; LLVM IR from cruppstahl/upscaledb :: src/4txn/txn_cursor.ll (ZN9upscaledb9TxnCursor5cloneEPKS0_)

; 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.upscaledb::TxnCursor" = type { %"struct.upscaledb::TxnCursorState" }
%"struct.upscaledb::TxnCursorState" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN9upscaledb9TxnCursor5cloneEPKS0_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  %6 = getelementptr inbounds %"struct.upscaledb::TxnCursor", ptr %5, i32 0, i32 0
  %7 = getelementptr inbounds %"struct.upscaledb::TxnCursorState", ptr %6, i32 0, i32 1
  store ptr null, ptr %7, align 8, !tbaa !9
  %8 = getelementptr inbounds %"struct.upscaledb::TxnCursor", ptr %5, i32 0, i32 0
  %9 = getelementptr inbounds %"struct.upscaledb::TxnCursorState", ptr %8, i32 0, i32 2
  store ptr null, ptr %9, align 8, !tbaa !12
  %10 = getelementptr inbounds %"struct.upscaledb::TxnCursor", ptr %5, i32 0, i32 0
  %11 = getelementptr inbounds %"struct.upscaledb::TxnCursorState", ptr %10, i32 0, i32 3
  store ptr null, ptr %11, align 8, !tbaa !13
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call noundef zeroext i1 @_ZNK9upscaledb9TxnCursor6is_nilEv(ptr noundef nonnull align 8 dereferenceable(32) %12)
  br i1 %13, label %17, label %14

14:                                               ; preds = %2
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = call noundef ptr @_ZNK9upscaledb9TxnCursor14get_coupled_opEv(ptr noundef nonnull align 8 dereferenceable(32) %15)
  call void @_ZN9upscaledb9TxnCursor9couple_toEPNS_12TxnOperationE(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef %16)
  br label %17

17:                                               ; preds = %14, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK9upscaledb9TxnCursor6is_nilEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN9upscaledb9TxnCursor9couple_toEPNS_12TxnOperationE(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9upscaledb9TxnCursor14get_coupled_opEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

attributes #0 = { 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 #1 = { mustprogress 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"_ZTSN9upscaledb9TxnCursorE", !11, i64 0}
!11 = !{!"_ZTSN9upscaledb14TxnCursorStateE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!12 = !{!10, !6, i64 16}
!13 = !{!10, !6, i64 24}


; 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: mustprogress uwtable
define dso_local void @_ZN9upscaledb9TxnCursor5cloneEPKS0_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %3, i8 0, i64 24, i1 false)
  %4 = tail call noundef zeroext i1 @_ZNK9upscaledb9TxnCursor6is_nilEv(ptr noundef nonnull align 8 dereferenceable(32) %1)
  br i1 %4, label %7, label %5

5:                                                ; preds = %2
  %6 = tail call noundef ptr @_ZNK9upscaledb9TxnCursor14get_coupled_opEv(ptr noundef nonnull align 8 dereferenceable(32) %1)
  tail call void @_ZN9upscaledb9TxnCursor9couple_toEPNS_12TxnOperationE(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %6)
  br label %7

7:                                                ; preds = %5, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK9upscaledb9TxnCursor6is_nilEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN9upscaledb9TxnCursor9couple_toEPNS_12TxnOperationE(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9upscaledb9TxnCursor14get_coupled_opEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { 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 #1 = { mustprogress 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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: EarlyCSEPass,GlobalOptPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass