Replace xlc __fetch_and_add() with inline asm.

Noah Misch <noah@leadboat.com>

Commit: 8972ac69666550535a885aebe0930550c151b4a3
Author: Noah Misch <noah@leadboat.com>
Date: 2019-09-14T02:34:19Z
Releases: 10.11
Replace xlc __fetch_and_add() with inline asm.

PostgreSQL has been unusable when built with xlc 13 and newer, which are
incompatible with our use of __fetch_and_add().  Back-patch to 9.5,
which introduced pg_atomic_fetch_add_u32().

Reviewed by Tom Lane.

Discussion: https://postgr.es/m/20190831071157.GA3251746@rfd.leadboat.com

Files

PathChange+/−
src/include/port/atomics/generic-xlc.h modified +35 −4

Discussion