[committed, pa] Update atomic support in PA backend
John David Anglin
Fri Sep 25 07:59:00 GMT 2015
The attached change updates the atomic support in the PA backend for hppa-linux.
1) It enables 64-bit sync builtin support,
2) It adds new atomic store patterns that are atomic with respect to the LWS
compare and swap builtins in linux-atomic.c, and
3) Revises existing atomic load and store patterns to also use the LWS builtins.
Tested on hppa-unknown-linux-gnu with no observed regressions. Committed
to trunk and gcc-5.
John David Anglin email@example.com
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