; LLVM IR from TheAlgorithms/C-Plus-Plus :: graph/hopcroft_karp.ll (ZN5graph7HKGraphC2Ev)

; 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.graph::HKGraph" = type { i32, i32, i32, i32, %"class.std::vector.0", %"class.std::vector", %"class.std::vector", %"class.std::vector" }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::__cxx11::list<int>, std::allocator<std::__cxx11::list<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::__cxx11::list<int>, std::allocator<std::__cxx11::list<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::__cxx11::list<int>, std::allocator<std::__cxx11::list<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::__cxx11::list<int>, std::allocator<std::__cxx11::list<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN5graph7HKGraphC2Ev(ptr noundef nonnull align 8 dereferenceable(112) %0) unnamed_addr #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 0
  store i32 0, ptr %4, align 8, !tbaa !9
  %5 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 1
  store i32 0, ptr %5, align 4, !tbaa !20
  %6 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 2
  store i32 0, ptr %6, align 8, !tbaa !21
  %7 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 3
  store i32 2147483647, ptr %7, align 4, !tbaa !22
  %8 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 4
  call void @_ZNSt6vectorINSt7__cxx114listIiSaIiEEESaIS3_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #1
  %9 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 5
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #1
  %10 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 6
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %10) #1
  %11 = getelementptr inbounds %"class.graph::HKGraph", ptr %3, i32 0, i32 7
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #1
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx114listIiSaIiEEESaIS3_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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 = { nounwind }

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

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTSN5graph7HKGraphE", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !12, i64 16, !16, i64 40, !16, i64 64, !16, i64 88}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTSSt6vectorINSt7__cxx114listIiSaIiEEESaIS3_EE", !13, i64 0}
!13 = !{!"_ZTSSt12_Vector_baseINSt7__cxx114listIiSaIiEEESaIS3_EE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseINSt7__cxx114listIiSaIiEEESaIS3_EE12_Vector_implE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseINSt7__cxx114listIiSaIiEEESaIS3_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!16 = !{!"_ZTSSt6vectorIiSaIiEE", !17, i64 0}
!17 = !{!"_ZTSSt12_Vector_baseIiSaIiEE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE12_Vector_implE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!20 = !{!10, !11, i64 4}
!21 = !{!10, !11, i64 8}
!22 = !{!10, !11, i64 12}


; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN5graph7HKGraphC2Ev(ptr noundef nonnull align 8 dereferenceable(112) %0) unnamed_addr #0 align 2 {
  store <4 x i32> <i32 0, i32 0, i32 0, i32 2147483647>, ptr %0, align 8, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @_ZNSt6vectorINSt7__cxx114listIiSaIiEEESaIS3_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #1
  %3 = getelementptr inbounds i8, ptr %0, i64 40
  tail call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #1
  %4 = getelementptr inbounds i8, ptr %0, i64 64
  tail call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #1
  %5 = getelementptr inbounds i8, ptr %0, i64 88
  tail call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #1
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorINSt7__cxx114listIiSaIiEEESaIS3_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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 = { 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"}


; Effective O3 passes: EarlyCSEPass,InstCombinePass,SLPVectorizerPass,SROAPass,TailCallElimPass