; LLVM IR from seppo0010/rlite :: src (page_skiplist)

; 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.rl_skiplist = type { i64, i64, i64, i64 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @rl_skiplist_malloc(ptr noundef, ptr noundef) #0

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @rl_skiplist_deserialize(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = call i32 @rl_skiplist_malloc(ptr noundef %11, ptr noundef %9)
  store i32 %12, ptr %10, align 4, !tbaa !9
  %13 = load i32, ptr %10, align 4, !tbaa !9
  %14 = icmp ne i32 0, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %4
  br label %43

16:                                               ; preds = %4
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 0
  %19 = call i32 @get_4bytes(ptr noundef %18)
  %20 = sext i32 %19 to i64
  %21 = load ptr, ptr %9, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.rl_skiplist, ptr %21, i32 0, i32 0
  store i64 %20, ptr %22, align 8, !tbaa !11
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %23, i64 4
  %25 = call i32 @get_4bytes(ptr noundef %24)
  %26 = sext i32 %25 to i64
  %27 = load ptr, ptr %9, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.rl_skiplist, ptr %27, i32 0, i32 1
  store i64 %26, ptr %28, align 8, !tbaa !14
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i64 8
  %31 = call i32 @get_4bytes(ptr noundef %30)
  %32 = sext i32 %31 to i64
  %33 = load ptr, ptr %9, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.rl_skiplist, ptr %33, i32 0, i32 2
  store i64 %32, ptr %34, align 8, !tbaa !15
  %35 = load ptr, ptr %8, align 8, !tbaa !5
  %36 = getelementptr inbounds i8, ptr %35, i64 12
  %37 = call i32 @get_4bytes(ptr noundef %36)
  %38 = sext i32 %37 to i64
  %39 = load ptr, ptr %9, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.rl_skiplist, ptr %39, i32 0, i32 3
  store i64 %38, ptr %40, align 8, !tbaa !16
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %41, ptr %42, align 8, !tbaa !5
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %43

43:                                               ; preds = %16, %15
  %44 = load i32, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  ret i32 %44
}

declare i32 @get_4bytes(ptr noundef) #2

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"", !13, i64 0, !13, i64 8, !13, i64 16, !13, i64 24}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 8}
!15 = !{!12, !13, i64 16}
!16 = !{!12, !13, 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: nounwind uwtable
declare dso_local i32 @rl_skiplist_malloc(ptr noundef, ptr noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local i32 @rl_skiplist_deserialize(ptr noundef %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef readnone %2, ptr noundef %3) local_unnamed_addr #0 {
  %5 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %6 = call i32 @rl_skiplist_malloc(ptr noundef %0, ptr noundef nonnull %5)
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %7, label %26

7:                                                ; preds = %4
  %8 = call i32 @get_4bytes(ptr noundef %3) #3
  %9 = sext i32 %8 to i64
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store i64 %9, ptr %10, align 8, !tbaa !9
  %11 = getelementptr inbounds i8, ptr %3, i64 4
  %12 = call i32 @get_4bytes(ptr noundef nonnull %11) #3
  %13 = sext i32 %12 to i64
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %14, i64 8
  store i64 %13, ptr %15, align 8, !tbaa !12
  %16 = getelementptr inbounds i8, ptr %3, i64 8
  %17 = call i32 @get_4bytes(ptr noundef nonnull %16) #3
  %18 = sext i32 %17 to i64
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i64 16
  store i64 %18, ptr %20, align 8, !tbaa !13
  %21 = getelementptr inbounds i8, ptr %3, i64 12
  %22 = call i32 @get_4bytes(ptr noundef nonnull %21) #3
  %23 = sext i32 %22 to i64
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %24, i64 24
  store i64 %23, ptr %25, align 8, !tbaa !14
  store ptr %24, ptr %1, align 8, !tbaa !5
  br label %26

26:                                               ; preds = %4, %7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  ret i32 %6
}

declare i32 @get_4bytes(ptr noundef) local_unnamed_addr #2

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 = { mustprogress 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, !11, i64 0}
!10 = !{!"", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!10, !11, i64 16}
!14 = !{!10, !11, i64 24}


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