; LLVM IR from ahampriyanshu/algo-ds-101 :: Algorithms/Hashing/Open Addressing/quadraticProbingHashTable.ll (Z4findi)

; 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"

%struct.Entry = type { i32 }

@notPresent = external dso_local global i32, align 4
@table = external dso_local global ptr, 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 @_Z14quadraticProbeib(i32 noundef, i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #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 @_Z4findi(i32 noundef %0) #1 {
  %2 = alloca %struct.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 @_Z14quadraticProbeib(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 @notPresent, align 4, !tbaa !5
  %10 = icmp eq i32 %8, %9
  br i1 %10, label %11, label %13

11:                                               ; preds = %1
  %12 = load i32, ptr @notPresent, align 4, !tbaa !5
  call void @_ZN5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %2, i32 noundef %12)
  store i32 1, ptr %5, align 4
  br label %18

13:                                               ; preds = %1
  %14 = load ptr, ptr @table, align 8, !tbaa !9
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds %struct.Entry, ptr %14, i64 %16
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %2, ptr align 4 %17, i64 4, i1 false), !tbaa.struct !11
  store i32 1, ptr %5, align 4
  br label %18

18:                                               ; preds = %13, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  %19 = getelementptr inbounds %struct.Entry, ptr %2, i32 0, i32 0
  %20 = load i32, ptr %19, align 4
  ret i32 %20
}

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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{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"

%struct.Entry = type { i32 }

@notPresent = external dso_local local_unnamed_addr global i32, align 4
@table = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z14quadraticProbeib(i32 noundef, i1 noundef zeroext) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local i32 @_Z4findi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = alloca %struct.Entry, align 4
  %3 = tail call noundef i32 @_Z14quadraticProbeib(i32 noundef %0, i1 noundef zeroext true)
  %4 = load i32, ptr @notPresent, align 4, !tbaa !5
  %5 = icmp eq i32 %3, %4
  br i1 %5, label %6, label %7

6:                                                ; preds = %1
  call void @_ZN5EntryC2Ei(ptr noundef nonnull align 4 dereferenceable(4) %2, i32 noundef %3)
  br label %11

7:                                                ; preds = %1
  %8 = load ptr, ptr @table, align 8, !tbaa !9
  %9 = sext i32 %3 to i64
  %10 = getelementptr inbounds %struct.Entry, ptr %8, i64 %9
  br label %11

11:                                               ; preds = %7, %6
  %.in = phi ptr [ %10, %7 ], [ %2, %6 ]
  %12 = load i32, ptr %.in, align 4
  ret i32 %12
}

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" }

!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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass