; LLVM IR from Ayon-SSP/The-SDE-Prep :: 2]_Algorithms/1]_Searching/C++ (binarySearch)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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) #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #2 personality ptr @__gxx_personality_v0 {
  %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 %"class.std::vector", align 8
  %13 = alloca ptr, align 8
  %14 = alloca i32, align 4
  %15 = alloca %"class.std::vector", align 8
  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
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %19, label %20

19:                                               ; preds = %4
  store i32 -1, ptr %5, align 4
  br label %66

20:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = load i32, ptr %9, align 4, !tbaa !9
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = sub nsw i32 %22, %23
  %25 = sdiv i32 %24, 2
  %26 = add nsw i32 %21, %25
  store i32 %26, ptr %10, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = load i32, ptr %10, 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) %0, i64 noundef %29) #3
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = icmp eq i32 %27, %31
  br i1 %32, label %33, label %35

33:                                               ; preds = %20
  %34 = load i32, ptr %10, align 4, !tbaa !9
  store i32 %34, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %64

35:                                               ; preds = %20
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = load i32, ptr %10, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %38) #3
  %40 = load i32, ptr %39, align 4, !tbaa !9
  %41 = icmp slt i32 %36, %40
  br i1 %41, label %42, label %53

42:                                               ; preds = %35
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %12, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %43 = load i32, ptr %7, align 4, !tbaa !9
  %44 = load i32, ptr %8, align 4, !tbaa !9
  %45 = load i32, ptr %10, align 4, !tbaa !9
  %46 = sub nsw i32 %45, 1
  %47 = invoke noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef %12, i32 noundef %43, i32 noundef %44, i32 noundef %46)
          to label %48 unwind label %49

48:                                               ; preds = %42
  store i32 %47, ptr %5, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  store i32 1, ptr %11, align 4
  br label %64

49:                                               ; preds = %42
  %50 = landingpad { ptr, i32 }
          cleanup
  %51 = extractvalue { ptr, i32 } %50, 0
  store ptr %51, ptr %13, align 8
  %52 = extractvalue { ptr, i32 } %50, 1
  store i32 %52, ptr %14, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  br label %65

53:                                               ; preds = %35
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %15, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %54 = load i32, ptr %7, align 4, !tbaa !9
  %55 = load i32, ptr %10, align 4, !tbaa !9
  %56 = add nsw i32 %55, 1
  %57 = load i32, ptr %9, align 4, !tbaa !9
  %58 = invoke noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef %15, i32 noundef %54, i32 noundef %56, i32 noundef %57)
          to label %59 unwind label %60

59:                                               ; preds = %53
  store i32 %58, ptr %5, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #3
  store i32 1, ptr %11, align 4
  br label %64

60:                                               ; preds = %53
  %61 = landingpad { ptr, i32 }
          cleanup
  %62 = extractvalue { ptr, i32 } %61, 0
  store ptr %62, ptr %13, align 8
  %63 = extractvalue { ptr, i32 } %61, 1
  store i32 %63, ptr %14, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #3
  br label %65

64:                                               ; preds = %59, %48, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %66

65:                                               ; preds = %60, %49
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %68

66:                                               ; preds = %64, %19
  %67 = load i32, ptr %5, align 4
  ret i32 %67

68:                                               ; preds = %65
  %69 = load ptr, ptr %13, align 8
  %70 = load i32, ptr %14, align 4
  %71 = insertvalue { ptr, i32 } poison, ptr %69, 0
  %72 = insertvalue { ptr, i32 } %71, i32 %70, 1
  resume { ptr, i32 } %72
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

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"

%"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 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 uwtable
define dso_local noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.std::vector", align 8
  %7 = icmp sgt i32 %2, %3
  br i1 %7, label %31, label %8

8:                                                ; preds = %4
  %9 = sub nsw i32 %3, %2
  %10 = sdiv i32 %9, 2
  %11 = add nsw i32 %10, %2
  %12 = sext i32 %11 to i64
  %13 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %12) #2
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp eq i32 %14, %1
  br i1 %15, label %31, label %16

16:                                               ; preds = %8
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %12) #2
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = icmp sgt i32 %18, %1
  br i1 %19, label %20, label %25

20:                                               ; preds = %16
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %21 = add nsw i32 %11, -1
  %22 = invoke noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef nonnull %5, i32 noundef %1, i32 noundef %2, i32 noundef %21)
          to label %.sink.split unwind label %23

23:                                               ; preds = %20
  %24 = landingpad { ptr, i32 }
          cleanup
  br label %30

25:                                               ; preds = %16
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %26 = add nsw i32 %11, 1
  %27 = invoke noundef i32 @_Z21binarySearchRecursiveSt6vectorIiSaIiEEiii(ptr noundef nonnull %6, i32 noundef %1, i32 noundef %26, i32 noundef %3)
          to label %.sink.split unwind label %28

28:                                               ; preds = %25
  %29 = landingpad { ptr, i32 }
          cleanup
  br label %30

30:                                               ; preds = %28, %23
  %.sink = phi ptr [ %6, %28 ], [ %5, %23 ]
  %.pn = phi { ptr, i32 } [ %29, %28 ], [ %24, %23 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.sink) #2
  resume { ptr, i32 } %.pn

.sink.split:                                      ; preds = %25, %20
  %.sink24 = phi ptr [ %5, %20 ], [ %6, %25 ]
  %.1.ph = phi i32 [ %22, %20 ], [ %27, %25 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.sink24) #2
  br label %31

31:                                               ; preds = %.sink.split, %8, %4
  %.1 = phi i32 [ -1, %4 ], [ %11, %8 ], [ %.1.ph, %.sink.split ]
  ret i32 %.1
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

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

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 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"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass