; LLVM IR from Razakhel/RaZ :: src/RaZ/Data/Bitset.ll (ZNK3Raz6BitsetcoEv)

; 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.Raz::Bitset" = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"struct.std::_Bit_reference" = type { ptr, i64 }

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #1 align 2

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZNK3Raz6BitsetcoEv(ptr dead_on_unwind noalias writable sret(%"class.Raz::Bitset") align 8 %0, ptr noundef nonnull align 8 dereferenceable(40) %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 %"struct.std::_Bit_iterator", align 8
  %8 = alloca { ptr, i32 }, align 8
  %9 = alloca %"struct.std::_Bit_iterator", align 8
  %10 = alloca { ptr, i32 }, align 8
  %11 = alloca %"struct.std::_Bit_reference", align 8
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  invoke void @_ZN3Raz6BitsetC2ERKS0_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(40) %12)
          to label %13 unwind label %40

13:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #7
  %14 = getelementptr inbounds %"class.Raz::Bitset", ptr %0, i32 0, i32 0
  store ptr %14, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %7) #7
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = call { ptr, i32 } @_ZNSt6vectorIbSaIbEE5beginEv(ptr noundef nonnull align 8 dereferenceable(40) %15) #7
  store { ptr, i32 } %16, ptr %8, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %7, ptr align 8 %8, i64 12, i1 false)
  call void @llvm.lifetime.start.p0(i64 16, ptr %9) #7
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call { ptr, i32 } @_ZNSt6vectorIbSaIbEE3endEv(ptr noundef nonnull align 8 dereferenceable(40) %17) #7
  store { ptr, i32 } %18, ptr %10, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %9, ptr align 8 %10, i64 12, i1 false)
  br label %19

19:                                               ; preds = %35, %13
  %20 = invoke noundef zeroext i1 @_ZStneRKSt18_Bit_iterator_baseS1_(ptr noundef nonnull align 8 dereferenceable(12) %7, ptr noundef nonnull align 8 dereferenceable(12) %9)
          to label %21 unwind label %40

21:                                               ; preds = %19
  br i1 %20, label %23, label %22

22:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 16, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 16, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  br label %36

23:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #7
  %24 = invoke { ptr, i64 } @_ZNKSt13_Bit_iteratordeEv(ptr noundef nonnull align 8 dereferenceable(12) %7)
          to label %25 unwind label %40

25:                                               ; preds = %23
  %26 = getelementptr inbounds { ptr, i64 }, ptr %11, i32 0, i32 0
  %27 = extractvalue { ptr, i64 } %24, 0
  store ptr %27, ptr %26, align 8
  %28 = getelementptr inbounds { ptr, i64 }, ptr %11, i32 0, i32 1
  %29 = extractvalue { ptr, i64 } %24, 1
  store i64 %29, ptr %28, align 8
  %30 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %11) #7
  %31 = xor i1 %30, true
  %32 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %11, i1 noundef zeroext %31) #7
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #7
  br label %33

33:                                               ; preds = %25
  %34 = invoke noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt13_Bit_iteratorppEv(ptr noundef nonnull align 8 dereferenceable(12) %7)
          to label %35 unwind label %40

35:                                               ; preds = %33
  br label %19

36:                                               ; preds = %22
  store i1 true, ptr %5, align 1
  %37 = load i1, ptr %5, align 1
  br i1 %37, label %39, label %38

38:                                               ; preds = %36
  call void @_ZN3Raz6BitsetD2Ev(ptr noundef nonnull align 8 dereferenceable(40) %0) #7
  br label %39

39:                                               ; preds = %38, %36
  ret void

40:                                               ; preds = %33, %23, %19, %2
  %41 = landingpad { ptr, i32 }
          catch ptr null
  %42 = extractvalue { ptr, i32 } %41, 0
  call void @__clang_call_terminate(ptr %42) #8
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN3Raz6BitsetC2ERKS0_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local { ptr, i32 } @_ZNSt6vectorIbSaIbEE5beginEv(ptr noundef nonnull align 8 dereferenceable(40)) #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local { ptr, i32 } @_ZNSt6vectorIbSaIbEE3endEv(ptr noundef nonnull align 8 dereferenceable(40)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt18_Bit_iterator_baseS1_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef nonnull align 8 dereferenceable(12)) #5

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNKSt13_Bit_iteratordeEv(ptr noundef nonnull align 8 dereferenceable(12)) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt13_Bit_iteratorppEv(ptr noundef nonnull align 8 dereferenceable(12)) #5 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3Raz6BitsetD2Ev(ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #6 align 2

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 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 = { noinline noreturn nounwind uwtable "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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 #6 = { 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 #7 = { nounwind }
attributes #8 = { noreturn 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"}


; 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.Raz::Bitset" = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>
%"struct.std::_Bit_reference" = type { ptr, i64 }

; 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 nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_unnamed_addr #1 align 2

; 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 nounwind uwtable
define dso_local void @_ZNK3Raz6BitsetcoEv(ptr dead_on_unwind noalias nonnull writable sret(%"class.Raz::Bitset") align 8 %0, ptr noundef nonnull align 8 dereferenceable(40) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"struct.std::_Bit_iterator", align 8
  %4 = alloca %"struct.std::_Bit_iterator", align 8
  %5 = alloca %"struct.std::_Bit_reference", align 8
  invoke void @_ZN3Raz6BitsetC2ERKS0_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(40) %1)
          to label %6 unwind label %.loopexit.split-lp

6:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %3) #5
  %7 = tail call { ptr, i32 } @_ZNSt6vectorIbSaIbEE5beginEv(ptr noundef nonnull align 8 dereferenceable(40) %0) #5
  %.fca.0.extract1 = extractvalue { ptr, i32 } %7, 0
  %.fca.1.extract2 = extractvalue { ptr, i32 } %7, 1
  store ptr %.fca.0.extract1, ptr %3, align 8
  %.sroa.24.0..sroa_idx = getelementptr inbounds i8, ptr %3, i64 8
  store i32 %.fca.1.extract2, ptr %.sroa.24.0..sroa_idx, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #5
  %8 = tail call { ptr, i32 } @_ZNSt6vectorIbSaIbEE3endEv(ptr noundef nonnull align 8 dereferenceable(40) %0) #5
  %.fca.0.extract = extractvalue { ptr, i32 } %8, 0
  %.fca.1.extract = extractvalue { ptr, i32 } %8, 1
  store ptr %.fca.0.extract, ptr %4, align 8
  %.sroa.2.0..sroa_idx = getelementptr inbounds i8, ptr %4, i64 8
  store i32 %.fca.1.extract, ptr %.sroa.2.0..sroa_idx, align 8
  %9 = getelementptr inbounds i8, ptr %5, i64 8
  br label %10

10:                                               ; preds = %16, %6
  %11 = invoke noundef zeroext i1 @_ZStneRKSt18_Bit_iterator_baseS1_(ptr noundef nonnull align 8 dereferenceable(12) %3, ptr noundef nonnull align 8 dereferenceable(12) %4)
          to label %12 unwind label %.loopexit

12:                                               ; preds = %10
  br i1 %11, label %14, label %13

13:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %3) #5
  ret void

14:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %5) #5
  %15 = invoke { ptr, i64 } @_ZNKSt13_Bit_iteratordeEv(ptr noundef nonnull align 8 dereferenceable(12) %3)
          to label %16 unwind label %.loopexit

16:                                               ; preds = %14
  %17 = extractvalue { ptr, i64 } %15, 0
  store ptr %17, ptr %5, align 8
  %18 = extractvalue { ptr, i64 } %15, 1
  store i64 %18, ptr %9, align 8
  %19 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %5) #5
  %20 = xor i1 %19, true
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %5, i1 noundef zeroext %20) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #5
  %22 = invoke noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt13_Bit_iteratorppEv(ptr noundef nonnull align 8 dereferenceable(12) %3)
          to label %10 unwind label %.loopexit

.loopexit:                                        ; preds = %10, %14, %16
  %lpad.loopexit = landingpad { ptr, i32 }
          catch ptr null
  br label %23

.loopexit.split-lp:                               ; preds = %2
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          catch ptr null
  br label %23

23:                                               ; preds = %.loopexit.split-lp, %.loopexit
  %lpad.phi = phi { ptr, i32 } [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  %24 = extractvalue { ptr, i32 } %lpad.phi, 0
  call void @__clang_call_terminate(ptr %24) #6
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN3Raz6BitsetC2ERKS0_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(40)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local { ptr, i32 } @_ZNSt6vectorIbSaIbEE5beginEv(ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local { ptr, i32 } @_ZNSt6vectorIbSaIbEE3endEv(ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt18_Bit_iterator_baseS1_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNKSt13_Bit_iteratordeEv(ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt13_Bit_iteratorppEv(ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #4 align 2

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 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 = { noinline noreturn nounwind uwtable "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 = { 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 #5 = { nounwind }
attributes #6 = { noreturn 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,LICMPass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass