Snappy Team b5477a8457 Optimize IncrementalCopy: There are between 1 and 4 copy iterations. Allow FDO to work with full knowledge of the probabilities for each branch. ...

On skylake, this improves protobuf and html decompression speed by 15% and 9% respectively, and the rest by ~2%.
On haswell, this improves protobuf and html decompression speed by 23% and 16% respectively, and the rest by ~3%.

PiperOrigin-RevId: 289090401

2020-01-14 10:58:42 -08:00

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