; LLVM IR from trustwallet/wallet-core :: src/NEO/ReadData.ll (ZN2TW13writeVarBytesERKSt6vectorIhSaIhEEm)

; 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<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator.0" = type { ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIhSaIhEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2TW13writeVarBytesERKSt6vectorIhSaIhEEm(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #2 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i1, align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  %14 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  %15 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  store i1 false, ptr %7, align 1
  call void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = call noundef i64 @_ZNKSt6vectorIhSaIhEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %16) #4
  %18 = load i64, ptr %6, align 8, !tbaa !9
  %19 = sub i64 %17, %18
  %20 = invoke noundef zeroext i8 @_ZN2TW12encodeVarIntEmRSt6vectorIhSaIhEE(i64 noundef %19, ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %21 unwind label %43

21:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %22 = call ptr @_ZNSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %23 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %11, i32 0, i32 0
  store ptr %22, ptr %23, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEC2IPhvEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = call ptr @_ZNKSt6vectorIhSaIhEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %24) #4
  %26 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %13, i32 0, i32 0
  store ptr %25, ptr %26, align 8
  %27 = load i64, ptr %6, align 8, !tbaa !9
  %28 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %13, i64 noundef %27) #4
  %29 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %12, i32 0, i32 0
  store ptr %28, ptr %29, align 8
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = call ptr @_ZNKSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %30) #4
  %32 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %14, i32 0, i32 0
  store ptr %31, ptr %32, align 8
  %33 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %10, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8
  %35 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %12, i32 0, i32 0
  %36 = load ptr, ptr %35, align 8
  %37 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.0", ptr %14, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8
  %39 = invoke ptr @_ZNSt6vectorIhSaIhEE6insertIN9__gnu_cxx17__normal_iteratorIPKhS1_EEvEENS4_IPhS1_EES7_T_SA_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr %34, ptr %36, ptr %38)
          to label %40 unwind label %47

40:                                               ; preds = %21
  %41 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %15, i32 0, i32 0
  store ptr %39, ptr %41, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  store i1 true, ptr %7, align 1
  %42 = load i1, ptr %7, align 1
  br i1 %42, label %52, label %51

43:                                               ; preds = %3
  %44 = landingpad { ptr, i32 }
          cleanup
  %45 = extractvalue { ptr, i32 } %44, 0
  store ptr %45, ptr %8, align 8
  %46 = extractvalue { ptr, i32 } %44, 1
  store i32 %46, ptr %9, align 4
  br label %53

47:                                               ; preds = %21
  %48 = landingpad { ptr, i32 }
          cleanup
  %49 = extractvalue { ptr, i32 } %48, 0
  store ptr %49, ptr %8, align 8
  %50 = extractvalue { ptr, i32 } %48, 1
  store i32 %50, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %53

51:                                               ; preds = %40
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %52

52:                                               ; preds = %51, %40
  ret void

53:                                               ; preds = %47, %43
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %54

54:                                               ; preds = %53
  %55 = load ptr, ptr %8, align 8
  %56 = load i32, ptr %9, align 4
  %57 = insertvalue { ptr, i32 } poison, ptr %55, 0
  %58 = insertvalue { ptr, i32 } %57, i32 %56, 1
  resume { ptr, i32 } %58
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

declare noundef zeroext i8 @_ZN2TW12encodeVarIntEmRSt6vectorIhSaIhEE(i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) #3

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt6vectorIhSaIhEE6insertIN9__gnu_cxx17__normal_iteratorIPKhS1_EEvEENS4_IPhS1_EES7_T_SA_(ptr noundef nonnull align 8 dereferenceable(24), ptr, ptr, ptr) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEC2IPhvEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIhSaIhEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = !{!"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<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator.0" = type { ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIhSaIhEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN2TW13writeVarBytesERKSt6vectorIhSaIhEEm(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator.0", align 8
  tail call void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %7 = tail call noundef i64 @_ZNKSt6vectorIhSaIhEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %8 = sub i64 %7, %2
  %9 = invoke noundef zeroext i8 @_ZN2TW12encodeVarIntEmRSt6vectorIhSaIhEE(i64 noundef %8, ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %10 unwind label %18

10:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %11 = tail call ptr @_ZNSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %11, ptr %5, align 8
  call void @_ZN9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEC2IPhvEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #4
  %12 = call ptr @_ZNKSt6vectorIhSaIhEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  store ptr %12, ptr %6, align 8
  %13 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %6, i64 noundef %2) #4
  %14 = call ptr @_ZNKSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %15 = load ptr, ptr %4, align 8
  %16 = invoke ptr @_ZNSt6vectorIhSaIhEE6insertIN9__gnu_cxx17__normal_iteratorIPKhS1_EEvEENS4_IPhS1_EES7_T_SA_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr %15, ptr %13, ptr %14)
          to label %17 unwind label %20

17:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  ret void

18:                                               ; preds = %3
  %19 = landingpad { ptr, i32 }
          cleanup
  br label %22

20:                                               ; preds = %10
  %21 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  br label %22

22:                                               ; preds = %20, %18
  %.pn = phi { ptr, i32 } [ %21, %20 ], [ %19, %18 ]
  call void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

declare noundef zeroext i8 @_ZN2TW12encodeVarIntEmRSt6vectorIhSaIhEE(i64 noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt6vectorIhSaIhEE6insertIN9__gnu_cxx17__normal_iteratorIPKhS1_EEvEENS4_IPhS1_EES7_T_SA_(ptr noundef nonnull align 8 dereferenceable(24), ptr, ptr, ptr) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEC2IPhvEERKNS0_IT_S5_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIhSaIhEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKhSt6vectorIhSaIhEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIhSaIhEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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 = { 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 = { "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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass