; LLVM IR from facebook/redex :: libredex/BigBlocks.ll (ZNK10big_blocks19InstructionIterable3endEv)

; 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.cfg::InstructionIteratorImpl" = type { ptr, %"struct.std::_Rb_tree_const_iterator", %"class.ir_list::InstructionIteratorImpl" }
%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"class.ir_list::InstructionIteratorImpl" = type { %"class.boost::intrusive::list_iterator", %"class.boost::intrusive::list_iterator" }
%"class.boost::intrusive::list_iterator" = type { %"struct.boost::intrusive::iiterator_members" }
%"struct.boost::intrusive::iiterator_members" = type { ptr }
%"class.big_blocks::InstructionIterator" = type <{ %"class.cfg::InstructionIteratorImpl", i8, [7 x i8] }>
%"class.ir_list::InstructionIterableImpl" = type { %"class.boost::intrusive::list_iterator", %"class.boost::intrusive::list_iterator" }
%"struct.big_blocks::InstructionIterable" = 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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7ir_list23InstructionIterableImplILb0EEC2IN3cfg5BlockEEEPT_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #1 align 2

declare void @_ZN3cfg5Block27to_cfg_instruction_iteratorERKN7ir_list23InstructionIteratorImplILb0EEEb(ptr dead_on_unwind writable sret(%"class.cfg::InstructionIteratorImpl") align 8, ptr noundef nonnull align 8 dereferenceable(104), ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7ir_list23InstructionIterableImplILb0EE3endEv(ptr dead_on_unwind noalias writable sret(%"class.ir_list::InstructionIteratorImpl") align 8, ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK10big_blocks8BigBlock10get_blocksEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN10big_blocks19InstructionIteratorC2ERKN3cfg23InstructionIteratorImplILb0EEEb(ptr noundef nonnull align 8 dereferenceable(33), ptr noundef nonnull align 8 dereferenceable(32), i1 noundef zeroext) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK10big_blocks19InstructionIterable3endEv(ptr dead_on_unwind noalias writable sret(%"class.big_blocks::InstructionIterator") align 8 %0, ptr noundef nonnull align 8 dereferenceable(8) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"class.cfg::InstructionIteratorImpl", align 8
  %7 = alloca %"class.ir_list::InstructionIteratorImpl", align 8
  %8 = alloca %"class.ir_list::InstructionIterableImpl", align 8
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %10 = getelementptr inbounds %"struct.big_blocks::InstructionIterable", ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK10big_blocks8BigBlock10get_blocksEv(ptr noundef nonnull align 8 dereferenceable(24) %11)
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIPN3cfg5BlockESaIS2_EE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  store ptr %13, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #4
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  call void @_ZN7ir_list23InstructionIterableImplILb0EEC2IN3cfg5BlockEEEPT_(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef %17)
  call void @_ZNK7ir_list23InstructionIterableImplILb0EE3endEv(ptr dead_on_unwind writable sret(%"class.ir_list::InstructionIteratorImpl") align 8 %7, ptr noundef nonnull align 8 dereferenceable(16) %8)
  call void @_ZN3cfg5Block27to_cfg_instruction_iteratorERKN7ir_list23InstructionIteratorImplILb0EEEb(ptr dead_on_unwind writable sret(%"class.cfg::InstructionIteratorImpl") align 8 %6, ptr noundef nonnull align 8 dereferenceable(104) %15, ptr noundef nonnull align 8 dereferenceable(16) %7, i1 noundef zeroext false)
  call void @_ZN10big_blocks19InstructionIteratorC2ERKN3cfg23InstructionIteratorImplILb0EEEb(ptr noundef nonnull align 8 dereferenceable(33) %0, ptr noundef nonnull align 8 dereferenceable(32) %6, i1 noundef zeroext false)
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIPN3cfg5BlockESaIS2_EE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 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 #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, !6, i64 0}
!10 = !{!"_ZTSN10big_blocks19InstructionIterableE", !6, 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.cfg::InstructionIteratorImpl" = type { ptr, %"struct.std::_Rb_tree_const_iterator", %"class.ir_list::InstructionIteratorImpl" }
%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"class.ir_list::InstructionIteratorImpl" = type { %"class.boost::intrusive::list_iterator", %"class.boost::intrusive::list_iterator" }
%"class.boost::intrusive::list_iterator" = type { %"struct.boost::intrusive::iiterator_members" }
%"struct.boost::intrusive::iiterator_members" = type { ptr }
%"class.big_blocks::InstructionIterator" = type <{ %"class.cfg::InstructionIteratorImpl", i8, [7 x i8] }>
%"class.ir_list::InstructionIterableImpl" = type { %"class.boost::intrusive::list_iterator", %"class.boost::intrusive::list_iterator" }

