; LLVM IR from imteekay/algorithms :: competitive-programming/uri (easy_problem_from_rujia_liu_2)

; 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 uwtable
define dso_local noundef i32 @_Z16getKthOccurrenceRSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEii(ptr noundef nonnull align 8 dereferenceable(48) %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %33, %3
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48) %14, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %16 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #3
  %17 = icmp ult i64 %13, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %11
  store i32 2, ptr %10, align 4
  br label %36

19:                                               ; preds = %11
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %8, align 4, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = load i32, ptr %6, align 4, !tbaa !9
  %24 = icmp eq i32 %22, %23
  br i1 %24, label %25, label %32

25:                                               ; preds = %19
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48) %26, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %28 = load i32, ptr %9, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %27, i64 noundef %29) #3
  %31 = load i32, ptr %30, align 4, !tbaa !9
  store i32 %31, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %36

32:                                               ; preds = %19
  br label %33

33:                                               ; preds = %32
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

36:                                               ; preds = %25, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  %37 = load i32, ptr %10, align 4
  switch i32 %37, label %39 [
    i32 2, label %38
  ]

38:                                               ; preds = %36
  store i32 0, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %39

39:                                               ; preds = %38, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %40 = load i32, ptr %4, align 4
  ret i32 %40
}

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 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 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 = { 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 = { 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"}


; 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 uwtable
define dso_local noundef i32 @_Z16getKthOccurrenceRSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEii(ptr noundef nonnull align 8 dereferenceable(48) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca i32, align 4
  store i32 %2, ptr %4, align 4, !tbaa !5
  %5 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %6 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #2
  %.not15.not = icmp eq i64 %6, 0
  br i1 %.not15.not, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %7 = add i32 %1, -1
  %8 = zext i32 %7 to i64
  br label %.lr.ph

9:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %11 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #2
  %.not = icmp ugt i64 %11, %indvars.iv.next
  br i1 %.not, label %.lr.ph, label %.loopexit, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph.preheader, %9
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %9 ]
  %exitcond = icmp eq i64 %indvars.iv, %8
  br i1 %exitcond, label %12, label %9

12:                                               ; preds = %.lr.ph
  %13 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %8) #2
  %15 = load i32, ptr %14, align 4, !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %9, %3, %12
  %spec.select = phi i32 [ %15, %12 ], [ 0, %3 ], [ 0, %9 ]
  ret i32 %spec.select
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt3mapIiSt6vectorIiSaIiEESt4lessIiESaISt4pairIKiS2_EEEixERS6_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 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 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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