word-at-a-time.h: support zero_bytemask() on alpha and tile
Both alpha and tile needed implementations of zero_bytemask.
The alpha version is untested.
Signed-off-by: NChris Metcalf <cmetcalf@ezchip.com>
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Both alpha and tile needed implementations of zero_bytemask.
The alpha version is untested.
Signed-off-by: NChris Metcalf <cmetcalf@ezchip.com>