; LLVM IR from erthink/libmdbx :: src (api-cold)

; 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: cold nounwind optsize willreturn memory(read) uwtable
declare dso_local i64 @mdbx_default_pagesize() #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(none) uwtable
declare hidden zeroext i1 @is_powerof2(i64 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(none)
declare i64 @llvm.expect.i64(i64, i64) #3

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

; Function Attrs: cold nounwind optsize willreturn memory(none) uwtable
define dso_local i64 @mdbx_limits_dbsize_max(i64 noundef %0) #4 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  %5 = load i64, ptr %3, align 8, !tbaa !5
  %6 = icmp slt i64 %5, 1
  br i1 %6, label %7, label %9

7:                                                ; preds = %1
  %8 = call i64 @mdbx_default_pagesize() #5
  store i64 %8, ptr %3, align 8, !tbaa !5
  br label %29

9:                                                ; preds = %1
  %10 = load i64, ptr %3, align 8, !tbaa !5
  %11 = icmp slt i64 %10, 256
  br i1 %11, label %19, label %12

12:                                               ; preds = %9
  %13 = load i64, ptr %3, align 8, !tbaa !5
  %14 = icmp sgt i64 %13, 65536
  br i1 %14, label %19, label %15

15:                                               ; preds = %12
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = call zeroext i1 @is_powerof2(i64 noundef %16) #6
  %18 = xor i1 %17, true
  br label %19

19:                                               ; preds = %15, %12, %9
  %20 = phi i1 [ true, %12 ], [ true, %9 ], [ %18, %15 ]
  %21 = xor i1 %20, true
  %22 = xor i1 %21, true
  %23 = zext i1 %22 to i32
  %24 = sext i32 %23 to i64
  %25 = call i64 @llvm.expect.i64(i64 %24, i64 0)
  %26 = icmp ne i64 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %19
  store i64 -1, ptr %2, align 8
  br label %39

28:                                               ; preds = %19
  br label %29

29:                                               ; preds = %28, %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #7
  %30 = load i64, ptr %3, align 8, !tbaa !5
  %31 = mul i64 2147483648, %30
  store i64 %31, ptr %4, align 8, !tbaa !5
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = icmp ult i64 %32, 140737488355328
  br i1 %33, label %34, label %36

34:                                               ; preds = %29
  %35 = load i64, ptr %4, align 8, !tbaa !5
  br label %37

36:                                               ; preds = %29
  br label %37

37:                                               ; preds = %36, %34
  %38 = phi i64 [ %35, %34 ], [ 140737488355328, %36 ]
  store i64 %38, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #7
  br label %39

39:                                               ; preds = %37, %27
  %40 = load i64, ptr %2, align 8
  ret i64 %40
}

attributes #0 = { cold nounwind optsize 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint nounwind willreturn memory(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 #3 = { nocallback nofree nosync nounwind willreturn memory(none) }
attributes #4 = { cold nounwind optsize willreturn memory(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 #5 = { cold nounwind willreturn memory(read) }
attributes #6 = { nounwind willreturn memory(none) }
attributes #7 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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: cold mustprogress nofree nounwind optsize willreturn memory(read) uwtable
declare dso_local i64 @mdbx_default_pagesize() local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nofree nosync nounwind willreturn memory(none) uwtable
declare hidden zeroext i1 @is_powerof2(i64 noundef) local_unnamed_addr #1

; Function Attrs: cold mustprogress nofree nosync nounwind optsize willreturn memory(none) uwtable
define dso_local i64 @mdbx_limits_dbsize_max(i64 noundef %0) local_unnamed_addr #2 {
  %2 = icmp slt i64 %0, 1
  br i1 %2, label %3, label %5

3:                                                ; preds = %1
  %4 = tail call i64 @mdbx_default_pagesize() #4
  br label %9

5:                                                ; preds = %1
  %6 = add nsw i64 %0, -65537
  %or.cond = icmp ult i64 %6, -65281
  br i1 %or.cond, label %.critedge, label %7, !prof !5

7:                                                ; preds = %5
  %8 = tail call zeroext i1 @is_powerof2(i64 noundef %0) #5
  br i1 %8, label %9, label %.critedge, !prof !6

9:                                                ; preds = %7, %3
  %.09 = phi i64 [ %4, %3 ], [ %0, %7 ]
  %10 = shl i64 %.09, 31
  %11 = tail call i64 @llvm.umin.i64(i64 %10, i64 140737488355328)
  br label %.critedge

.critedge:                                        ; preds = %5, %7, %9
  %.0 = phi i64 [ %11, %9 ], [ -1, %7 ], [ -1, %5 ]
  ret i64 %.0
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umin.i64(i64, i64) #3

attributes #0 = { cold mustprogress nofree nounwind optsize 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 #1 = { inlinehint mustprogress nofree nosync nounwind willreturn memory(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 #2 = { cold mustprogress nofree nosync nounwind optsize willreturn memory(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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { cold nounwind willreturn memory(read) }
attributes #5 = { nounwind willreturn memory(none) }

!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 = !{!"branch_weights", i32 4001, i32 4000000}
!6 = !{!"branch_weights", !"expected", i32 2000, i32 1}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,LowerExpectIntrinsicPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass