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2020-02-18Merge release-20200211.0-33-g906eb62 (automated)gVisor bot
2020-02-18atomicbitops package cleanupsgVisor bot
- Redocument memory ordering from "no ordering" to "acquire-release". (No functional change: both LOCK WHATEVER on x86, and LDAXR/STLXR loops on ARM64, already have this property.) - Remove IncUnlessZeroInt32 and DecUnlessOneInt32, which were only faster than the equivalent loops using sync/atomic before the Go compiler inlined non-unsafe.Pointer atomics many releases ago. PiperOrigin-RevId: 295811743