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

; 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_iter_t = type { ptr, %struct.logdb_lease_t, %struct.logdb_data_header_t, ptr, ptr }
%struct.logdb_lease_t = type { ptr, i32, i64, i32, i32 }
%struct.logdb_data_header_t = type { i32, i32 }

; 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 ptr @logdb_iter_current_key(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %5, ptr %3, align 8, !tbaa !5
  store ptr %5, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.logdb_iter_t, ptr %6, i32 0, i32 3
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = icmp ne ptr %8, null
  br i1 %9, label %19, label %10

10:                                               ; preds = %1
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.logdb_iter_t, ptr %12, i32 0, i32 2
  %14 = getelementptr inbounds %struct.logdb_data_header_t, ptr %13, i32 0, i32 0
  %15 = load i32, ptr %14, align 8, !tbaa !15
  %16 = call ptr @logdb_iter_read_buf(ptr noundef %11, i32 noundef %15)
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.logdb_iter_t, ptr %17, i32 0, i32 3
  store ptr %16, ptr %18, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %10, %1
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.logdb_iter_t, ptr %20, i32 0, i32 3
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret ptr %22
}

; Function Attrs: nounwind uwtable
declare hidden ptr @logdb_iter_read_buf(ptr noundef, i32 noundef) #1

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 = { 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, !6, i64 48}
!10 = !{!"", !6, i64 0, !11, i64 8, !14, i64 40, !6, i64 48, !6, i64 56}
!11 = !{!"", !6, i64 0, !12, i64 8, !13, i64 16, !12, i64 24, !12, i64 28}
!12 = !{!"int", !7, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{!"", !12, i64 0, !12, i64 4}
!15 = !{!10, !12, i64 40}


; 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 ptr @logdb_iter_current_key(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 48
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %4, label %8

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  %6 = load i32, ptr %5, align 8, !tbaa !14
  %7 = tail call ptr @logdb_iter_read_buf(ptr noundef nonnull %0, i32 noundef %6)
  store ptr %7, ptr %2, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %4, %1
  %9 = phi ptr [ %7, %4 ], [ %3, %1 ]
  ret ptr %9
}

; Function Attrs: nounwind uwtable
declare hidden ptr @logdb_iter_read_buf(ptr noundef, i32 noundef) local_unnamed_addr #0

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" }

!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 48}
!6 = !{!"", !7, i64 0, !10, i64 8, !13, i64 40, !7, i64 48, !7, i64 56}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"", !7, i64 0, !11, i64 8, !12, i64 16, !11, i64 24, !11, i64 28}
!11 = !{!"int", !8, i64 0}
!12 = !{!"long", !8, i64 0}
!13 = !{!"", !11, i64 0, !11, i64 4}
!14 = !{!6, !11, i64 40}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass