; LLVM IR from junhyeokahn/PyPnC :: external_source/yaml/src/simplekey.ll (ZN4YAML7Scanner16PopAllSimpleKeysEv)

; 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.YAML::Scanner" = type { %"class.YAML::Stream", %"class.std::queue", i8, i8, i8, i8, %"class.std::stack", %"class.std::stack.15", %"class.YAML::ptr_vector", %"class.std::stack.27" }
%"class.YAML::Stream" = type { ptr, %"struct.YAML::Mark", i32, %"class.std::deque", ptr, i64, i64 }
%"struct.YAML::Mark" = type { i32, i32, i32 }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"class.std::queue" = type { %"class.std::deque.3" }
%"class.std::deque.3" = type { %"class.std::_Deque_base.4" }
%"class.std::_Deque_base.4" = type { %"struct.std::_Deque_base<YAML::Token, std::allocator<YAML::Token>>::_Deque_impl" }
%"struct.std::_Deque_base<YAML::Token, std::allocator<YAML::Token>>::_Deque_impl" = type { %"struct.std::_Deque_base<YAML::Token, std::allocator<YAML::Token>>::_Deque_impl_data" }
%"struct.std::_Deque_base<YAML::Token, std::allocator<YAML::Token>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator.8", %"struct.std::_Deque_iterator.8" }
%"struct.std::_Deque_iterator.8" = type { ptr, ptr, ptr, ptr }
%"class.std::stack" = type { %"class.std::deque.9" }
%"class.std::deque.9" = type { %"class.std::_Deque_base.10" }
%"class.std::_Deque_base.10" = type { %"struct.std::_Deque_base<YAML::Scanner::SimpleKey, std::allocator<YAML::Scanner::SimpleKey>>::_Deque_impl" }
%"struct.std::_Deque_base<YAML::Scanner::SimpleKey, std::allocator<YAML::Scanner::SimpleKey>>::_Deque_impl" = type { %"struct.std::_Deque_base<YAML::Scanner::SimpleKey, std::allocator<YAML::Scanner::SimpleKey>>::_Deque_impl_data" }
%"struct.std::_Deque_base<YAML::Scanner::SimpleKey, std::allocator<YAML::Scanner::SimpleKey>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator.14", %"struct.std::_Deque_iterator.14" }
%"struct.std::_Deque_iterator.14" = type { ptr, ptr, ptr, ptr }
%"class.std::stack.15" = type { %"class.std::deque.16" }
%"class.std::deque.16" = type { %"class.std::_Deque_base.17" }
%"class.std::_Deque_base.17" = type { %"struct.std::_Deque_base<YAML::Scanner::IndentMarker *, std::allocator<YAML::Scanner::IndentMarker *>>::_Deque_impl" }
%"struct.std::_Deque_base<YAML::Scanner::IndentMarker *, std::allocator<YAML::Scanner::IndentMarker *>>::_Deque_impl" = type { %"struct.std::_Deque_base<YAML::Scanner::IndentMarker *, std::allocator<YAML::Scanner::IndentMarker *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<YAML::Scanner::IndentMarker *, std::allocator<YAML::Scanner::IndentMarker *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator.21", %"struct.std::_Deque_iterator.21" }
%"struct.std::_Deque_iterator.21" = type { ptr, ptr, ptr, ptr }
%"class.YAML::ptr_vector" = type { %"class.std::vector.22" }
%"class.std::vector.22" = type { %"struct.std::_Vector_base.23" }
%"struct.std::_Vector_base.23" = type { %"struct.std::_Vector_base<std::unique_ptr<YAML::Scanner::IndentMarker>, std::allocator<std::unique_ptr<YAML::Scanner::IndentMarker>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::unique_ptr<YAML::Scanner::IndentMarker>, std::allocator<std::unique_ptr<YAML::Scanner::IndentMarker>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::unique_ptr<YAML::Scanner::IndentMarker>, std::allocator<std::unique_ptr<YAML::Scanner::IndentMarker>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::unique_ptr<YAML::Scanner::IndentMarker>, std::allocator<std::unique_ptr<YAML::Scanner::IndentMarker>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::stack.27" = type { %"class.std::deque.28" }
%"class.std::deque.28" = type { %"class.std::_Deque_base.29" }
%"class.std::_Deque_base.29" = type { %"struct.std::_Deque_base<YAML::Scanner::FLOW_MARKER, std::allocator<YAML::Scanner::FLOW_MARKER>>::_Deque_impl" }
%"struct.std::_Deque_base<YAML::Scanner::FLOW_MARKER, std::allocator<YAML::Scanner::FLOW_MARKER>>::_Deque_impl" = type { %"struct.std::_Deque_base<YAML::Scanner::FLOW_MARKER, std::allocator<YAML::Scanner::FLOW_MARKER>>::_Deque_impl_data" }
%"struct.std::_Deque_base<YAML::Scanner::FLOW_MARKER, std::allocator<YAML::Scanner::FLOW_MARKER>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator.33", %"struct.std::_Deque_iterator.33" }
%"struct.std::_Deque_iterator.33" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4YAML7Scanner16PopAllSimpleKeysEv(ptr noundef nonnull align 8 dereferenceable(480) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  br label %4

4:                                                ; preds = %8, %1
  %5 = getelementptr inbounds %"class.YAML::Scanner", ptr %3, i32 0, i32 6
  %6 = call noundef zeroext i1 @_ZNKSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  %7 = xor i1 %6, true
  br i1 %7, label %8, label %10

8:                                                ; preds = %4
  %9 = getelementptr inbounds %"class.YAML::Scanner", ptr %3, i32 0, i32 6
  call void @_ZNSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %9)
  br label %4, !llvm.loop !9

10:                                               ; preds = %4
  ret void
}

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 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" }

!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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4YAML7Scanner16PopAllSimpleKeysEv(ptr noundef nonnull align 8 dereferenceable(480) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 216
  %3 = tail call noundef zeroext i1 @_ZNKSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br i1 %3, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  tail call void @_ZNSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %4 = tail call noundef zeroext i1 @_ZNKSt5stackIN4YAML7Scanner9SimpleKeyESt5dequeIS2_SaIS2_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br i1 %4, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %1
  ret void
}

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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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