pytorch

ba8c1fc6 - Add Half conversion of bit cast for SYCL kernel (#64340)

Add Half conversion of bit cast for SYCL kernel (#64340) Summary: ## Motivation Enhance the performance of Half/float conversion in SYCL kernels. ## Solution Add the native SYCL half type to help convert the half from/to float in the kernel code. ## Additional Context `__SYCL_DEVICE_ONLY__` is a MACRO only valid when compiling the kernel code for SYCL backend. Pull Request resolved: https://github.com/pytorch/pytorch/pull/64340 Reviewed By: gchanan Differential Revision: D30720823 Pulled By: ezyang fbshipit-source-id: e7e770d02df5b2d45da61d2fed3ba59383b3dc3a