; LLVM IR from erthink/libmdbx :: src (meta)

; 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"

; Function Attrs: nounwind uwtable
declare dso_local i64 @meta_txnid(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: inlinehint nounwind willreturn memory(read) uwtable
declare hidden ptr @page_meta(ptr noundef) #2

; Function Attrs: inlinehint nounwind willreturn memory(read) uwtable
declare hidden ptr @pgno2page(ptr noundef, i64 noundef) #2

; 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 i64 @recent_committed_txnid(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = call ptr @pgno2page(ptr noundef %6, i64 noundef 0) #4
  %8 = call ptr @page_meta(ptr noundef %7) #4
  %9 = call i64 @meta_txnid(ptr noundef %8)
  store i64 %9, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = call ptr @pgno2page(ptr noundef %10, i64 noundef 1) #4
  %12 = call ptr @page_meta(ptr noundef %11) #4
  %13 = call i64 @meta_txnid(ptr noundef %12)
  store i64 %13, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = call ptr @pgno2page(ptr noundef %14, i64 noundef 2) #4
  %16 = call ptr @page_meta(ptr noundef %15) #4
  %17 = call i64 @meta_txnid(ptr noundef %16)
  store i64 %17, ptr %5, align 8, !tbaa !9
  %18 = load i64, ptr %3, align 8, !tbaa !9
  %19 = load i64, ptr %4, align 8, !tbaa !9
  %20 = icmp ugt i64 %18, %19
  br i1 %20, label %21, label %31

21:                                               ; preds = %1
  %22 = load i64, ptr %3, align 8, !tbaa !9
  %23 = load i64, ptr %5, align 8, !tbaa !9
  %24 = icmp ugt i64 %22, %23
  br i1 %24, label %25, label %27

25:                                               ; preds = %21
  %26 = load i64, ptr %3, align 8, !tbaa !9
  br label %29

27:                                               ; preds = %21
  %28 = load i64, ptr %5, align 8, !tbaa !9
  br label %29

29:                                               ; preds = %27, %25
  %30 = phi i64 [ %26, %25 ], [ %28, %27 ]
  br label %41

31:                                               ; preds = %1
  %32 = load i64, ptr %4, align 8, !tbaa !9
  %33 = load i64, ptr %5, align 8, !tbaa !9
  %34 = icmp ugt i64 %32, %33
  br i1 %34, label %35, label %37

35:                                               ; preds = %31
  %36 = load i64, ptr %4, align 8, !tbaa !9
  br label %39

37:                                               ; preds = %31
  %38 = load i64, ptr %5, align 8, !tbaa !9
  br label %39

39:                                               ; preds = %37, %35
  %40 = phi i64 [ %36, %35 ], [ %38, %37 ]
  br label %41

41:                                               ; preds = %39, %29
  %42 = phi i64 [ %30, %29 ], [ %40, %39 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i64 %42
}

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 = { inlinehint nounwind willreturn memory(read) 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 = { nounwind }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!"long", !7, i64 0}


; 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 i64 @meta_txnid(ptr noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare hidden ptr @page_meta(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare hidden ptr @pgno2page(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i64 @recent_committed_txnid(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @pgno2page(ptr noundef %0, i64 noundef 0) #3
  %3 = tail call ptr @page_meta(ptr noundef %2) #3
  %4 = tail call i64 @meta_txnid(ptr noundef %3)
  %5 = tail call ptr @pgno2page(ptr noundef %0, i64 noundef 1) #3
  %6 = tail call ptr @page_meta(ptr noundef %5) #3
  %7 = tail call i64 @meta_txnid(ptr noundef %6)
  %8 = tail call ptr @pgno2page(ptr noundef %0, i64 noundef 2) #3
  %9 = tail call ptr @page_meta(ptr noundef %8) #3
  %10 = tail call i64 @meta_txnid(ptr noundef %9)
  %. = tail call i64 @llvm.umax.i64(i64 %4, i64 %7)
  %11 = tail call i64 @llvm.umax.i64(i64 %., i64 %10)
  ret i64 %11
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #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 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { nounwind willreturn memory(read) }

!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)"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass