; LLVM IR from AdarshGaur/Competitive-Programming :: Codeforces/Codeforces Round #766 (Div. 2)/C. Not Assigning.ll (Z3dfslll)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i64, i64 }

@g = external dso_local global %"class.std::vector", align 8
@a = external dso_local global [100007 x i64], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3dfslll(i64 noundef %0, i64 noundef %1, i64 noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::pair", align 8
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt4pairIllESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @g, i64 noundef %14) #5
  store ptr %15, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %16 = load ptr, ptr %7, align 8, !tbaa !9
  %17 = call ptr @_ZNSt6vectorISt4pairIllESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %16) #5
  %18 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %17, ptr %18, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %19 = load ptr, ptr %7, align 8, !tbaa !9
  %20 = call ptr @_ZNSt6vectorISt4pairIllESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %19) #5
  %21 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %20, ptr %21, align 8
  br label %22

22:                                               ; preds = %47, %3
  %23 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIllESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull align 8 dereferenceable(8) %9) #5
  br i1 %23, label %25, label %24

24:                                               ; preds = %22
  store i32 2, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  br label %49

25:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #5
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %11, ptr align 8 %26, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm0EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16) %11) #5
  store ptr %27, ptr %12, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm1EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16) %11) #5
  store ptr %28, ptr %13, align 8, !tbaa !9
  %29 = load ptr, ptr %12, align 8, !tbaa !9
  %30 = load i64, ptr %29, align 8, !tbaa !5
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = icmp eq i64 %30, %31
  br i1 %32, label %33, label %34

33:                                               ; preds = %25
  store i32 3, ptr %10, align 4
  br label %44

34:                                               ; preds = %25
  %35 = load i64, ptr %6, align 8, !tbaa !5
  %36 = load ptr, ptr %13, align 8, !tbaa !9
  %37 = load i64, ptr %36, align 8, !tbaa !5
  %38 = getelementptr inbounds [100007 x i64], ptr @a, i64 0, i64 %37
  store i64 %35, ptr %38, align 8, !tbaa !5
  %39 = load ptr, ptr %12, align 8, !tbaa !9
  %40 = load i64, ptr %39, align 8, !tbaa !5
  %41 = load i64, ptr %4, align 8, !tbaa !5
  %42 = load i64, ptr %6, align 8, !tbaa !5
  %43 = xor i64 %42, 1
  call void @_Z3dfslll(i64 noundef %40, i64 noundef %41, i64 noundef %43)
  store i32 0, ptr %10, align 4
  br label %44

44:                                               ; preds = %34, %33
  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 16, ptr %11) #5
  %45 = load i32, ptr %10, align 4
  switch i32 %45, label %50 [
    i32 0, label %46
    i32 3, label %47
  ]

46:                                               ; preds = %44
  br label %47

47:                                               ; preds = %46, %44
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #5
  br label %22

49:                                               ; preds = %24
  ret void

50:                                               ; preds = %44
  unreachable
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt4pairIllESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIllESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIllESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIllESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm0EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm1EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16)) #2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { 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 #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nounwind }

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

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


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::pair<long, long>>, std::allocator<std::vector<std::pair<long, long>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i64, i64 }

@g = external dso_local global %"class.std::vector", align 8
@a = external dso_local local_unnamed_addr global [100007 x i64], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z3dfslll(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"struct.std::pair", align 8
  %7 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt4pairIllESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @g, i64 noundef %0) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %8 = tail call ptr @_ZNSt6vectorISt4pairIllESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  store ptr %8, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %9 = tail call ptr @_ZNSt6vectorISt4pairIllESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  store ptr %9, ptr %5, align 8
  %10 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIllESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  br i1 %10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %11 = xor i64 %2, 1
  br label %12

._crit_edge:                                      ; preds = %22, %3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  ret void

12:                                               ; preds = %.lr.ph, %22
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %6) #4
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %6, ptr noundef nonnull align 8 dereferenceable(16) %13, i64 16, i1 false)
  %14 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm0EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16) %6) #4
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm1EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16) %6) #4
  %16 = load i64, ptr %14, align 8, !tbaa !5
  %17 = icmp eq i64 %16, %1
  br i1 %17, label %22, label %18

18:                                               ; preds = %12
  %19 = load i64, ptr %15, align 8, !tbaa !5
  %20 = getelementptr inbounds [100007 x i64], ptr @a, i64 0, i64 %19
  store i64 %2, ptr %20, align 8, !tbaa !5
  %21 = load i64, ptr %14, align 8, !tbaa !5
  call void @_Z3dfslll(i64 noundef %21, i64 noundef %0, i64 noundef %11)
  br label %22

22:                                               ; preds = %12, %18
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %6) #4
  %23 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  %24 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIllESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  br i1 %24, label %12, label %._crit_edge
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_ISt4pairIllESaIS1_EESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIllESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIllESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIllESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm0EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3getILm1EllEONSt13tuple_elementIXT_ESt4pairIT0_T1_EE4typeEOS4_(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0

; 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 noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIllESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nounwind }

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

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


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