; 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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7ir_list23InstructionIterableImplILb0EEC2IN3cfg5BlockEEEPT_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) unnamed_addr #1 align 2

declare void @_ZN3cfg5Block27to_cfg_instruction_iteratorERKN7ir_list23InstructionIteratorImplILb0EEEb(ptr dead_on_unwind writable sret(%"class.cfg::InstructionIteratorImpl") align 8, ptr noundef nonnull align 8 dereferenceable(104), ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK7ir_list23InstructionIterableImplILb0EE3endEv(ptr dead_on_unwind noalias writable sret(%"class.ir_list::InstructionIteratorImpl") align 8, ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK10big_blocks8BigBlock10get_blocksEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN10big_blocks19InstructionIteratorC2ERKN3cfg23InstructionIteratorImplILb0EEEb(ptr noundef nonnull align 8 dereferenceable(33), ptr noundef nonnull align 8 dereferenceable(32), i1 noundef zeroext) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK10big_blocks19InstructionIterable3endEv(ptr dead_on_unwind noalias writable sret(%"class.big_blocks::InstructionIterator") align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(8) %1) local_unnamed_addr #1 align 2 {
  %3 = alloca %"class.cfg::InstructionIteratorImpl", align 8
  %4 = alloca %"class.ir_list::InstructionIteratorImpl", align 8
  %5 = alloca %"class.ir_list::InstructionIterableImpl", align 8
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK10big_blocks8BigBlock10get_blocksEv(ptr noundef nonnull align 8 dereferenceable(24) %6)
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIPN3cfg5BlockESaIS2_EE4backEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #4
  %9 = load ptr, ptr %8, align 8, !tbaa !10
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %5) #4
  call void @_ZN7ir_list23InstructionIterableImplILb0EEC2IN3cfg5BlockEEEPT_(ptr noundef nonnull align 8 dereferenceable(16) %5, ptr noundef %9)
  call void @_ZNK7ir_list23InstructionIterableImplILb0EE3endEv(ptr dead_on_unwind nonnull writable sret(%"class.ir_list::InstructionIteratorImpl") align 8 %4, ptr noundef nonnull align 8 dereferenceable(16) %5)
  call void @_ZN3cfg5Block27to_cfg_instruction_iteratorERKN7ir_list23InstructionIteratorImplILb0EEEb(ptr dead_on_unwind nonnull writable sret(%"class.cfg::InstructionIteratorImpl") align 8 %3, ptr noundef nonnull align 8 dereferenceable(104) %9, ptr noundef nonnull align 8 dereferenceable(16) %4, i1 noundef zeroext false)
  call void @_ZN10big_blocks19InstructionIteratorC2ERKN3cfg23InstructionIteratorImplILb0EEEb(ptr noundef nonnull align 8 dereferenceable(33) %0, ptr noundef nonnull align 8 dereferenceable(32) %3, i1 noundef zeroext false)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIPN3cfg5BlockESaIS2_EE4backEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 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 #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, !7, i64 0}
!6 = !{!"_ZTSN10big_blocks19InstructionIterableE", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!7, !7, i64 0}


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