; LLVM IR from TLE-MEC/Hack-CP-DSA :: InterviewBit/Find Duplicate in Array/solution.ll (Z14repeatedNumberRKSt6vectorIiSaIiEE)

; 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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z14repeatedNumberRKSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef 0) #2
  %9 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %9, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %11, i64 noundef 0) #2
  %13 = load i32, ptr %12, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %10, i64 noundef %14) #2
  %16 = load i32, ptr %15, align 4, !tbaa !9
  store i32 %16, ptr %5, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %21, %1
  %18 = load i32, ptr %4, align 4, !tbaa !9
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = icmp ne i32 %18, %19
  br i1 %20, label %21, label %36

21:                                               ; preds = %17
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %22, i64 noundef %24) #2
  %26 = load i32, ptr %25, align 4, !tbaa !9
  store i32 %26, ptr %4, align 4, !tbaa !9
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %28, i64 noundef %30) #2
  %32 = load i32, ptr %31, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %27, i64 noundef %33) #2
  %35 = load i32, ptr %34, align 4, !tbaa !9
  store i32 %35, ptr %5, align 4, !tbaa !9
  br label %17, !llvm.loop !11

36:                                               ; preds = %17
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %37

37:                                               ; preds = %41, %36
  %38 = load i32, ptr %4, align 4, !tbaa !9
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = icmp ne i32 %38, %39
  br i1 %40, label %41, label %52

41:                                               ; preds = %37
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = load i32, ptr %4, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %42, i64 noundef %44) #2
  %46 = load i32, ptr %45, align 4, !tbaa !9
  store i32 %46, ptr %4, align 4, !tbaa !9
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  %48 = load i32, ptr %5, align 4, !tbaa !9
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %47, i64 noundef %49) #2
  %51 = load i32, ptr %50, align 4, !tbaa !9
  store i32 %51, ptr %5, align 4, !tbaa !9
  br label %37, !llvm.loop !13

52:                                               ; preds = %37
  %53 = load i32, ptr %4, align 4, !tbaa !9
  %54 = icmp eq i32 %53, 0
  br i1 %54, label %55, label %56

55:                                               ; preds = %52
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %58

56:                                               ; preds = %52
  %57 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %57, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %58

58:                                               ; preds = %56, %55
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %59 = load i32, ptr %2, align 4
  ret i32 %59
}

; 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 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !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 noundef range(i32 1, 0) i32 @_Z14repeatedNumberRKSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #0 {
  %2 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #1
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #1
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = sext i32 %5 to i64
  %7 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %6) #1
  %.022 = load i32, ptr %7, align 4, !tbaa !5
  %.not23 = icmp eq i32 %3, %.022
  br i1 %.not23, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %1
  %.018.lcssa = phi i32 [ %3, %1 ], [ %10, %.lr.ph ]
  %.not2126 = icmp eq i32 %.018.lcssa, 0
  br i1 %.not2126, label %._crit_edge.thread, label %.lr.ph29

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.025 = phi i32 [ %.0, %.lr.ph ], [ %.022, %1 ]
  %.01824 = phi i32 [ %10, %.lr.ph ], [ %3, %1 ]
  %8 = sext i32 %.01824 to i64
  %9 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %8) #1
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = sext i32 %.025 to i64
  %12 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %11) #1
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %14) #1
  %.0 = load i32, ptr %15, align 4, !tbaa !5
  %.not = icmp eq i32 %10, %.0
  br i1 %.not, label %.preheader, label %.lr.ph, !llvm.loop !9

.lr.ph29:                                         ; preds = %.preheader, %.lr.ph29
  %.128 = phi i32 [ %21, %.lr.ph29 ], [ 0, %.preheader ]
  %.11927 = phi i32 [ %.fr, %.lr.ph29 ], [ %.018.lcssa, %.preheader ]
  %16 = sext i32 %.11927 to i64
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %16) #1
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %.fr = freeze i32 %18
  %19 = sext i32 %.128 to i64
  %20 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %19) #1
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %.not21 = icmp eq i32 %.fr, %21
  br i1 %.not21, label %._crit_edge, label %.lr.ph29, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph29
  %22 = icmp eq i32 %.fr, 0
  br i1 %22, label %._crit_edge.thread, label %23

._crit_edge.thread:                               ; preds = %.preheader, %._crit_edge
  br label %23

23:                                               ; preds = %._crit_edge, %._crit_edge.thread
  %24 = phi i32 [ -1, %._crit_edge.thread ], [ %.fr, %._crit_edge ]
  ret i32 %24
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) 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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass