Add a back-link from IndexOptInfo structs to their parent RelOptInfo

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 926e8a00d38e1873369ab9a24062440c82d7731c
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2005-03-27T06:29:49Z
Releases: 8.1.0
Add a back-link from IndexOptInfo structs to their parent RelOptInfo
structs.  There are many places in the planner where we were passing
both a rel and an index to subroutines, and now need only pass the
index struct.  Notationally simpler, and perhaps a tad faster.

Files