; LLVM IR from xirc/cp-algorithm :: atcoder/abc190/F/main.ll (Z5msortRSt6vectorIiSaIiEERl)

; 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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5mergeRKSt6vectorIiSaIiEES3_RS1_Rl(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #0

; 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 i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 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) #0 align 2

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) #2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca %"class.std::vector", align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #3
  %15 = trunc i64 %14 to i32
  store i32 %15, ptr %5, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp eq i32 %16, 1
  br i1 %17, label %18, label %19

18:                                               ; preds = %2
  store i32 1, ptr %6, align 4
  br label %67

19:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #3
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #3
  call void @llvm.lifetime.start.p0(i64 24, ptr %8) #3
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %32, %19
  %21 = load i32, ptr %9, align 4, !tbaa !9
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = sdiv i32 %22, 2
  %24 = icmp slt i32 %21, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %20
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %39

26:                                               ; preds = %20
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %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
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 4 dereferenceable(4) %30)
          to label %31 unwind label %35

31:                                               ; preds = %26
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %9, align 4, !tbaa !9
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %9, align 4, !tbaa !9
  br label %20, !llvm.loop !11

35:                                               ; preds = %26
  %36 = landingpad { ptr, i32 }
          cleanup
  %37 = extractvalue { ptr, i32 } %36, 0
  store ptr %37, ptr %10, align 8
  %38 = extractvalue { ptr, i32 } %36, 1
  store i32 %38, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %74

39:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = sdiv i32 %40, 2
  store i32 %41, ptr %12, align 4, !tbaa !9
  br label %42

42:                                               ; preds = %53, %39
  %43 = load i32, ptr %12, align 4, !tbaa !9
  %44 = load i32, ptr %5, align 4, !tbaa !9
  %45 = icmp slt i32 %43, %44
  br i1 %45, label %47, label %46

46:                                               ; preds = %42
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %60

47:                                               ; preds = %42
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  %49 = load i32, ptr %12, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %48, i64 noundef %50) #3
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 4 dereferenceable(4) %51)
          to label %52 unwind label %56

52:                                               ; preds = %47
  br label %53

53:                                               ; preds = %52
  %54 = load i32, ptr %12, align 4, !tbaa !9
  %55 = add nsw i32 %54, 1
  store i32 %55, ptr %12, align 4, !tbaa !9
  br label %42, !llvm.loop !13

56:                                               ; preds = %47
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %10, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %74

60:                                               ; preds = %46
  %61 = load ptr, ptr %4, align 8, !tbaa !5
  invoke void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(8) %61)
          to label %62 unwind label %70

62:                                               ; preds = %60
  %63 = load ptr, ptr %4, align 8, !tbaa !5
  invoke void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 8 dereferenceable(8) %63)
          to label %64 unwind label %70

64:                                               ; preds = %62
  %65 = load ptr, ptr %3, align 8, !tbaa !5
  %66 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_Z5mergeRKSt6vectorIiSaIiEES3_RS1_Rl(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 8 dereferenceable(24) %65, ptr noundef nonnull align 8 dereferenceable(8) %66)
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #3
  store i32 0, ptr %6, align 4
  br label %67

67:                                               ; preds = %64, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %68 = load i32, ptr %6, align 4
  switch i32 %68, label %80 [
    i32 0, label %69
    i32 1, label %69
  ]

69:                                               ; preds = %67, %67
  ret void

70:                                               ; preds = %62, %60
  %71 = landingpad { ptr, i32 }
          cleanup
  %72 = extractvalue { ptr, i32 } %71, 0
  store ptr %72, ptr %10, align 8
  %73 = extractvalue { ptr, i32 } %71, 1
  store i32 %73, ptr %11, align 4
  br label %74

74:                                               ; preds = %70, %56, %35
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %75

75:                                               ; preds = %74
  %76 = load ptr, ptr %10, align 8
  %77 = load i32, ptr %11, align 4
  %78 = insertvalue { ptr, i32 } poison, ptr %76, 0
  %79 = insertvalue { ptr, i32 } %78, i32 %77, 1
  resume { ptr, i32 } %79

80:                                               ; preds = %67
  unreachable
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

declare i32 @__gxx_personality_v0(...)

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 = { 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}
!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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5mergeRKSt6vectorIiSaIiEES3_RS1_Rl(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

; Function Attrs: mustprogress 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 i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 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 #0 align 2

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

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::vector", align 8
  %5 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %6 = trunc i64 %5 to i32
  %7 = icmp eq i32 %6, 1
  br i1 %7, label %24, label %8

8:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #3
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #3
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #3
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  %9 = sdiv i32 %6, 2
  %10 = icmp sgt i32 %6, 1
  br i1 %10, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %8
  %wide.trip.count = zext nneg i32 %9 to i64
  br label %.lr.ph

.lr.ph27.preheader:                               ; preds = %14
  %11 = zext nneg i32 %9 to i64
  %12 = and i64 %5, 2147483647
  br label %.lr.ph27

.lr.ph:                                           ; preds = %.lr.ph.preheader, %14
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %14 ]
  %13 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #3
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %14 unwind label %15

14:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.lr.ph27.preheader, label %.lr.ph, !llvm.loop !5

15:                                               ; preds = %.lr.ph
  %16 = landingpad { ptr, i32 }
          cleanup
  br label %27

._crit_edge:                                      ; preds = %18, %8
  invoke void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(8) %1)
          to label %22 unwind label %25

.lr.ph27:                                         ; preds = %.lr.ph27.preheader, %18
  %indvars.iv29 = phi i64 [ %11, %.lr.ph27.preheader ], [ %indvars.iv.next30, %18 ]
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv29) #3
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(4) %17)
          to label %18 unwind label %20

18:                                               ; preds = %.lr.ph27
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %19 = icmp ult i64 %indvars.iv.next30, %12
  br i1 %19, label %.lr.ph27, label %._crit_edge, !llvm.loop !7

20:                                               ; preds = %.lr.ph27
  %21 = landingpad { ptr, i32 }
          cleanup
  br label %27

22:                                               ; preds = %._crit_edge
  invoke void @_Z5msortRSt6vectorIiSaIiEERl(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(8) %1)
          to label %23 unwind label %25

23:                                               ; preds = %22
  call void @_Z5mergeRKSt6vectorIiSaIiEES3_RS1_Rl(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %1)
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #3
  br label %24

24:                                               ; preds = %2, %23
  ret void

25:                                               ; preds = %22, %._crit_edge
  %26 = landingpad { ptr, i32 }
          cleanup
  br label %27

27:                                               ; preds = %25, %20, %15
  %.pn = phi { ptr, i32 } [ %16, %15 ], [ %21, %20 ], [ %26, %25 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #3
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = distinct !{!7, !6}


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