; LLVM IR from TheAlgorithms/C-Plus-Plus :: hashing/quadratic_probing_hash_table.ll (ZN17quadratic_probing4findEi)

; 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<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl" }
%"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl" = type { %"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl_data" }
%"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.quadratic_probing::Entry" = type { i32 }

@_ZN17quadratic_probing10notPresentE = external dso_local global i32, align 4
@_ZN17quadratic_probing5tableE = external dso_local global %"class.std::vector", align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN17quadratic_probing14quadraticProbeEib(i32 noundef, i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN17quadratic_probing5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIN17quadratic_probing5EntryESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #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) #3

; Function Attrs: mustprogress uwtable
define dso_local i32 @_ZN17quadratic_probing4findEi(i32 noundef %0) #1 {
  %2 = alloca %"struct.quadratic_probing::Entry", align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = call noundef i32 @_ZN17quadratic_probing14quadraticProbeEib(i32 noundef %6, i1 noundef zeroext true)
  store i32 %7, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr @_ZN17quadratic_probing10notPresentE, align 4, !tbaa !5
  %10 = icmp eq i32 %8, %9
  br i1 %10, label %11, label %13

11:                                               ; preds = %1
  %12 = load i32, ptr @_ZN17quadratic_probing10notPresentE, align 4, !tbaa !5
  call void @_ZN17quadratic_probing5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %2, i32 noundef %12)
  store i32 1, ptr %5, align 4
  br label %17

13:                                               ; preds = %1
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIN17quadratic_probing5EntryESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @_ZN17quadratic_probing5tableE, i64 noundef %15) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %2, ptr align 4 %16, i64 4, i1 false), !tbaa.struct !9
  store i32 1, ptr %5, align 4
  br label %17

17:                                               ; preds = %13, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  %18 = getelementptr inbounds %"struct.quadratic_probing::Entry", ptr %2, i32 0, i32 0
  %19 = load i32, ptr %18, align 4
  ret i32 %19
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{i64 0, i64 4, !5}


; 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<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl" }
%"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl" = type { %"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl_data" }
%"struct.std::_Vector_base<quadratic_probing::Entry, std::allocator<quadratic_probing::Entry>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.quadratic_probing::Entry" = type { i32 }

@_ZN17quadratic_probing10notPresentE = external dso_local local_unnamed_addr global i32, align 4
@_ZN17quadratic_probing5tableE = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN17quadratic_probing14quadraticProbeEib(i32 noundef, i1 noundef zeroext) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN17quadratic_probing5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIN17quadratic_probing5EntryESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local i32 @_ZN17quadratic_probing4findEi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = alloca %"struct.quadratic_probing::Entry", align 4
  %3 = tail call noundef i32 @_ZN17quadratic_probing14quadraticProbeEib(i32 noundef %0, i1 noundef zeroext true)
  %4 = load i32, ptr @_ZN17quadratic_probing10notPresentE, align 4, !tbaa !5
  %5 = icmp eq i32 %3, %4
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  call void @_ZN17quadratic_probing5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %2, i32 noundef %3)
  br label %10

7:                                                ; preds = %1
  %8 = sext i32 %3 to i64
  %9 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIN17quadratic_probing5EntryESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @_ZN17quadratic_probing5tableE, i64 noundef %8) #2
  br label %10

10:                                               ; preds = %7, %6
  %.in = phi ptr [ %9, %7 ], [ %2, %6 ]
  %11 = load i32, ptr %.in, align 4
  ret i32 %11
}

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 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 #2 = { 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: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass