; LLVM IR from NervanaSystems/ngraph :: src/ngraph/graph_util.ll (ZN6ngraph14get_user_countERKNS_6OutputINS_4NodeEEE)

; 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::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator.208" = type { ptr }

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

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt12__shared_ptrIN6ngraph4NodeELN9__gnu_cxx12_Lock_policyE2EE3getEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEdeEv(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_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN6ngraph7is_usedEPNS_4NodeE(ptr noundef) #3

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_ZN6ngraph14get_user_countERKNS_6OutputINS_4NodeEEE(ptr noundef nonnull align 8 dereferenceable(24) %0) #3 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator.208", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator.208", align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  store i64 0, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #5
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_ZNK6ngraph6OutputINS_4NodeEE9get_usersEb(ptr dead_on_unwind writable sret(%"class.std::vector") align 8 %5, ptr noundef nonnull align 8 dereferenceable(24) %11, i1 noundef zeroext false)
  store ptr %5, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #5
  %14 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.208", ptr %6, i32 0, i32 0
  store ptr %13, ptr %14, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = call ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #5
  %17 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.208", ptr %7, i32 0, i32 0
  store ptr %16, ptr %17, align 8
  br label %18

18:                                               ; preds = %30, %1
  %19 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  br i1 %19, label %21, label %20

20:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  br label %36

21:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  store ptr %22, ptr %8, align 8, !tbaa !5
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = call noundef ptr @_ZNKSt12__shared_ptrIN6ngraph4NodeELN9__gnu_cxx12_Lock_policyE2EE3getEv(ptr noundef nonnull align 8 dereferenceable(16) %23) #5
  %25 = invoke noundef zeroext i1 @_ZN6ngraph7is_usedEPNS_4NodeE(ptr noundef %24)
          to label %26 unwind label %32

26:                                               ; preds = %21
  %27 = zext i1 %25 to i64
  %28 = load i64, ptr %3, align 8, !tbaa !9
  %29 = add i64 %28, %27
  store i64 %29, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  br label %30

30:                                               ; preds = %26
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  br label %18

32:                                               ; preds = %21
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %9, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  br label %38

36:                                               ; preds = %20
  %37 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  ret i64 %37

38:                                               ; preds = %32
  %39 = load ptr, ptr %9, align 8
  %40 = load i32, ptr %10, align 4
  %41 = insertvalue { ptr, i32 } poison, ptr %39, 0
  %42 = insertvalue { ptr, i32 } %41, i32 %40, 1
  resume { ptr, i32 } %42
}

declare void @_ZNK6ngraph6OutputINS_4NodeEE9get_usersEb(ptr dead_on_unwind writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 8 dereferenceable(24), i1 noundef zeroext) #4

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 = { "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 #5 = { 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 = !{!"long", !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<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::shared_ptr<ngraph::Node>, std::allocator<std::shared_ptr<ngraph::Node>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator.208" = type { ptr }

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

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt12__shared_ptrIN6ngraph4NodeELN9__gnu_cxx12_Lock_policyE2EE3getEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE3endEv(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_cxxneIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(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 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEdeEv(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_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN6ngraph7is_usedEPNS_4NodeE(ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_ZN6ngraph14get_user_countERKNS_6OutputINS_4NodeEEE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::vector", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.208", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator.208", align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #5
  call void @_ZNK6ngraph6OutputINS_4NodeEE9get_usersEb(ptr dead_on_unwind nonnull writable sret(%"class.std::vector") align 8 %2, ptr noundef nonnull align 8 dereferenceable(24) %0, i1 noundef zeroext false)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  %5 = call ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #5
  store ptr %5, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %6 = call ptr @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #5
  store ptr %6, ptr %4, align 8
  %7 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %11, %1
  %.0.lcssa = phi i64 [ 0, %1 ], [ %13, %11 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  call void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #5
  ret i64 %.0.lcssa

.lr.ph:                                           ; preds = %1, %11
  %.08 = phi i64 [ %13, %11 ], [ 0, %1 ]
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #5
  %9 = call noundef ptr @_ZNKSt12__shared_ptrIN6ngraph4NodeELN9__gnu_cxx12_Lock_policyE2EE3getEv(ptr noundef nonnull align 8 dereferenceable(16) %8) #5
  %10 = invoke noundef zeroext i1 @_ZN6ngraph7is_usedEPNS_4NodeE(ptr noundef %9)
          to label %11 unwind label %16

11:                                               ; preds = %.lr.ph
  %12 = zext i1 %10 to i64
  %13 = add i64 %.08, %12
  %14 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #5
  %15 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt10shared_ptrIN6ngraph4NodeEESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  br i1 %15, label %.lr.ph, label %._crit_edge

16:                                               ; preds = %.lr.ph
  %17 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  call void @_ZNSt6vectorISt10shared_ptrIN6ngraph4NodeEESaIS3_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %2) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #5
  resume { ptr, i32 } %17
}

declare void @_ZNK6ngraph6OutputINS_4NodeEE9get_usersEb(ptr dead_on_unwind writable sret(%"class.std::vector") align 8, ptr noundef nonnull align 8 dereferenceable(24), i1 noundef zeroext) local_unnamed_addr #4

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 = { 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 = { "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 #5 = { 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)"}


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