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Remove local optimizations of empty Bitmapsets into null pointers.

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These are all dead code now that it's done centrally.

Patch by me; thanks to Nathan Bossart and Richard Guo for review.

Discussion: https://postgr.es/m/1159933.1677621588@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2023-03-02 12:01:47 -05:00
parent 00b41463c2
commit 6b661b01f4
9 changed files with 9 additions and 64 deletions
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src/backend/optimizer/util/placeholder.c
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@@ -125,8 +125,6 @@ find_placeholder_info(PlannerInfo *root, PlaceHolderVar *phv)
*/
rels_used = pull_varnos(root, (Node *) phv->phexpr);
phinfo->ph_lateral = bms_difference(rels_used, phv->phrels);
if (bms_is_empty(phinfo->ph_lateral))
phinfo->ph_lateral = NULL; /* make it exactly NULL if empty */
phinfo->ph_eval_at = bms_int_members(rels_used, phv->phrels);
/* If no contained vars, force evaluation at syntactic location */
if (bms_is_empty(phinfo->ph_eval_at))