pytorch

eaac2819 - [te] Use Dtype::is_signed instead of an ad hoc local predicate. (#49147)

[te] Use Dtype::is_signed instead of an ad hoc local predicate. (#49147) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/49147 D25456366 adds Dtype::is_signed (which is backed by c10::isSignedType), so use that instead of this one-off. ghstack-source-id: 118415315 Test Plan: ``` buck test //caffe2/test{:jit,:tensorexpr,/cpp/tensorexpr:tensorexpr} ``` Reviewed By: robieta Differential Revision: D25456683 fbshipit-source-id: 428f1e8bff21ea05730690226a44984995c4c138