; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/286 Division 1/Problem B/B.ll (Z5solvei)

; 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 }

@graph = external dso_local global [100001 x %"class.std::vector"], align 16
@rev_graph = external dso_local global [100001 x %"class.std::vector"], align 16
@visited = external dso_local global [100001 x i32], align 16
@comp = external dso_local global [100001 x i32], align 16
@comp_size = external dso_local global [100001 x i32], align 16

; 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 i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 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) #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 @_Z5solvei(i32 noundef %0) #2 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %7
  store i32 1, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = getelementptr inbounds [100001 x i32], ptr @comp, i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [100001 x i32], ptr @comp_size, i64 0, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 1
  %17 = zext i1 %16 to i32
  store i32 %17, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %51, %1
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @graph, i64 0, i64 %22
  %24 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %23) #3
  %25 = icmp ult i64 %20, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %54

27:                                               ; preds = %18
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @graph, i64 0, i64 %29
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %30, i64 noundef %32) #3
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = icmp ne i32 %37, 1
  br i1 %38, label %39, label %50

39:                                               ; preds = %27
  %40 = load i32, ptr %2, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @graph, i64 0, i64 %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %42, i64 noundef %44) #3
  %46 = load i32, ptr %45, align 4, !tbaa !5
  %47 = call noundef i32 @_Z5solvei(i32 noundef %46)
  %48 = load i32, ptr %3, align 4, !tbaa !5
  %49 = and i32 %48, %47
  store i32 %49, ptr %3, align 4, !tbaa !5
  br label %50

50:                                               ; preds = %39, %27
  br label %51

51:                                               ; preds = %50
  %52 = load i32, ptr %4, align 4, !tbaa !5
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %4, align 4, !tbaa !5
  br label %18, !llvm.loop !9

54:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %55

55:                                               ; preds = %88, %54
  %56 = load i32, ptr %5, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = load i32, ptr %2, align 4, !tbaa !5
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @rev_graph, i64 0, i64 %59
  %61 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %60) #3
  %62 = icmp ult i64 %57, %61
  br i1 %62, label %64, label %63

63:                                               ; preds = %55
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %91

64:                                               ; preds = %55
  %65 = load i32, ptr %2, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @rev_graph, i64 0, i64 %66
  %68 = load i32, ptr %5, align 4, !tbaa !5
  %69 = sext i32 %68 to i64
  %70 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %67, i64 noundef %69) #3
  %71 = load i32, ptr %70, align 4, !tbaa !5
  %72 = sext i32 %71 to i64
  %73 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %72
  %74 = load i32, ptr %73, align 4, !tbaa !5
  %75 = icmp ne i32 %74, 1
  br i1 %75, label %76, label %87

76:                                               ; preds = %64
  %77 = load i32, ptr %2, align 4, !tbaa !5
  %78 = sext i32 %77 to i64
  %79 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @rev_graph, i64 0, i64 %78
  %80 = load i32, ptr %5, align 4, !tbaa !5
  %81 = sext i32 %80 to i64
  %82 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %79, i64 noundef %81) #3
  %83 = load i32, ptr %82, align 4, !tbaa !5
  %84 = call noundef i32 @_Z5solvei(i32 noundef %83)
  %85 = load i32, ptr %3, align 4, !tbaa !5
  %86 = and i32 %85, %84
  store i32 %86, ptr %3, align 4, !tbaa !5
  br label %87

87:                                               ; preds = %76, %64
  br label %88

88:                                               ; preds = %87
  %89 = load i32, ptr %5, align 4, !tbaa !5
  %90 = add nsw i32 %89, 1
  store i32 %90, ptr %5, align 4, !tbaa !5
  br label %55, !llvm.loop !11

91:                                               ; preds = %63
  %92 = load i32, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %92
}

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 = !{!"int", !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}


; 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 }

@graph = external dso_local global [100001 x %"class.std::vector"], align 16
@rev_graph = external dso_local global [100001 x %"class.std::vector"], align 16
@visited = external dso_local local_unnamed_addr global [100001 x i32], align 16
@comp = external dso_local local_unnamed_addr global [100001 x i32], align 16
@comp_size = external dso_local local_unnamed_addr global [100001 x i32], align 16

; 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 nounwind uwtable
define dso_local noundef range(i32 0, 2) i32 @_Z5solvei(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sext i32 %0 to i64
  %3 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %2
  store i32 1, ptr %3, align 4, !tbaa !5
  %4 = getelementptr inbounds [100001 x i32], ptr @comp, i64 0, i64 %2
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = sext i32 %5 to i64
  %7 = getelementptr inbounds [100001 x i32], ptr @comp_size, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = icmp eq i32 %8, 1
  %10 = zext i1 %9 to i32
  %11 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @graph, i64 0, i64 %2
  %12 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %11) #1
  %.not30 = icmp eq i64 %12, 0
  br i1 %.not30, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %25, %1
  %.020.lcssa = phi i32 [ %10, %1 ], [ %.1, %25 ]
  %13 = getelementptr inbounds [100001 x %"class.std::vector"], ptr @rev_graph, i64 0, i64 %2
  %14 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #1
  %.not31 = icmp eq i64 %14, 0
  br i1 %.not31, label %._crit_edge, label %.lr.ph28

.lr.ph:                                           ; preds = %1, %25
  %indvars.iv = phi i64 [ %indvars.iv.next, %25 ], [ 0, %1 ]
  %.02024 = phi i32 [ %.1, %25 ], [ %10, %1 ]
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %11, i64 noundef %indvars.iv) #1
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %.not23 = icmp eq i32 %19, 1
  br i1 %.not23, label %25, label %20

20:                                               ; preds = %.lr.ph
  %21 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %11, i64 noundef %indvars.iv) #1
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = tail call noundef i32 @_Z5solvei(i32 noundef %22)
  %24 = and i32 %23, %.02024
  br label %25

25:                                               ; preds = %.lr.ph, %20
  %.1 = phi i32 [ %24, %20 ], [ %.02024, %.lr.ph ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %26 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %11) #1
  %27 = icmp ugt i64 %26, %indvars.iv.next
  br i1 %27, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %38, %.preheader
  %.2.lcssa = phi i32 [ %.020.lcssa, %.preheader ], [ %.3, %38 ]
  ret i32 %.2.lcssa

.lr.ph28:                                         ; preds = %.preheader, %38
  %indvars.iv33 = phi i64 [ %indvars.iv.next34, %38 ], [ 0, %.preheader ]
  %.226 = phi i32 [ %.3, %38 ], [ %.020.lcssa, %.preheader ]
  %28 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %indvars.iv33) #1
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [100001 x i32], ptr @visited, i64 0, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %.not = icmp eq i32 %32, 1
  br i1 %.not, label %38, label %33

33:                                               ; preds = %.lr.ph28
  %34 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %indvars.iv33) #1
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %36 = tail call noundef i32 @_Z5solvei(i32 noundef %35)
  %37 = and i32 %36, %.226
  br label %38

38:                                               ; preds = %.lr.ph28, %33
  %.3 = phi i32 [ %37, %33 ], [ %.226, %.lr.ph28 ]
  %indvars.iv.next34 = add nuw nsw i64 %indvars.iv33, 1
  %39 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #1
  %40 = icmp ugt i64 %39, %indvars.iv.next34
  br i1 %40, label %.lr.ph28, label %._crit_edge, !llvm.loop !11
}

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 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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