; LLVM IR from KoishiDB/Koishi-DB :: src/disk/sstable.ll (ZNK8koishidb7SSTable11NewIteratorEv)

; 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"

%"class.koishidb::SSTable" = type { ptr, ptr, %"class.koishidb::BloomFilter" }
%"class.koishidb::BloomFilter" = type { i32, i32 }
%"struct.koishidb::SSTable::Rep" = type { ptr, ptr, %"class.koishidb::Status", ptr, ptr, ptr }
%"class.koishidb::Status" = type { ptr }

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK8koishidb7SSTable11NewIteratorEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 72) #4
  %7 = getelementptr inbounds %"class.koishidb::SSTable", ptr %5, i32 0, i32 0
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds %"struct.koishidb::SSTable::Rep", ptr %8, i32 0, i32 5
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = getelementptr inbounds %"class.koishidb::SSTable", ptr %5, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = getelementptr inbounds %"struct.koishidb::SSTable::Rep", ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !16
  %15 = getelementptr inbounds %"class.koishidb::SSTable", ptr %5, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = getelementptr inbounds %"struct.koishidb::SSTable::Rep", ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !17
  invoke void @_ZN8koishidb15SSTableIteratorC1EPNS_5BlockEPNS_16RandomAccessFileEPKNS_6OptionE(ptr noundef nonnull align 8 dereferenceable(72) %6, ptr noundef %10, ptr noundef %14, ptr noundef %18)
          to label %19 unwind label %20

19:                                               ; preds = %1
  ret ptr %6

20:                                               ; preds = %1
  %21 = landingpad { ptr, i32 }
          cleanup
  %22 = extractvalue { ptr, i32 } %21, 0
  store ptr %22, ptr %3, align 8
  %23 = extractvalue { ptr, i32 } %21, 1
  store i32 %23, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %6, i64 noundef 72) #5
  br label %24

24:                                               ; preds = %20
  %25 = load ptr, ptr %3, align 8
  %26 = load i32, ptr %4, align 4
  %27 = insertvalue { ptr, i32 } poison, ptr %25, 0
  %28 = insertvalue { ptr, i32 } %27, i32 %26, 1
  resume { ptr, i32 } %28
}

declare void @_ZN8koishidb15SSTableIteratorC1EPNS_5BlockEPNS_16RandomAccessFileEPKNS_6OptionE(ptr noundef nonnull align 8 dereferenceable(72), ptr noundef, ptr noundef, ptr noundef) unnamed_addr #3

attributes #0 = { nobuiltin 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 #1 = { nobuiltin allocsize(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 = { mustprogress 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 = { "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 = { builtin allocsize(0) }
attributes #5 = { builtin 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++ TBAA"}
!9 = !{!10, !6, i64 0}
!10 = !{!"_ZTSN8koishidb7SSTableE", !6, i64 0, !6, i64 8, !11, i64 16}
!11 = !{!"_ZTSN8koishidb11BloomFilterE", !12, i64 0, !12, i64 4}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 40}
!14 = !{!"_ZTSN8koishidb7SSTable3RepE", !6, i64 0, !6, i64 8, !15, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!15 = !{!"_ZTSN8koishidb6StatusE", !6, i64 0}
!16 = !{!14, !6, i64 8}
!17 = !{!14, !6, 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: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull ptr @_ZNK8koishidb7SSTable11NewIteratorEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) local_unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = tail call noalias noundef nonnull dereferenceable(72) ptr @_Znwm(i64 noundef 72) #4
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 40
  %5 = load ptr, ptr %4, align 8, !tbaa !12
  %6 = getelementptr inbounds i8, ptr %3, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !15
  %8 = load ptr, ptr %3, align 8, !tbaa !16
  invoke void @_ZN8koishidb15SSTableIteratorC1EPNS_5BlockEPNS_16RandomAccessFileEPKNS_6OptionE(ptr noundef nonnull align 8 dereferenceable(72) %2, ptr noundef %5, ptr noundef %7, ptr noundef %8)
          to label %9 unwind label %10

9:                                                ; preds = %1
  ret ptr %2

10:                                               ; preds = %1
  %11 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %2, i64 noundef 72) #5
  resume { ptr, i32 } %11
}

declare void @_ZN8koishidb15SSTableIteratorC1EPNS_5BlockEPNS_16RandomAccessFileEPKNS_6OptionE(ptr noundef nonnull align 8 dereferenceable(72), ptr noundef, ptr noundef, ptr noundef) unnamed_addr #3

attributes #0 = { nobuiltin 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 #1 = { nobuiltin allocsize(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 = { mustprogress 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 = { "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 = { builtin allocsize(0) }
attributes #5 = { builtin 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 = !{!"_ZTSN8koishidb7SSTableE", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN8koishidb11BloomFilterE", !11, i64 0, !11, i64 4}
!11 = !{!"int", !8, i64 0}
!12 = !{!13, !7, i64 40}
!13 = !{!"_ZTSN8koishidb7SSTable3RepE", !7, i64 0, !7, i64 8, !14, i64 16, !7, i64 24, !7, i64 32, !7, i64 40}
!14 = !{!"_ZTSN8koishidb6StatusE", !7, i64 0}
!15 = !{!13, !7, i64 8}
!16 = !{!13, !7, i64 0}


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