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

; 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"

@.str.38 = external hidden unnamed_addr constant [9 x i8], align 1
@mdbx_strerror.buf = external hidden global [32 x i8], align 16

; 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: cold nounwind optsize willreturn memory(read) uwtable
declare dso_local ptr @mdbx_liberr2str(i32 noundef) #1

; Function Attrs: nounwind
declare i32 @snprintf(ptr noundef, i64 noundef, ptr noundef, ...) #2

; Function Attrs: cold nounwind optsize uwtable
define dso_local ptr @mdbx_strerror(i32 noundef %0) #3 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = call ptr @mdbx_liberr2str(i32 noundef %4) #5
  store ptr %5, ptr %3, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !9
  %7 = icmp ne ptr %6, null
  br i1 %7, label %21, label %8

8:                                                ; preds = %1
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %11, label %14

11:                                               ; preds = %8
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = call ptr @strerror(i32 noundef %12) #4
  store ptr %13, ptr %3, align 8, !tbaa !9
  br label %14

14:                                               ; preds = %11, %8
  %15 = load ptr, ptr %3, align 8, !tbaa !9
  %16 = icmp ne ptr %15, null
  br i1 %16, label %20, label %17

17:                                               ; preds = %14
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef @mdbx_strerror.buf, i64 noundef 31, ptr noundef @.str.38, i32 noundef %18) #4
  store ptr @mdbx_strerror.buf, ptr %3, align 8, !tbaa !9
  br label %20

20:                                               ; preds = %17, %14
  br label %21

21:                                               ; preds = %20, %1
  %22 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret ptr %22
}

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nounwind "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 = { cold nounwind optsize 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 #4 = { nounwind }
attributes #5 = { cold 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@.str.38 = external hidden unnamed_addr constant [9 x i8], align 1
@mdbx_strerror.buf = external hidden global [32 x i8], align 16

; Function Attrs: cold mustprogress nofree nounwind optsize willreturn memory(read) uwtable
declare dso_local ptr @mdbx_liberr2str(i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @snprintf(ptr noalias nocapture noundef writeonly, i64 noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: cold nounwind optsize uwtable
define dso_local nonnull ptr @mdbx_strerror(i32 noundef %0) local_unnamed_addr #2 {
  %2 = tail call ptr @mdbx_liberr2str(i32 noundef %0) #4
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %3, label %8

3:                                                ; preds = %1
  %4 = icmp sgt i32 %0, 0
  br i1 %4, label %5, label %.thread

5:                                                ; preds = %3
  %6 = tail call ptr @strerror(i32 noundef %0) #5
  %.not9 = icmp eq ptr %6, null
  br i1 %.not9, label %.thread, label %8

.thread:                                          ; preds = %3, %5
  %7 = tail call i32 (ptr, i64, ptr, ...) @snprintf(ptr noundef nonnull dereferenceable(1) @mdbx_strerror.buf, i64 noundef 31, ptr noundef nonnull @.str.38, i32 noundef %0) #5
  br label %8

8:                                                ; preds = %5, %.thread, %1
  %.1 = phi ptr [ %2, %1 ], [ %6, %5 ], [ @mdbx_strerror.buf, %.thread ]
  ret ptr %.1
}

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) local_unnamed_addr #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 = { nofree nounwind "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 nounwind optsize 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 "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 #4 = { cold nounwind willreturn memory(read) }
attributes #5 = { 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)"}


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