; LLVM IR from PaddlePaddle/Paddle :: paddle/pir/src/core/region.ll (ZN3pir6Region8TakeBodyEOS0_)

; 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"

%"struct.std::_List_iterator" = type { ptr }
%"class.pir::Region" = type { ptr, %"class.std::__cxx11::list" }
%"class.std::__cxx11::list" = type { %"class.std::__cxx11::_List_base" }
%"class.std::__cxx11::_List_base" = type { %"struct.std::__cxx11::_List_base<pir::Block *, std::allocator<pir::Block *>>::_List_impl" }
%"struct.std::__cxx11::_List_base<pir::Block *, std::allocator<pir::Block *>>::_List_impl" = type { %"struct.std::__detail::_List_node_header" }
%"struct.std::__detail::_List_node_header" = type { %"struct.std::__detail::_List_node_base", i64 }
%"struct.std::__detail::_List_node_base" = type { ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3pir6Region5clearEv(ptr noundef nonnull align 8 dereferenceable(32)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

declare void @_ZN3pir5Block9SetParentEPNS_6RegionE(ptr noundef nonnull align 8 dereferenceable(120), ptr noundef) #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3pir6Region8TakeBodyEOS0_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"struct.std::_List_iterator", align 8
  %7 = alloca %"struct.std::_List_iterator", align 8
  %8 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %3, align 8
  call void @_ZN3pir6Region5clearEv(ptr noundef nonnull align 8 dereferenceable(32) %9)
  %10 = getelementptr inbounds %"class.pir::Region", ptr %9, i32 0, i32 1
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %"class.pir::Region", ptr %11, i32 0, i32 1
  call void @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE4swapERS5_(ptr noundef nonnull align 8 dereferenceable(24) %10, ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %13 = getelementptr inbounds %"class.pir::Region", ptr %9, i32 0, i32 1
  store ptr %13, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = call ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #4
  %16 = getelementptr inbounds %"struct.std::_List_iterator", ptr %6, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %17) #4
  %19 = getelementptr inbounds %"struct.std::_List_iterator", ptr %7, i32 0, i32 0
  store ptr %18, ptr %19, align 8
  br label %20

20:                                               ; preds = %27, %2
  %21 = call noundef zeroext i1 @_ZStneRKSt14_List_iteratorIPN3pir5BlockEES5_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br i1 %21, label %23, label %22

22:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %29

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt14_List_iteratorIPN3pir5BlockEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  store ptr %24, ptr %8, align 8, !tbaa !5
  %25 = load ptr, ptr %8, align 8, !tbaa !5
  %26 = load ptr, ptr %25, align 8, !tbaa !5
  call void @_ZN3pir5Block9SetParentEPNS_6RegionE(ptr noundef nonnull align 8 dereferenceable(120) %26, ptr noundef %9)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  br label %27

27:                                               ; preds = %23
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt14_List_iteratorIPN3pir5BlockEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br label %20

29:                                               ; preds = %22
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE4swapERS5_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt14_List_iteratorIPN3pir5BlockEES5_(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(8) ptr @_ZNKSt14_List_iteratorIPN3pir5BlockEEdeEv(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 @_ZNSt14_List_iteratorIPN3pir5BlockEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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"}


; 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"

%"struct.std::_List_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3pir6Region5clearEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

declare void @_ZN3pir5Block9SetParentEPNS_6RegionE(ptr noundef nonnull align 8 dereferenceable(120), ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3pir6Region8TakeBodyEOS0_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %1) local_unnamed_addr #0 align 2 {
  %3 = alloca %"struct.std::_List_iterator", align 8
  %4 = alloca %"struct.std::_List_iterator", align 8
  tail call void @_ZN3pir6Region5clearEv(ptr noundef nonnull align 8 dereferenceable(32) %0)
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  tail call void @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE4swapERS5_(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 8 dereferenceable(24) %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %7 = tail call ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  store ptr %7, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %8 = tail call ptr @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  store ptr %8, ptr %4, align 8
  %9 = call noundef zeroext i1 @_ZStneRKSt14_List_iteratorIPN3pir5BlockEES5_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %9, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret void

.lr.ph:                                           ; preds = %2, %.lr.ph
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt14_List_iteratorIPN3pir5BlockEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %11 = load ptr, ptr %10, align 8, !tbaa !5
  call void @_ZN3pir5Block9SetParentEPNS_6RegionE(ptr noundef nonnull align 8 dereferenceable(120) %11, ptr noundef nonnull %0)
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt14_List_iteratorIPN3pir5BlockEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %13 = call noundef zeroext i1 @_ZStneRKSt14_List_iteratorIPN3pir5BlockEES5_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %13, label %.lr.ph, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx114listIPN3pir5BlockESaIS3_EE4swapERS5_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt14_List_iteratorIPN3pir5BlockEES5_(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(8) ptr @_ZNKSt14_List_iteratorIPN3pir5BlockEEdeEv(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 @_ZNSt14_List_iteratorIPN3pir5BlockEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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"}


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