pytorch

6026caed - Make HAS_CPU boolean lazy, speed up import time (#99537)

Make HAS_CPU boolean lazy, speed up import time (#99537) Signed-off-by: Edward Z. Yang <ezyang@meta.com> Pull Request resolved: https://github.com/pytorch/pytorch/pull/99537 Approved by: https://github.com/bertmaher, https://github.com/albanD