; LLVM IR from mackorone/mms :: old/v1/src/algo/FloodFill/History.ll (ZN7History17getCheckpointPathEv)

; 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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl" }
%"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl" = type { %"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7History17getCheckpointCellEv(ptr noundef nonnull align 8 dereferenceable(224)) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7History17getCheckpointPathEv(ptr dead_on_unwind noalias writable sret(%"class.std::stack") align 8 %0, ptr noundef nonnull align 8 dereferenceable(224) %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 ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %0)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %10 = call noundef ptr @_ZN7History17getCheckpointCellEv(ptr noundef nonnull align 8 dereferenceable(224) %9)
  store ptr %10, ptr %6, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %18, %2
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %23

14:                                               ; preds = %11
  invoke void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %0, ptr noundef nonnull align 8 dereferenceable(8) %6)
          to label %15 unwind label %19

15:                                               ; preds = %14
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = invoke noundef ptr @_ZN4Cell7getPrevEv(ptr noundef nonnull align 8 dereferenceable(32) %16)
          to label %18 unwind label %19

18:                                               ; preds = %15
  store ptr %17, ptr %6, align 8, !tbaa !5
  br label %11, !llvm.loop !9

19:                                               ; preds = %23, %15, %14
  %20 = landingpad { ptr, i32 }
          cleanup
  %21 = extractvalue { ptr, i32 } %20, 0
  store ptr %21, ptr %7, align 8
  %22 = extractvalue { ptr, i32 } %20, 1
  store i32 %22, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %0) #5
  br label %28

23:                                               ; preds = %11
  invoke void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %0)
          to label %24 unwind label %19

24:                                               ; preds = %23
  store i1 true, ptr %5, align 1
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %25 = load i1, ptr %5, align 1
  br i1 %25, label %27, label %26

26:                                               ; preds = %24
  call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %0) #5
  br label %27

27:                                               ; preds = %26, %24
  ret void

28:                                               ; preds = %19
  %29 = load ptr, ptr %7, align 8
  %30 = load i32, ptr %8, align 4
  %31 = insertvalue { ptr, i32 } poison, ptr %29, 0
  %32 = insertvalue { ptr, i32 } %31, i32 %30, 1
  resume { ptr, i32 } %32
}

declare noundef ptr @_ZN4Cell7getPrevEv(ptr noundef nonnull align 8 dereferenceable(32)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #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 = { 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 #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 = { "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 }

!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"

%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl" }
%"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl" = type { %"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<Cell *, std::allocator<Cell *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

; 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 uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7History17getCheckpointCellEv(ptr noundef nonnull align 8 dereferenceable(224)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7History17getCheckpointPathEv(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::stack") align 8 %0, ptr noundef nonnull align 8 dereferenceable(224) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  tail call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %0)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #5
  %4 = tail call noundef ptr @_ZN7History17getCheckpointCellEv(ptr noundef nonnull align 8 dereferenceable(224) %1)
  br label %5

5:                                                ; preds = %7, %2
  %storemerge = phi ptr [ %4, %2 ], [ %9, %7 ]
  store ptr %storemerge, ptr %3, align 8, !tbaa !5
  %.not = icmp eq ptr %storemerge, null
  br i1 %.not, label %12, label %6

6:                                                ; preds = %5
  invoke void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %0, ptr noundef nonnull align 8 dereferenceable(8) %3)
          to label %7 unwind label %10

7:                                                ; preds = %6
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = invoke noundef ptr @_ZN4Cell7getPrevEv(ptr noundef nonnull align 8 dereferenceable(32) %8)
          to label %5 unwind label %10, !llvm.loop !9

10:                                               ; preds = %7, %6
  %11 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %0) #5
  resume { ptr, i32 } %11

12:                                               ; preds = %5
  call void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %0)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #5
  ret void
}

declare noundef ptr @_ZN4Cell7getPrevEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4CellSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) 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 = { 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 #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 = { "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 }

!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"}


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