; LLVM IR from Discngine/fpocket :: src (voronoi_lst)

; 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.node_vertice = type { ptr, ptr, ptr }
%struct.c_lst_vertices = type { ptr, ptr, 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: 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 ptr @c_lst_vertices_drop(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.node_vertice, ptr %6, i32 0, i32 0
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  store ptr %8, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.node_vertice, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %40

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.node_vertice, ptr %14, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.node_vertice, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.node_vertice, ptr %19, i32 0, i32 1
  store ptr %16, ptr %20, align 8, !tbaa !11
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.node_vertice, ptr %21, i32 0, i32 1
  %23 = load ptr, ptr %22, align 8, !tbaa !11
  %24 = icmp eq ptr %23, null
  br i1 %24, label %25, label %31

25:                                               ; preds = %13
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.node_vertice, ptr %26, i32 0, i32 0
  %28 = load ptr, ptr %27, align 8, !tbaa !9
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.c_lst_vertices, ptr %29, i32 0, i32 0
  store ptr %28, ptr %30, align 8, !tbaa !12
  br label %39

31:                                               ; preds = %13
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.node_vertice, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !9
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.node_vertice, ptr %35, i32 0, i32 1
  %37 = load ptr, ptr %36, align 8, !tbaa !11
  %38 = getelementptr inbounds %struct.node_vertice, ptr %37, i32 0, i32 0
  store ptr %34, ptr %38, align 8, !tbaa !9
  br label %39

39:                                               ; preds = %31, %25
  br label %56

40:                                               ; preds = %2
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.node_vertice, ptr %41, i32 0, i32 1
  %43 = load ptr, ptr %42, align 8, !tbaa !11
  %44 = icmp ne ptr %43, null
  br i1 %44, label %45, label %50

45:                                               ; preds = %40
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.node_vertice, ptr %46, i32 0, i32 1
  %48 = load ptr, ptr %47, align 8, !tbaa !11
  %49 = getelementptr inbounds %struct.node_vertice, ptr %48, i32 0, i32 0
  store ptr null, ptr %49, align 8, !tbaa !9
  br label %55

50:                                               ; preds = %40
  %51 = load ptr, ptr %3, align 8, !tbaa !5
  %52 = getelementptr inbounds %struct.c_lst_vertices, ptr %51, i32 0, i32 0
  store ptr null, ptr %52, align 8, !tbaa !12
  %53 = load ptr, ptr %3, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.c_lst_vertices, ptr %53, i32 0, i32 1
  store ptr null, ptr %54, align 8, !tbaa !15
  br label %55

55:                                               ; preds = %50, %45
  br label %56

56:                                               ; preds = %55, %39
  %57 = load ptr, ptr %3, align 8, !tbaa !5
  %58 = getelementptr inbounds %struct.c_lst_vertices, ptr %57, i32 0, i32 3
  %59 = load i64, ptr %58, align 8, !tbaa !16
  %60 = sub i64 %59, 1
  store i64 %60, ptr %58, align 8, !tbaa !16
  %61 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret ptr %61
}

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 = { 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 = !{!"node_vertice", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!10, !6, i64 8}
!12 = !{!13, !6, i64 0}
!13 = !{!"c_lst_vertices", !6, i64 0, !6, i64 8, !6, i64 16, !14, i64 24}
!14 = !{!"long", !7, i64 0}
!15 = !{!13, !6, i64 8}
!16 = !{!13, !14, i64 24}


; 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 nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local ptr @c_lst_vertices_drop(ptr nocapture noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %1, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !10
  br i1 %.not, label %11, label %6

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %5, ptr %7, align 8, !tbaa !10
  %8 = icmp eq ptr %5, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %6
  store ptr %3, ptr %0, align 8, !tbaa !11
  br label %14

10:                                               ; preds = %6
  store ptr %3, ptr %5, align 8, !tbaa !5
  br label %14

11:                                               ; preds = %2
  %.not17 = icmp eq ptr %5, null
  br i1 %.not17, label %13, label %12

12:                                               ; preds = %11
  store ptr null, ptr %5, align 8, !tbaa !5
  br label %14

13:                                               ; preds = %11
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %0, i8 0, i64 16, i1 false)
  br label %14

14:                                               ; preds = %12, %13, %9, %10
  %15 = getelementptr inbounds i8, ptr %0, i64 24
  %16 = load i64, ptr %15, align 8, !tbaa !14
  %17 = add i64 %16, -1
  store i64 %17, ptr %15, align 8, !tbaa !14
  ret ptr %3
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: readwrite, inaccessiblemem: none) 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 nounwind willreturn memory(argmem: write) }

!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, !7, i64 0}
!6 = !{!"node_vertice", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !7, i64 0}
!12 = !{!"c_lst_vertices", !7, i64 0, !7, i64 8, !7, i64 16, !13, i64 24}
!13 = !{!"long", !8, i64 0}
!14 = !{!12, !13, i64 24}


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