; LLVM IR from VastoLorde95/Competitive-Programming :: Hackerrank/101 Hacks/101 Hack 2015/101 Hack July/Problem C/C.ll (Z5countxi)

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

@pos = external dso_local global [26 x %"class.std::vector"], align 16
@it = external dso_local global %"class.__gnu_cxx::__normal_iterator", align 8
@up = external dso_local global i64, align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5countxi(i64 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca %"struct.std::pair", align 8
  %11 = alloca i64, align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = icmp eq i64 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %2
  store i64 0, ptr %3, align 8
  br label %73

17:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %52, %17
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = icmp ne i64 %19, 0
  br i1 %20, label %21, label %71

21:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [26 x %"class.std::vector"], ptr @pos, i64 0, i64 %23
  %25 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %24) #6
  %26 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %25, ptr %26, align 8
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [26 x %"class.std::vector"], ptr @pos, i64 0, i64 %28
  %30 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %29) #6
  %31 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %30, ptr %31, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr %10) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  %32 = load i64, ptr @up, align 8, !tbaa !5
  %33 = mul nsw i64 %32, 2
  store i64 %33, ptr %11, align 8, !tbaa !5
  %34 = call { i64, i64 } @_ZSt9make_pairIRxxESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %11)
  %35 = getelementptr inbounds { i64, i64 }, ptr %10, i32 0, i32 0
  %36 = extractvalue { i64, i64 } %34, 0
  store i64 %36, ptr %35, align 8
  %37 = getelementptr inbounds { i64, i64 }, ptr %10, i32 0, i32 1
  %38 = extractvalue { i64, i64 } %34, 1
  store i64 %38, ptr %37, align 8
  %39 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  %40 = load ptr, ptr %39, align 8
  %41 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  %42 = load ptr, ptr %41, align 8
  %43 = call ptr @_ZSt11upper_boundIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS3_SaIS3_EEEES3_ET_S9_S9_RKT0_(ptr %40, ptr %42, ptr noundef nonnull align 8 dereferenceable(16) %10)
  %44 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %43, ptr %44, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 @it, ptr align 8 %7, i64 8, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %45 = load i32, ptr %5, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [26 x %"class.std::vector"], ptr @pos, i64 0, i64 %46
  %48 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %47) #6
  %49 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  store ptr %48, ptr %49, align 8
  %50 = call noundef zeroext i1 @_ZN9__gnu_cxxeqIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) @it, ptr noundef nonnull align 8 dereferenceable(8) %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  br i1 %50, label %51, label %52

51:                                               ; preds = %21
  br label %71

52:                                               ; preds = %21
  %53 = call ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEmmEi(ptr noundef nonnull align 8 dereferenceable(8) @it, i32 noundef 0) #6
  %54 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %53, ptr %54, align 8
  %55 = load i64, ptr %4, align 8, !tbaa !5
  %56 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #6
  %57 = getelementptr inbounds %"struct.std::pair", ptr %56, i32 0, i32 0
  %58 = load i64, ptr %57, align 8, !tbaa !14
  %59 = sdiv i64 %55, %58
  %60 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #6
  %61 = getelementptr inbounds %"struct.std::pair", ptr %60, i32 0, i32 1
  %62 = load i64, ptr %61, align 8, !tbaa !16
  %63 = mul nsw i64 %59, %62
  %64 = load i64, ptr %6, align 8, !tbaa !5
  %65 = add nsw i64 %64, %63
  store i64 %65, ptr %6, align 8, !tbaa !5
  %66 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #6
  %67 = getelementptr inbounds %"struct.std::pair", ptr %66, i32 0, i32 0
  %68 = load i64, ptr %67, align 8, !tbaa !14
  %69 = load i64, ptr %4, align 8, !tbaa !5
  %70 = srem i64 %69, %68
  store i64 %70, ptr %4, align 8, !tbaa !5
  br label %18, !llvm.loop !17

71:                                               ; preds = %51, %18
  %72 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %72, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  br label %73

73:                                               ; preds = %71, %16
  %74 = load i64, ptr %3, align 8
  ret i64 %74
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt11upper_boundIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS3_SaIS3_EEEES3_ET_S9_S9_RKT0_(ptr, ptr, ptr noundef nonnull align 8 dereferenceable(16)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRxxESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #0

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxeqIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEmmEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 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 = { 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 #3 = { 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 = { 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 #6 = { 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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 8, !12}
!12 = !{!13, !13, i64 0}
!13 = !{!"any pointer", !7, i64 0}
!14 = !{!15, !6, i64 0}
!15 = !{!"_ZTSSt4pairIxxE", !6, i64 0, !6, i64 8}
!16 = !{!15, !6, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i64, i64 }

@pos = external dso_local global [26 x %"class.std::vector"], align 16
@it = external dso_local global %"class.__gnu_cxx::__normal_iterator", align 8
@up = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5countxi(i64 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i64, align 8
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i64, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  %7 = icmp eq i64 %0, 0
  br i1 %7, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %8 = sext i32 %1 to i64
  %9 = getelementptr inbounds [26 x %"class.std::vector"], ptr @pos, i64 0, i64 %8
  %10 = getelementptr inbounds i8, ptr %4, i64 8
  br label %11

11:                                               ; preds = %.preheader, %22
  %.0910 = phi i64 [ 0, %.preheader ], [ %32, %22 ]
  %12 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #5
  %13 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  %14 = load i64, ptr @up, align 8, !tbaa !5
  %15 = shl nsw i64 %14, 1
  store i64 %15, ptr %5, align 8, !tbaa !5
  %16 = call { i64, i64 } @_ZSt9make_pairIRxxESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %17 = extractvalue { i64, i64 } %16, 0
  store i64 %17, ptr %4, align 8
  %18 = extractvalue { i64, i64 } %16, 1
  store i64 %18, ptr %10, align 8
  %19 = call ptr @_ZSt11upper_boundIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS3_SaIS3_EEEES3_ET_S9_S9_RKT0_(ptr %12, ptr %13, ptr noundef nonnull align 8 dereferenceable(16) %4)
  store ptr %19, ptr @it, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #5
  %20 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #5
  store ptr %20, ptr %6, align 8
  %21 = call noundef zeroext i1 @_ZN9__gnu_cxxeqIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) @it, ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  br i1 %21, label %.loopexit, label %22

22:                                               ; preds = %11
  %23 = call ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEmmEi(ptr noundef nonnull align 8 dereferenceable(8) @it, i32 noundef 0) #5
  %24 = load i64, ptr %3, align 8, !tbaa !5
  %25 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #5
  %26 = load i64, ptr %25, align 8, !tbaa !11
  %27 = sdiv i64 %24, %26
  %28 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #5
  %29 = getelementptr inbounds i8, ptr %28, i64 8
  %30 = load i64, ptr %29, align 8, !tbaa !13
  %31 = mul nsw i64 %30, %27
  %32 = add nsw i64 %31, %.0910
  %33 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) @it) #5
  %34 = load i64, ptr %33, align 8, !tbaa !11
  %35 = load i64, ptr %3, align 8, !tbaa !5
  %36 = srem i64 %35, %34
  store i64 %36, ptr %3, align 8, !tbaa !5
  %.not = icmp eq i64 %36, 0
  br i1 %.not, label %.loopexit, label %11, !llvm.loop !14

.loopexit:                                        ; preds = %22, %11, %2
  %.0 = phi i64 [ 0, %2 ], [ %.0910, %11 ], [ %32, %22 ]
  ret i64 %.0
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt11upper_boundIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS3_SaIS3_EEEES3_ET_S9_S9_RKT0_(ptr, ptr, ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRxxESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxeqIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(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 ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEmmEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 = { 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 = !{!"long 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}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSSt4pairIxxE", !6, i64 0, !6, i64 8}
!13 = !{!12, !6, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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