; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef (MIKE2)

; 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<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@.str = external hidden unnamed_addr constant [11 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca %"class.std::vector", align 8
  %5 = alloca i64, align 8
  %6 = alloca %"class.std::allocator", align 1
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca i64, align 8
  %13 = alloca i32, align 4
  %14 = alloca i64, align 8
  %15 = alloca i64, align 8
  %16 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #6
  %18 = load i64, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #6
  call void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  invoke void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %18, ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %19 unwind label %25

19:                                               ; preds = %0
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  store i64 0, ptr %9, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %34, %19
  %21 = load i64, ptr %9, align 8, !tbaa !5
  %22 = load i64, ptr %2, align 8, !tbaa !5
  %23 = icmp slt i64 %21, %22
  br i1 %23, label %29, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %41

25:                                               ; preds = %0
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %7, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %8, align 4
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %126

29:                                               ; preds = %20
  %30 = load i64, ptr %9, align 8, !tbaa !5
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %30) #6
  %32 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %31)
          to label %33 unwind label %37

33:                                               ; preds = %29
  br label %34

34:                                               ; preds = %33
  %35 = load i64, ptr %9, align 8, !tbaa !5
  %36 = add nsw i64 %35, 1
  store i64 %36, ptr %9, align 8, !tbaa !5
  br label %20, !llvm.loop !9

37:                                               ; preds = %29
  %38 = landingpad { ptr, i32 }
          cleanup
  %39 = extractvalue { ptr, i32 } %38, 0
  store ptr %39, ptr %7, align 8
  %40 = extractvalue { ptr, i32 } %38, 1
  store i32 %40, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %125

41:                                               ; preds = %24
  %42 = call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %43 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  store ptr %42, ptr %43, align 8
  %44 = call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  %45 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %44, ptr %45, align 8
  %46 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  %47 = load ptr, ptr %46, align 8
  %48 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  %49 = load ptr, ptr %48, align 8
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEEEvT_S7_(ptr %47, ptr %49)
          to label %50 unwind label %58

50:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %51 = load i64, ptr %2, align 8, !tbaa !5
  store i64 %51, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #6
  store i32 0, ptr %13, align 4, !tbaa !11
  br label %52

52:                                               ; preds = %85, %50
  %53 = load i32, ptr %13, align 4, !tbaa !11
  %54 = sext i32 %53 to i64
  %55 = load i64, ptr %2, align 8, !tbaa !5
  %56 = icmp slt i64 %54, %55
  br i1 %56, label %62, label %57

57:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #6
  br label %88

58:                                               ; preds = %41
  %59 = landingpad { ptr, i32 }
          cleanup
  %60 = extractvalue { ptr, i32 } %59, 0
  store ptr %60, ptr %7, align 8
  %61 = extractvalue { ptr, i32 } %59, 1
  store i32 %61, ptr %8, align 4
  br label %125

62:                                               ; preds = %52
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #6
  %63 = load i32, ptr %13, align 4, !tbaa !11
  %64 = sext i32 %63 to i64
  %65 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %64) #6
  %66 = load i64, ptr %65, align 8, !tbaa !5
  %67 = add nsw i64 %66, 1
  %68 = sdiv i64 %67, 2
  store i64 %68, ptr %14, align 8, !tbaa !5
  %69 = load i64, ptr %3, align 8, !tbaa !5
  %70 = load i64, ptr %14, align 8, !tbaa !5
  %71 = icmp sge i64 %69, %70
  br i1 %71, label %72, label %84

72:                                               ; preds = %62
  %73 = load i64, ptr %14, align 8, !tbaa !5
  %74 = load i32, ptr %13, align 4, !tbaa !11
  %75 = sext i32 %74 to i64
  %76 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %75) #6
  %77 = load i64, ptr %76, align 8, !tbaa !5
  %78 = sub nsw i64 %77, %73
  store i64 %78, ptr %76, align 8, !tbaa !5
  %79 = load i64, ptr %14, align 8, !tbaa !5
  %80 = load i64, ptr %3, align 8, !tbaa !5
  %81 = sub nsw i64 %80, %79
  store i64 %81, ptr %3, align 8, !tbaa !5
  %82 = load i64, ptr %12, align 8, !tbaa !5
  %83 = add nsw i64 %82, -1
  store i64 %83, ptr %12, align 8, !tbaa !5
  br label %84

