; LLVM IR from div-bargali/Data-Structures-and-Algorithms :: C++/Algorithms/Graph-Algorithms/Transitive_Closure.ll (Z3DFSRK5GraphPA4_bii)

; 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.__gnu_cxx::__normal_iterator" = type { ptr }
%class.Graph = type { [4 x %"class.std::vector"] }
%"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 uwtable
define dso_local void @_Z3DFSRK5GraphPA4_bii(ptr noundef nonnull align 8 dereferenceable(96) %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %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
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %class.Graph, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [4 x %"class.std::vector"], ptr %14, i64 0, i64 %16
  store ptr %17, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %18 = load ptr, ptr %9, align 8, !tbaa !5
  %19 = call ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #4
  %20 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %10, i32 0, i32 0
  store ptr %19, ptr %20, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = call ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  %23 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %22, ptr %23, align 8
  br label %24

24:                                               ; preds = %52, %4
  %25 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  br i1 %25, label %27, label %26

26:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %54

27:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %10) #4
  %29 = load i32, ptr %28, align 4, !tbaa !9
  store i32 %29, ptr %12, align 4, !tbaa !9
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [4 x i8], ptr %30, i64 %32
  %34 = load i32, ptr %12, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [4 x i8], ptr %33, i64 0, i64 %35
  %37 = load i8, ptr %36, align 1, !tbaa !11, !range !13, !noundef !14
  %38 = trunc i8 %37 to i1
  br i1 %38, label %51, label %39

39:                                               ; preds = %27
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  %41 = load i32, ptr %7, align 4, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [4 x i8], ptr %40, i64 %42
  %44 = load i32, ptr %12, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [4 x i8], ptr %43, i64 0, i64 %45
  store i8 1, ptr %46, align 1, !tbaa !11
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  %48 = load ptr, ptr %6, align 8, !tbaa !5
  %49 = load i32, ptr %7, align 4, !tbaa !9
  %50 = load i32, ptr %12, align 4, !tbaa !9
  call void @_Z3DFSRK5GraphPA4_bii(ptr noundef nonnull align 8 dereferenceable(96) %47, ptr noundef %48, i32 noundef %49, i32 noundef %50)
  br label %51

51:                                               ; preds = %39, %27
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %52

52:                                               ; preds = %51
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %10) #4
  br label %24

54:                                               ; preds = %26
  ret void
}

; 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 @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(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_iteratorIPKiSt6vectorIiSaIiEEEdeEv(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_iteratorIPKiSt6vectorIiSaIiEEEppEv(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 = !{!"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 = !{!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.__gnu_cxx::__normal_iterator" = type { ptr }
%"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
define dso_local void @_Z3DFSRK5GraphPA4_bii(ptr noundef nonnull align 8 dereferenceable(96) %0, ptr nocapture noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = sext i32 %3 to i64
  %8 = getelementptr inbounds [4 x %"class.std::vector"], ptr %0, i64 0, i64 %7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %9 = tail call ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  store ptr %9, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %10 = tail call ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  store ptr %10, ptr %6, align 8
  %11 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #3
  br i1 %11, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %4
  %12 = sext i32 %2 to i64
  br label %13

._crit_edge:                                      ; preds = %21, %4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  ret void

13:                                               ; preds = %.lr.ph, %21
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [4 x i8], ptr %1, i64 %12, i64 %16
  %18 = load i8, ptr %17, align 1, !tbaa !9, !range !11, !noundef !12
  %19 = trunc nuw i8 %18 to i1
  br i1 %19, label %21, label %20

20:                                               ; preds = %13
  store i8 1, ptr %17, align 1, !tbaa !9
  call void @_Z3DFSRK5GraphPA4_bii(ptr noundef nonnull align 8 dereferenceable(96) %0, ptr noundef nonnull %1, i32 noundef %2, i32 noundef %15)
  br label %21

21:                                               ; preds = %20, %13
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  %23 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #3
  br i1 %23, label %13, label %._crit_edge
}

; 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 @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE3endEv(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_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(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_iteratorIPKiSt6vectorIiSaIiEEEdeEv(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_iteratorIPKiSt6vectorIiSaIiEEEppEv(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}


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