; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/SHORT/COOK71/Problem C/C.ll (Z14makeBridgeTreeiii)

; 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<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i32, i32 }

@g = external dso_local global [100100 x %"class.std::vector"], align 16
@bridge = external dso_local global [200100 x i32], align 16
@bridgeComp = external dso_local global [100100 x i32], align 16
@vis = external dso_local global [100100 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 ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #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 nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z14makeBridgeTreeiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [100100 x i32], ptr @vis, i64 0, i64 %13
  store i32 1, ptr %14, align 4, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100100 x i32], ptr @bridgeComp, i64 0, i64 %17
  store i32 %15, ptr %18, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100100 x %"class.std::vector"], ptr @g, i64 0, i64 %20
  %22 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  %23 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %22, ptr %23, align 8
  br label %24

24:                                               ; preds = %59, %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [100100 x %"class.std::vector"], ptr @g, i64 0, i64 %26
  %28 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %27) #4
  %29 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %28, ptr %29, align 8
  %30 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  br i1 %30, label %32, label %31

31:                                               ; preds = %24
  store i32 2, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  br label %61

32:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %33 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  %34 = getelementptr inbounds %"struct.std::pair", ptr %33, i32 0, i32 0
  %35 = load i32, ptr %34, align 4, !tbaa !9
  store i32 %35, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  %36 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  %37 = getelementptr inbounds %"struct.std::pair", ptr %36, i32 0, i32 1
  %38 = load i32, ptr %37, align 4, !tbaa !11
  store i32 %38, ptr %11, align 4, !tbaa !5
  %39 = load i32, ptr %10, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [100100 x i32], ptr @vis, i64 0, i64 %40
  %42 = load i32, ptr %41, align 4, !tbaa !5
  %43 = icmp ne i32 %42, 0
  br i1 %43, label %44, label %45

44:                                               ; preds = %32
  store i32 4, ptr %9, align 4
  br label %56

45:                                               ; preds = %32
  %46 = load i32, ptr %11, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [200100 x i32], ptr @bridge, i64 0, i64 %47
  %49 = load i32, ptr %48, align 4, !tbaa !5
  %50 = icmp ne i32 %49, 0
  br i1 %50, label %51, label %52

51:                                               ; preds = %45
  store i32 4, ptr %9, align 4
  br label %56

52:                                               ; preds = %45
  %53 = load i32, ptr %10, align 4, !tbaa !5
  %54 = load i32, ptr %11, align 4, !tbaa !5
  %55 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z14makeBridgeTreeiii(i32 noundef %53, i32 noundef %54, i32 noundef %55)
  store i32 0, ptr %9, align 4
  br label %56

56:                                               ; preds = %52, %51, %44
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  %57 = load i32, ptr %9, align 4
  switch i32 %57, label %62 [
    i32 0, label %58
    i32 4, label %59
  ]

58:                                               ; preds = %56
  br label %59

59:                                               ; preds = %58, %56
  %60 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br label %24, !llvm.loop !12

61:                                               ; preds = %31
  ret void

62:                                               ; preds = %56
  unreachable
}

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 = { 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 = { 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 #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, !6, i64 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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

@g = external dso_local global [100100 x %"class.std::vector"], align 16
@bridge = external dso_local local_unnamed_addr global [200100 x i32], align 16
@bridgeComp = external dso_local local_unnamed_addr global [100100 x i32], align 16
@vis = external dso_local local_unnamed_addr global [100100 x i32], align 16

; Function Attrs: mustprogress 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 ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(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 ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z14makeBridgeTreeiii(i32 noundef %0, i32 %1, i32 noundef %2) local_unnamed_addr #1 {
  %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 [100100 x i32], ptr @vis, i64 0, i64 %6
  store i32 1, ptr %7, align 4, !tbaa !5
  %8 = getelementptr inbounds [100100 x i32], ptr @bridgeComp, i64 0, i64 %6
  store i32 %2, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %9 = getelementptr inbounds [100100 x %"class.std::vector"], ptr @g, i64 0, i64 %6
  %10 = tail call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  store ptr %10, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %11 = tail call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  store ptr %11, ptr %5, align 8
  %12 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  br i1 %12, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %26, %3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  ret void

.lr.ph:                                           ; preds = %3, %26
  %13 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = call noundef ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  %16 = sext i32 %14 to i64
  %17 = getelementptr inbounds [100100 x i32], ptr @vis, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %.not = icmp eq i32 %18, 0
  br i1 %.not, label %19, label %26

19:                                               ; preds = %.lr.ph
  %20 = getelementptr inbounds i8, ptr %15, i64 4
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [200100 x i32], ptr @bridge, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %.not10 = icmp eq i32 %24, 0
  br i1 %.not10, label %25, label %26

25:                                               ; preds = %19
  call void @_Z14makeBridgeTreeiii(i32 noundef %14, i32 poison, i32 noundef %2)
  br label %26

26:                                               ; preds = %19, %.lr.ph, %25
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %28 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  store ptr %28, ptr %5, align 8
  %29 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIiiESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  br i1 %29, label %.lr.ph, label %._crit_edge, !llvm.loop !12
}

attributes #0 = { mustprogress 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 = { 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, !6, i64 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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