; LLVM IR from 48d31kh413k/1337-push_swap-42 :: libft (ft_lstclear_bonus)

; 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.s_list = type { ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ft_lstclear(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  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) #3
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %10, label %9

9:                                                ; preds = %2
  store i32 1, ptr %6, align 4
  br label %26

10:                                               ; preds = %2
  br label %11

11:                                               ; preds = %15, %10
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %15, label %25

15:                                               ; preds = %11
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.s_list, ptr %17, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  store ptr %19, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load ptr, ptr %20, align 8, !tbaa !5
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  call void @ft_lstdelone(ptr noundef %21, ptr noundef %22)
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %23, ptr %24, align 8, !tbaa !5
  br label %11, !llvm.loop !11

25:                                               ; preds = %11
  store i32 0, ptr %6, align 4
  br label %26

26:                                               ; preds = %25, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  %27 = load i32, ptr %6, align 4
  switch i32 %27, label %29 [
    i32 0, label %28
    i32 1, label %28
  ]

28:                                               ; preds = %26, %26
  ret void

29:                                               ; preds = %26
  unreachable
}

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

declare void @ft_lstdelone(ptr noundef, ptr noundef) #2

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 8}
!10 = !{!"s_list", !6, i64 0, !6, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"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: nounwind uwtable
define dso_local void @ft_lstclear(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %thread-pre-split

thread-pre-split:                                 ; preds = %2
  %.pr = load ptr, ptr %0, align 8, !tbaa !5
  %.not78 = icmp eq ptr %.pr, null
  br i1 %.not78, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %thread-pre-split, %.lr.ph
  %3 = phi ptr [ %5, %.lr.ph ], [ %.pr, %thread-pre-split ]
  %4 = getelementptr inbounds i8, ptr %3, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  tail call void @ft_lstdelone(ptr noundef nonnull %3, ptr noundef %1) #2
  store ptr %5, ptr %0, align 8, !tbaa !5
  %.not7 = icmp eq ptr %5, null
  br i1 %.not7, label %.loopexit, label %.lr.ph, !llvm.loop !11

.loopexit:                                        ; preds = %.lr.ph, %thread-pre-split, %2
  ret void
}

declare void @ft_lstdelone(ptr noundef, ptr noundef) local_unnamed_addr #1

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 = { 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 8}
!10 = !{!"s_list", !6, i64 0, !6, i64 8}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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