; LLVM IR from facebook/redex :: libredex/ControlFlow.ll (ZNK3cfg16ControlFlowGraph6blocksEv)

; 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.223" = type { %"struct.std::_Vector_base.224" }
%"struct.std::_Vector_base.224" = type { %"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl" }
%"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl" = type { %"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"class.cfg::ControlFlowGraph" = type { %"class.std::map", %class.UnorderedSet, ptr, ptr, ptr, i32, i8, i8, i8, %"class.std::vector" }
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<unsigned long, std::pair<const unsigned long, cfg::Block *>, std::_Select1st<std::pair<const unsigned long, cfg::Block *>>, std::less<unsigned long>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<unsigned long, std::pair<const unsigned long, cfg::Block *>, std::_Select1st<std::pair<const unsigned long, cfg::Block *>>, std::less<unsigned long>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%class.UnorderedSet = type { %"class.std::unordered_set" }
%"class.std::unordered_set" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<IRInstruction *, std::allocator<IRInstruction *>>::_Vector_impl" }
%"struct.std::_Vector_base<IRInstruction *, std::allocator<IRInstruction *>>::_Vector_impl" = type { %"struct.std::_Vector_base<IRInstruction *, std::allocator<IRInstruction *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<IRInstruction *, std::allocator<IRInstruction *>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair.178" = type { i64, ptr }

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) #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
define dso_local void @_ZNK3cfg16ControlFlowGraph6blocksEv(ptr dead_on_unwind noalias writable sret(%"class.std::vector.223") align 8 %0, ptr noundef nonnull align 8 dereferenceable(160) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %10 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %13 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  call void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %14 = getelementptr inbounds %"class.cfg::ControlFlowGraph", ptr %13, i32 0, i32 0
  %15 = call noundef i64 @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %14) #3
  invoke void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15)
          to label %16 unwind label %27

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %17 = getelementptr inbounds %"class.cfg::ControlFlowGraph", ptr %13, i32 0, i32 0
  store ptr %17, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = call ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %18) #3
  %20 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %9, i32 0, i32 0
  store ptr %19, ptr %20, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = call ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %21) #3
  %23 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %10, i32 0, i32 0
  store ptr %22, ptr %23, align 8
  br label %24

24:                                               ; preds = %38, %16
  %25 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEES8_(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull align 8 dereferenceable(8) %10) #3
  br i1 %25, label %31, label %26

26:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %44

27:                                               ; preds = %2
  %28 = landingpad { ptr, i32 }
          cleanup
  %29 = extractvalue { ptr, i32 } %28, 0
  store ptr %29, ptr %6, align 8
  %30 = extractvalue { ptr, i32 } %28, 1
  store i32 %30, ptr %7, align 4
  br label %48

31:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %9) #3
  store ptr %32, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %33 = load ptr, ptr %11, align 8, !tbaa !5
  %34 = getelementptr inbounds %"struct.std::pair.178", ptr %33, i32 0, i32 1
  %35 = load ptr, ptr %34, align 8, !tbaa !9
  store ptr %35, ptr %12, align 8, !tbaa !5
  %36 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE12emplace_backIJRS2_EEES6_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %12)
          to label %37 unwind label %40

37:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  br label %38

38:                                               ; preds = %37
  %39 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %9) #3
  br label %24

40:                                               ; preds = %31
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %6, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %48

44:                                               ; preds = %26
  store i1 true, ptr %5, align 1
  %45 = load i1, ptr %5, align 1
  br i1 %45, label %47, label %46

46:                                               ; preds = %44
  call void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %47

47:                                               ; preds = %46, %44
  ret void

48:                                               ; preds = %40, %27
  call void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %49

49:                                               ; preds = %48
  %50 = load ptr, ptr %6, align 8
  %51 = load i32, ptr %7, align 4
  %52 = insertvalue { ptr, i32 } poison, ptr %50, 0
  %53 = insertvalue { ptr, i32 } %52, i32 %51, 1
  resume { ptr, i32 } %53
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEES8_(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 @_ZNKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE12emplace_backIJRS2_EEES6_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #1 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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSSt4pairIKmPN3cfg5BlockEE", !11, i64 0, !6, i64 8}
!11 = !{!"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.223" = type { %"struct.std::_Vector_base.224" }
%"struct.std::_Vector_base.224" = type { %"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl" }
%"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl" = type { %"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<cfg::Block *, std::allocator<cfg::Block *>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::_Rb_tree_const_iterator" = type { ptr }

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) #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
define dso_local void @_ZNK3cfg16ControlFlowGraph6blocksEv(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::vector.223") align 8 %0, ptr noundef nonnull align 8 dereferenceable(160) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %4 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %5 = alloca ptr, align 8
  tail call void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %6 = tail call noundef i64 @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) %1) #3
  invoke void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %6)
          to label %7 unwind label %11

7:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %8 = tail call ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %1) #3
  store ptr %8, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %9 = tail call ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %1) #3
  store ptr %9, ptr %4, align 8
  %10 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEES8_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %17, %7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  ret void

11:                                               ; preds = %2
  %12 = landingpad { ptr, i32 }
          cleanup
  br label %22

.lr.ph:                                           ; preds = %7, %17
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %14 = getelementptr inbounds i8, ptr %13, i64 8
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  store ptr %15, ptr %5, align 8, !tbaa !11
  %16 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE12emplace_backIJRS2_EEES6_DpOT_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(8) %5)
          to label %17 unwind label %20

17:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  %18 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %19 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEES8_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %19, label %.lr.ph, label %._crit_edge

20:                                               ; preds = %.lr.ph
  %21 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br label %22

22:                                               ; preds = %20, %11
  %.pn = phi { ptr, i32 } [ %21, %20 ], [ %12, %11 ]
  call void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEES8_(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 @_ZNKSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorISt4pairIKmPN3cfg5BlockEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3mapImPN3cfg5BlockESt4lessImESaISt4pairIKmS2_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPN3cfg5BlockESaIS2_EE12emplace_backIJRS2_EEES6_DpOT_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 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 = { 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, !10, i64 8}
!6 = !{!"_ZTSSt4pairIKmPN3cfg5BlockEE", !7, i64 0, !10, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!10, !10, i64 0}


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