count_nonzero with requires grad

[narain1]

Fixes #50792

fixes count_nonzero for tensors with requires_grad and also includes test

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[codecov]

Codecov Report

Merging #50866 (e6441c4) into master (c945a5b) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #50866      +/-   ##
==========================================
- Coverage   81.02%   81.01%   -0.01%     
==========================================
  Files        1916     1916              
  Lines      209287   209287              
==========================================
- Hits       169568   169558      -10     
- Misses      39719    39729      +10     

[albanD]

Thanks for the quick PR!

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@albanD has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[narain1]

will these changes also reflect on the XLA branch?

[albanD]

This is the same code used by xla yes.
Not sure what is the release cycle on the xla package though.

Also the changes you pushed are unrelated right? I will remove them from the PR before landing.

[narain1]

Yeah the last commit was a pr for a different issue I'm still figuring out to remove it😑

[albanD]

You can either:

• do a revert commit and push it in this branch. So that the final diff is correct. And the commit history is removed when landing anyway so we don't care for the extra commits
• locally remove the commit by checking out the previous commit, then make that the new branch and force push it here.

[albanD]

No worries.
I landed a version without the last commit ;)