; LLVM IR from chkn/logdb :: src (logdb_log)

; 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.logdb_log_t = type { i32, ptr, ptr }

; 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: nounwind uwtable
define dso_local i64 @logdb_log_read_entry(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca i64, 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 i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = call i64 @logdb_log_offset(i32 noundef %11)
  store i64 %12, ptr %8, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.logdb_log_t, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !13
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load i64, ptr %8, align 8, !tbaa !11
  %18 = call i64 @logdb_io_pread(i32 noundef %15, ptr noundef %16, i64 noundef 2, i64 noundef %17)
  store i64 %18, ptr %9, align 8, !tbaa !11
  %19 = load i64, ptr %9, align 8, !tbaa !11
  %20 = icmp sgt i64 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %3
  store i64 -1, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %30

22:                                               ; preds = %3
  %23 = load i64, ptr %9, align 8, !tbaa !11
  %24 = icmp eq i64 %23, -1
  br i1 %24, label %25, label %26

25:                                               ; preds = %22
  br label %28

26:                                               ; preds = %22
  %27 = load i64, ptr %8, align 8, !tbaa !11
  br label %28

28:                                               ; preds = %26, %25
  %29 = phi i64 [ -1, %25 ], [ %27, %26 ]
  store i64 %29, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %30

30:                                               ; preds = %28, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %31 = load i64, ptr %4, align 8
  ret i64 %31
}

; Function Attrs: nounwind uwtable
declare hidden i64 @logdb_log_offset(i32 noundef) #1

declare i64 @logdb_io_pread(i32 noundef, ptr noundef, i64 noundef, i64 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !10, i64 0}
!14 = !{!"", !10, i64 0, !6, i64 8, !7, i64 16}


; 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 i64 @logdb_log_read_entry(ptr nocapture noundef readonly %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call i64 @logdb_log_offset(i32 noundef %2)
  %5 = load i32, ptr %0, align 8, !tbaa !5
  %6 = tail call i64 @logdb_io_pread(i32 noundef %5, ptr noundef %1, i64 noundef 2, i64 noundef %4) #2
  %7 = icmp sgt i64 %6, 0
  %8 = icmp eq i64 %6, -1
  %9 = or i1 %7, %8
  %.0 = select i1 %9, i64 -1, i64 %4
  ret i64 %.0
}

; Function Attrs: nounwind uwtable
declare hidden i64 @logdb_log_offset(i32 noundef) local_unnamed_addr #0

declare i64 @logdb_io_pread(i32 noundef, ptr noundef, i64 noundef, i64 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !10, i64 8, !8, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}


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