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(parent: 1b2ba88) | patch
For PowerPC instruction "addi", use constraint "b".
authorNoah Misch <noah@leadboat.com>
Sat, 19 Oct 2019 03:20:28 +0000 (20:20 -0700)
committerNoah Misch <noah@leadboat.com>
Sat, 19 Oct 2019 03:20:32 +0000 (20:20 -0700)
commit62e881946c4d15f779808991f97ea379263a591d
treec6179d2a38cc96ad1d5cee52f8f60cb1d246a01ctree | snapshot
parent1b2ba8874ad39491c7b66ef65087c3c532864842commit | diff
For PowerPC instruction "addi", use constraint "b".

Without "b", a variant of the tas() code miscompiles on macOS 10.4.
This may also fix a compilation failure involving macOS 10.1.  Today's
compilers have been allocating acceptable registers with or without this
change, but this future-proofs the code by precisely conveying the
acceptable registers.  Back-patch to 9.4 (all supported versions).

Reviewed by Tom Lane.

Discussion: https://postgr.es/m/20191009063900.GA4066266@rfd.leadboat.com
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