @.str)
          to label %66 unwind label %.loopexit

66:                                               ; preds = %64
  %67 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %indvars.iv39) #7
  %68 = getelementptr inbounds i8, ptr %67, i64 4
  %69 = load i32, ptr %68, align 4, !tbaa !13
  %70 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %65, i32 noundef %69)
          to label %71 unwind label %.loopexit

71:                                               ; preds = %66
  %indvars.iv.next40 = add nuw nsw i64 %indvars.iv39, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next40, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge29.invoke, label %.lr.ph28.peel.next, !llvm.loop !15

72:                                               ; preds = %._crit_edge29.invoke
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #7
  call void @llvm.stackrestore.p0(ptr %15)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  %73 = load i32, ptr %1, align 4, !tbaa !5
  %74 = add nsw i32 %73, -1
  store i32 %74, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %73, 0
  br i1 %.not, label %._crit_edge33, label %.lr.ph32, !llvm.loop !17

75:                                               ; preds = %.loopexit, %.loopexit.split-lp, %55
  %.pn = phi { ptr, i32 } [ %56, %55 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn

._crit_edge33:                                    ; preds = %72, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  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 uwtable
declare dso_local void @_ZN8Solution8allPairsEPiS0_iii(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #5 align 2

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

declare i32 @__gxx_personality_v0(...)

; 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 #4 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 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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #5 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 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 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 #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 = { 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 = !{!12, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10, !16}
!16 = !{!"llvm.loop.peeled.count", i32 1}
!17 = distinct !{!17, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopFullUnrollPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SCCPPass,SROAPass,SimplifyCFGPass