pytorch

687a7e4a - Revert D19975411: Remove special case codegen for tril_indices/triu_indices.

Revert D19975411: Remove special case codegen for tril_indices/triu_indices. Test Plan: revert-hammer Differential Revision: D19975411 Original commit changeset: 996598759bed fbshipit-source-id: 6bdb4b8f903e13815fc146e6f3260e5bb04c1045