; LLVM IR from div-bargali/Data-Structures-and-Algorithms :: C++/Algorithms/Graph-Algorithms/Cycle_detection_directed_graph.ll (Z12isCyclicUtiliPbS_)

; 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 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@adjList = external dso_local global [10 x %"class.std::vector"], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z12isCyclicUtiliPbS_(i32 noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca i1, align 1
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  %13 = load ptr, ptr %6, align 8, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !11, !range !13, !noundef !14
  %18 = trunc i8 %17 to i1
  %19 = zext i1 %18 to i32
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %21, label %75

21:                                               ; preds = %3
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i8, ptr %22, i64 %24
  store i8 1, ptr %25, align 1, !tbaa !11
  %26 = load ptr, ptr %7, align 8, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i8, ptr %26, i64 %28
  store i8 1, ptr %29, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [10 x %"class.std::vector"], ptr @adjList, i64 0, i64 %31
  store ptr %32, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %33 = load ptr, ptr %8, align 8, !tbaa !9
  %34 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %33) #4
  %35 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %34, ptr %35, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %36 = load ptr, ptr %8, align 8, !tbaa !9
  %37 = call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %36) #4
  %38 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  store ptr %37, ptr %38, align 8
  br label %39

39:                                               ; preds = %70, %21
  %40 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull align 8 dereferenceable(8) %10) #4
  br i1 %40, label %42, label %41

41:                                               ; preds = %39
  store i32 2, ptr %11, align 4
  br label %72

42:                                               ; preds = %39
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %43 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %9) #4
  %44 = load i32, ptr %43, align 4, !tbaa !5
  store i32 %44, ptr %12, align 4, !tbaa !5
  %45 = load ptr, ptr %6, align 8, !tbaa !9
  %46 = load i32, ptr %12, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds i8, ptr %45, i64 %47
  %49 = load i8, ptr %48, align 1, !tbaa !11, !range !13, !noundef !14
  %50 = trunc i8 %49 to i1
  br i1 %50, label %57, label %51

51:                                               ; preds = %42
  %52 = load i32, ptr %12, align 4, !tbaa !5
  %53 = load ptr, ptr %6, align 8, !tbaa !9
  %54 = load ptr, ptr %7, align 8, !tbaa !9
  %55 = call noundef zeroext i1 @_Z12isCyclicUtiliPbS_(i32 noundef %52, ptr noundef %53, ptr noundef %54)
  br i1 %55, label %56, label %57

56:                                               ; preds = %51
  store i1 true, ptr %4, align 1
  store i32 1, ptr %11, align 4
  br label %67

57:                                               ; preds = %51, %42
  %58 = load ptr, ptr %7, align 8, !tbaa !9
  %59 = load i32, ptr %12, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds i8, ptr %58, i64 %60
  %62 = load i8, ptr %61, align 1, !tbaa !11, !range !13, !noundef !14
  %63 = trunc i8 %62 to i1
  br i1 %63, label %64, label %65

64:                                               ; preds = %57
  store i1 true, ptr %4, align 1
  store i32 1, ptr %11, align 4
  br label %67

65:                                               ; preds = %57
  br label %66

66:                                               ; preds = %65
  store i32 0, ptr %11, align 4
  br label %67

67:                                               ; preds = %66, %64, %56
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  %68 = load i32, ptr %11, align 4
  switch i32 %68, label %72 [
    i32 0, label %69
  ]

69:                                               ; preds = %67
  br label %70

70:                                               ; preds = %69
  %71 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %9) #4
  br label %39

72:                                               ; preds = %67, %41
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %73 = load i32, ptr %11, align 4
  switch i32 %73, label %82 [
    i32 2, label %74
    i32 1, label %80
  ]

74:                                               ; preds = %72
  br label %75

75:                                               ; preds = %74, %3
  %76 = load ptr, ptr %7, align 8, !tbaa !9
  %77 = load i32, ptr %5, align 4, !tbaa !5
  %78 = sext i32 %77 to i64
  %79 = getelementptr inbounds i8, ptr %76, i64 %78
  store i8 0, ptr %79, align 1, !tbaa !11
  store i1 false, ptr %4, align 1
  br label %80

80:                                               ; preds = %75, %72
  %81 = load i1, ptr %4, align 1
  ret i1 %81

82:                                               ; preds = %72
  unreachable
}

; 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 ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 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 nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

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 = { inlinehint 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 = { 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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}


; 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 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@adjList = external dso_local global [10 x %"class.std::vector"], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z12isCyclicUtiliPbS_(i32 noundef %0, ptr nocapture noundef %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = sext i32 %0 to i64
  %7 = getelementptr inbounds i8, ptr %1, i64 %6
  %8 = load i8, ptr %7, align 1, !tbaa !5, !range !9, !noundef !10
  %9 = icmp eq i8 %8, 0
  br i1 %9, label %10, label %31

10:                                               ; preds = %3
  store i8 1, ptr %7, align 1, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %2, i64 %6
  store i8 1, ptr %11, align 1, !tbaa !5
  %12 = getelementptr inbounds [10 x %"class.std::vector"], ptr @adjList, i64 0, i64 %6
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %13 = tail call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  store ptr %13, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %14 = tail call ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  store ptr %14, ptr %5, align 8
  %15 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  br i1 %15, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %10, %28
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  %17 = load i32, ptr %16, align 4, !tbaa !11
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i8, ptr %1, i64 %18
  %20 = load i8, ptr %19, align 1, !tbaa !5, !range !9, !noundef !10
  %21 = trunc nuw i8 %20 to i1
  br i1 %21, label %24, label %22

22:                                               ; preds = %.lr.ph
  %23 = call noundef zeroext i1 @_Z12isCyclicUtiliPbS_(i32 noundef %17, ptr noundef nonnull %1, ptr noundef nonnull %2)
  br i1 %23, label %.critedge.thread, label %24

24:                                               ; preds = %22, %.lr.ph
  %25 = getelementptr inbounds i8, ptr %2, i64 %18
  %26 = load i8, ptr %25, align 1, !tbaa !5, !range !9, !noundef !10
  %27 = trunc nuw i8 %26 to i1
  br i1 %27, label %.critedge.thread, label %28

28:                                               ; preds = %24
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  %30 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  br i1 %30, label %.lr.ph, label %.critedge

.critedge.thread:                                 ; preds = %24, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  br label %33

.critedge:                                        ; preds = %28, %10
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  br label %31

31:                                               ; preds = %.critedge, %3
  %32 = getelementptr inbounds i8, ptr %2, i64 %6
  store i8 0, ptr %32, align 1, !tbaa !5
  br label %33

33:                                               ; preds = %.critedge.thread, %31
  %.3 = phi i1 [ false, %31 ], [ true, %.critedge.thread ]
  ret i1 %.3
}

; 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 ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) 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 nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{i8 0, i8 2}
!10 = !{}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


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