84:                                               ; preds = %72, %62
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #6
  br label %85

85:                                               ; preds = %84
  %86 = load i32, ptr %13, align 4, !tbaa !11
  %87 = add nsw i32 %86, 1
  store i32 %87, ptr %13, align 4, !tbaa !11
  br label %52, !llvm.loop !13

88:                                               ; preds = %57
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #6
  store i64 0, ptr %15, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #6
  store i32 0, ptr %16, align 4, !tbaa !11
  br label %89

89:                                               ; preds = %112, %88
  %90 = load i32, ptr %16, align 4, !tbaa !11
  %91 = sext i32 %90 to i64
  %92 = load i64, ptr %2, align 8, !tbaa !5
  %93 = icmp slt i64 %91, %92
  br i1 %93, label %95, label %94

94:                                               ; preds = %89
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #6
  br label %115

95:                                               ; preds = %89
  %96 = load i64, ptr %3, align 8, !tbaa !5
  %97 = load i32, ptr %16, align 4, !tbaa !11
  %98 = sext i32 %97 to i64
  %99 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %98) #6
  %100 = load i64, ptr %99, align 8, !tbaa !5
  %101 = icmp sge i64 %96, %100
  br i1 %101, label %102, label %111

102:                                              ; preds = %95
  %103 = load i32, ptr %16, align 4, !tbaa !11
  %104 = sext i32 %103 to i64
  %105 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %104) #6
  %106 = load i64, ptr %105, align 8, !tbaa !5
  %107 = load i64, ptr %3, align 8, !tbaa !5
  %108 = sub nsw i64 %107, %106
  store i64 %108, ptr %3, align 8, !tbaa !5
  %109 = load i64, ptr %15, align 8, !tbaa !5
  %110 = add nsw i64 %109, 1
  store i64 %110, ptr %15, align 8, !tbaa !5
  br label %111

111:                                              ; preds = %102, %95
  br label %112

112:                                              ; preds = %111
  %113 = load i32, ptr %16, align 4, !tbaa !11
  %114 = add nsw i32 %113, 1
  store i32 %114, ptr %16, align 4, !tbaa !11
  br label %89, !llvm.loop !14

115:                                              ; preds = %94
  %116 = load i64, ptr %12, align 8, !tbaa !5
  %117 = load i64, ptr %15, align 8, !tbaa !5
  %118 = invoke i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %116, i64 noundef %117)
          to label %119 unwind label %121

119:                                              ; preds = %115
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  %120 = load i32, ptr %1, align 4
  ret i32 %120

121:                                              ; preds = %115
  %122 = landingpad { ptr, i32 }
          cleanup
  %123 = extractvalue { ptr, i32 } %122, 0
  store ptr %123, ptr %7, align 8
  %124 = extractvalue { ptr, i32 } %122, 1
  store i32 %124, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  br label %125

125:                                              ; preds = %121, %58, %37
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #6
  br label %126

126:                                              ; preds = %125, %25
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %127

127:                                              ; preds = %126
  %128 = load ptr, ptr %7, align 8
  %129 = load i32, ptr %8, align 4
  %130 = insertvalue { ptr, i32 } poison, ptr %128, 0
  %131 = insertvalue { ptr, i32 } %130, i32 %129, 1
  resume { ptr, i32 } %131
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEEEvT_S7_(ptr, ptr) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse 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 = { "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 = { 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 #4 = { 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 #5 = { inlinehint 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 #6 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !10}
!14 = distinct !{!14, !10}


; 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<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [11 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca i64, align 8
  %5 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #6
  %7 = load i64, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #6
  store i64 0, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #6
  call void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  invoke void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %7, ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %8 unwind label %13

8:                                                ; preds = %0
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #6
  %9 = load i64, ptr %1, align 8, !tbaa !5
  %10 = icmp sgt i64 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %8
  %11 = call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %12 = call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEEEvT_S7_(ptr %11, ptr %12)
          to label %20 unwind label %24

13:                                               ; preds = %0
  %14 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #6
  br label %54

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.02733 = phi i64 [ %17, %.lr.ph ], [ 0, %8 ]
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %.02733) #6
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %15)
  %17 = add nuw nsw i64 %.02733, 1
  %18 = load i64, ptr %1, align 8, !tbaa !5
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !9

20:                                               ; preds = %._crit_edge
  %21 = load i64, ptr %1, align 8, !tbaa !5
  %22 = icmp sgt i64 %21, 0
  br i1 %22, label %.lr.ph37, label %._crit_edge41

.preheader:                                       ; preds = %38
  %23 = icmp sgt i64 %39, 0
  br i1 %23, label %.lr.ph40, label %._crit_edge41

24:                                               ; preds = %._crit_edge
  %25 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %54

.lr.ph37:                                         ; preds = %20, %38
  %indvars.iv = phi i64 [ %indvars.iv.next, %38 ], [ 0, %20 ]
  %.02334 = phi i64 [ %.124, %38 ], [ %21, %20 ]
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #6
  %27 = load i64, ptr %26, align 8, !tbaa !5
  %28 = add nsw i64 %27, 1
  %29 = sdiv i64 %28, 2
  %30 = load i64, ptr %2, align 8, !tbaa !5
  %.not32 = icmp slt i64 %30, %29
  br i1 %.not32, label %38, label %31

31:                                               ; preds = %.lr.ph37
  %32 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #6
  %33 = load i64, ptr %32, align 8, !tbaa !5
  %34 = sub nsw i64 %33, %29
  store i64 %34, ptr %32, align 8, !tbaa !5
  %35 = load i64, ptr %2, align 8, !tbaa !5
  %36 = sub nsw i64 %35, %29
  store i64 %36, ptr %2, align 8, !tbaa !5
  %37 = add nsw i64 %.02334, -1
  br label %38

38:                                               ; preds = %31, %.lr.ph37
  %.124 = phi i64 [ %37, %31 ], [ %.02334, %.lr.ph37 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %39 = load i64, ptr %1, align 8, !tbaa !5
  %40 = icmp sgt i64 %39, %indvars.iv.next
  br i1 %40, label %.lr.ph37, label %.preheader, !llvm.loop !11

._crit_edge41:                                    ; preds = %51, %20, %.preheader
  %.023.lcssa48 = phi i64 [ %.124, %.preheader ], [ %21, %20 ], [ %.124, %51 ]
  %.021.lcssa = phi i64 [ 0, %.preheader ], [ 0, %20 ], [ %.1, %51 ]
  %41 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %.023.lcssa48, i64 noundef %.021.lcssa)
  call void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  ret i32 0

.lr.ph40:                                         ; preds = %.preheader, %51
  %indvars.iv44 = phi i64 [ %indvars.iv.next45, %51 ], [ 0, %.preheader ]
  %.02138 = phi i64 [ %.1, %51 ], [ 0, %.preheader ]
  %42 = load i64, ptr %2, align 8, !tbaa !5
  %43 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv44) #6
  %44 = load i64, ptr %43, align 8, !tbaa !5
  %.not = icmp slt i64 %42, %44
  br i1 %.not, label %51, label %45

45:                                               ; preds = %.lr.ph40
  %46 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv44) #6
  %47 = load i64, ptr %46, align 8, !tbaa !5
  %48 = load i64, ptr %2, align 8, !tbaa !5
  %49 = sub nsw i64 %48, %47
  store i64 %49, ptr %2, align 8, !tbaa !5
  %50 = add nsw i64 %.02138, 1
  br label %51

51:                                               ; preds = %.lr.ph40, %45
  %.1 = phi i64 [ %50, %45 ], [ %.02138, %.lr.ph40 ]
  %indvars.iv.next45 = add nuw nsw i64 %indvars.iv44, 1
  %52 = load i64, ptr %1, align 8, !tbaa !5
  %53 = icmp sgt i64 %52, %indvars.iv.next45
  br i1 %53, label %.lr.ph40, label %._crit_edge41, !llvm.loop !12

54:                                               ; preds = %24, %13
  %.pn = phi { ptr, i32 } [ %25, %24 ], [ %14, %13 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIxEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEEC2EmRKxRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEEEvT_S7_(ptr, ptr) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIxSaIxEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIxED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

attributes #0 = { mustprogress norecurse 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 = { nofree nounwind "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 = { 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 #4 = { 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 #5 = { inlinehint 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 #6 = { 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 = !{!"long long", !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}
!12 = distinct !{!12, !10}


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