On Mon, Dec 25, 2023 at 3:01 PM Richard Guo <guofengli...@gmail.com> wrote:

> On Thu, Jul 13, 2023 at 3:12 PM Richard Guo <guofengli...@gmail.com>
> wrote:
>
>> So I'm wondering if it'd be better that we move all this logic of
>> computing additional lateral references within PHVs to get_memoize_path,
>> where we can examine only PHVs that are evaluated at innerrel.  And
>> considering that these lateral refs are only used by Memoize, it seems
>> more sensible to compute them there.  But I'm a little worried that
>> doing this would make get_memoize_path too expensive.
>>
>> Please see v4 patch for this change.
>>
>
> I'd like to add that not checking PHVs for lateral references can lead
> to performance regressions with Memoize node.
>

The v4 patch does not apply any more.  I've rebased it on master.
Nothing else has changed.

Thanks
Richard

Attachment: v5-0001-Check-lateral-refs-within-PHVs-for-memoize-cache-keys.patch
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