; LLVM IR from fmela/libdict :: src (hb_tree)

; 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.dict_remove_result = type { ptr, ptr, i8 }
%struct.hb_node = type { ptr, ptr, %union.anon, ptr, ptr }
%union.anon = type { i64 }

; 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: nounwind uwtable
define dso_local void @hb_tree_remove(ptr dead_on_unwind noalias writable sret(%struct.dict_remove_result) align 8 %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %1, ptr %4, align 8, !tbaa !5
  store ptr %2, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call ptr @tree_search_node(ptr noundef %8, ptr noundef %9)
  store ptr %10, ptr %6, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %17, label %13

13:                                               ; preds = %3
  call void @llvm.memset.p0.i64(ptr align 8 %0, i8 0, i64 24, i1 false)
  %14 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 0
  %15 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 1
  %16 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 2
  store i32 1, ptr %7, align 4
  br label %29

17:                                               ; preds = %3
  %18 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 0
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.hb_node, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  store ptr %21, ptr %18, align 8, !tbaa !11
  %22 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 1
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.hb_node, ptr %23, i32 0, i32 1
  %25 = load ptr, ptr %24, align 8, !tbaa !14
  store ptr %25, ptr %22, align 8, !tbaa !15
  %26 = getelementptr inbounds %struct.dict_remove_result, ptr %0, i32 0, i32 2
  store i8 1, ptr %26, align 8, !tbaa !16
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  call void @remove_node(ptr noundef %27, ptr noundef %28)
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %17, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  ret void
}

declare ptr @tree_search_node(ptr noundef, ptr noundef) #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

; Function Attrs: nounwind uwtable
declare hidden void @remove_node(ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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/C++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"hb_node", !6, i64 0, !6, i64 8, !7, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!12, !6, i64 0}
!12 = !{!"", !6, i64 0, !6, i64 8, !13, i64 16}
!13 = !{!"_Bool", !7, i64 0}
!14 = !{!10, !6, i64 8}
!15 = !{!12, !6, i64 8}
!16 = !{!12, !13, i64 16}


; 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.dict_remove_result = type { ptr, ptr, i8 }

; Function Attrs: nounwind uwtable
define dso_local void @hb_tree_remove(ptr dead_on_unwind noalias nocapture writable writeonly sret(%struct.dict_remove_result) align 8 %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call ptr @tree_search_node(ptr noundef %1, ptr noundef %2) #3
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %5, label %6

5:                                                ; preds = %3
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %0, i8 0, i64 24, i1 false)
  br label %9

6:                                                ; preds = %3
  %7 = load <2 x ptr>, ptr %4, align 8, !tbaa !5
  store <2 x ptr> %7, ptr %0, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  store i8 1, ptr %8, align 8, !tbaa !9
  tail call void @remove_node(ptr noundef %1, ptr noundef nonnull %4)
  br label %9

9:                                                ; preds = %6, %5
  ret void
}

declare ptr @tree_search_node(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
declare hidden void @remove_node(ptr noundef, ptr noundef) local_unnamed_addr #0

attributes #0 = { 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 = { "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 nocallback nofree nounwind willreturn memory(argmem: write) }
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/C++ TBAA"}
!9 = !{!10, !11, i64 16}
!10 = !{!"", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"_Bool", !7, i64 0}


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