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Remove no-op GiST support functions in the core GiST opclasses.

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The preceding patch allowed us to remove useless GiST support functions.
This patch actually does that for all the no-op cases in the core GiST
code.  This buys us whatever performance gain is to be had, and more
importantly exercises the preceding patch.

There remain no-op functions in the contrib GiST opclasses, but those
will take more work to remove.

Discussion: https://postgr.es/m/CAJEAwVELVx9gYscpE=Be6iJxvdW5unZ_LkcAaVNSeOwvdwtD=A@mail.gmail.com
This commit is contained in:
Tom Lane
2017-09-19 23:32:45 -04:00
parent d3a4f89d8a
commit 2d484f9b05
10 changed files with 22 additions and 105 deletions
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32
src/backend/access/gist/gistproc.c
View File

@ -185,37 +185,9 @@ gist_box_union(PG_FUNCTION_ARGS)
}
/*
* GiST Compress methods for boxes
*
* do not do anything.
* We store boxes as boxes in GiST indexes, so we do not need
* compress, decompress, or fetch functions.
*/
Datum
gist_box_compress(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(PG_GETARG_POINTER(0));
}
/*
* GiST DeCompress method for boxes (also used for points, polygons
* and circles)
*
* do not do anything --- we just use the stored box as is.
*/
Datum
gist_box_decompress(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(PG_GETARG_POINTER(0));
}
/*
* GiST Fetch method for boxes
* do not do anything --- we just return the stored box as is.
*/
Datum
gist_box_fetch(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(PG_GETARG_POINTER(0));
}
/*
* The GiST Penalty method for boxes (also used for points)