Use irange in PyTorch (#72836)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72836
Replacing increment iterator loops with ranged loops. It allows loops such as for(int i=0;i<10;i++) to be expressed as for(const auto i : c10::irange(10)). This auto-types the loops and adds const-safety to the iteration variable.
Reviewed By: albanD
Differential Revision: D34136539
fbshipit-source-id: 760a70ad43ce6f05630ba8fea261d4dbb699e62e
(cherry picked from commit 0428408d883ef81f3a548ab2b26dd58ce634bcb1)
