pytorch

1d522598 - use fp16<->fp32 intrinsic (#17496)

use fp16<->fp32 intrinsic (#17496) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/17496 As title. Reviewed By: hyuen Differential Revision: D14222907 fbshipit-source-id: d5d6c032e725ca8b52aca2be7401ec3c59f6a242