; LLVM IR from andreimaximov/algorithms :: hacker-rank/algorithms/dynamic-programming/stock-maximize/main.ll (Z10loadPricesRSim)

; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::istream_iterator" = type <{ ptr, i32, i8, [3 x i8] }>
%"class.std::back_insert_iterator" = type { ptr }

@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10loadPricesRSim(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(16) %1, i64 noundef %2) #0 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 %"class.std::istream_iterator", align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::back_insert_iterator", align 8
  %12 = alloca %"class.std::back_insert_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 @_ZNSt6vectorIjSaIjEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  invoke void @_ZNSt16istream_iteratorIjcSt11char_traitsIcElEC2ERSi(ptr noundef nonnull align 8 dereferenceable(13) %8, ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin)
          to label %13 unwind label %24

13:                                               ; preds = %3
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = invoke ptr @_ZSt13back_inserterISt6vectorIjSaIjEEESt20back_insert_iteratorIT_ERS4_(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %16 unwind label %24

16:                                               ; preds = %13
  %17 = getelementptr inbounds %"class.std::back_insert_iterator", ptr %11, i32 0, i32 0
  store ptr %15, ptr %17, align 8
  %18 = getelementptr inbounds %"class.std::back_insert_iterator", ptr %11, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8
  %20 = invoke ptr @_ZSt6copy_nISt16istream_iteratorIjcSt11char_traitsIcElEmSt20back_insert_iteratorISt6vectorIjSaIjEEEET1_T_T0_S9_(ptr noundef %8, i64 noundef %14, ptr %19)
          to label %21 unwind label %24

21:                                               ; preds = %16
  %22 = getelementptr inbounds %"class.std::back_insert_iterator", ptr %12, i32 0, i32 0
  store ptr %20, ptr %22, align 8
  store i1 true, ptr %7, align 1
  %23 = load i1, ptr %7, align 1
  br i1 %23, label %29, label %28

24:                                               ; preds = %16, %13, %3
  %25 = landingpad { ptr, i32 }
          cleanup
  %26 = extractvalue { ptr, i32 } %25, 0
  store ptr %26, ptr %9, align 8
  %27 = extractvalue { ptr, i32 } %25, 1
  store i32 %27, ptr %10, align 4
  call void @_ZNSt6vectorIjSaIjEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %30

28:                                               ; preds = %21
  call void @_ZNSt6vectorIjSaIjEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %29

29:                                               ; preds = %28, %21
  ret void

30:                                               ; preds = %24
  %31 = load ptr, ptr %9, align 8
  %32 = load i32, ptr %10, align 4
  %33 = insertvalue { ptr, i32 } poison, ptr %31, 0
  %34 = insertvalue { ptr, i32 } %33, i32 %32, 1
  resume { ptr, i32 } %34
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIjSaIjEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt6copy_nISt16istream_iteratorIjcSt11char_traitsIcElEmSt20back_insert_iteratorISt6vectorIjSaIjEEEET1_T_T0_S9_(ptr noundef, i64 noundef, ptr) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt16istream_iteratorIjcSt11char_traitsIcElEC2ERSi(ptr noundef nonnull align 8 dereferenceable(13), ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt13back_inserterISt6vectorIjSaIjEEESt20back_insert_iteratorIT_ERS4_(ptr noundef nonnull align 8 dereferenceable(24)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIjSaIjEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 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 = { 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 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 = !{!"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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::istream_iterator" = type <{ ptr, i32, i8, [3 x i8] }>

@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10loadPricesRSim(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::vector") align 8 %0, ptr nocapture noundef nonnull readnone align 8 dereferenceable(16) %1, i64 noundef %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::istream_iterator", align 8
  tail call void @_ZNSt6vectorIjSaIjEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  invoke void @_ZNSt16istream_iteratorIjcSt11char_traitsIcElEC2ERSi(ptr noundef nonnull align 8 dereferenceable(13) %4, ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin)
          to label %5 unwind label %9

5:                                                ; preds = %3
  %6 = invoke ptr @_ZSt13back_inserterISt6vectorIjSaIjEEESt20back_insert_iteratorIT_ERS4_(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %7 unwind label %9

7:                                                ; preds = %5
  %8 = invoke ptr @_ZSt6copy_nISt16istream_iteratorIjcSt11char_traitsIcElEmSt20back_insert_iteratorISt6vectorIjSaIjEEEET1_T_T0_S9_(ptr noundef nonnull %4, i64 noundef %2, ptr %6)
          to label %11 unwind label %9

9:                                                ; preds = %7, %5, %3
  %10 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIjSaIjEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %10

11:                                               ; preds = %7
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIjSaIjEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt6copy_nISt16istream_iteratorIjcSt11char_traitsIcElEmSt20back_insert_iteratorISt6vectorIjSaIjEEEET1_T_T0_S9_(ptr noundef, i64 noundef, ptr) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt16istream_iteratorIjcSt11char_traitsIcElEC2ERSi(ptr noundef nonnull align 8 dereferenceable(13), ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt13back_inserterISt6vectorIjSaIjEEESt20back_insert_iteratorIT_ERS4_(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIjSaIjEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 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 = { 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 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)"}


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