; LLVM IR from sunkafei/xcpc-algorithm-templates :: 算法/数据结构/可持久化整数集合.ll (Z5countSt6vectorIiSaIiEES1_i)

; 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"

@len = external dso_local global i32, align 4
@info = external dso_local global [210000 x i32], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z7rankingi(i32 noundef) #0

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4leftRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5rightRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5valueRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5countSt6vectorIiSaIiEES1_i(ptr noundef %0, ptr noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %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 %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 1, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %13 = load i32, ptr @len, align 4, !tbaa !9
  store i32 %13, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = call noundef i32 @_Z7rankingi(i32 noundef %14)
  store i32 %15, ptr %10, align 4, !tbaa !9
  %16 = load i32, ptr %10, align 4, !tbaa !9
  %17 = load i32, ptr @len, align 4, !tbaa !9
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %26, label %19

19:                                               ; preds = %3
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [210000 x i32], ptr @info, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = icmp ne i32 %23, %24
  br i1 %25, label %26, label %27

26:                                               ; preds = %19, %3
  store i32 0, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %48

27:                                               ; preds = %19
  br label %28

28:                                               ; preds = %45, %27
  %29 = load i32, ptr %8, align 4, !tbaa !9
  %30 = load i32, ptr %9, align 4, !tbaa !9
  %31 = icmp slt i32 %29, %30
  br i1 %31, label %32, label %46

32:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = add nsw i32 %33, %34
  %36 = sdiv i32 %35, 2
  store i32 %36, ptr %12, align 4, !tbaa !9
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = load i32, ptr %12, align 4, !tbaa !9
  %39 = icmp sle i32 %37, %38
  br i1 %39, label %40, label %42

40:                                               ; preds = %32
  call void @_Z4leftRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  %41 = load i32, ptr %12, align 4, !tbaa !9
  store i32 %41, ptr %9, align 4, !tbaa !9
  br label %45

42:                                               ; preds = %32
  call void @_Z5rightRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  %43 = load i32, ptr %12, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %8, align 4, !tbaa !9
  br label %45

45:                                               ; preds = %42, %40
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %28, !llvm.loop !11

46:                                               ; preds = %28
  %47 = call noundef i32 @_Z5valueRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  store i32 %47, ptr %4, align 4
  store i32 1, ptr %11, align 4
  br label %48

48:                                               ; preds = %46, %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %49 = load i32, ptr %4, align 4
  ret i32 %49
}

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"

@len = external dso_local local_unnamed_addr global i32, align 4
@info = external dso_local local_unnamed_addr global [210000 x i32], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z7rankingi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4leftRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5rightRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5valueRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5countSt6vectorIiSaIiEES1_i(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr @len, align 4, !tbaa !5
  %5 = tail call noundef i32 @_Z7rankingi(i32 noundef %2)
  %6 = load i32, ptr @len, align 4, !tbaa !5
  %7 = icmp sgt i32 %5, %6
  br i1 %7, label %21, label %8

8:                                                ; preds = %3
  %9 = sext i32 %5 to i64
  %10 = getelementptr inbounds [210000 x i32], ptr @info, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not = icmp eq i32 %11, %2
  br i1 %.not, label %.preheader, label %21

.preheader:                                       ; preds = %8
  %12 = icmp sgt i32 %4, 1
  br i1 %12, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.preheader, %18
  %.01321 = phi i32 [ %.1, %18 ], [ 1, %.preheader ]
  %.01420 = phi i32 [ %.115, %18 ], [ %4, %.preheader ]
  %13 = add nuw nsw i32 %.01321, %.01420
  %14 = lshr i32 %13, 1
  %.not19 = icmp sgt i32 %5, %14
  br i1 %.not19, label %16, label %15

15:                                               ; preds = %.lr.ph
  tail call void @_Z4leftRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  br label %18

16:                                               ; preds = %.lr.ph
  tail call void @_Z5rightRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  %17 = add nuw nsw i32 %14, 1
  br label %18

18:                                               ; preds = %16, %15
  %.115 = phi i32 [ %14, %15 ], [ %.01420, %16 ]
  %.1 = phi i32 [ %.01321, %15 ], [ %17, %16 ]
  %19 = icmp slt i32 %.1, %.115
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %18, %.preheader
  %20 = tail call noundef i32 @_Z5valueRSt6vectorIiSaIiEES2_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1)
  br label %21

21:                                               ; preds = %3, %8, %._crit_edge
  %.0 = phi i32 [ %20, %._crit_edge ], [ 0, %8 ], [ 0, %3 ]
  ret i32 %.0
}

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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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