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(parent: c455ee8) | 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)
commit083929372e046662957d20b68aacf5e092bb70cb
tree4ca8ccaf4496ea19689c8b0c44f8f7026b8679c5tree | snapshot
parentc455ee88ccae71ce6a13f7a34aead66aac0ed7c3commit | 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
src/include/storage/s_lock.h diff | blob | blame | history
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