; LLVM IR from UtkarshPathrabe/Competitive-Coding :: Model Algorithms/Statistics/Selection.ll (Z6SelectRSt6vectorIiSaIiEEiii)

; 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: 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 nounwind uwtable
declare dso_local noundef i32 @_Z9PartitionRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) #1

; 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) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z6SelectRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #2 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = icmp eq i32 %13, %14
  br i1 %15, label %16, label %22

16:                                               ; preds = %4
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %17, i64 noundef %19) #3
  %21 = load i32, ptr %20, align 4, !tbaa !9
  store i32 %21, ptr %5, align 4
  br label %59

22:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = load i32, ptr %8, align 4, !tbaa !9
  %26 = call noundef i32 @_Z9PartitionRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24) %23, i32 noundef %24, i32 noundef %25)
  store i32 %26, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %27 = load i32, ptr %10, align 4, !tbaa !9
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = sub nsw i32 %27, %28
  store i32 %29, ptr %11, align 4, !tbaa !9
  %30 = load i32, ptr %9, align 4, !tbaa !9
  %31 = load i32, ptr %11, align 4, !tbaa !9
  %32 = icmp eq i32 %30, %31
  br i1 %32, label %33, label %39

33:                                               ; preds = %22
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = load i32, ptr %10, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %34, i64 noundef %36) #3
  %38 = load i32, ptr %37, align 4, !tbaa !9
  store i32 %38, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %58

39:                                               ; preds = %22
  %40 = load i32, ptr %9, align 4, !tbaa !9
  %41 = load i32, ptr %11, align 4, !tbaa !9
  %42 = icmp slt i32 %40, %41
  br i1 %42, label %43, label %50

43:                                               ; preds = %39
  %44 = load ptr, ptr %6, align 8, !tbaa !5
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = sub nsw i32 %46, 1
  %48 = load i32, ptr %9, align 4, !tbaa !9
  %49 = call noundef i32 @_Z6SelectRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %44, i32 noundef %45, i32 noundef %47, i32 noundef %48)
  store i32 %49, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %58

50:                                               ; preds = %39
  %51 = load ptr, ptr %6, align 8, !tbaa !5
  %52 = load i32, ptr %10, align 4, !tbaa !9
  %53 = load i32, ptr %8, align 4, !tbaa !9
  %54 = load i32, ptr %9, align 4, !tbaa !9
  %55 = load i32, ptr %11, align 4, !tbaa !9
  %56 = sub nsw i32 %54, %55
  %57 = call noundef i32 @_Z6SelectRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %51, i32 noundef %52, i32 noundef %53, i32 noundef %56)
  store i32 %57, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %58

58:                                               ; preds = %50, %43, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %59

59:                                               ; preds = %58, %16
  %60 = load i32, ptr %5, align 4
  ret i32 %60
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #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}


; 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
declare dso_local noundef i32 @_Z9PartitionRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #0

; 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 #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z6SelectRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = icmp eq i32 %1, %2
  br i1 %5, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %tailrecurse.outer
  %.tr31.ph42 = phi i32 [ %14, %tailrecurse.outer ], [ %3, %4 ]
  %.tr30.ph41 = phi i32 [ %.tr3038, %tailrecurse.outer ], [ %2, %4 ]
  %.tr29.ph40 = phi i32 [ %7, %tailrecurse.outer ], [ %1, %4 ]
  br label %6

6:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr3038 = phi i32 [ %.tr30.ph41, %.lr.ph ], [ %12, %tailrecurse ]
  %7 = tail call noundef i32 @_Z9PartitionRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %.tr29.ph40, i32 noundef %.tr3038)
  %8 = sub nsw i32 %7, %.tr29.ph40
  %9 = icmp eq i32 %8, %.tr31.ph42
  br i1 %9, label %tailrecurse.outer._crit_edge, label %10

10:                                               ; preds = %6
  %11 = icmp sgt i32 %8, %.tr31.ph42
  br i1 %11, label %tailrecurse, label %tailrecurse.outer

tailrecurse:                                      ; preds = %10
  %12 = add nsw i32 %7, -1
  %13 = icmp eq i32 %.tr29.ph40, %12
  br i1 %13, label %tailrecurse.outer._crit_edge, label %6

tailrecurse.outer:                                ; preds = %10
  %14 = sub nsw i32 %.tr31.ph42, %8
  %15 = icmp eq i32 %7, %.tr3038
  br i1 %15, label %tailrecurse.outer._crit_edge, label %.lr.ph

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %6, %tailrecurse, %4
  %.lcssa57.sink = phi i32 [ %1, %4 ], [ %.tr29.ph40, %tailrecurse ], [ %7, %6 ], [ %.tr3038, %tailrecurse.outer ]
  %16 = sext i32 %.lcssa57.sink to i64
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %16) #1
  %.1 = load i32, ptr %17, align 4, !tbaa !5
  ret i32 %.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 = { 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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass